Prevalence and association of headaches, temporomandibular joint disorders, and occlusal interferences
Headache is a widespread ail- tion and modulation via interneuro- cluded data such as gender, age, edu-
Prevalence and association of
ment. Both temporomandibular joint nal input may eventually trigger an cation, and socioeconomic status as
headaches, temporomandibular joint
disorders (TMD) and headache have overlap of spinal innervation from the influence of demographic factors major impacts on the quality of life.1 muscular proprioceptive areas to pain on the etiology of TMD and headache
disorders, and occlusal interferences
Studies report a lifetime prevalence of areas.38,40-43
is scientifically controversial.2,48-51
every headache type for 69% of men
As stated, clinical practice experi- Consumption of substances such as
and 88% of women.2-9 Lupoli and ence suggests that headache and den- alcohol, caffeine, and nicotine, and
M. Troeltzsch, DMD, MD,a M. Troeltzsch, DMD,b R.J. Cronin,
Lockey10 report that 10 million Ameri- tal pathology are intertwined. Never- the presence of psychological factors
DDS, MS,c A.H. Brodine, DMD,d R. Frankenberger, DMD, PhD,e
cans cope with frequent headaches. theless, only a few studies44-46 indicate including fear of the future, depres-Although the etiological factors of such a correlation. The purpose of sion, psychiatric therapy, or use of an-
and K. Messlinger, MD, PhDf
headaches are not fully understood, this study was to identify the presence tipsychotic drugs were also analyzed
Friedrich Alexander University Erlangen-Nuremberg, Erlangen,
vascular/neurologic factors, age, gen- or absence of an association of occlu- as the literature indicates that there
Germany; University of Texas Health Science Center at San
der, and muscular hypertension of sal interferences, parafunction, TMD, may be an influence.52the masticatory and cervical muscles or physiologic, muscular, or prosth-
Each patient's medical history was
Antonio, San Antonio, Texas; University of Rochester, Eastman
are reported.2,11 Furthermore, dis- odontic factors with the occurrence queried for cardiovascular disease,
Institute for Oral Health, Rochester, NY; Phillips-University
orders in the temporomandibular of headache.
hypertension, diabetes, orthopedic
joint region have been suspected and
problems, and lung, kidney, and liver
Marburg, Germany, Ansbach, Germany.
shown to influence the etiology, fre-
MATERIAL AND METHODS
disease because these were consid-
quency, intensity, and chronicity of
ered relevant after thorough literature
Statement of problem. Although an interaction of malocclusion, parafunction, and temporomandibular joint disor-
headache.10,12-22 In fact, the correla-
This cross-sectional study was review.2 The prevalence of habits such
ders (TMD) can be inferred from the experience of daily practice, scientific evidence to corroborate this hypothesis
tion for headache patients who suffer conducted to examine possible as- as chewing gum and nail biting were
does not exist. However, there are indications that TMD and headaches may be intertwined.
from TMD is strong.12 However, there sociations between TMD and occlu- also considered. As physical exercise is controversy in the scientific litera- sal interferences with the etiology of plays a major role in medical preven-
Purpose. The purpose of this study was to identify the presence or absence of an association of occlusal interferences,
ture regarding the etiology of TMD. headache. Over an 11 month period tion therapy, the patients' activities
parafunction, TMD, or physiologic, muscular, or prosthodontic factors with the occurrence of headache.
To date, controlled studies have failed (October 2008 until August 2009), were screened concerning the type,
Material and methods. In a private practice population of 1031 subjects (436 men and 595 women, mean age 49.6
to prove an association between mal- 1031 patients were questioned and frequency, and duration of workouts,
years) the demographic parameters, headache and general pain history, habits and general personal information were
occlusion, parafunction, dental wear, examined. The study population con- even though there is limited evidence
recorded. Clinical examination for dental, muscular, and temporomandibular joint pathology was accomplished. Data
TMD, and headache.8, 23-30 Interest- sisted of the patient base of an oral that physical exercise has a protec-
were statistically analyzed using the Mann-Whitney U, Kruskal-Wallis, and Chi-Square tests (α=.05). A multinomial
ingly, treatment of headache patients and maxillofacial surgery practice in tive effect on the etiology of a head-
logistic regression analysis was performed with respect to confounding variables.
who display coincident malocclusion Ansbach, Germany. All patients, with- ache.2,49,50,53,54 with occlusal splints seems to allevi- out exception, who presented and
The patients answered the ques-
Results. Headache affliction was found to affect women more frequently than men (1.7:1). Students and non aca-
ate their burden.31-33
consented to participate during the tionnaire in the absence of the exam-
demics were more prone to suffer from headache. Parafunction (
P=.001), TMD (
P=.001) and gross differences
The International Headache So- 11 month period, were included in iner. Subsequent to the questionnaire,
between centric occlusion and maximum intercuspation of more than a 3 mm visible track marked with 8 µm articu-
ciety (IHS) has published criteria the study. However, after evaluation the patients underwent thorough
lation foil (
P=.001) significantly influenced the presence of headache. Headache intensity and frequency decreased
for diagnosing the subgroups of of the headache diagnoses, patients dental, orofacial, and cervical exami-
with age. While tension-type headache was most frequently diagnosed, the parameters studied were not significantly
headache.34-35 Primary and second- suffering from secondary headache nation. The examinations were per-
associated with one certain headache diagnosis more frequently than others.
ary headache forms are defined, had to be excluded as the sparseness formed by 3 general dentists and one
Conclusions. Stomatognathic factors of TMD, parafunction, and gross differences between centric occlusion and
and patients can be diagnosed with of secondary headache subjects ruled oral and maxillofacial surgeon, all of
maximum intercuspation of more than 3 mm are associated with headache. These findings should be interpreted with
more than one headache type. Both out reasonable statistical evaluation. whom examined the same parameters
caution due to the cross-sectional nature of this study. (J Prosthet Dent 2011;105:410-417)
migraine headache and tension-type The authors received informed con- according to a predetermined stan-headache (TTH) have been associ- sent from all patients who took part dard to which all examiners were cali-ated with TMD.1 Surprisingly, pa- in the study. Parental consent was brated prior to the study. Calibration
Clinical Implications
tients that were diagnosed with TTH obtained for all patients under 18 of the examiners was assured by mod-
This study suggests that headaches are associated with TMD and
displayed the least prevalence of si- years of age. All patients completed el examinations, which were demon-multaneous TMD, but patients with a standardized, 2-part questionnaire. strated and controlled by the most
occlusal discrepancies, but it does not suggest that their treatment
concurrent diagnoses of migraine The first part was completed by the experienced examiner, the oral and
may reduce the occurrence of pain.
headache and TTH showed the high- patient; the second part concerning maxillofacial surgeon. The examiners est correlation with TMD.1 The reason occlusion, the state of muscles, and who were assigned patients without for that is still unclear. The literature questions about TMD was completed systematic randomization, examined
aPrivate Practice, Ansbach, Germany; Department of Physiology and Pathophysiology, University Erlangen-Nuremberg.
states that the trigeminal nuclei areas by the examiners. The questions were and recorded various oral and tem-
bPrivate Practice, Ansbach, Germany; Department of Physiology and Pathophysiology, University Erlangen-Nuremberg.
for proprioceptive, mechanorecep- designed in accordance with the Ger- poromandibular joint (TMJ) dysfunc-
cProfessor, Director, Graduate Prosthodontics Division, University of Texas Health Science Center at San Antonio.
tive, and pain sensations in the spinal man version of the Research Diagnos- tion parameters.2 The TMJ was exam-
dPrivate Practice, Rochester; Assistant Professor, Prosthodontic Residency University of Rochester, Eastman Institute for Oral
cord are in close proximity.36-43 Com- tic Criteria for Temporomandibular ined for clicking and crepitus, pain
Health.
eDepartment Director, Department of Restorative Dentistry, Phillips-University Marburg.
plex mechanisms such as homo- and Disorders (RDC/TMD) 47 and the IHS (both spontaneous and on TMJ load-
f Professor, Department of Physiology and Pathophysiology, University Erlangen-Nuremberg.
heterosynaptic plasticity, sensitiza- criteria.34,35 Furthermore, the form in- ing), mandibular range of motion, and
The Journal of Prosthetic Dentistry
Headache is a widespread ail- tion and modulation via interneuro- cluded data such as gender, age, edu-
Prevalence and association of
ment. Both temporomandibular joint nal input may eventually trigger an cation, and socioeconomic status as
headaches, temporomandibular joint
disorders (TMD) and headache have overlap of spinal innervation from the influence of demographic factors major impacts on the quality of life.1 muscular proprioceptive areas to pain on the etiology of TMD and headache
disorders, and occlusal interferences
Studies report a lifetime prevalence of areas.38,40-43
is scientifically controversial.2,48-51
every headache type for 69% of men
As stated, clinical practice experi- Consumption of substances such as
and 88% of women.2-9 Lupoli and ence suggests that headache and den- alcohol, caffeine, and nicotine, and
M. Troeltzsch, DMD, MD,a M. Troeltzsch, DMD,b R.J. Cronin,
Lockey10 report that 10 million Ameri- tal pathology are intertwined. Never- the presence of psychological factors
DDS, MS,c A.H. Brodine, DMD,d R. Frankenberger, DMD, PhD,e
cans cope with frequent headaches. theless, only a few studies44-46 indicate including fear of the future, depres-Although the etiological factors of such a correlation. The purpose of sion, psychiatric therapy, or use of an-
and K. Messlinger, MD, PhDf
headaches are not fully understood, this study was to identify the presence tipsychotic drugs were also analyzed
Friedrich Alexander University Erlangen-Nuremberg, Erlangen,
vascular/neurologic factors, age, gen- or absence of an association of occlu- as the literature indicates that there
Germany; University of Texas Health Science Center at San
der, and muscular hypertension of sal interferences, parafunction, TMD, may be an influence.52the masticatory and cervical muscles or physiologic, muscular, or prosth-
Each patient's medical history was
Antonio, San Antonio, Texas; University of Rochester, Eastman
are reported.2,11 Furthermore, dis- odontic factors with the occurrence queried for cardiovascular disease,
Institute for Oral Health, Rochester, NY; Phillips-University
orders in the temporomandibular of headache.
hypertension, diabetes, orthopedic
joint region have been suspected and
problems, and lung, kidney, and liver
Marburg, Germany, Ansbach, Germany.
shown to influence the etiology, fre-
MATERIAL AND METHODS
disease because these were consid-
quency, intensity, and chronicity of
ered relevant after thorough literature
Statement of problem. Although an interaction of malocclusion, parafunction, and temporomandibular joint disor-
headache.10,12-22 In fact, the correla-
This cross-sectional study was review.2 The prevalence of habits such
ders (TMD) can be inferred from the experience of daily practice, scientific evidence to corroborate this hypothesis
tion for headache patients who suffer conducted to examine possible as- as chewing gum and nail biting were
does not exist. However, there are indications that TMD and headaches may be intertwined.
from TMD is strong.12 However, there sociations between TMD and occlu- also considered. As physical exercise is controversy in the scientific litera- sal interferences with the etiology of plays a major role in medical preven-
Purpose. The purpose of this study was to identify the presence or absence of an association of occlusal interferences,
ture regarding the etiology of TMD. headache. Over an 11 month period tion therapy, the patients' activities
parafunction, TMD, or physiologic, muscular, or prosthodontic factors with the occurrence of headache.
To date, controlled studies have failed (October 2008 until August 2009), were screened concerning the type,
Material and methods. In a private practice population of 1031 subjects (436 men and 595 women, mean age 49.6
to prove an association between mal- 1031 patients were questioned and frequency, and duration of workouts,
years) the demographic parameters, headache and general pain history, habits and general personal information were
occlusion, parafunction, dental wear, examined. The study population con- even though there is limited evidence
recorded. Clinical examination for dental, muscular, and temporomandibular joint pathology was accomplished. Data
TMD, and headache.8, 23-30 Interest- sisted of the patient base of an oral that physical exercise has a protec-
were statistically analyzed using the Mann-Whitney U, Kruskal-Wallis, and Chi-Square tests (α=.05). A multinomial
ingly, treatment of headache patients and maxillofacial surgery practice in tive effect on the etiology of a head-
logistic regression analysis was performed with respect to confounding variables.
who display coincident malocclusion Ansbach, Germany. All patients, with- ache.2,49,50,53,54 with occlusal splints seems to allevi- out exception, who presented and
The patients answered the ques-
Results. Headache affliction was found to affect women more frequently than men (1.7:1). Students and non aca-
ate their burden.31-33
consented to participate during the tionnaire in the absence of the exam-
demics were more prone to suffer from headache. Parafunction (
P=.001), TMD (
P=.001) and gross differences
The International Headache So- 11 month period, were included in iner. Subsequent to the questionnaire,
between centric occlusion and maximum intercuspation of more than a 3 mm visible track marked with 8 µm articu-
ciety (IHS) has published criteria the study. However, after evaluation the patients underwent thorough
lation foil (
P=.001) significantly influenced the presence of headache. Headache intensity and frequency decreased
for diagnosing the subgroups of of the headache diagnoses, patients dental, orofacial, and cervical exami-
with age. While tension-type headache was most frequently diagnosed, the parameters studied were not significantly
headache.34-35 Primary and second- suffering from secondary headache nation. The examinations were per-
associated with one certain headache diagnosis more frequently than others.
ary headache forms are defined, had to be excluded as the sparseness formed by 3 general dentists and one
Conclusions. Stomatognathic factors of TMD, parafunction, and gross differences between centric occlusion and
and patients can be diagnosed with of secondary headache subjects ruled oral and maxillofacial surgeon, all of
maximum intercuspation of more than 3 mm are associated with headache. These findings should be interpreted with
more than one headache type. Both out reasonable statistical evaluation. whom examined the same parameters
caution due to the cross-sectional nature of this study. (J Prosthet Dent 2011;105:410-417)
migraine headache and tension-type The authors received informed con- according to a predetermined stan-headache (TTH) have been associ- sent from all patients who took part dard to which all examiners were cali-ated with TMD.1 Surprisingly, pa- in the study. Parental consent was brated prior to the study. Calibration
Clinical Implications
tients that were diagnosed with TTH obtained for all patients under 18 of the examiners was assured by mod-
This study suggests that headaches are associated with TMD and
displayed the least prevalence of si- years of age. All patients completed el examinations, which were demon-multaneous TMD, but patients with a standardized, 2-part questionnaire. strated and controlled by the most
occlusal discrepancies, but it does not suggest that their treatment
concurrent diagnoses of migraine The first part was completed by the experienced examiner, the oral and
may reduce the occurrence of pain.
headache and TTH showed the high- patient; the second part concerning maxillofacial surgeon. The examiners est correlation with TMD.1 The reason occlusion, the state of muscles, and who were assigned patients without for that is still unclear. The literature questions about TMD was completed systematic randomization, examined
aPrivate Practice, Ansbach, Germany; Department of Physiology and Pathophysiology, University Erlangen-Nuremberg.
states that the trigeminal nuclei areas by the examiners. The questions were and recorded various oral and tem-
bPrivate Practice, Ansbach, Germany; Department of Physiology and Pathophysiology, University Erlangen-Nuremberg.
for proprioceptive, mechanorecep- designed in accordance with the Ger- poromandibular joint (TMJ) dysfunc-
cProfessor, Director, Graduate Prosthodontics Division, University of Texas Health Science Center at San Antonio.
tive, and pain sensations in the spinal man version of the Research Diagnos- tion parameters.2 The TMJ was exam-
dPrivate Practice, Rochester; Assistant Professor, Prosthodontic Residency University of Rochester, Eastman Institute for Oral
cord are in close proximity.36-43 Com- tic Criteria for Temporomandibular ined for clicking and crepitus, pain
Health.
eDepartment Director, Department of Restorative Dentistry, Phillips-University Marburg.
plex mechanisms such as homo- and Disorders (RDC/TMD) 47 and the IHS (both spontaneous and on TMJ load-
f Professor, Department of Physiology and Pathophysiology, University Erlangen-Nuremberg.
heterosynaptic plasticity, sensitiza- criteria.34,35 Furthermore, the form in- ing), mandibular range of motion, and
The Journal of Prosthetic Dentistry
Volume 105 Issue 6
mandibular deviation upon mouth single variables were combined in
treatment. However, 240 patients re-
opening and during mandibular pro- groups to facilitate statistical analysis.
Table II. Gender distribution of headache, TMD and
ported that they experienced psycho-
trusion. The masseteric, temporal, del-
The statistical analysis was per-
In total, 1031 patients were ex-
psychiatric diagnoses (Chi-Squared analysis)
logical impairment.
toid, trapezius, mylohoid, geniohyoid, formed using statistical software amined: 436 (42.3%) men and 595
While 334 patients felt physically
digastric, occipital, and medial and (SPSS for Windows, 2009, Release (57.7%) women. The mean age was
tense, only 33 had ever been in treat-
lateral pterygoid muscles were exam- 17.0; SPSS Inc, Chicago, Ill). Interval 49.6 (±13.2) years and 257 patients
ment for muscle relaxation. The ex-
ined for myogenic pain (both sponta- scale data were examined using the were younger than 30 years, 474 be-
amination of the facial and cervical
neous and on the application of pres- Kruskal-Wallis H test. Where neces- tween 30 and 60 years and 288 older
muscle groups (deltoid, trapezius,
sure) and trigger points.
sary, analysis by pairs was accom- than 60 years. Table I summarizes the
mylohoid, geniohyoid, digastric, oc-
A history of bruxism, dental at- plished with the Mann-Whitney U primary aspects of examined demo-
cipital, medial and lateral pterygoid
trition, tooth impressions in the mu- test. The Chi-square test was used for
graphic factors. Smoking was admit-
muscles) revealed pathology (myo-
cosa of the tongue and cheek, as well nominal scaled data; the Phi and Cra- ted by 209 patients, 379 admitted
geloses, pain, sensitive trigger points,
as recession and non carious cervical mer's V correlation coefficients were consuming alcohol frequently (more
or combinations) in 436 patients. Af-
lesions (NCCL) were recorded. Wear computed to identify possible general than once a week), and 524 drank
ter examination, 695 patients were di-
Movement restraint
was evaluated intraorally according to correlations; multinomial logistic re- coffee regularly. Stimulant consump-
agnosed with some type of headache.
Mandible deviation
criteria defined by Pullinger and Selig- gression analysis was performed to tion was equally distributed between
Tension-type headache (TTH) was
man.55 The presence of bruxism was assess the individual association of genders. In response to physical activ-
most frequently diagnosed (48%),
determined by report of the patient each variable on headache, and values ity questions, 675 subjects reported
followed by migraine (1%). Only 85
and by clinical signs such as consis- of α=.05 were considered statistically that they exercised regularly. Of these,
Severe depression
patients showed signs of both TTH
tent occlusal wear patterns on both significant. The odds ratios (OR) were 262 exercised less than 2 hours per
and migraine. Some type of TMD was
natural teeth and restorations. The calculated, and the literature suggests week, 265 between 2 and 4 hours
found in 409 patients. Table II dis-
prosthodontic and restorative state that an OR ≥ 2 is considered clinically and 148 more than 4 hours. Psycho-
plays the distribution of headache,
of the patient was considered. The significant.57
logically, 86 patients suffered from se-
P<.05 indicates significant difference
TMD diagnoses, and psychological
existence and the condition of fixed
vere depression or were in psychiatric
impairment by gender.
and removable prostheses were not-
Table III. Detailed description of dental/parafunctional/prosthodontic findings
TMD were found significantly
ed. Detection of premature contacts, Table I. Distribution of patients according to selected demographic factors
more often in patients where mus-
found by bimanual manipulation, in-
cular pathology or parafunction,
dicated that maximum intercuspation
specifically bruxism and incisal wear,
(MI) was inconsistent with centric oc-
were detected. Regression analysis
clusion (CO).56 The examiners record-
disclosed significant associations.
ed any tracks between the premature
Strong odds ratios were computed for
Tooth impressions in tongue/cheek mucosa
centric occlusion contact and the MI.
$31,750 – $63,500
the variables: greater than 30 years of
Incisal wear only
If a track longer than 3 mm between
$63,500 – $127,000
age (OR 4.29), a current student (OR
Premolar/molar wear only
the premature contacts in CO and MI
7.09), detection of any stated mus-
Incisal and premolar/molar wear
position could clearly be identified, it
Refused to answer
cular pathologies (OR 4.87), bruxism
Bruxers and incisal wear
was considered clinically significant.
(OR 7.9), and horizontal deviations
Bruxers and incisal and premolar/molar wear
Prestudy calibration of the authors
between CO and MI (OR 25.9).
revealed that tracks less than 3 mm
University/col ege degree
While the prevalence of headache
could not be reproducibly identified
Nonacademic career
Patients with crowns only
decreased with age, TMD occurrence
by all examiners. The tracks were re-
Student (high school/college/university)
Patients with fixed dental prostheses (3-unit and more) only
was highest in the age group between
corded by using a double layer of ar-
Patients with removable prostheses
30 and 60 years as shown in Table III.
ticulation foil (Arti-Fol 8 µm; Bausch,
Retired and university/col ege degree
Patients with fixed and removable prostheses
Although not statistically significant,
Cologne, Germany). Finally, the oc-
Retired and nonacademic career
Patients with a combination of restorations/prostheses
TMD problems were more commonly
clusal vertical dimension and centric
diagnosed on the left side. Signs of
relation deviations were recorded.
General Satisfaction in Life
parafunction and wear were displayed
No parafunctional habits
For the measurement of the verti-
in 613 patients, while 408 patients
cal dimension, a Boley caliper gauge
Yes, with reservations
had single or multiple unit fixed pros-
(Miltex Inc, York, Pa) was used. If the
theses. Parafunctional habits were re-
Gum chewing and nail biting
difference between maximum inter-
ported for 339 patients. Incorrect oc-
cuspation and the mandibular resting
Fear of Future
clusal vertical dimension was found in
position was greater than 4 mm, it
Further Intricacies of the Stomatognathic System
44 patients.
was described as incorrect.
Difference between MI and mandibular resting
The majority of headache patients
Headache diagnoses, if applica-
position ≥ 4 mm
did not show any statistically signifi-
ble, were recorded according to IHS
Difference between MI and CO ≥ 3 mm
cant signs of psychological impair-
criteria34,35 and where appropriate,
ment. Significantly more patients
The Journal of Prosthetic Dentistry
Volume 105 Issue 6
mandibular deviation upon mouth single variables were combined in
treatment. However, 240 patients re-
opening and during mandibular pro- groups to facilitate statistical analysis.
Table II. Gender distribution of headache, TMD and
ported that they experienced psycho-
trusion. The masseteric, temporal, del-
The statistical analysis was per-
In total, 1031 patients were ex-
psychiatric diagnoses (Chi-Squared analysis)
logical impairment.
toid, trapezius, mylohoid, geniohyoid, formed using statistical software amined: 436 (42.3%) men and 595
While 334 patients felt physically
digastric, occipital, and medial and (SPSS for Windows, 2009, Release (57.7%) women. The mean age was
tense, only 33 had ever been in treat-
lateral pterygoid muscles were exam- 17.0; SPSS Inc, Chicago, Ill). Interval 49.6 (±13.2) years and 257 patients
ment for muscle relaxation. The ex-
ined for myogenic pain (both sponta- scale data were examined using the were younger than 30 years, 474 be-
amination of the facial and cervical
neous and on the application of pres- Kruskal-Wallis H test. Where neces- tween 30 and 60 years and 288 older
muscle groups (deltoid, trapezius,
sure) and trigger points.
sary, analysis by pairs was accom- than 60 years. Table I summarizes the
mylohoid, geniohyoid, digastric, oc-
A history of bruxism, dental at- plished with the Mann-Whitney U primary aspects of examined demo-
cipital, medial and lateral pterygoid
trition, tooth impressions in the mu- test. The Chi-square test was used for
graphic factors. Smoking was admit-
muscles) revealed pathology (myo-
cosa of the tongue and cheek, as well nominal scaled data; the Phi and Cra- ted by 209 patients, 379 admitted
geloses, pain, sensitive trigger points,
as recession and non carious cervical mer's V correlation coefficients were consuming alcohol frequently (more
or combinations) in 436 patients. Af-
lesions (NCCL) were recorded. Wear computed to identify possible general than once a week), and 524 drank
ter examination, 695 patients were di-
Movement restraint
was evaluated intraorally according to correlations; multinomial logistic re- coffee regularly. Stimulant consump-
agnosed with some type of headache.
Mandible deviation
criteria defined by Pullinger and Selig- gression analysis was performed to tion was equally distributed between
Tension-type headache (TTH) was
man.55 The presence of bruxism was assess the individual association of genders. In response to physical activ-
most frequently diagnosed (48%),
determined by report of the patient each variable on headache, and values ity questions, 675 subjects reported
followed by migraine (1%). Only 85
and by clinical signs such as consis- of α=.05 were considered statistically that they exercised regularly. Of these,
Severe depression
patients showed signs of both TTH
tent occlusal wear patterns on both significant. The odds ratios (OR) were 262 exercised less than 2 hours per
and migraine. Some type of TMD was
natural teeth and restorations. The calculated, and the literature suggests week, 265 between 2 and 4 hours
found in 409 patients. Table II dis-
prosthodontic and restorative state that an OR ≥ 2 is considered clinically and 148 more than 4 hours. Psycho-
plays the distribution of headache,
of the patient was considered. The significant.57
logically, 86 patients suffered from se-
P<.05 indicates significant difference
TMD diagnoses, and psychological
existence and the condition of fixed
vere depression or were in psychiatric
impairment by gender.
and removable prostheses were not-
Table III. Detailed description of dental/parafunctional/prosthodontic findings
TMD were found significantly
ed. Detection of premature contacts, Table I. Distribution of patients according to selected demographic factors
more often in patients where mus-
found by bimanual manipulation, in-
cular pathology or parafunction,
dicated that maximum intercuspation
specifically bruxism and incisal wear,
(MI) was inconsistent with centric oc-
were detected. Regression analysis
clusion (CO).56 The examiners record-
disclosed significant associations.
ed any tracks between the premature
Strong odds ratios were computed for
Tooth impressions in tongue/cheek mucosa
centric occlusion contact and the MI.
$31,750 – $63,500
the variables: greater than 30 years of
Incisal wear only
If a track longer than 3 mm between
$63,500 – $127,000
age (OR 4.29), a current student (OR
Premolar/molar wear only
the premature contacts in CO and MI
7.09), detection of any stated mus-
Incisal and premolar/molar wear
position could clearly be identified, it
Refused to answer
cular pathologies (OR 4.87), bruxism
Bruxers and incisal wear
was considered clinically significant.
(OR 7.9), and horizontal deviations
Bruxers and incisal and premolar/molar wear
Prestudy calibration of the authors
between CO and MI (OR 25.9).
revealed that tracks less than 3 mm
University/col ege degree
While the prevalence of headache
could not be reproducibly identified
Nonacademic career
Patients with crowns only
decreased with age, TMD occurrence
by all examiners. The tracks were re-
Student (high school/college/university)
Patients with fixed dental prostheses (3-unit and more) only
was highest in the age group between
corded by using a double layer of ar-
Patients with removable prostheses
30 and 60 years as shown in Table III.
ticulation foil (Arti-Fol 8 µm; Bausch,
Retired and university/col ege degree
Patients with fixed and removable prostheses
Although not statistically significant,
Cologne, Germany). Finally, the oc-
Retired and nonacademic career
Patients with a combination of restorations/prostheses
TMD problems were more commonly
clusal vertical dimension and centric
diagnosed on the left side. Signs of
relation deviations were recorded.
General Satisfaction in Life
parafunction and wear were displayed
No parafunctional habits
For the measurement of the verti-
in 613 patients, while 408 patients
cal dimension, a Boley caliper gauge
Yes, with reservations
had single or multiple unit fixed pros-
(Miltex Inc, York, Pa) was used. If the
theses. Parafunctional habits were re-
Gum chewing and nail biting
difference between maximum inter-
ported for 339 patients. Incorrect oc-
cuspation and the mandibular resting
Fear of Future
clusal vertical dimension was found in
position was greater than 4 mm, it
Further Intricacies of the Stomatognathic System
44 patients.
was described as incorrect.
Difference between MI and mandibular resting
The majority of headache patients
Headache diagnoses, if applica-
position ≥ 4 mm
did not show any statistically signifi-
ble, were recorded according to IHS
Difference between MI and CO ≥ 3 mm
cant signs of psychological impair-
criteria34,35 and where appropriate,
ment. Significantly more patients
The Journal of Prosthetic Dentistry
Volume 105 Issue 6
gether.10,12,13,16,18,20-22 In the examined
Table IV. Total numbers presented by outcome variable of patients suffering from headache
Table V. Odds ratios and corresponding
P - Values of significant vari-
population, TMD were influenced by
ables for prevalence of headache (95% confidence interval in parenthe-
muscular pathology and parafunc-
ses), (referent category always event of suffering from primary head-
tion. Although there is agreement
ache) generated in multinominal logistic regression analysis
that muscular pathology impacts TMD,30 the contention that parafunc-
tion has an influence on TMD is dis-puted by the data that Seligman and
Age 14 – 30 years
Pullinger,25 De Meyer et al,8 and Schi-
Age 31 – 60 years
erz et al23 provided. The contention
Age 14 – 30 years
is supported by the studies of Celic
Age 31 – 60 years
et al,36 Nagamatsu-Sakaguchi et al,45
Nonacademic career
and Scrivani et al.46 More well-con-trolled studies are needed to clarify
Nonacademic career
Student (high school/
this issue. Consistent with previous
col ege/university)
studies,26-28 the current study found
Student (high school/college/university)
that neither malocclusion nor gross
Muscular pathology
differences between MI and CO were
TMJ pathology (except clicking)
(myogenic pain/trigger
significantly more prevalent in TMD
patients. Surprisingly, parafunction
Muscular pathology
was strongly associated with the prev-
(myogenous pain/trigger points/combinations)
alence of headache; and patients with a gross difference between MI and
Absence of TMJ pathology
Bruxism and incisal and
CO had the highest coincidence with
premolar/molar wear
primary headache. This is remarkable
since an association between TMD
Horizontal differences
and headache is presumed, despite
Bruxism and incisal and premolar/molar wear
between CO and MI
various study results that concluded
greater than 3 mm
there is either no or only a weak rela-
Horizontal differences between CO and
tionship between occlusal parameters
MI greater than 3mm
Moderate consumption
and TMD.5,12,24,29,30 Extensive litera-
of alcohol/coffee
ture review found only 2 studies that
Moderate consumption of alcohol/coffee
reported similar results.9,44 Neverthe-less, there is evidence in the literature
who felt physically tense (28.4%), or combination. The highest frequency
P<.05 indicates significant difference
that headache patients are self-re-
were diagnosed with muscular (36%) of occurrence of TTH and migraine
cally tense, and who simultaneously in TMD patients,5,13,20 cause continu- ported bruxers,14, 16 and both bruxing
or TMJ pathology (14%) also suffered headache was observed with severe
The purpose of the study was to
exhibited muscular pathology or TMD. ous strong mechanoreceptive input to and headache decrease with age.2,3,8,9
from recurrent headache. The com- parafunction and horizontal differ- explore associations between TMD,
The effect of muscle pathology many processing neurons in the spinal Treatment with occlusal splints has
puting of correlation coefficients and ences longer than 3 mm between aberrant stomatognathic function
on headache has been previously pub- cord.41 Among those are a wide dy- been reported to reduce headache in-
regression analysis showed significant MI and CO, with a highly significant and the occurrence of headache. Cor-
lished.5,13,20 Graff-Radford19 contends namic range of neurons that not only tensity and frequency.31-33
associations among age, gender, edu- (P≤.001) association. Healthy TMJs relations can be assumed due to the
that TMD elicit or exacerbate headache receive diverse input, but also project
Ciancaglini et al9 asserted that
cational aspects, stimulant consump- and moderate consumption of stim- findings of the study. Therefore, the
because of an overlap of innervations to different processing neurons, in- lengthy muscular stimulation by para-
tion, TMD, horizontal differences be- ulants seemed to have a protective hypothesis that there is an interrela-
with the trigeminal nerve. As previ- cluding pain neurons.42,43 Sustained function may lower the thresholds of
tween MI and CO greater than 3 mm, effect on the evolution of headache. tionship between headache, TMD,
ously stated, the trigeminal nuclei for neuronal stimulation triggers mecha- pain sensation. Congruent findings
and masticatory and cervical muscle Table IV and V depict descriptive sta- and occlusal interferences is ac-
mechanoreceptive,
proprioceptive, nisms of synaptic plasticity,38 and were published by Arima et al58 and
pathology with the appearance of tistics by relevant outcome variables cepted. Of the 1031 patients in this
and pain sensations are in close prox- eventually new synaptic pathways are Christensen et al.59 An independent
headache. Variables such as young and the odds ratios for the prevalence study, 67.4% claimed to suffer from
imity.36,37,40 Interneurons between the created.43 That may explain the occur- relation between occlusal factors
age, female gender, educational level, of headaches.
frequent headaches. As reported pre-
different nuclei areas, namely spinal rence and perpetuation of headache and headache is plausible. However,
severe parafunction, muscle or TMJ
The data did not indicate any viously,24,6,7,35 this study demonstrated
trigeminal nuclei oralis, interpolaris, in patients whose stomatognathic as previously stated, this study was
pathology, and greater than 3 mm dif- significant prevalence of headaches that tension-type headache was most
and caudalis, have been identified, system is disturbed in any way. The a cross-sectional study without sys-
ference between CO and MI correlated in patients who were suffering from frequently diagnosed, women were
and their importance in the pro- relation between TMD and the oc- tematic randomization. Therefore, se-
with a higher prevalence of every kind chronic pain in any region of the body significantly more affected by primary
cessing of orofacial proprioceptive currence of headache is still a matter lection bias cannot be ruled out and
of headache, and increased the risk of other than head, neck, face, and the headache, headache decreased with
and pain information has been de- of scientific contention, even though cause-effect conclusions must be con-
the occurrence of migraine and ten- stomatognathic system.
age, and there was a higher prevalence
scribed.41-43 Tense muscles, inflamed there is increasing evidence that TMD sidered with care. To explore the as-
sion-type headache, separately and in
of headache in patients who felt physi-
TMJ structures, or bruxism, detected and headache frequently appear to- sociations of occlusion headache and
The Journal of Prosthetic Dentistry
Volume 105 Issue 6
gether.10,12,13,16,18,20-22 In the examined
Table IV. Total numbers presented by outcome variable of patients suffering from headache
Table V. Odds ratios and corresponding
P - Values of significant vari-
population, TMD were influenced by
ables for prevalence of headache (95% confidence interval in parenthe-
muscular pathology and parafunc-
ses), (referent category always event of suffering from primary head-
tion. Although there is agreement
ache) generated in multinominal logistic regression analysis
that muscular pathology impacts TMD,30 the contention that parafunc-
tion has an influence on TMD is dis-puted by the data that Seligman and
Age 14 – 30 years
Pullinger,25 De Meyer et al,8 and Schi-
Age 31 – 60 years
erz et al23 provided. The contention
Age 14 – 30 years
is supported by the studies of Celic
Age 31 – 60 years
et al,36 Nagamatsu-Sakaguchi et al,45
Nonacademic career
and Scrivani et al.46 More well-con-trolled studies are needed to clarify
Nonacademic career
Student (high school/
this issue. Consistent with previous
col ege/university)
studies,26-28 the current study found
Student (high school/college/university)
that neither malocclusion nor gross
Muscular pathology
differences between MI and CO were
TMJ pathology (except clicking)
(myogenic pain/trigger
significantly more prevalent in TMD
patients. Surprisingly, parafunction
Muscular pathology
was strongly associated with the prev-
(myogenous pain/trigger points/combinations)
alence of headache; and patients with a gross difference between MI and
Absence of TMJ pathology
Bruxism and incisal and
CO had the highest coincidence with
premolar/molar wear
primary headache. This is remarkable
since an association between TMD
Horizontal differences
and headache is presumed, despite
Bruxism and incisal and premolar/molar wear
between CO and MI
various study results that concluded
greater than 3 mm
there is either no or only a weak rela-
Horizontal differences between CO and
tionship between occlusal parameters
MI greater than 3mm
Moderate consumption
and TMD.5,12,24,29,30 Extensive litera-
of alcohol/coffee
ture review found only 2 studies that
Moderate consumption of alcohol/coffee
reported similar results.9,44 Neverthe-less, there is evidence in the literature
who felt physically tense (28.4%), or combination. The highest frequency
P<.05 indicates significant difference
that headache patients are self-re-
were diagnosed with muscular (36%) of occurrence of TTH and migraine
cally tense, and who simultaneously in TMD patients,5,13,20 cause continu- ported bruxers,14, 16 and both bruxing
or TMJ pathology (14%) also suffered headache was observed with severe
The purpose of the study was to
exhibited muscular pathology or TMD. ous strong mechanoreceptive input to and headache decrease with age.2,3,8,9
from recurrent headache. The com- parafunction and horizontal differ- explore associations between TMD,
The effect of muscle pathology many processing neurons in the spinal Treatment with occlusal splints has
puting of correlation coefficients and ences longer than 3 mm between aberrant stomatognathic function
on headache has been previously pub- cord.41 Among those are a wide dy- been reported to reduce headache in-
regression analysis showed significant MI and CO, with a highly significant and the occurrence of headache. Cor-
lished.5,13,20 Graff-Radford19 contends namic range of neurons that not only tensity and frequency.31-33
associations among age, gender, edu- (P≤.001) association. Healthy TMJs relations can be assumed due to the
that TMD elicit or exacerbate headache receive diverse input, but also project
Ciancaglini et al9 asserted that
cational aspects, stimulant consump- and moderate consumption of stim- findings of the study. Therefore, the
because of an overlap of innervations to different processing neurons, in- lengthy muscular stimulation by para-
tion, TMD, horizontal differences be- ulants seemed to have a protective hypothesis that there is an interrela-
with the trigeminal nerve. As previ- cluding pain neurons.42,43 Sustained function may lower the thresholds of
tween MI and CO greater than 3 mm, effect on the evolution of headache. tionship between headache, TMD,
ously stated, the trigeminal nuclei for neuronal stimulation triggers mecha- pain sensation. Congruent findings
and masticatory and cervical muscle Table IV and V depict descriptive sta- and occlusal interferences is ac-
mechanoreceptive,
proprioceptive, nisms of synaptic plasticity,38 and were published by Arima et al58 and
pathology with the appearance of tistics by relevant outcome variables cepted. Of the 1031 patients in this
and pain sensations are in close prox- eventually new synaptic pathways are Christensen et al.59 An independent
headache. Variables such as young and the odds ratios for the prevalence study, 67.4% claimed to suffer from
imity.36,37,40 Interneurons between the created.43 That may explain the occur- relation between occlusal factors
age, female gender, educational level, of headaches.
frequent headaches. As reported pre-
different nuclei areas, namely spinal rence and perpetuation of headache and headache is plausible. However,
severe parafunction, muscle or TMJ
The data did not indicate any viously,24,6,7,35 this study demonstrated
trigeminal nuclei oralis, interpolaris, in patients whose stomatognathic as previously stated, this study was
pathology, and greater than 3 mm dif- significant prevalence of headaches that tension-type headache was most
and caudalis, have been identified, system is disturbed in any way. The a cross-sectional study without sys-
ference between CO and MI correlated in patients who were suffering from frequently diagnosed, women were
and their importance in the pro- relation between TMD and the oc- tematic randomization. Therefore, se-
with a higher prevalence of every kind chronic pain in any region of the body significantly more affected by primary
cessing of orofacial proprioceptive currence of headache is still a matter lection bias cannot be ruled out and
of headache, and increased the risk of other than head, neck, face, and the headache, headache decreased with
and pain information has been de- of scientific contention, even though cause-effect conclusions must be con-
the occurrence of migraine and ten- stomatognathic system.
age, and there was a higher prevalence
scribed.41-43 Tense muscles, inflamed there is increasing evidence that TMD sidered with care. To explore the as-
sion-type headache, separately and in
of headache in patients who felt physi-
TMJ structures, or bruxism, detected and headache frequently appear to- sociations of occlusion headache and
The Journal of Prosthetic Dentistry
Volume 105 Issue 6
TMD further, well-controlled random-
12.Bertoli FM, Antoniuk SA, Bruck I, Xavier
28.Gesch D, Bernhardt O, Kirbschus A. Asso-
40.Sessle BJ, Hu JW, Amano N, Zhong G. Con-
51.Hagen K, Thoresen K, Stovner LJ, Zwart JA.
ized longitudinal studies are necessary.
GR, Rodrigues DC, Losso EM. Evaluation
ciation of malocclusion and functional oc-
vergence of cutaneous, tooth pulp, visceral,
High dietary caffeine consumption is asso-
of the signs and symptoms of temporoman-
clusion with temporomandibular disorders
neck and muscle afferents onto nociceptive
ciated with a modest increase in headache
Furthermore, consistent with the
Within the limitations of this study
dibular disorders in children with head-
(TMD) in adults: a systematic review of
and non-nociceptive neurones in trigemi-
prevalence: results from the Head-HUNT
literature,2,49,50,53,54 physical exercise, the following conclusions were drawn:
aches. Arq Neuropsiquiatr 2007;65:251-5.
population-based studies. Quintessence Int
nal subnucleus caudalis (medullary dorsal
Study. J Headache Pain 2009;10:153-9.
and psychological or general health
1. Parafunction and differences 13.Svensson P. Muscle pain in the head: over-
horn) and its implications for referred pain.
52.Yap AU, Dworkin SF, Chua EK, List T, Tan
lap between temporomandibular disorders
29.Michelotti A, Farella M, Gallo LM, Veltri
KB, Tan HH. Prevalence of temporoman-
status did not influence the preva- between CO and MI, identified by
and tension-type headaches. Curr Opin
A, Palla S, Martina R. Effect of occlusal
41.Broton JG, Hu JW, Sessle BJ. Effects of
dibular disorder subtypes, psychologic
lence of headache. Of the analyzed clearly visible tracks longer than 3
interference on habitual activity of human
temporomandibular joint stimulation on
distress and psychological dysfunction in
demographic factors, only education
14.Molina OF, dos Santos J Jr, Nelson SJ,
masseter. J Dent Res 2005;84:644-8.
nociceptive and nonnociceptive neurons
Asian patients. J Orofac Pain 2003;17:21-8.
mm, are related to the occurrence of
Grossman E. Prevalence of modalities of
30.Kahn J, Tallents RH, Katzberg RW, Ross
of the cat's trigeminal subnucleus caudalis
53.Rasmussen BK. Migraine and tension-
level showed any effect on the etiol- headache. These findings are in con-
headaches and bruxism among patients
ME, Murphy WC. Prevalence of dental oc-
(medullary dorsal horn). J Neurophysiol
type headache in a general population:
ogy of headache. These discoveries trast with previously published lit-
with craniomandibular disorder. Cranio
clusal variables and intraarticular temporo-
precipitating factors, female hormones,
mandibular disorders: Molar relationship,
42.Hu JW. Response properties of nociceptive
sleep pattern and relation to lifestyle. Pain
are in contrast with published data. erature and must be interpreted with 15.Molina OF, dos Santos Júnior J, Nelson
lateral guidance, and nonworking side
and non-nociceptive neurons in the rat's
The literature states that demograph- care due to the design of this study.
SJ, Nowlin T. Profile of TMD and bruxer
contacts. J Prosthet Dent 1999;82:410-5.
trigeminal subnucleus caudalis (medul-
54.Merikangas KR, Angst J, Isler H. Migraine
ic factors, such as income, education,
2. Consistent with previous litera-
compared to TMD and nonbruxer patients
31.Kemper JT Jr, Okeson JP. Craniomandibular
lary dorsal horn) related to cutaneous and
and psychopathology. Ann Gen Psychiatry
regarding chief complaint, previous consul-
disorders and headaches. J Prosthet Dent
deep craniofacial afferent stimulation and
general satisfaction and future fears ture, female gender, middle age (30 to
tations, modes of therapy, and chronicity.
modulation by diffuse noxious inhibitory
55.D'Alessandro R, Benassi G, Lenzi PL. Epi-
and hopes are strongly associated 60 years), and muscular pathology,
32.Magnusson T, Carlsson GE. Changes in re-
controls. Pain 1990;41:331-45.
demiology of headache in the Republic of
with the prevalence of headache.49,51
such as myogenic pain, trigger points, 16.Costa AL, D'Abreu A, Cendes F. Temporo-
current headache and mandibular dysfunc-
43.Sessle BJ. Neural mechanisms and path-
San Marino. J Neurol Neurosurg Psychiatry
mandibular joint internal derangement:
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ways in craniofacial pain. Can J Neurol Sci
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33.Magnusson T, Carlsson GE. A 2½- year
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17.Wänman A. Craniomandibular disorders
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Committee of the International Headache
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the presented data, regression analy-
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35.Manzoni GC, Granella F, Sandrini G, Caval-
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ness? J Orofac Pain 1999;13:104-14.
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organization of trigeminal subnucleus
47.John MT, Hirsch C, Reiber T, Dworkin S.
60.Christensen LV, Tran KT, Mohamed SE.
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lar orthosis approach to treatment. Cranio
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ache. Neurol Clin 2009;27:525-35.
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Corresponding author:
The results of the present study
headache, icluding TMD signs and symp-
tients. J Craniomandib Disord 1989;3:71-4.
48.Rasmussen BK. Migraine and tension-
Dr Matthias Troeltzsch
22.Liljeström MR, Le Bell Y, Anttila P, Aromaa
37.Dessem D, Moritani M, and Ambalavanar
type headache in a general population:
Maximilianstrasse 5
indicate strong relationships be-
toms, and their impact on quality of life.
Results of the Study of Health in Pomerania
M, Jämsä T, Metsähonkala L, et al. Head-
R. Nociceptive Craniofacial Muscle Primary
psychosocial factors. Int J Epidemiol
tween stomatognathic disorders and
(SHIP). Quintessence Int 2005;36 :55-64.
ache children with temporomandibular dis-
Afferent Neurons Synapse in Both the Ros-
headache. Still, the study has limita- 6. Ciancaglini R, Radaelli G. The relation-
orders have several types of pain and other
tral and Caudal Brain Stem. J Neurophysiol
49.Waters WE. Migraine: intelligence, social
Fax: +49-981-77102
symptoms. Cephalalgia 2005;25:1054-60.
2007; 98:214-223.
class, and familiar prevalence. Br Med J
tions. The design is cross-sectional,
ship between headache and symptoms of
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38.Messlinger K. Migraine: where and how
determining the state of the patient
population. J Dent 2001,29:93-8.
F. Association between anterior tooth wear
does the pain originate? Exp Brain Res
50.Abramson JH, Hopp C, Epstein LM. Mi-
Copyright 2011 by the Editorial Council for
at only one point in time. The con- 7. Wöber-Bingöl C, Wöber C, Karwautz A,
and temporomandibular disorder pain
graine and non- migrainous headaches. A
The Journal of Prosthetic Dentistry.
in a German population. J Prosthet Dent
39.Burstein R, Jakubowski M. Unitary hy-
community survey in Jerusalem. J Epidemiol
current occurrence of headache and
Vesely C, Wagner-Ennsgraber C, Am-
minger GP, et al. Diagnosis of headache in
pothesis for multiple triggers of the pain
Community Health 1980;34:188-93.
other problems may be by chance. No
childhood and adolescence: a study in 437
24.John MT, Frank H, Lobbezoo F, Drangsholt
and strain of migraine. J Comp Neurol
systematic process of randomization
patients. Cephalalgia 1995;15:13-21.
M, Dette KE. No association between incisal
8. Pergamalian A, Rudy TE, Zaki HS, Greco
tooth wear and temporomandibular disor-
was applied; thus, there is a risk of
CM. The association between wear facets,
ders. J Prosthet Dent 2002;87:197-203.
selection bias. In addition, while the
bruxism, and severity of facial pain in pa-
25.Seligman DA, Pullinger AG. The role
of functional occlusal relationships in
significance may be strong for some
tients with temporomandibular disorders. J
Prosthet Dent 2003;8:194-200.
temporomandibular disorders: a review. J
results, the reader should note the 9. Ciancaglini R, Gherlone EF, Radaelli G. The
Craniomandib Disord 1991;5:265-79.
extent of the confidence intervals and
relationship of bruxism with craniofacial
26.Marzooq AA, Yatabe M, Ai M. What types
of occlusal factors play a role in temporo-
the number of patients suffering from
pain and symptoms from the masticatory
system in the adult population. J Oral
mandibular disorders? A literature review. J
such problems. Due to the limited
Med Dent Sci 1999;46:111-6.
number of subjects who displayed 10. Lupoli TA, Lockey RF. Temporomandibular 27.Hagag G, Yoshida K, Miura H. Occlusion,
prosthodontic treatment, and temporo-
gross occlusal aberrations, statistical
dysfunction: an often overlooked cause of
chronic headaches. Ann Allergy Asthma
mandibular disorders: a review. J Med Dent
significance is weak and the chance
Sci 2000;47:61-6.
that these observations are coinci- 11.Kraus S. Temporomandibular disorders, dental cannot be ruled out.
head and orofacial pain: cervical spine
considerations. Dent Clin North Am
The Journal of Prosthetic Dentistry
Volume 105 Issue 6
TMD further, well-controlled random-
12.Bertoli FM, Antoniuk SA, Bruck I, Xavier
28.Gesch D, Bernhardt O, Kirbschus A. Asso-
40.Sessle BJ, Hu JW, Amano N, Zhong G. Con-
51.Hagen K, Thoresen K, Stovner LJ, Zwart JA.
ized longitudinal studies are necessary.
GR, Rodrigues DC, Losso EM. Evaluation
ciation of malocclusion and functional oc-
vergence of cutaneous, tooth pulp, visceral,
High dietary caffeine consumption is asso-
of the signs and symptoms of temporoman-
clusion with temporomandibular disorders
neck and muscle afferents onto nociceptive
ciated with a modest increase in headache
Furthermore, consistent with the
Within the limitations of this study
dibular disorders in children with head-
(TMD) in adults: a systematic review of
and non-nociceptive neurones in trigemi-
prevalence: results from the Head-HUNT
literature,2,49,50,53,54 physical exercise, the following conclusions were drawn:
aches. Arq Neuropsiquiatr 2007;65:251-5.
population-based studies. Quintessence Int
nal subnucleus caudalis (medullary dorsal
Study. J Headache Pain 2009;10:153-9.
and psychological or general health
1. Parafunction and differences 13.Svensson P. Muscle pain in the head: over-
horn) and its implications for referred pain.
52.Yap AU, Dworkin SF, Chua EK, List T, Tan
lap between temporomandibular disorders
29.Michelotti A, Farella M, Gallo LM, Veltri
KB, Tan HH. Prevalence of temporoman-
status did not influence the preva- between CO and MI, identified by
and tension-type headaches. Curr Opin
A, Palla S, Martina R. Effect of occlusal
41.Broton JG, Hu JW, Sessle BJ. Effects of
dibular disorder subtypes, psychologic
lence of headache. Of the analyzed clearly visible tracks longer than 3
interference on habitual activity of human
temporomandibular joint stimulation on
distress and psychological dysfunction in
demographic factors, only education
14.Molina OF, dos Santos J Jr, Nelson SJ,
masseter. J Dent Res 2005;84:644-8.
nociceptive and nonnociceptive neurons
Asian patients. J Orofac Pain 2003;17:21-8.
mm, are related to the occurrence of
Grossman E. Prevalence of modalities of
30.Kahn J, Tallents RH, Katzberg RW, Ross
of the cat's trigeminal subnucleus caudalis
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Source: http://elandersdental.se/wp-content/uploads/Headaches-and-TMD.pdf
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HOLY TRINITY CHURCH EICESTER MISSION LINKS AUTUMN 2014 Background, News, MISSION LINKS AUTUMN 2014 3 Here at Holy Trinity we give Our Mission Links are Andy & Innes Shudall 10% of all giving by the individuals and organisations (TSCF New Zealand) congregation, including Gift that we have chosen to Aid, to people and support through involvement Roger & Alison Morgan