title: Overbite and overjet are not related to self-report of temporomandibular disorder symptoms.
abstract: Overbite and overjet, especially high or low values, have been found in some studies to be associated with temporomandibular disorders (TMD). This study evaluates the relationship between overbite/overjet and three TMD self-report measures (pain, joint noises, limited mouth-opening). Subjects were from two population-based cross-sectional studies (3033 subjects). After adjustment for age and gender, high or low values of overbite were not associated with an increased risk of self-reported TMD pain as compared with a reference category of a normal overbite of 2 to 3 mm (-8 to -1 mm, odds ratio = 0.36, 95% confidence interval = 0.05-2.76; 6 to 15 mm, odds ratio = 1.08, 95% confidence interval = 0.68-1.72). Similar non-significant results were found for overjet and TMD pain, and for the association of overjet/overbite and joint noises or limited mouth-opening. This study provides the strongest evidence to date that there is no association between overbite or overjet and self-reported TMD.
authors.affiliation: Department of Prosthodontics, School of Dentistry, Martin Luther University Halle-Wittenberg, Halle/Saale, Germany. mtjohn@u.washington.edu
authors.forename: M T
authors.initials: MT
authors.lastname: John
authors.forename: C
authors.initials: C
authors.lastname: Hirsch
authors.forename: M T
authors.initials: MT
authors.lastname: Drangsholt
authors.forename: L A
authors.initials: LA
authors.lastname: Mancl
authors.forename: J M
authors.initials: JM
authors.lastname: Setz
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D002648:Child; D016001:Confidence Intervals; D003430:Cross-Sectional Studies; D005157:Facial Pain / Q000453:epidemiology; D005260:Female; D005858:Germany / Q000453:epidemiology; D006801:Humans; D016015:Logistic Models; D008297:Male; D008310:Malocclusion / Q000453:epidemiology*; D016017:Odds Ratio; D011159:Population Surveillance; D011378:Prognathism / Q000453:epidemiology; D012044:Regression Analysis; D012307:Risk Factors; D012737:Sex Factors; D013016:Sound; D013705:Temporomandibular Joint Disorders / Q000453:epidemiology*; D014313:Trismus / Q000453:epidemiology