Association of horizontal and vertical overlap with prevalence of temporomandibular disorders

• Published in: Journal of oral rehabilitation Vol. 29; no. 6; pp. 588 - 593
• Main Authors: Ćelić, R., Jerolimov, V.
• Format: Journal Article
• Language: English
• Published: Oxford UK Blackwell Science Ltd 01-06-2002
• Subjects: Adult; Chi-Square Distribution; Dentistry; horizontal overlap; Humans; Incisor - physiopathology; Male; Malocclusion - complications; temporomandibular disorders; Temporomandibular Joint Disorders - etiology; vertical overlap
• ISSN: 0305-182X; 1365-2842
• DOI: 10.1046/j.1365-2842.2002.00865.x

The aim of the study was to evaluate the relationship between horizontal (HO) and vertical overlap (VO) and prevalence of temporomandibular disorders (TMD) in a non‐patient population. Out of the total number of subjects (230), 65·7% subjects were classified as asymptomatic, 5·7% subjects had muscle disorders (MD) (myalgia), 9·1% subjects had disc displacement with reduction (DDR), while 19·6% subjects had disc displacement with reduction associated with muscle disorder (DDR + MD) (myalgia). The HO equal to or greater than 5 mm was significantly more prevalent in the symptomatic patients (MD, DDR, DDR + MD) than in the asymptomatic group (P < 0·001). The VO equal to or > 5 mm also demonstrated statistically significant difference (P < 0·006) between the symptomatic (suffering from DDR, and DDR + MD) and asymptomatic subjects. Conclusion of the study is that the HO and VO equal to or > 5 mm was more present in the group of subjects with diagnosis of a TMD (DDR and MD), what distinguishes this group from the group of asymptomatic subjects.