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Missing Posterior Teeth and Risk of Temporomandibular Disorders

¹ Dept. of Oral Anatomy and Physiology and TMD,
² Dept. of Prosthetic Dentistry, School of Stomatology, Fourth Military Medical University, 145 West Changle Road, Xi’an, P.R. China 710032;
³ Dept. of Health Statistics, Faculty of Military Preventive Medicine, Fourth Military Medical University, 17 West Changle Road, Xi’an, P.R. China 710032; and
⁴ Dept. of Prosthetic Dentistry and Stomatognathic Physiology, Institute of Dentistry, University of Oulu, and Dept. of Oral and Maxillofacial Surgery, Oulu University Hospital, P.O. Box 5281, FIN-90014, Oulu, Finland

Correspondence: ^* mqwang{at}fmmu.edu.cn

There is disagreement about the association between missing posterior teeth and the presence of temporomandibular disorders (TMD). Here, the purpose was to investigate whether the number of missing posterior teeth, their distribution, age, and gender are associated with TMD. Seven hundred and forty-one individuals, aged 21–60 years, with missing posterior teeth, 386 with and 355 without TMD, were included. Four variables—gender, age, the number of missing posterior teeth, and the number of dental quadrants with missing posterior teeth—were analyzed with a logistic regression model. All four variables—gender (OR = 1.59, men = 1, women = 2), age (OR = 0.98), the number of missing posterior teeth (OR = 0.51), and the number of dental quadrants with missing posterior teeth (OR = 7.71)—were entered into the logistic model (P < 0.01). The results indicate that individuals who lose posterior teeth, with fewer missing posterior teeth but in more quadrants, have a higher prevalence of TMD, especially young women.

Key Words: temporomandibular disorders (TMD) • posterior tooth • occlusion • logistic regression analysis • survey

Journal of Dental Research, Vol. 88, No. 10, 942-945 (2009)
DOI: 10.1177/0022034509344387


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