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Published on: January 13, 2023
Third-molar extraction as a risk factor for temporomandibular disorder
1Orthodontics, University of Washington, Box 357446, Seattle, WA 98195, USA. ghuang@washington.edu
Journal of the American Dental Association (1939)
|November 4, 2006
Summary
Third-molar extraction is linked to an increased risk of developing temporomandibular disorder (TMD). This common dental procedure may contribute to a significant portion of TMD cases in young adults.
Area of Science:
- Oral and Maxillofacial Surgery
- Dental Public Health
Background:
- Third-molar extraction is a prevalent dental procedure in the U.S.
- Limited research exists on the association between third-molar extraction and temporomandibular disorder (TMD).
Purpose of the Study:
- To investigate the potential association between third-molar extraction and the development of TMD.
- To quantify the risk of TMD following third-molar extraction.
Main Methods:
- A longitudinal study followed 34,491 subjects from age 15 for at least five years.
- Exposure (third-molar extraction) and outcome (TMD) were identified using electronic dental insurance records.
- Survival analysis was employed to estimate the relative risk of TMD, controlling for confounding variables.
Main Results:
- The adjusted relative risk of developing TMD after third-molar extraction was 1.6 (95% CI: 1.3–2.0).
- Approximately 23% of TMD cases in the studied age group may be attributable to third-molar extraction.
- Fifty percent of subjects underwent third-molar removal by age 20.
Conclusions:
- Third-molar extraction is identified as a risk factor for temporomandibular disorder (TMD).
- Dental providers should consider this risk and implement strategies to minimize joint trauma during extraction procedures.
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