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. 2024 Nov 4:17:3565-3575.
doi: 10.2147/JPR.S490269. eCollection 2024.

The Association Between Specific Oral Behaviors and the Number of Temporomandibular Disorder Symptoms in the General Population: A Cross-Sectional Study

Yihong Tian #  1   2 , Yanyue Tan #  3 , Ming Yang  1 , Xiayang Lv  3 , Yunhao Zheng  1 , Qiang Zhang  4 , Yanyu Sun  1 , Jun Wang  1   2 , Xin Xiong  1   2
Affiliations

The Association Between Specific Oral Behaviors and the Number of Temporomandibular Disorder Symptoms in the General Population: A Cross-Sectional Study

Yihong Tian et al. J Pain Res. .

Abstract

Objective: This study aimed to thoroughly explore the relationship between individual oral behavior and the differing numbers of temporomandibular disorder (TMD) symptom in the general population.

Methods: A total of 565 participants were recruited and completed a questionnaire containing demographic characteristics, eight specific oral behaviors, and five major TMD symptoms (5Ts) checklist. Multivariate linear regression analysis was performed to assess the relationship between individual oral behavior and the number of TMD symptoms, after controlling for confounders.

Results: The prevalence of TMD symptoms was up to 38.2% in the general population, with 64.6% of the participants engaging in one or more oral behaviors. Female participants showed a stronger positive association with most oral behaviors than males. Moreover, wake oral behaviors exhibited a higher correlation coefficient value with TMD symptom number than sleep oral behaviors. Among the eight oral behaviors, bruxism in sleep exhibited no significant correlation with the of TMD symptom number (P>0.05). Seven other specific oral behaviors were significantly correlated with the number of TMD symptoms by multivariate linear regression analysis (P<0.01). The associations between the seven oral behaviors and TMD symptom number remained significant in sleep posture pressuring jaw (β: 0.165, 95% CI: 0.080-0.250), bruxism in awake (β: 0.341, 95% CI: 0.132-0.550), teeth clenching (β: 0.422, 95% CI: 0.264-0.580), pressing, holding, or touching teeth together (β: 0.282, 95% CI: 0.169-0.395), holding or tightening muscles without clenching (β: 0.447, 95% CI0.304-0.589), holding jaw forward or to the side (β: 0.694, 95% CI0.526-0.861), and holding jaw in rigid or tense position (β: 0.571, 95% CI0.418, 0.724) after adjustment for demographic factors (P<0.01).

Conclusion: There was a positive association between seven specific oral behaviors and TMD symptom number. Individuals with higher frequency of specific oral behaviors are more likely to suffer from more TMD symptoms. Sleep bruxism exhibited no association with TMD symptoms and symptom number.

Keywords: TMD symptom number; cross-sectional study; oral behaviors; temporomandibular disorders.

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Conflict of interest statement

The authors declare that they have no conflicts of interest.

Figures

Figure 1
Figure 1
Upset plot.
Figure 2
Figure 2
Proportions of oral behaviors among different groups of symptoms.
Figure 3
Figure 3
Spearman correlation coefficients heatmap. Abbreviations: OB, oral behavior; Num of Symptom, number of symptoms.
See this image and copyright information in PMC

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