Citation Information :
Pumklin J, Taechasubamorn P, Luehong A, Pramot S, Panyasoet C, Sowithayasakul T. Relationship between Temporomandibular Disorder and Risk Factors in Health Science Students: A Cross-sectional Study. World J Dent 2020; 11 (6):494-500.
Aim: Temporomandibular disorder (TMD) is a collective term involving masticatory muscles, temporomandibular joint (TMJ), and problems of associated structures. Several studies have demonstrated factors related to TMD signs and symptoms. However, these data are still limited in Thailand. This study aimed to (i) investigate the prevalence of TMD and (ii) to clarify the relationship between TMD and risk factors in Health Science students, Naresuan University, Phitsanulok, Thailand.
Materials and methods: Three hundred ninety-four subjects participated in the study. Temporomandibular disorder diagnosis was accomplished by a simplified tool for patient screening using a TMD questionnaire. Demographic data and parafunctional habits were collected by a self-assessed questionnaire. Suanprung Stress Test-20 (SPST-20) was used for stress level detection. The data were analyzed by independent t-test, Chi-square test, or Fisher\'s exact test at p value < 0.05.
Results: There were 133 males and 261 females. The mean age was 21.19 ± 1.39 years old. The prevalence of TMD was 32.7%. Trauma history, degree majors, clenching, chewing gum, cheek-biting, lip-biting, unilateral chewing, and stress were significantly correlated with TMD. In contrast, gender, age, academic year, history of orthodontic treatment, and some parafunctional habits indicated no relationship with TMD.
Conclusion: One-third of health science students at Naresuan University had TMD symptoms.
Clinical significance: The most common symptom was TMJ sound and several types of parafunctional habits were associated with TMD.
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