Temporomandibular disorders - prevalence of symptoms and association with health behaviors and oral health-related quality of life

Thesis event information

Date and time of the thesis defence

Place of the thesis defence

University of Oulu, Dentopolis Markku Larmas auditorium H1091

Topic of the dissertation

Temporomandibular disorders - prevalence of symptoms and association with health behaviors and oral health-related quality of life

Doctoral candidate

Doctor of Dental Surgery (DDS) Ossi Miettinen

Faculty and unit

University of Oulu Graduate School, Faculty of Medicine, Research Unit of Population Health (PopH)

Subject of study

Dentistry

Opponent

Professor Timo Närhi, University of Turku

Custos

Professor Kirsi Sipilä, University of Oulu

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Temporomandibular disorders - prevalence of symptoms and association with health behaviors and oral health-related quality of life

The study investigated the prevalence of temporomandibular disorders (TMD) and their association with health behaviors among Finnish conscripts. The aim was also to examine the impact of psychosocial factors on oral health-related quality of life in patients with TMD. A total of 13,819 conscripts participated in the survey on TMD and health behaviors. Additionally, physical fitness tests and body mass index measurements were conducted. Psychosocial factors and oral health-related quality of life were assessed in a separate sample of 79 patients with TMD and 70 students as controls.

The results showed that the prevalence of TMD symptoms among conscripts ranged from 5.8% to 27.8%. The most significant health behavior factors related to TMD were heavy smoking and regular alcohol consumption. Poor physical fitness, low physical activity, and high body mass index were associated with TMD pain symptoms. TMD patients reported worse oral health-related quality of life compared to the control group. Various psychosocial factors, such as functional impairment due to pain, depression, and somatization symptoms, influenced oral health-related quality of life in both genders.

Based on the findings, the prevalence of TMD symptoms is relatively high among young adults. To prevent and manage TMD, it is important to reduce smoking and alcohol consumption while promoting physical activity and fitness. Additionally, TMD treatment should consider the impact of psychosocial factors on oral health-related quality of life. These results will contribute to enhancing the quality of life and treatment for patients with temporomandibular disorders in the future.
Last updated: 23.1.2024