A 2.5-year prospective cohort study of the psychological properties associated with the incidence of TMD in young adults

  • ASANO Akiko
    Department of Educational Center for the Clinical Dentistry, Iwate Medical University
  • TANABE Norimasa
    Department of Fixed Prosthodontics, School of Dentistry, Iwate Medical University
  • FUJISAWA Masanori
    Division of Fixed Prosthodontics, Department of Restorative and Biomaterials Sciences, School of Dentistry, Meikai University

Bibliographic Information

Other Title
  • 若年者における顎関節症発症と心理特性に関する2.5年間の前向きコホート調査

Search this article

Abstract

An investigative joint study to determine the psychological factors contributing to the incidence of temporomandibular disorder (TMD) was conducted on healthy volunteers with no current or past histories of TMD.<BR>Since the TMD population mainly consists of patients in their 20s, 207 dental students (139 males and 68 females, mean age 20.4 years) attending Iwate Medical University were involved in this study. Initially, all subjects were asked to fill out a questionnaire screening mandibular functions as well as a psychological questionnaire regarding Y-G, CMI, SDS, MAS and life events and life changes (LeLc). The incidence of TMD symptoms was evaluated 2.5 years later through a self-reported questionnaire.<BR>Of 171 subjects who completed the whole examination 2.5 years later, 25 patients (15 males and 10 females) reported experiencing pain in the temporomandibular joint and/or masticatory muscle and/or jaw opening limitation at the 2.5-year follow-up survey.<BR>A logistic regression analysis was carried out to determine the basic factors that reveal type B and type E of Y-G, and type I of MAS, respectively. A Mann-Whitney U-test was carried out to determine intrinsic factors that show LeLc. A Kruskal-Wallis test and a Bonferroni correction test were performed, revealing that type B and E of Y-G and type I of MAS had a higher life score than the other types. The results of this study suggest that emotional instability and deep anxiety may be contributing factors that cause TMD, and that patients with TMD suffer greater stress than those who are not physically impaired.

Journal

Citations (5)*help

See more

References(42)*help

See more

Details

Report a problem

Back to top