Personality, psychosocial and oral behavioural risk factors for temporomandibular disorder symptoms in Asian young adults

• Published in: Journal of oral rehabilitation Vol. 50; no. 10; pp. 931 - 939
• Main Authors: Yap, Adrian Ujin, Marpaung, Carolina
• Format: Journal Article
• Language: English
• Published: England Wiley Subscription Services, Inc 01-10-2023
• Subjects: Anxiety; oral behaviours; Personality; Personality traits; psychological distress; Risk factors; Sleep and wakefulness; somatisation; Temporomandibular joint; Temporomandibular joint disorders; Young adults; temporomandibular joint disorders; personality; somatisation; psychological distress; oral behaviours
• ISSN: 0305-182X; 1365-2842
• DOI: 10.1111/joor.13527

Background
The relation between personality, psychosocial factors, somatisation, andoral behaviours as risk factors to temporomandibular disorder symptoms have notbeen well established.
Objectives
This study examined the association of temporomandibular disorder (TMD) symptoms with personality traits, psychological distress, somatisation and oral behaviours. The psychosocial and oral behavioural risk factors for TMD symptoms were also established in Asian young adults.
Methods
Participants were recruited from a large private University. Based on the quintessential five TMD symptoms (5Ts) of the DC/TMD, the participants were stratified into those with no (NT), painful (PT), dysfunctional (DT) and mixed (MT) TMD symptoms. Personality traits, psychological distress, somatisation and oral behaviours were evaluated with the Big Five Inventory‐10 (BFI‐10), Depression, Anxiety, Stress Scales‐21 (DASS‐21), Patient Health Questionnaire‐15 (PHQ‐15) and Oral Behaviours Checklist (OBC) accordingly. Data were examined using Kruskal–Wallis/Mann–Whitney U and Chi‐squared tests, as well as multivariate logistic regression analysis (α = .05).
Results
Of the 420 young adults (mean age 22.7 ± 1.1 years) evaluated, 41.4% had no TMD symptoms, while 17.4%, 20.0% and 21.2% reported PT, DT and MT, respectively. Though personality traits did not vary notably, participants with MT and PT had significantly higher levels of negative affectivity, anxiety and stress than the NT group. Moreover, those with MT and PT presented significantly greater somatisation and more oral behaviours than the DT and NT groups. Multivariate regression analyses indicated that anxiety, somatisation, sleep‐related and waking‐state nonfunctional oral activities were associated with painful and/or dysfunctional TMD symptoms.
Conclusions
Except for sleep‐related oral activity, psychosocial and oral behavioural risk factors differed for painful, dysfunctional and mixed TMD symptoms in Asian young adults.
Association between the four risk factors to TMD symptoms.