Objective and subjective assessment of masticatory function for patients with temporomandibular disorder in Korea

Abstract

This study examined the differences in the masticatory function of patients with temporomandibular disorder (TMD) in Korea. The experimental groups were as follows: 23 patients with painful arthralgia classified as pain group according to the research diagnostic criteria for temporomandibular disorder (RDC/TMC) and 28 patients with pain-free disc displacement and reduction classified as clicking group. The subjects were obtained from those who had visited Yonsei University Dental Hospital from 2007 to 2008. Twenty dental students without TMD symptoms were enroled as the normal control group. The Mixing Ability Index (MAI) was used as the objective index, and the Food Intake Ability (FIA) Index, Visual Analogue Scale (VAS) and oral health impact profile (OHIP) were used as the subjective indices. The MAI, FIA and VAS were significantly lower in the pain group than in the normal and clicking groups (P<0·05). The pain group showed a MAI, FIA and VAS of 16%, 81% and 67%, respectively, compared to that of the normal group. However, there were no significant differences in the MAI, FIA and VAS between the clicking and normal groups. The pain and clicking groups showed a 1·7 and 1·4 times higher OHIP value than the normal group (P<0·05). The MAI and subjective indices, such as the FIA (r=0·40) and VAS (r=0·48), showed a moderate correlation (P<0·01). In conclusion, pain is the main factor for the reduced masticatory function in patients with TMD in Korea, and the joint sound, not the masticatory function, affects the declining OHIP.

Assessment of masticatory function in patients with non‐sagittal occlusal discrepancies

“…The correlation coefficients between the maximum bite force, the MAI and the FIA in this study were in agreement with other studies, which reported moderate correlations between the subjective FIA and the objective MAI , and between the FIA and the maximum bite force .…”

Validity of Screening Methods for Periodontitis Using Salivary Hemoglobin Level and Self‐Report Questionnaires in People with Disabilities

“…However, measuring PD and clinical attachment level using a periodontal probe and assessing gingival inflammation by various indices are still the most reliable methods for diagnosing periodontal disease. In medicine and dentistry, some efforts have been made to measure the presence, severity, and risk of developing diseases, such as chronic inflammatory disease, alcohol abuse and dependence, and masticatory dysfunction, by using objective or subjective evaluation methods 33‐35 . These methods measure physical function, behavior, and mental problems by evaluating the physical or biologic factors or by using questions about behavior, habits, and awareness of disease.…”

Comparison between the SCL‐90‐R and MMPI in TMD patients with psychological problems

“…Several previous studies have reported significant correlations between objective signs and subjective symptoms of TMD (Kim et al , 2010; Ahn et al , 2011). However, the present study revealed that objective signs were not significantly correlated with subjective symptoms in TMD patients with psychological problems.…”