Internal derangement as a predictor of provoked pain on mouth opening: A magnetic resonance imaging study.
10.5624/isd.2017.47.4.219
- Author:
Kwang Joon KOH
1
;
Ha Na PARK
;
Kyoung A KIM
Author Information
1. Department of Oral and Maxillofacial Radiology, School of Dentistry and Institute of Oral Bioscience, Chonbuk National University, Jeonju, Korea. kkj1512@jbnu.ac.kr
- Publication Type:Original Article
- Keywords:
Magnetic Resonance Imaging;
Temporomandibular Joint;
Pain
- MeSH:
Humans;
Magnetic Resonance Imaging*;
Mastication;
Mouth*;
Palpation;
Temporomandibular Joint;
Temporomandibular Joint Disorders
- From:Imaging Science in Dentistry
2017;47(4):219-226
- CountryRepublic of Korea
- Language:English
-
Abstract:
PURPOSE: This study investigated the relationship between pain and internal derangement in temporomandibular disorder (TMD) patients using magnetic resonance imaging (MRI). MATERIALS AND METHODS: This study analyzed 356 TMD patients (712 temporomandibular joints [TMJs]). The inclusion criteria were the presence of spontaneous or provoked pain on one or both TMJs and having undergone MRI. The patients with provoked pain were divided into 3 groups: pain on palpation, pain on mouth opening, and pain on mastication. MRI was performed using a 1.5-T scanner. T1- and T2-weighted parasagittal and paracoronal images were obtained. According to the findings on the T1-weighted images, another 3 groups were created based on internal derangement: normal, disc displacement with reduction, and disc displacement without reduction. The MRI findings were independently interpreted by 2 experienced oral and maxillofacial radiologists at 2 different times. Statistical analysis was performed by the chi-square test using SPSS (version 12.0; SPSS Inc., Chicago, IL, USA). RESULTS: Provoked pain on mouth opening was found to be correlated with internal derangement in TMD patients (P < .05). However, spontaneous pain and provoked pain on palpation or mastication were not associated with internal derangement (P>.05). CONCLUSION: These results suggest that internal derangement was a significant predictor of provoked pain on mouth opening.
