MRI evaluation of condylar bone regeneration after temporomandibular joint disc reduction and suture and analysis of factors affecting bone regeneration
10.3760/cma.j.cn112144-20230817-00090
- VernacularTitle:颞下颌关节盘复位缝合术后髁突骨再生的MRI表现及影响骨再生相关因素分析
- Author:
Zhiyu ZHANG
1
;
Jiaoyan YANG
;
Yiming XING
;
Weina ZHOU
;
Ping ZHANG
;
Hongbing JIANG
Author Information
1. 南京医科大学附属口腔医院口腔颌面外科 江苏省口腔疾病研究重点实验室 江苏省口腔转化医学工程研究中心，南京 210029
- Keywords:
Mandibular condyle;
Bone regeneration;
Magnetic resonance imaging;
Temporomandibular disorders;
Disc reduction and suture techniques
- From:
Chinese Journal of Stomatology
2023;58(10):1004-1009
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To evaluate the MRI manifestations of condylar bone regeneration after disc reduction and suture for anterior disc displacement without reduction (ADDWoR) patients and to analyze the relevant factors affecting bone regeneration.Methods:A total of 61 patients of 75 joints with ADDWoR who attended the Department of Maxillofacial Surgery of the Affiliated Hospital of Stomatology of Nanjing Medical University from April 2020 to December 2021 were enrolled in the study. The characteristics of MRI condylar bone regeneration were analyzed before and after surgery (follow-up for 6 months or more), and logistic regression analysis was performed on the influencing factors of bone regeneration.Results:The new bone formation of the condyle was found in 28 patients, with age of (20.2±4.9) years. However, there were 33 patients that had no condylar bone regeneration, with age of (41.9±17.5) years. A total of 35 joints in this study were found new bone formation. There were 16 joints (45.7%) had new bone formation on the posterior slope of the condyle, 10 joints (28.6%) around the condyle, 6 joints (17.1%) on the anterior slope of the condyle, and only 3 joints (8.6%) on the top of the condyle. Multivariate logistic regression analysis showed that age, preoperative disc length and degree of condylar bone resorption correlated with postoperative condylar bone regeneration( P<0.05). Patients younger than 30 years with non-shortened preoperative disc length and less condylar bone resorption have a higher probability of new bone formation. Conclusions:The condyle has bone regeneration capacity after correcting the abnormal relationship between disc and condyle, and young age, non-shortened preoperative disc length and less condylar bone resorption are conducive to postoperative condylar bone regeneration.
