医学
颞下颌关节
髁突
曼惠特尼U检验
威尔科克森符号秩检验
磁共振成像
口腔正畸科
统计显著性
方差分析
年龄组
牙科
流离失所(心理学)
学生t检验
内科学
心理学
人口学
社会学
心理治疗师
放射科
作者
Miaomiao Yuan,Pei Shen,Yang Chen
标识
DOI:10.3760/cma.j.cn112144-20200718-00427
摘要
Objective: To compare changes of condylar height, disc length and displaced distance in adolescent temporomandibular joint (TMJ) disc displacement with or without arthroscopic discopexy. Methods: From September 2015 to November 2018, adolescents with magnetic resonance image (MRI) comfirmed disc displacement without reduction (DDwoR) were recruited in operation group (OG) and control group (CG) and were classified into five subgroups according to age (11-14 years, 15-16 years, 17-18 years, 19-20 years and 21-24 years). Changes of condylar height, disc length and displaced distance were measured before and after follow-up MRI. Student's t-test, Welch's t-test, Mann-Whitney U test, Wilcoxon signed-rank test, One-way ANOVA and Kruskal-Wallis test were used; P-value less than 0.05 was considered statistically significant. Results: One hundred and seventy two patients were recruited in the present study. One hundred and twenty six cases patients (183 joints, 17 males, 109 females, mean age 17.4±3.0 years) were in OG and 119 patients (175 joints, 20 male, 99 females, mean age 17.1±3.1) in CG. The mean follow-up time were 8.4 (2.7-22.0) and 9.5 (3.0-22.1) months respectively. Average condylar height changes of OG were significantly greater than CG (1.3±1.8 mm vs -0.6±1.5 mm, P 0.05). After follow-up in CG, further displaced disc was observed (P 0.05). Conclusions: DDwoR in adolescents resulted in decreased TMJ condylar height while arthroscopic discopexy restored growth potential and promoted condylar new bone formation which was most prominent during growth period.
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