关键词: 可复性关节盘前移位, 牙合关系, 头影测量, 磁共振成像, Meta分析

Abstract:

Objective    To systematically evaluate the difference in dental relationship between patients with disc displacement with reduction and people with normal disc position. Methods    The related compositions in Cochrane Library，Embase，PubMed，CNKI and Wanfang database were retrieved from Jan，2000 to March，2018. The two researchers extracted data independently，and assessed quality of the selected articles based on the Newcastle-Ottawa Scale. The Meta-analysis was performed by using Reman 5.3. Results    Totally 7 articles were included in the study，which were the control trials；255 patients were with disc displacement with reduction and 279 patients with normal disc position. Meta-analysis showed overbite，overjet and L1-MP were bigger，while L1-FH and U1-L1 were smaller in the group of disc displacement with reduction，and the differences were statistically significant （P < 0.05）；the difference in U1-FH was not statistically significant （P > 0.05）. Conclusion    The existing studies have shown that the lower incisors are more flared，the angle of upper and lower incisors is smaller，and the overbite and overjet are bigger in patients with disc displacement with reduction than in people with normal disc position.

Key words: disc displacement with reduction, dental relationship, cephalometrics, MRI, Meta-analysis