Papadopoulos Moschos A, Chatzoudi Maria, Karagiannis Vassilis
Department of Orthodontics, School of Dentistry, Aristotle University of Thessaloniki, Thessaloniki, Greece.
Am J Orthod Dentofacial Orthop. 2009 Sep;136(3):308.e1-10; discussion 308-9. doi: 10.1016/j.ajodo.2008.12.017.
The aim of this study was to investigate possible characteristic features and dental anomalies that accompany tooth transposition.
Several electronic databases were searched. Hand searching was also performed to identify potentially relevant studies. Initially, 409 articles were retrieved (399 by electronic searching, 10 by hand searching). After applying specific exclusion criteria, 5 studies were eligible for this meta-analysis. Meta-analysis was performed by determining the marginal mean proportions and the 95% confidence intervals estimated by the random-effect model. Evaluation of heterogeneity was also done with Q and I(2) statistics.
The lack of high-validity studies of the characteristic features and dental anomalies of tooth transposition was noted. The analysis of the data of the studies showed that tooth transposition seems to occur more often unilaterally than bilaterally, with maxillary prevalence and no sex preference, and it is significantly unrelated to dental anomalies, such as congenitally missing teeth, peg-shaped or hypoplastic teeth, or impacted teeth. There might be an association with overretained deciduous teeth.
Tooth transposition is an isolated phenomenon rather than a syndrome. It occasionally can be accompanied by other characteristic features and dental anomalies, but without distinct associations.
本研究旨在调查牙齿易位伴随的可能特征和牙齿异常情况。
检索了多个电子数据库，并进行了手工检索以识别潜在相关研究。最初检索到409篇文章（通过电子检索399篇，手工检索10篇）。应用特定排除标准后，有5项研究符合本荟萃分析的条件。通过确定边缘平均比例和随机效应模型估计的95%置信区间进行荟萃分析。还使用Q和I²统计量对异质性进行评估。
注意到缺乏关于牙齿易位特征和牙齿异常的高有效性研究。对研究数据的分析表明，牙齿易位似乎单侧发生比双侧更常见，以上颌发生率高且无性别偏好，并且与先天性缺牙、钉状或发育不全牙齿或阻生牙等牙齿异常无显著相关性。可能与乳牙滞留有关。
牙齿易位是一种孤立现象而非综合征。它偶尔可能伴有其他特征和牙齿异常，但无明显关联。
