牙易位的流行率：一项荟萃分析。
Prevalence of tooth transposition. A meta-analysis.
机构信息
Department of Orthodontics, School of Dentistry, Aristotle University, Thessaloniki, Greece.
出版信息
Angle Orthod. 2010 Mar;80(2):275-85. doi: 10.2319/052109-284.1.
OBJECTIVE
To synthesize currently existing data and investigate the prevalence of tooth transposition as well as its relation to gender, dental arch, and quadrant occurrence.
MATERIALS AND METHODS
Several electronic databases were searched in order to identify the potentially relevant studies. Initially, 591 papers were retrieved. After applying specific inclusion and exclusion criteria, nine studies were eligible for inclusion in this evaluation. Meta-analysis was performed by determining the event rate and the 95% confidence intervals estimated by the random effect model.
RESULTS
Analysis of the data of the primary studies revealed that tooth transposition has a mean prevalence of 0.33%. This prevalence seems to be the same between the two genders. However, tooth transposition appears more frequently in the maxilla than in the mandible and more unilaterally than bilaterally.
CONCLUSION
Tooth transposition is a rare phenomenon that affects various populations, including across genders, in a similar manner. Some maxillary predisposition exists, and its unilateral occurrence is higher than that of bilateral.
目的
综合现有数据，调查牙齿易位的发生率及其与性别、牙弓和象限发生的关系。
材料和方法
为了确定潜在相关的研究，我们检索了几个电子数据库。最初检索到 591 篇论文。在应用特定的纳入和排除标准后，有 9 项研究符合本评估的纳入标准。通过确定随机效应模型估计的事件率和 95%置信区间来进行荟萃分析。
结果
对主要研究数据的分析表明，牙齿易位的平均发生率为 0.33%。这种发生率似乎在两性之间相同。然而，牙齿易位在上颌中比在下颌中更常见，并且更单侧发生而不是双侧发生。
结论
牙齿易位是一种罕见的现象，影响着包括两性在内的各种人群，其发生方式相似。上颌存在一定的倾向性，其单侧发生的频率高于双侧。
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