Huang I-Yueh, Wu Chung-Wei, Worthington Philip
School of Dentistry, College of Dental Science, Kaohsiung Medical University, Kaohsiung, Taiwan.
J Oral Maxillofac Surg. 2007 Jun;65(6):1186-90. doi: 10.1016/j.joms.2006.11.031.
To review the literature associated with displaced lower third molars, to introduce a modified method of retrieval of an accidentally displaced lower third molar tooth or root fragment, and to recommend rational guidelines for management.
A review of the literature was performed to record the types of displacements, patient's personal data, imaging used, and the surgical approaches with their complications. A modified technique for exploration and retrieval is described.
Nineteen reports were identified and reviewed. Some others could not be translated. In the 32 cases reviewed, there were no gender differences and the third and fourth decades of life were the most common time for this mishap to occur. Fragments were displaced into 5 different tissue spaces. The size of the fragments varied, but the whole tooth and fragment were displaced with equal frequency. Different methods of recovery were used.
The accidental displacement of a lower third molar during attempted extraction is a rare but potentially serious complication. Retrieval should be effected as soon as possible. Because of differences in the direction of displacement, the size of fragment, delay in retrieval, and tissue reactions, no one technique is uniformly applicable. The modified method we suggest appears to save time and have few complications.
回顾与下颌第三磨牙移位相关的文献，介绍一种改良的意外移位下颌第三磨牙或牙根碎片的取出方法，并推荐合理的处理指南。
对文献进行回顾，记录移位类型、患者个人资料、所用影像学检查以及手术方法及其并发症。描述了一种改良的探查和取出技术。
共识别并回顾了19篇报告。其他一些报告无法翻译。在所回顾的32例病例中，不存在性别差异，事故最常发生在30至40岁。碎片移位至5个不同的组织间隙。碎片大小各异，但完整牙齿和碎片移位的频率相同。采用了不同的取出方法。
拔除下颌第三磨牙时意外移位是一种罕见但可能严重的并发症。应尽快取出。由于移位方向、碎片大小、取出延迟和组织反应的差异，没有一种技术能普遍适用。我们建议的改良方法似乎节省时间且并发症少。
