Hyun Hong-Keun, Lee Su-Jin, Lee Sang-Hoon, Hahn Se-Hyun, Kim Jung-Wook
Department of Pediatric Dentistry and Dental Research Institute, Seoul National University School of Dentistry, Seoul, Korea.
J Oral Maxillofac Surg. 2009 Dec;67(12):2639-43. doi: 10.1016/j.joms.2009.07.041.
The purpose of the present study was to analyze the clinical characteristics and complications of patients with mesiodens.
Using the radiographic reviews of patients who visited Seoul National University Dental Hospital from January 2005 through January 2008, 919 patients were identified as having mesiodens (total 1,200 mesiodentes). The number, location, position, eruption status, shape, direction, and complications of the mesiodens and gender and age were collected and analyzed.
The mean patient age was 11.05 years (median 7.58) with a male/female ratio of 2.74:1. The results showed that 71.38% of the patients had 1 mesiodens, 27.75% had 2, 0.65% had 3, and 0.22% had 4 mesiodentes. Complications occurred in 46.92% of the mesiodentes. Of the complications, midline diastema was observed in 35.34%, delayed eruption in 20.60%, displacement in 16.60%, rotation in 11.02%, root resorption of adjacent teeth in 7.58%, cystic changes or cyst formation in 5.29%, and nasal eruption in 3.58%.
Complications were found in approximately one half of the patients with a mesiodens. Early detection and timely surgical intervention should be emphasized to prevent unwanted complications.
本研究旨在分析正中多生牙患者的临床特征及并发症。
通过对2005年1月至2008年1月期间就诊于首尔国立大学牙医院患者的影像学检查结果进行回顾，确定919例患者患有正中多生牙（共1200颗正中多生牙）。收集并分析正中多生牙的数量、位置、方向、萌出状态、形态、并发症以及患者的性别和年龄。
患者的平均年龄为11.05岁（中位数为7.58岁），男女比例为2.74:1。结果显示，71.38%的患者有1颗正中多生牙，27.75%有2颗，0.65%有3颗，0.22%有4颗正中多生牙。46.92%的正中多生牙出现并发症。其中，中线间隙占35.34%，萌出延迟占20.60%，移位占16.60%，旋转占11.02%，邻牙牙根吸收占7.58%，囊性改变或囊肿形成占5.29%，鼻腔萌出占3.58%。
约半数正中多生牙患者出现并发症。应强调早期发现并及时进行手术干预，以预防不良并发症的发生。
