Kamiloglu Beste, Kelahmet Umay
Consultant Orthodontist DDS PhD, Department of Orthodontics, Faculty of Dentistry, Near East University, Mersin 10, Turkey.
BMC Res Notes. 2014 Jun 7;7:346. doi: 10.1186/1756-0500-7-346.
The aim of this study was two-fold; (1) to evaluate the prevalence and patterns of impacted canines and transmigrated canine teeth, and (2) to evaluate the possible relationships between impacted teeth, malocclusions and systemic conditions in an orthodontic patient population.
The clinical records and panoramic radiographs of 453 patients [201 (44.3%) male and 252 (55.7%) female] referred to our outpatient clinic between January 2008 and January 2012 were retrospectively evaluated. The number, position, localization (right/left) and transmigration of teeth, as well as sex, age and systemic conditions of patients, were noted. An impacted canine was considered to be transmigrated when at least part of its length had crossed the midline. Complications related to impacted teeth (pain, cystic changes, root resorption or eruption disturbance of adjacent teeth) were also noted. A p-value less than 0.05 was considered statistically significant.
Impacted and transmigrated canine teeth were found in 16 (3.53%) and two (0.44%) patients in the study group, respectively. Root resorption was seen in four teeth adjacent to impacted canines. No statistical difference was found among gender, location, malocclusion and impaction of the teeth (p > 0.05). However, maxillary canine impaction occurred significantly more frequently than mandibular canine impaction (p < 0.05).
The early detection of impacted as well as transmigrated teeth is crucial for successful treatment, therefore demographic studies are important. Although larger samples are required, this study provides a baseline regarding the frequency and type of impacted canines in this particular population.
本研究的目的有两个；（1）评估埋伏尖牙和异位尖牙的患病率及模式，以及（2）评估正畸患者群体中埋伏牙、错牙合畸形和全身状况之间的可能关系。
回顾性评估2008年1月至2012年1月转诊至我们门诊的453例患者（男性201例[44.3%]，女性252例[55.7%]）的临床记录和全景X线片。记录牙齿的数量、位置、定位（右/左）和异位情况，以及患者的性别、年龄和全身状况。当埋伏尖牙至少部分长度越过中线时，被认为是异位的。还记录了与埋伏牙相关的并发症（疼痛、囊性改变、牙根吸收或相邻牙齿萌出障碍）。p值小于0.05被认为具有统计学意义。
研究组中分别有16例（3.53%）和2例（0.44%）患者发现埋伏尖牙和异位尖牙。在与埋伏尖牙相邻的四颗牙齿中发现了牙根吸收。在牙齿的性别、位置、错牙合畸形和埋伏情况之间未发现统计学差异（p>0.05）。然而，上颌尖牙埋伏的发生率明显高于下颌尖牙埋伏（p<0.05）。
早期发现埋伏牙和异位牙对于成功治疗至关重要，因此人口统计学研究很重要。尽管需要更大的样本，但本研究提供了关于该特定人群中埋伏尖牙的频率和类型的基线。
