土耳其正畸患者人群中先天性缺牙的患病率和分布：一项大型学术队列研究的结果。

Prevalence and distribution of hypodontia in a Turkish orthodontic patient population: results from a large academic cohort.

出版信息

Eur J Paediatr Dent. 2011 Jun;12(2):123-7.

Abstract

AIM

Purpose of this study is to investigate the prevalence and distribution of congenitally missing permanent teeth (CMT) in a Turkish orthodontic patient population.

MATERIALS AND METHODS

Panoramic radiographs, intraoral photographs and dental casts of 2761 patients (females 1677, males 1084) aged from 9 to 46 who underwent orthodontic treatment at Selcuk University Department of Orthodontics from 1990 to 2005 were retrospectively reviewed for CMT. A comprehensive chart review was conducted in all subjects. Patient and treatment-related data were registered in a computer database for comparative analysis.

RESULTS

When missing third molar data were included, prevalence of CMT in the overall population was 30.64% with no significant differences between male and female patients (p=0.546). On the other hand, prevalence of CMT excluding third molars was 6.77% with a significantly higher prevalence in females compared to male patients (7.63% vs. 5.44%, p=0.030). The most commonly congenitally missing tooth types in decreasing order were the third molars followed by maxillary lateral incisors and mandibular second premolars. The majority of missing third molars were located in the maxilla (55.7%) with no significant gender differences (p=0.334). 58.4% of CMT excluding third molars in females were located in the maxilla compared to only 40.8% in males (p=0.001). In both gender groups, majority of CMT excluding third molars were located in the anterior segment (55.6% and 58.4% in male and female patients respectively, p=0.713).

CONCLUSION

The most commonly congenitally missing tooth type is third molars followed by maxillary lateral incisors and mandibular second premolars in our population. Although there were no gender differences in prevalence and anatomical distribution of missing third molars, CMT excluding third molars was significantly more prevalent in females with predominantly maxillary distribution in our population.

摘要

目的

本研究旨在调查土耳其正畸患者群体中先天性缺失恒牙（CMT）的流行率和分布情况。

材料和方法

回顾性分析了 1990 年至 2005 年在塞尔丘克大学正畸科接受正畸治疗的 2761 名患者（女性 1677 名，男性 1084 名）的全景片、口腔内照片和牙模，以评估 CMT 的情况。对所有患者进行了全面的图表审查。患者和治疗相关数据被登记在计算机数据库中进行比较分析。

结果

当包括第三磨牙缺失数据时，总体人群中 CMT 的患病率为 30.64%，男女患者之间无显著差异（p=0.546）。另一方面，不包括第三磨牙的 CMT 患病率为 6.77%，女性患者的患病率明显高于男性患者（7.63%比 5.44%，p=0.030）。按缺失率降序排列，最常见的先天性缺失牙类型是第三磨牙，其次是上颌侧切牙和下颌第二前磨牙。大多数缺失的第三磨牙位于上颌（55.7%），男女之间无显著差异（p=0.334）。女性中不包括第三磨牙的 CMT 有 58.4%位于上颌，而男性只有 40.8%（p=0.001）。在男女两组中，不包括第三磨牙的 CMT 大部分位于前牙段（男性和女性患者分别为 55.6%和 58.4%，p=0.713）。