尼日利亚正畸患者上颌侧切牙的先天性缺失模式及形态变异

PATTERN OF AGENESIS AND MORPHOLOGIC VARIATION OF THE MAXILLARY LATERAL INCISORS IN NIGERIAN ORTHODONTIC PATIENTS.

作者信息

Yemitan T A, Adediran V E, Ogunbanjo B O

机构信息

Department of Child Dental Health, Lagos State University College of Medicine, Lagos, Nigeria.

出版信息

J West Afr Coll Surg. 2017 Jan-Mar;7(1):71-91.

PMID:29951456

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6018031/

Abstract

BACKGROUND

Congenitally missing or aberrant morphology of maxillary lateral incisors may cause aesthetic and functional impairment of the affected individual. There is however paucity of information on its prevalence and pattern of presentation among Nigerians.

AIM

To determine the prevalence of agenesis, peg and small maxillary lateral incisors in Nigerian orthodontic patients in Lagos, Nigeria.

STUDY DESIGN

A retrospective study.

SETTING

Orthodontic Unit, Lagos State University Teaching Hospital, Lagos, Nigeria.

METHODOLOGY

The hospital folders, dental casts and panoramic radiographs of 611 patients between December 2013 and September 2014 were reviewed. The data obtained included congenital absence, size and shape of maxillary lateral incisors.

RESULTS

Out of the 611 patients studied, agenesis of maxillary lateral incisors was found in 14(2.3%) of the patients with 12(2.0%) females being significantly higher than 2(0.3%) males. The prevalence of maxillary peg laterals was 4.6% with no gender difference, while the prevalence of maxillary small lateral incisors was 3.9% also with no gender difference. A total of 20 maxillary lateral incisors were congenitally missing, while 35 peg laterals were recorded and 30 small lateral incisors were found. Unilateral agenesis of maxillary lateral incisor was more prevalent in 8(57%) patients than bilateral agenesis found in 6(43%) with significant preference for the right side 7(50%) than 1(7%) on the left. Unilateral peg maxillary lateral incisor was more prevalent in 21(75%) than bilateral peg 7(25%) with significant preference for the left side 16(57.1%). Unilateral small maxillary lateral incisor 18(75%) was more prevalent than bilateral small lateral incisor 6(25%) with preference for the left side 10(41.7%).

CONCLUSION

We found that the prevalence rates for lateral incisor agenesis, peg and small lateral incisor among Nigerian orthodontic patients were 2.3%, 4.6% and 3.9% respectively.

摘要

背景

上颌侧切牙先天性缺失或形态异常可能会对患者造成美观和功能上的损害。然而，关于其在尼日利亚人中的患病率及表现形式的信息却很少。

目的

确定尼日利亚拉各斯正畸患者中上颌侧切牙先天性缺失、呈钉状及过小的患病率。

研究设计

一项回顾性研究。

研究地点

尼日利亚拉各斯拉各斯州立大学教学医院正畸科。

方法

回顾了2013年12月至2014年9月期间611例患者的医院病历、牙模和全景X光片。获取的数据包括上颌侧切牙的先天性缺失情况、大小和形状。

结果

在研究的611例患者中，发现14例（2.3%）患者存在上颌侧切牙先天性缺失，其中女性12例（2.0%）明显高于男性2例（0.3%）。上颌钉状侧切牙的患病率为4.6%，无性别差异，而上颌过小侧切牙的患病率为3.9%，也无性别差异。共有20颗上颌侧切牙先天性缺失，记录到35颗钉状侧切牙，发现30颗过小侧切牙。上颌侧切牙单侧先天性缺失在8例（57%）患者中比双侧先天性缺失在6例（43%）患者中更常见，且明显更倾向于右侧7例（50%）而非左侧1例（7%）。上颌单侧钉状侧切牙在21例（75%）患者中比双侧钉状侧切牙在7例（25%）患者中更常见，且明显更倾向于左侧16例（57.1%）。上颌单侧过小侧切牙18例（75%）比双侧过小侧切牙6例（25%）更常见，且倾向于左侧10例（41.7%）。