Department of Oral and Maxillofacial Surgery, School of Dentistry, Faculty of Medical Sciences, The University of the West Indies, West Indies.
Department of Radiology, School of Dentistry, Faculty of Medical Sciences, The University of the West Indies, West Indies.
Niger J Clin Pract. 2024 Jul 1;27(7):837-843. doi: 10.4103/njcp.njcp_779_23. Epub 2024 Jul 27.
The aim of this retrospective study was to determine the prevalence and patterns of impacted third molars in a Trinidadian population.
A total of 1500 orthopantomograms (OPG) taken at the School of Dentistry, University of the West Indies, from 2008 to 2019 in patients between 15 and 67 years old were evaluated. From the data collected, the prevalence of third molar impaction, the parameters of gender, angulation, level of impaction, and associated pathologies were evaluated. Other types of impacted teeth were also recorded.
Of the 1500 OPG viewed, 408 (27.2%) of the study sample presented with at least one impacted third molar. 161 (39.5%) were males and 247 (60.5%) were females, with a male-to-female ratio of 1:1.5. There was a greater incidence of mandibular third molars versus maxillary third molars, which had a frequency of 77.9% and 22.1%, respectively. The most common type of impaction (Winter's classification) was horizontal in the mandible and distoangular in the maxilla. The most common level of impaction in the mandible (Pell and Gregory classification) was level 1A. The total number of impacted teeth was 775, and of these, 75 (9.7%) showed other impacted teeth besides the third molars. Canines and second premolars were the most prevalent with 7.6% and 1.5%, respectively. Caries on the second molar (49.3%) and third molars (40%) were the most frequently associated pathologies identified.
The prevalence of impacted wisdom teeth in this study was 27%. These results raise awareness and provide insight among dental professionals in Trinidad as to the prevalence of impacted third molars, their patterns, as well as commonly associated pathologies, and the need for screening within the population.
本回顾性研究旨在确定特立尼达人群中阻生第三磨牙的流行率和模式。
评估了 2008 年至 2019 年期间，西印度群岛大学牙科学院拍摄的共 1500 张口腔全景片（OPG），这些 OPG 来自年龄在 15 至 67 岁之间的患者。从收集的数据中，评估了第三磨牙阻生的流行率、性别、角度、阻生程度和相关病变等参数。还记录了其他类型的阻生牙。
在 1500 张 OPG 中，有 408 张（27.2%）研究样本中至少有一颗阻生第三磨牙。161 名（39.5%）为男性，247 名（60.5%）为女性，男女比例为 1:1.5。下颌第三磨牙比上颌第三磨牙更常见，发生率分别为 77.9%和 22.1%。最常见的阻生类型（Winter 分类）为下颌水平阻生和上颌远中阻生。下颌最常见的阻生程度（Pell 和 Gregory 分类）为 1A 级。阻生牙总数为 775 颗，其中 75 颗（9.7%）除第三磨牙外还存在其他阻生牙。尖牙和第二前磨牙最常见，发生率分别为 7.6%和 1.5%。第二磨牙（49.3%）和第三磨牙（40%）的龋齿是最常见的相关病变。
本研究中阻生智齿的流行率为 27%。这些结果提高了特立尼达牙科专业人员对阻生第三磨牙的流行率、模式以及常见相关病变的认识，并需要对该人群进行筛查。
