Demyati Abrar K
Department of Oral & Maxillofacial Surgery, Faculty of Dental Medicine, Umm Al-Qura University, Al-Abidyah, Makkah, Saudi Arabia.
Saudi Dent J. 2024 Dec;36(12):1544-1548. doi: 10.1016/j.sdentj.2024.10.005. Epub 2024 Oct 30.
Impacted third molars can cause significant challenges for dental health. While many of these impacted teeth remain asymptomatic, they can lead to dental caries.
To investigate the patterns of mandibular third molar impaction and its relationship with the occurrence of caries in the adjacent mandibular second molars.
This study assessed the dental panoramic radiographs of 1591 participants who visited the Department of Oral and Maxillofacial Surgery at the Dental Teaching Hospital at Umm Al-Qura University between 2022 and 2024. The presence of distal caries in the adjacent mandibular second molars was assessed and compared across the different impaction patterns, considering both age and gender.
The results showed that 29.22 % of the patients had impacted mandibular third molars. The most common patterns of impacted mandibular third molar angulation were mesioangular in the females and horizontal in the males. The majority of these impacted third molars were level A and class I (as per the Pell and Gregory classification).One hundred and eighty-three (39.35 %) of the impacted mandibular third molars had associated carious lesions, with 89 showing distal caries in the adjacent mandibular second molar and 18 showing caries in the third molar itself. The carious lesions were most commonly found in cases of mesioangular, level A, and class I impaction patterns (p < 0.05).
The findings of this study shed light to the high prevalence of carious lesions associated with impacted mandibular third molar, especially in cases of mesioangular, level A, and class I impaction patterns. These findings highlight the importance of careful monitoring of impacted third molars to prevent the development of caries in the adjacent teeth.
阻生第三磨牙会给口腔健康带来重大挑战。虽然许多此类阻生牙没有症状，但它们可能导致龋齿。
研究下颌第三磨牙阻生模式及其与相邻下颌第二磨牙龋齿发生的关系。
本研究评估了2022年至2024年间在乌姆古拉大学牙科学院口腔颌面外科就诊的1591名参与者的牙科全景X线片。评估并比较了不同阻生模式下相邻下颌第二磨牙远中龋齿的情况，同时考虑了年龄和性别因素。
结果显示，29.22%的患者有下颌第三磨牙阻生。女性中最常见的下颌第三磨牙阻生角度模式是近中倾斜，男性中是水平阻生。这些阻生第三磨牙大多数为A类和I类（根据佩尔和格雷戈里分类法）。183颗（39.35%）下颌阻生第三磨牙伴有龋损，其中89颗相邻下颌第二磨牙有远中龋，18颗第三磨牙本身有龋。龋损最常见于近中倾斜、A类和I类阻生模式的病例中（p<0.05）。
本研究结果揭示了与下颌阻生第三磨牙相关的龋损高发情况，特别是在近中倾斜、A类和I类阻生模式的病例中。这些发现凸显了仔细监测阻生第三磨牙以预防相邻牙齿龋病发生的重要性。
