Khawaja Naveed Ahmad, Khalil Hesham, Parveen Kauser, Al-Mutiri Abdulmajeed, Al-Mutiri Saif, Al-Saawi Abdullah
Faculty, Department of Oral & Maxillofacial Surgery, College of Dentistry, King Saud University, Riyadh, Kingdom of Saudi Arabia.
Associate Professor, Department of Oral & Maxillofacial Surgery, College of Dentistry, King Saud University, Riyadh, Kingdom of Saudi Arabia.
J Int Oral Health. 2015 Apr;7(4):13-7.
The purpose of this study is to determine the type and frequency of pathological conditions around third molar teeth among randomly selected patient's records in Oral and Maxillofacial Surgery, College of Dentistry, King Saud University, Riyadh.
Totally, 281 patient panoramic radiographs were selected with detectable pathology among 570 files of patients seen in oral and maxillofacial surgery clinics 2 years retrospectively. Almost 17-55 years age (mean age 25.43) was selected. The following radiographs were analyzed for all pathology associated impacted teeth; dental caries, bone resorption, periodontitis, and apical pathology.
The study found caries, external bone resorption and periodontitis are highly frequent to mesioangular and horizontal in mandibular impacted third molar compared to maxillary impacted third molar. Overall result evaluated that tooth #28 related periodontitis is significant (P = 0.021), and tooth #38 related bone resorption, tooth #48 related root caries, bone resorption and apical pathology are highly significant (P = 0.000) comparing to others. This study also concluded the high frequency of root caries, bone resorption and apical pathology reported in relation to mandibular impacted third teeth. Significant results were also achieved with periodontitis in relation to mesiangular and vertical angulation of left impacted maxillary third molars.
Prophylactic removal of impacted third molars is recommended in many studies to avoid future risk of associated pathology. Retained asymptomatic impacted third molars imply pathology that could be difficult in later ages as less morbidity in younger ages.
本研究的目的是确定在利雅得国王沙特大学牙科学院口腔颌面外科随机选取的患者记录中，第三磨牙周围病理状况的类型和频率。
回顾性分析口腔颌面外科诊所2年内570例患者档案，从中选取281例有可检测到病理状况的患者全景X线片。选取年龄在17 - 55岁（平均年龄25.43岁）的患者。对所有与阻生牙相关的病理状况的以下X线片进行分析：龋齿、骨质吸收、牙周炎和根尖病变。
研究发现，与上颌阻生第三磨牙相比，下颌阻生第三磨牙近中倾斜和水平阻生时，龋齿、外部骨质吸收和牙周炎更为常见。总体结果评估显示，与其他牙齿相比，28号牙相关的牙周炎具有显著性（P = 0.021），38号牙相关的骨质吸收、48号牙相关的根龋、骨质吸收和根尖病变具有高度显著性（P = 0.000）。本研究还得出结论，下颌阻生第三磨牙的根龋、骨质吸收和根尖病变发生率较高。左上颌阻生第三磨牙近中倾斜和垂直倾斜相关的牙周炎也取得了显著结果。
许多研究建议预防性拔除阻生第三磨牙，以避免未来相关病理状况的风险。保留无症状的阻生第三磨牙意味着存在后期可能出现问题的病理状况，因为年轻时发病率较低。
