摘要
目的:通过术前下颌阻生第三磨牙曲面断层片检查,结合拔牙术中所见,探讨牙齿根尖和下颌管之间X线关系与下牙槽神经损伤风险的相关因素。方法:收集129例术前行曲面断层片检查的下颌阻生第三磨牙拔除术患者,通过曲面断层片分析牙根与下颌管的关系及术中下牙槽神经的暴露及损伤情况。术后6个月定期进行临床检查,评估患者下唇及颏部的感觉是否异常。结果:曲面断层片显示根尖或根管透射影像和根管与下颌管重叠影像的患者中,12例术中出现下颌管暴露,其中有3例术后出现暂时性感觉迟钝,需要药物治疗。结论:下颌阻生第三磨牙拨牙术前曲面断层片显示根尖或根管透射影像和根管与下颌管重叠影像,提示下牙槽神经损伤的高风险。术前仔细分析患者的曲面断层片非常重要。
Objective To evaluate the intraoperative findings and the radiographic signs of patients with impacted mandibular third molars at risk of inferior alveolar nerve injury. Methods One hundred and twenty.nine cases with impacted mandibular third molars were selected by pantomogram. Radiographic signs of possible close relationship between the roots and canal, intraoperative exposition and damage of the inferior alveolar nerve were analysed. The clinical examinations and assessment for the sensation of the lower lip and chin were followed-up during 6 months. Results Intraoperative neural exposition was observed in 12 patients of those who have the signs of radiolucent apex or root and superimposition.3 patients complained of postoperative temporary hypoesthesia then healed by drugs. Conclusion At panoramic radiograph, the presence of signs of radiolucent apex or root,superimposition should be considered at high risk for the inferior alveolar neurovascular bundle damage.It is important to analyse the adiographic signs of patients with impacted mandibular third molars before extraction.
出处
《中国美容医学》
CAS
2012年第11期2019-2021,共3页
Chinese Journal of Aesthetic Medicine
关键词
下颌阻生第三磨牙
曲面断层片
下牙槽神经
impacted mandibular third molars
pantomogram
inferior alveolar nerve
