下颌磨牙区种植体同下颌神经管间距的临床分析  

Clinical analysis of the distance between the dental implant and mandibular canal in mandibular molar area

作　　者：王国云[1] 杨煦[1] 徐天舒[1] 

机构地区：[1]江苏省常州市第一人民医院口腔科,江苏常州210000

出　　处：《口腔医学》2015年第12期1056-1059,共4页Stomatology

摘　　要：目的探讨下颌磨牙区种植体同下颌神经管之间的安全间距的范围。方法选择临床上种植体末端同下颌神经管距离小于2 mm的12例患者15颗种植体（包括软组织水平和骨水平种植体）测算出其种植体末端同下颌神经管之间的实际距离。记录种植体植入期间下牙槽神经有无阳性体征。结果 15例种植体末端距离下颌神经管上缘平均距离为（0.94±0.50）mm（0.24-1.52 mm）。12例患者中有1例患者出现短期下颌神经感觉麻木。结论在回顾分析了下牙槽神经损伤、下颌骨感染、种植体周围炎、逆行性种植体周围炎等可能出现的问题后,结合本研究实际情况,我们考虑种植体末端同下颌神经管之间的安全距离可小于2 mm。Objective To explore the range of the distance between the dental implant tip and mandibular canal. Methods 15 dental implants（ including soft tissue level and bone level implants） from 12 patients whose distance between the tip of dental implant and the superior border of mandibular canal was less than 2 mm were selected and the real distance was measured and after surgery the inferior alveolar nerve symptoms were recorded. Results The average distance between the tip of dental implant and the superior border of mandibular canal in 15 implants was（ 0. 94 ± 0. 50） mm（ 0. 24 - 1. 52 mm） and one patient experienced numbness of the chin in one week. Conclusions Considering the possible problems such as mandible infection,inferior alveolar nerve damage,peri-implantitis、Retrograde Peri-Implantitis,the safe range of distance may be less than 2 mm.

关 键 词：种植体 下颌神经管 种植体周围炎 安全间距 

分 类 号：R782.13[医药卫生—口腔医学]