种植体挤压致骨折片突入下牙槽神经管内后无不适1例

A case report about bone fragment broke into the inferior alveolar nerve canal by implant extrusion without discomfort

牙种植体或骨折片进入下牙槽神经管往往会导致患者出现暂时或长期的下唇麻木、疼痛不适等症状,最终需拔除种植体。本文所报道的病例为种植体挤压骨折片突入下牙槽神经管,术后患者均未出现异常疼痛及麻木感;术后3个月锥形束CT显示突入的骨折片已改建吸收,种植体获得较好的骨结合,术后3.5个月完成修复负重,随访2年,患者未诉不适。适当地减少植入种植体的长度及正确的操作可大大降低这一风险的发生。

Temporarily or long-term lower lip numbness, pain, discomfort and other symptoms are often caused by dental implants and bone fragments into the inferior alveolar neural canal, and it has to remove the implant ultimately. This paper reported a case that implant extruded bone fragment into the inferior alveolar nerve tube, and the patient was not fell abnormal pain and numbness after surgery. 3 months later, the cone beam computed tomography-checking showed that the bone fragment was absorbed and the implant gained good osseointegration. Implant-suported restoration was finished after 3.5 months, 2-years follow-up, the patient felt good. To reduce the length of the implant appropriatly and the correct operation can greatly reduce this risk.