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一、适应症:急慢性牙髓炎,急慢性根尖周炎、牙髓坏疽,基牙无明显松动,固定义齿固位良好者。二、治疗方法: 1.选用高速涡轮机牙钻或柱状长柄砂石,于(牙合)面中央(或舌侧窝),按Ⅰ类洞型的制作要求磨开金属冠,磨开的金属冠洞缘与牙体预备洞型的洞缘一致或略小。2.选用高速涡轮机牙钻常规开髓、失活。3.按根管治疗、干髓术或牙髓塑化治疗常规的处理洞型。4.常规消毒、待符合根管充填或牙髓塑化指征后,最后,用银汞合金做永久性充填。三、材料及观察病例为90例,其中后牙为64例,前牙为26例;年龄17～55岁,观察时间1～7年。成功:无主观症状、无牙折。失败:具有任何一项主观症状,基牙冠折金属冠脱落。四、治疗效果:本组病例经术后1～7年的观察效果为:成功76例占84％,失败14例占16％。
First, the indications: acute and chronic pulpitis, acute and chronic apical periodontitis, pulp gangrene, abutment no obvious loosening, fixed denture retention well. Second, the treatment: 1 selection of high-speed turbine drill or columnar long sand gravel, (occlusal) in the center (or lingual fossa), according to the production requirements of type I hole grind open the metal crown, grinding metal The crown edge is the same as or slightly smaller than the hole edge of the tooth preparation hole. 2. Selection of high-speed turbine dental drill open pulp, inactivated. 3. According to the root canal treatment, dry pulp or pulp plasticization treatment of conventional processing hole. 4. routine disinfection, to be consistent with root canal filling or pulp plasticizing indications, and finally, with amalgam permanent filling. Third, the material and observation of 90 cases, of which 64 cases of posterior teeth, anterior teeth was 26 cases; aged 17 to 55 years old, the observation time of 1 to 7 years. Success: no subjective symptoms, no tooth fold. Failure: Any one of the subjective symptoms of coronal crown off the metal crown. Fourth, the treatment effect: This group of patients after 1 to 7 years of observation results: successful 76 cases accounted for 84%, failed 14 cases accounted for 16%.