Cosci F, Cosci B
Compend Contin Educ Dent. 1997 Sep;18(9):940-2, 944, 946 passim.
This article reports the results of a study conducted from 1989 to 1995 of 423 hydroxyapatite-coated implants used for immediate tooth replacement after extraction in 353 patients with an age range from 15 to 68 years. The implants replaced teeth that were extracted because of periodontal disease, root fractures, and endodontic problems. Bone defects relative to the implant were treated with bone regeneration procedures using polytetrafluoroethylene (PTFE) membranes and resorbable collagen membranes with and without augmentation material (hydroxyapatite--188 cases, demineralized freeze-dried bone allograft--208 cases, and 27 cases without augmentation material). Histologic evaluation confirmed viability of the regenerated bone. The length of implants ranged from 8 mm to 18 mm, and a total of 284 PTFE and 139 collagen membranes were used. During the 1-year follow-up, 1 implant was lost and an additional implant failed during the 7-year follow-up, with a final success rate of 99.53%.
本文报告了一项于1989年至1995年开展的研究结果，该研究涉及353例年龄在15至68岁之间的患者，他们共使用了423颗羟基磷灰石涂层种植体进行拔牙后即刻牙齿修复。这些种植体替代的是因牙周病、牙根折断和牙髓问题而拔除的牙齿。针对种植体相关的骨缺损，采用聚四氟乙烯（PTFE）膜和可吸收胶原膜并搭配或不搭配增强材料（羟基磷灰石——188例，脱矿冻干骨同种异体移植——208例，27例未使用增强材料）进行骨再生程序治疗。组织学评估证实了再生骨的活力。种植体长度从8毫米到18毫米不等，共使用了284片PTFE膜和139片胶原膜。在1年的随访期内，有1颗种植体脱落，另有1颗种植体在7年随访期内失败，最终成功率为99.53%。
