Evian C I, Cutler S A
University of Pennsylvania, Philadelphia, USA.
Int J Oral Maxillofac Implants. 1995 Nov-Dec;10(6):736-43.
Failure to osseointegrate traditionally mandates immediate implant removal, followed by a 1-year healing period before placing a second implant into the same area. This report presents five cases in which failed screw-type, commercially pure titanium implants were immediately replaced by ledge-type, hydroxyapatite-coated, Ti-6Al-4V implants in the same sockets. These cases suggest that the 1-year healing period may not be necessary, provided that (1) the socket can be reprepared to eliminate thread grooves and invasive soft tissue, (2) the replacement implant is larger in diameter than the original implant, and (3) sufficient available bone remains for the procedures.
传统上，种植体未能实现骨结合就必须立即取出，然后在同一区域植入第二枚种植体之前要有1年的愈合期。本报告介绍了5例病例，其中，在同一牙槽窝中，失败的纯商业钛螺纹种植体被羟基磷灰石涂层的Ti-6Al-4V凸缘型种植体立即替换。这些病例表明，如果满足以下条件，1年的愈合期可能并非必要：（1）可以重新准备牙槽窝以消除螺纹凹槽和侵入性软组织；（2）替换种植体的直径大于原始种植体；（3）有足够的可用骨用于手术。
