Rieder C E
Advanced Prosthodontic Education, University of Southern California, Los Angeles, USA.
Int J Periodontics Restorative Dent. 1996 Feb;16(1):20-9.
Fixed restorations for patients with implant-supported abutments frequently produce an unsatisfactory mechanical, biologic, or esthetic compromise. Pure titanium transmucosal abutments have biologic advantages, and factory-milled abutments for the comparable implant interface have mechanical advantages. The ultimate restorative objective is to satisfy the patient's desire for an esthetic restoration. This can generally be accomplished with precisely positioned implants; however, compromised locations need to be corrected with modified abutments. The use of customized copings fabricated by casting to pure titanium abutments can satisfy all three criteria, and may in some situations be the restorative procedure of choice. The clinical and laboratory procedures involved in achieving these criteria are described in detail.
用于种植体支持基台患者的固定修复体常常会在机械、生物或美学方面产生不尽人意的折衷效果。纯钛穿龈基台具有生物学优势，而针对可比种植体界面的工厂铣削基台具有机械优势。最终的修复目标是满足患者对美学修复的需求。这通常可通过精确植入种植体来实现；然而，位置不佳的情况需要使用改良基台进行矫正。通过铸造纯钛基台制作定制化 coping 可以满足所有这三个标准，并且在某些情况下可能是首选的修复方法。详细描述了实现这些标准所涉及的临床和实验室操作步骤。
