Accuracy of implant impression techniques.
Accuracy of implant impression techniques.
复制标题
种植体印模技术的准确性。
DOI：
10.1097/00008505-199600540-00028
复制
发表时间：
1996
期刊：
影响因子：
--
通讯作者：
A. Schmidt
中科院分区：
文献类型：
--
作者：
D. Assif;B. Marshak;A. Schmidt
在模拟临床实践的实验室模型中，对三种印模技术的准确性进行了评估。第一种技术使用自聚合丙烯酸树脂来固定转移冠。第二个涉及将转移内冠直接夹板固定到丙烯酸树脂定制托盘上。在第三种情况下，仅使用印模材料来定向转移内冠。根据主框架测量带有植入物类似物的石模的准确性。使用应变计测试框架在铸件上的配合。在印模材料中使用丙烯酸树脂夹板转移内冠的技术明显比其他两种技术更准确。在框架中观察到的应力进行了描述和讨论，并提出了改善临床和实验室技术的建议。
Three impression techniques were assessed for accuracy in a laboratory cast that simulated clinical practice. The first technique used autopolymerizing acrylic resin to splint the transfer copings. The second involved splinting of the transfer copings directly to an acrylic resin custom tray. In the third, only impression material was used to orient the transfer copings. The accuracy of stone casts with implant analogs was measured against a master framework. The fit of the framework on the casts was tested using strain gauges. The technique using acrylic resin to splint transfer copings in the impression material was significantly more accurate than the two other techniques. Stresses observed in the framework are described and discussed with suggestions to improve clinical and laboratory techniques.