印模帽几何设计对种植体印模准确性的影响：一项实验研究。
The impact of impression coping geometrical design on accuracy of implant impressions: an experimental study.
作者信息
Osman Motaz, Abubakr Neamat Hassan, Suliman Ahmed, Ziada Hassan
机构信息
Department of Oral Rehabilitation, Faculty of Dentistry, University of Khartoum, Khartoum, Sudan.
Biomedical Sciences, School of Dental Medicine, University of Nevada, Las Vegas, 1001 Shadow Lane, Suite 20, Las Vegas, NV, 89106, USA.
出版信息
Int J Implant Dent. 2020 Oct 10;6(1):54. doi: 10.1186/s40729-020-00256-0.
AIM
This in vitro study aimed to evaluate the effect of implant impression coping geometrical designs on the accuracy of open and closed impression techniques and in the parallel and nonparallel implant positions.
MATERIAL AND METHODS
Three custom-made acrylic resin models of three tested implant systems (Straumann®, SIC Invent®, and Osstem®) with diverse coping geometrical designs were evaluated in simulated cases of two parallel and two nonparallel implants. The horizontal and vertical discrepancies were measured and analyzed.
RESULTS
No statistically significant differences between the two impression techniques in either parallel or nonparallel implants were observed. The high retentive design of the Osstem system showed a statistically significant difference.
CONCLUSION
The geometrical design of the impression copings did not affect the accuracy for either the open and closed tray techniques. However, the high retentive coping design of the Osstem implant affected the accuracy in the open tray technique.
目的
本体外研究旨在评估种植体印模帽的几何设计对开放和封闭印模技术在平行和非平行种植体位置时准确性的影响。
材料与方法
在两个平行和两个非平行种植体的模拟病例中，对三种测试种植系统（士卓曼®、SIC Invent®和奥齿泰®）具有不同帽几何设计的三个定制丙烯酸树脂模型进行了评估。测量并分析了水平和垂直差异。
结果
在平行或非平行种植体中，两种印模技术之间均未观察到统计学上的显著差异。奥齿泰系统的高固位设计显示出统计学上的显著差异。
结论
印模帽的几何设计对开放和封闭托盘技术的准确性均无影响。然而，奥齿泰种植体的高固位帽设计影响了开放托盘技术的准确性。
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