Jaarda M J, Razzoog M E, Gratton D G
Department of Prosthodontics, University of Michigan, School of Dentistry, Ann Arbor, MI 48109-1078, USA.
J Prosthodont. 1995 Mar;4(1):23-7. doi: 10.1111/j.1532-849x.1995.tb00310.x.
The maximum preload torque of implant prosthetic retaining screws from four manufacturers and of two alloy types was measured to determine one index of interchangeability of intersystem components.
Implant prosthetic retaining screws from four manufacturers (3i Implant Innovations Inc, West Palm Beach, FL; Impla-Med Inc, Sunrise, FL; Nobelpharma USA Inc, Chicago, IL; and Implant Support Systems Inc, Irvine, CA) and of two metal types (gold and titanium) were investigated using an in vitro simulation model. Five screws of each type were tightened down against a gold cylinder using a Tohnichi BTG-6 torque gauge (Tohnichi American Corporation, Northbrook, IL) until fracture occurred.
The 3i Implant Innovations gold and the Nobelpharma gold were not significantly different. The 3i Implant Innovations titanium and the Impla-Med gold were able to withstand less preload torque than the 3i Implant Innovations gold and the Nobelpharma gold. The Implant Support Systems titanium was able to withstand significantly more preload torque than all of the other screws.
Interchanging implant prosthetic retaining screws could introduce new and unknown variables that may affect the long-term survival of implant fixtures and/or the implant prostheses.
测量来自四个制造商的种植修复固位螺钉以及两种合金类型的最大预紧扭矩，以确定系统间组件互换性的一个指标。
使用体外模拟模型研究来自四个制造商（3i种植创新公司，佛罗里达州西棕榈滩；Impla-Med公司，佛罗里达州日出市；美国诺贝尔制药公司，伊利诺伊州芝加哥；以及种植支持系统公司，加利福尼亚州欧文）的种植修复固位螺钉和两种金属类型（金和钛）。每种类型的五颗螺钉使用东日BTG-6扭矩计（东日美国公司，伊利诺伊州北布鲁克）拧紧在一个金圆柱体上，直到发生断裂。
3i种植创新公司的金螺钉和诺贝尔制药公司的金螺钉没有显著差异。3i种植创新公司的钛螺钉和Impla-Med公司的金螺钉能够承受的预紧扭矩比3i种植创新公司的金螺钉和诺贝尔制药公司的金螺钉小。种植支持系统公司的钛螺钉能够承受的预紧扭矩比所有其他螺钉都显著更大。
互换种植修复固位螺钉可能会引入新的和未知的变量，这些变量可能会影响种植体固定装置和/或种植修复体的长期存活。
