Begoña Ormaechea M, Millstein P, Hirayama H
Department of Restorative Dentistry, Tufts University, School of Dental Medicine, Boston, Massachusetts, USA.
Int J Oral Maxillofac Implants. 1999 Jan-Feb;14(1):77-85.
The purpose of this study was to determine the maximum permissible x-ray tube angulation that can be used to verify the fit of an abutment. An implant and an abutment were assembled with an abutment screw. A variety of openings were created between the abutment and the implant. Radiographs were taken combining the different gaps with various x-ray tube angulations. The radiographs were randomly presented to 8 clinicians, who judged the interface as open or closed. The results indicate that a radiographic analysis of interface openings becomes subjective with tube angulations of more than 5 degrees.
本研究的目的是确定可用于验证基台适配性的最大允许X射线管角度。将种植体和基台用基台螺钉组装在一起。在基台和种植体之间制造出各种间隙。结合不同的间隙和各种X射线管角度拍摄X光片。这些X光片被随机呈现给8位临床医生，他们判断界面是开放还是封闭。结果表明，当管角度超过5度时，对界面开口的影像学分析会变得主观。
