Vilnius University, Vilnius, Lithuania.
Int J Prosthodont. 2012 Sep-Oct;25(5):512-5.
The aim of this preliminary laboratory study was to evaluate the effects of 5- and 25-degree implant angulations in simulated clinical casts on an impression's accuracy when using different impression materials and tray selections. A convenience sample of each implant angulation group was selected for both open and closed trays in combination with one polyether and two polyvinyl siloxane impression materials. The influence of material and technique appeared to be significant for both 5- and 25-degree angulations (P < .05), and increased angulation tended to decrease impression accuracy. The open-tray technique was more accurate with highly nonaxially oriented implants for the small sample size investigated.
本初步实验室研究旨在评估在使用不同印模材料和托盘选择时，模拟临床模型中 5 度和 25 度种植体角度对印模准确性的影响。每个种植体角度组均选择了方便样本，用于开放式和封闭式托盘，结合了一种聚醚和两种聚硅氧烷印模材料。对于 5 度和 25 度的角度，材料和技术的影响似乎都很显著（P<.05），并且随着角度的增加，印模的准确性往往会降低。对于研究的小样本量，开放式托盘技术在高度非轴向定向种植体中更准确。
