Department of Restorative Dentistry and Biomaterials Sciences, Harvard School of Dental Medicine, Boston, MA, USA.
Int J Prosthodont. 2011 Sep-Oct;24(5):469-72.
The aim of this research was to compare the accuracy outcomes of open- and closed-tray implant impressions for partially edentulous patients. Eleven partially edentulous spaces in seven patients with two existing implants for fixed partial dentures were included. Group I (closed-tray) and group II (open-tray) were compared using microcomputed tomography scanning. No statistically significant differences were found between the closed- and open-tray techniques (P = .317). The subjective evaluation of patient comfort showed no differences with either impression technique. There were no differences seen between open- and closed-tray impression techniques in partially edentulous patients when implants had less than 10 degrees of angulation.
本研究旨在比较部分牙列缺失患者采用开口托盘和闭口托盘取模的准确性。本研究纳入了 7 名患者的 11 个部分牙列缺失区，这些患者均有 2 个用于固定局部义齿的现有种植体。采用微计算机断层扫描对第 I 组（闭口托盘）和第 II 组（开口托盘）进行比较。闭口托盘技术和开口托盘技术之间没有统计学差异（P=.317）。两种印模技术的患者舒适度的主观评价没有差异。当种植体的角度小于 10 度时，在部分牙列缺失患者中，开口托盘和闭口托盘取模技术之间没有差异。
