比较托盘治疗对铸模精度的影响。

Comparing effects of tray treatment on the accuracy of dies.

作者信息

Tjan A H, Whang S B

出版信息

J Prosthet Dent. 1987 Aug;58(2):175-8. doi: 10.1016/0022-3913(87)90172-7.

Abstract

The effects of tray treatments on the accuracy of dies from addition silicone impressions were investigated. Tray treatments included custom acrylic resin tray with adhesive, perforated custom acrylic resin tray without adhesive, and perforated custom acrylic resin tray with adhesive. No appreciable differences were found in the complete crowns among the three tray treatments on the first pours. Significant statistical differences observed in the MOD and occlusal inlays were nonetheless of questionable clinical significance. Adhesives are advisable if the impressions are poured repeatedly, however, to minimize accidental separation of the impression from the tray. The second casts were less accurate with complete crowns and MOD inlays when perforated trays were used without adhesives.

摘要

研究了托盘处理对加成型硅橡胶印模所制铸模精度的影响。托盘处理包括带粘结剂的定制丙烯酸树脂托盘、不带粘结剂的穿孔定制丙烯酸树脂托盘以及带粘结剂的穿孔定制丙烯酸树脂托盘。首次灌注时，三种托盘处理方式下的全冠之间未发现明显差异。然而，在近中邻牙合面（MOD）和牙合面嵌体中观察到的显著统计学差异的临床意义存疑。不过，如果印模需要重复灌注，建议使用粘结剂，以尽量减少印模与托盘意外分离的情况。当使用不带粘结剂的穿孔托盘时，第二次灌注的全冠和MOD嵌体的精度较低。