가변형 치과 인상용 트레이로 제작된 모형의 재현성에 관한 연구
Accuracy of stone cast produced by adjustable dental impression tray
엄상호, 오상천,
소속 상세정보
엄상호 ( Eom Sang-Ho ) - 원광대학교 치과대학 치과보철학교실
오상천 ( Oh Sang-Chun ) - 원광대학교 치과대학 치과보철학교실
KMID : 0362420050430040453
Abstract
Purpose: This study was performed to measure the accuracy of adjustable dental impression trays by a scanning laser three-dimensional digitizer.
Materials & Methods: The metal stock, individual, and adjustable stock trays were used for 60 stone casts(10 casts each) duplicated a resin master model of mandible and maxilla. The type IV dental stone was poured in a vinyl polysiloxane impressions and allowed to set for one hour. The master model and the duplicated casts were digitized using an optical digitizer. The distance between the reference points were measured and analyzed on the graphic image of 3-D graphic software(CATIA version 5.0). The statistical significance of the differences between the groups was determined by a two-way ANOVA.
Results: There were no significant differences between the accuracies of the adjustable stock tray and the master model except only anterior arch width on the upper arch and the diagonal arch length and arch length on one side of the lower arch.
Conclusion: The adjustable stock trays showed clinically acceptable accuracies of the study cast produced by them.
키워드
tray;impression;Accuracy;Digitizer;adjustable;cast
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