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가변형 치과 인상용 트레이로 제작된 모형의 재현성에 관한 연구

ACCURACY OF STONE CAST PRODUCED BY ADJUSTABLE DENTAL IMPRESSION TRAY

오상천|엄상호
대한치과보철학회 (The Korean Academy Of Prosthodontics)|2005.08|대한치과보철학회지 (The Journal of Korean Academy of Prosthodontics)|제43권 제4호|pp. 453-465

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참고문헌

주제분류치의학

초록

Abstract

Purpose: This study was performed to measure the accuracy of adjustable dental impression trays by a scanning laser three-dimensional digitizer. Materials and 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.

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