Journal of Dental Rehabilitation and Applied Science (구강회복응용과학지)

Korean Academy of Stomatognathic Function and Occlusion (대한턱관절교합학회)
권호 표지

Accuracy of Stone Cast Produced by Adjustable Dental Impression Tray

가변형 치과 인상용 트레이로 제작된 모형의 재현성

  • Park, Kwang-Su (Department of Prosthodontics, College of Dentistry, Wonkwang University) ;
  • Dong, Jin-Keun (Department of Prosthodontics, College of Dentistry, Wonkwang University) ;
  • Sim, Hun-Bo (Department of Prosthodontics, College of Dentistry, Wonkwang University) ;
  • Oh, Sang-Chun (Department of Prosthodontics, College of Dentistry, Wonkwang University)
  • 박광수 (원광대학교 치과대학 보철학교실) ;
  • 동진근 (원광대학교 치과대학 보철학교실) ;
  • 심헌보 (원광대학교 치과대학 보철학교실) ;
  • 오상천 (원광대학교 치과대학 보철학교실)
  • Published : 2006.12.30
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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: Metal stock tray and adjustable stock trays were used for 40 stone casts(10 casts each) duplicated a resin master model of mandible and maxilla. The type IV dental stone was poured in a allginate impressions and allowed to set for one hour. The 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 anterior arch width of the upper arch and the diagonal arch length and arch length(one side) of the lower arch. Conclusion: The adjustable stock trays showed clinically acceptable accuracies of the study casts produced by them.

Keywords

Acknowledgement

Supported by : 원광대학교

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