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Evaluation of validity of polyurethane model fabricated by intra-oral scanning method

구강 내 스캐닝 방법에 의해 제작된 폴리우레탄 모형의 정확도 평가

  • Kim, Won-Tae (Department of Dental Laboratory Technology, Daejeon Health College) ;
  • Lee, Byung-Ki (Department of Dental Laboratory Technology, Daejeon Health College) ;
  • Hyun, Joung-Ku (Department of Dental Laboratory Technology, Daejeon Health College) ;
  • Kim, Ki-Baek (Department of Dental Laboratory Technology, Daejeon Health College)
  • 김원태 (대전보건대학교 치기공과) ;
  • 이병기 (대전보건대학교 치기공과) ;
  • 현종구 (대전보건대학교 치기공과) ;
  • 김기백 (대전보건대학교 치기공과)
  • Received : 2014.05.02
  • Accepted : 2014.06.21
  • Published : 2014.06.30

Abstract

Purpose: The purpose of this study was evaluate the validity of polyurethane model fabricated by intra oral scanning method. Methods: Ten sam cases of stone models were manufactured from master model, and polyurethane models were made with the intra oral scanning and CNC milling method. One examiner individually measured 6 distances(intercanine distance, intermolar distance, two dental arch lengths(right, left) and two diagonal of dental arch lengths(right, left) on the stone models and the polyurethane models. The Mann-Whitney U test(${\alpha}$=0.05) were used for statistical analysis. Results: The mean difference between measurements made directly on the stone models and those made on the polyurethane models was 0.31-0.38mm. No statistically differences between the two groups were founded 4 distances(p>0.05), but 2 distances were statistically significant(p<0.05). Conclusion: Stone models showed larger than polyurethane models fabricated by intra oral scanning method.

Keywords

Dental CAD-CAM;Dental model;Digital dentistry;Intra oral scanning

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