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두 가지 CAD software의 맞춤형 지대주 디자인과 출력물 일치도 비교
Comparative study of two CAD software programs on consistency between custom abutment design and the output
J Dent Rehabil Appl Sci 2018;34(3):157-166
Published online September 30, 2018
© 2018 Korean Academy of Stomatognathic Function and Occlusion.

임현미1,2, 이규복1,2*, 이완선2, 손큰바다2,3
Hyun-Mi Lim1,2, Kyu-Bok Lee1,2*, Wan-Sun Lee2, KeunBaDa Son2,3

1경북대학교 치과대학 치과보철학교실
2경북대학교 첨단치과의료기기개발연구소
3경북대학교 대학원 치의과학과

1Department of Prosthodontics, School of Dentistry, Kyungpook National University, Daegu, Republic of Korea
2Advanced Dental Device Development Institute, Kyungpook National University, Daegu, Republic of Korea
3Department of Dental Science, Graduate School, Kyungpook National University, Daegu, Republic of Korea
Kyu-Bok Lee
Professor, Department of Prosthodontics, School of Dentistry, Advanced Dental Device Development Institute (A3DI), Kyungpook National University, 2177, Dalgubeol-daero, Jung-gu, Daegu, 41940, Republic of Korea
Tel: +82-53-600-7674, Fax: +82-53-427-0778, E-mail: kblee@knu.ac.kr
Received April 3, 2018; Revised May 19, 2018; Accepted May 25, 2018.
cc This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
목적: 두 가지 CAD software에서 각 software의 맞춤형 지대주 디자인과 출력물의 일치도를 비교 평가한다.
연구 재료 및 방법: 3Shape Dental System과Delta9 CAD 소프트웨어를 이용하여 임플란트 식립 석고모델에 맞춤형 지대주를 디자인하였다(CRM STL file). 디자인한 지대주를 밀링 한 후, 접촉식 방식으로 스캔하고(Test STL file), Inspection 소프트웨어에서 각 지대주의 Test STL file과 CRM STL file을 중첩하여 오차값을 측정하였다.
결과: 시편의 전체 스캔 오차 비교와 축면 경사각에 따른 축면부위 오차비교에서 Delta9이 더 나은 밀링 재현성을 보였다(P < .05). 마진설정 시, 반경 0.9 mm에서 Delta9의 디자인과 출력물의 일치도가 더 우수했다(P < .05). 반면, Antirotation 형태 부여에 따른 유의할 만한 차이는 없었다. 부위별 오차 값 누적 비교에서는 Delta9이 대부분의 시편에서 더 작은 오차 값을 보였다(P < .05).
결론: Delta9이 대부분의 디자인 설정 환경에서 3Shape보다 더 작은 오차 값을 보였다. 이는 Delta9을 사용했을 때, 계획된 디자인과 출력물의 일치도가 3Shape과 유사하거나 더 좋은 출력물을 얻을 수 있음을 의미한다.
Purpose: This study was aimed to compare the consistency between the custom abutment design and the output in two CAD software programs.
Materials and Methods: Customized abutments were designed by using 3Shape Dental System CAD software and Delta9 CAD software on a plaster model with implants (CRM STL file). After milling of the designed abutments, the abutments were scanned with a contact method scanner (Test STL file). We overlaid the Test STL file with each CRM STL file by using inspection software, and then compared the milling reproducibility by measuring the output error of the specimens from each CAD software program.
Results: The Delta9 showed better milling reproducibility than 3Shape when comparing the milling errors obtained with a full scan of all specimens (P < .05) and also when comparing the axial wall region specifically according to the axial angle. With 0.9 mm marginal radius, the Delta9 showed better consistency between the design and the output than 3Shape (P < .05). While, anti-rotation form had no significant difference in error between the two systems. When cumulative errors were compared, the Delta9 showed better milling reproducibility in almost cases (P < .05).
Conclusion: Delta9 showed a significantly smaller error for most of the abutment design options. This means that it is possible to facilitate generation of printouts with reliable reproducibility and high precision with respect to the planned design.
주요어 : CAD 소프트웨어; 타이타늄 맞춤 지대주; 재현 정확성; 3D 평가
Keywords : CAD software; titanium custom abutment; precise reproducibility; 3D evaluation


September 2018, 34 (3)
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