Evaluation of marginal and internal gap of wax coping fabricated by CAD/CAM system using intraoral scanner

Kim, Dong-Yeon; Jung, Il-Do; Lee, Jae-Jun; Kim, Ji-Hwan; Kim, Myung-Bae; Kim, Woong-Chul

Evaluation of marginal and internal gap of wax coping fabricated by CAD/CAM system using intraoral scanner

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구강 내 스캐너를 사용하여 CAD/CAM으로 제작된 왁스 코핑의 적합도 평가

Type: Academic journal

Author: Kim, Dong-Yeon (고려대학교 대학원 보건과학과 치의기공전공) Jung, Il-Do (고려대학교 대학원 보건과학과 치의기공전공) Lee, Jae-Jun (고려대학교 대학원 보건과학과 치의기공전공) Kim, Ji-Hwan (고려대학교 대학원 보건과학과 치의기공전공) Kim, Myung-Bae (대한 치과CAD/CAM기공 학회) Kim, Woong-Chul (고려대학교 대학원 보건과학과 치의기공전공)

Journal: The Korean Academy of Dental Technology 대한치과기공학회지 대한치과기공학회지 제37권 제1호

Published: 2015.1

Pages: 1 - 7 (7page)

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Evaluation of marginal and internal gap of wax coping fabricated by CAD/CAM system using intraoral scanner

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Purpose: The aim of this study was to evaluate the marginal and internal gap of wax copings fabricated from extraoral scanning with intraoral scanning. Methods: Fifteen study models(abutment of teeth 16) were made by PMMA. STL files of thirty abutment were prepared by intraoral scanning with extraoral scanning. Wax copings of thirty fabricated using CAD/CAM system. Marginal and internal gap of wax copings of thirty were measured by silicone replica technique and digital microscope(${\times}140$). Date were analyzed by using independent samples t-test. Results: Mean (SD) of two group were measured $55.61(27.42){\mu}m$ for totally gap of ES group and $60.67(33.14){\mu}m$ for totally gap of IS group. But marginal and internal gap of two group were not differences statistically significant(p>0.05). Conclusion: Evaluation of marginal and internal gap of two group showed that no differences statistically significant and clinically acceptable results.

#marginal and internal gap #CEREC AC Omnicam #intraoral scanning #extraoral scannering #CAD/CAM system #wax coping

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Al-Bakri I / 2006 / The dimensional accuracy of four impression techniques with the use of addition silicone impression materials / J Clin Dent 18(2):29~33

Birnbaum N / 2009 / 3D digital scanners: a high-tech approach to more accurate dental impressions / Inside dent 5(4)

Brandestini M / 1989 / Method and apparatus for the three-dimensional registration and display of prepared teeth / Google Patents

Christensen GJ / 2008 / The challenge to conventional impressions / J Am Dent Assoc 139(3):347

Christensen GJ / 2008 / Will digital impressions eliminate the current problems with conventional impressions / J Am Dent Assoc 139(6):761~763

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