Journal of Korean society of Dental Hygiene (한국치위생학회지)

Korean Society of Dental Hygiene (한국치위생학회)
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Assessment of the fit of partial frame fabricated by SLS 3D printer

국부상의치의 전해연마에 따른 SLS 3D 프린터의 적합성 평가

  • Park, Young-Dae (Department of Dental Laboratory, Daegu Health College) ;
  • Kang, Wol (Department of Dental Laboratory, Daegu Health College)
  • 박영대 (대구보건대학교 치기공과) ;
  • 강월 (대구보건대학교 치기공과)
  • Received : 2019.10.28
  • Accepted : 2019.11.18
  • Published : 2019.12.30
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Abstract

Objectives: The present study aimed to compare the accuracy of removable partial denture (RPD) frameworks fabricated by selective laser sintering (SLS) before and after electropolishing. Methods: A partially edentulous mandibular model was used as the working model. Scanning of the model was performed using a dental scanner. The framework was designed using CAD software. The metal framework was formed using an SLS 3D printer. 3D scans of the two fabricated prototypes produced before and after electropolishing were overlapped with reference data. The fit was calculated based on Root Mean Square (RMS). Fabrication accuracy was verified using the paired t-test to compare the discrepancy before and after electropolishing. Results: The mean (SD) values of RMS before and after electropolishing were 126.6 (34.19) and 75.86 (21.36), respectively. There was a statistically significant difference before and after electropolishing (p<0.05). Conclusions: Metal frameworks made with SLS 3D printers showed clinically acceptable fit after electropolishing.

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