대한치과기공학회지 (Journal of Technologic Dentistry)

  • 제43권1호
  • /
  • Pages.13-18
  • /
  • 2021
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  • 1229-3954(pISSN)
  • /
  • 2288-5218(eISSN)
대한치과기공학회 (Korean Academy of Dental Technology)
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광경화성 3D 프린팅 레진의 출력각도에 따른 굽힘 특성과 신뢰성 평가

Evaluation of flexural properties and reliability with photo-curing 3D printing resin according to the printing orientations

  • Im, Yong-Woon (Department of Dental Technology, Kyungdong University) ;
  • Song, Doo-Bin (Department of Dental Lab Technology, Daejeon Health Institute of Technology) ;
  • Hwang, Seong-Sig (Department of Dental Technology, Kyungdong University) ;
  • Kim, Sa-Hak (Department of Dental Technology, Kyungdong University) ;
  • Han, Man-So (Department of Dental Lab Technology, Daejeon Health Institute of Technology)
  • 투고 : 2021.03.03
  • 심사 : 2021.03.22
  • 발행 : 2021.03.30
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초록

Purpose: This study aimed to compare the flexural properties and perform the Weibull analysis of photo-curing three-dimensional (3D) printing resin. Methods: Photo-curing temporary resin (3D polymer) was used as a printing resin. Specimens (65 × 10 × 3.3 ㎣) were prepared following the ISO 20975-1 guidelines and according to the different printing orientations using a digital light processing 3D printer (D2 120; Dentium). The flexural strength (FS), flexural modulus, and work of fracture (WOF) were measured using a universal testing machine (Instron 3344; Instron) at a crosshead speed of 5 mm/min. Results: In this study, the 0° orientation exhibited higher FS and WOF than the 45° orientation. Significant differences were found among the printing orientations (p<0.05). Specimens printed at the 0° orientation were the most accurate. In the Weibull analysis, 0° showed the greatest Weibull modulus (m), which represents a higher reliability. Conclusion: 3D printing should be selected and used by considering flexural properties, size accuracy, and reliability.

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참고문헌

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