대한치과기공학회지 (Journal of Technologic Dentistry)

  • 제45권4호
  • /
  • Pages.87-94
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  • 2023
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  • 1229-3954(pISSN)
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  • 2288-5218(eISSN)
대한치과기공학회 (Korean Academy of Dental Technology)
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치과용 바렐연마의 시간에 따른 가공도 및 연마도 관찰

Observation of machining and polishing according to the dental barrel polishing time

  • 고현정 (부산가톨릭대학교 치기공학과) ;
  • 최성민 (부산가톨릭대학교 치기공학과)
  • Hyeon-jeong Ko (Department of Dental Laboratory Science, Catholic University of Pusan) ;
  • Sung-min Choi (Department of Dental Laboratory Science, Catholic University of Pusan)
  • 투고 : 2023.11.10
  • 심사 : 2023.11.29
  • 발행 : 2023.12.30
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초록

Purpose: This study aimed to observed changes in the shape of dental barrels based on application time. Machinability measures the angle of alloy specimens. Polishing performance measures the surface roughness of alloy specimens. Methods: The dental barrel polishing equipment used in this study was a Snow Barrel (DK Mungyo). Three types of cobalt-chromium alloys for partial dentures were used as specimens (BC CAST R [BP]; Bukwang, Vera PDI [VP]; Aalbadent, and GM 800+ [GP]; Dentaurum). Specimens were prepared in the form of plates (10 mmx10 mmx2 mm). Dental barrel polishing was performed at 450 rpm for 60 minutes with intervals of 5 minutes. The processing angle was measured using a microscope (SZ61; Olympus). Results: For the angle measurement, the VPC specimen was measured at 78.64°, 36.00° for the VP60 specimen, 79.57° for the BP control (BPC) specimen, 28.07° for the BP60 specimen, 75.01° for the GPC specimen, and 39.92° for the GP60 specimen. For the surface roughness measurements, the average surface roughness of the VPC and VP15 specimens were 1.09 ㎛ and 0.26 ㎛, respectively. The average surface roughness of the BPC and BP20 specimens were 1.77 ㎛ and 0.29 ㎛, respectively. The average surface roughness of the GPC and GP15 specimens were 1.08 ㎛ and 0.27 ㎛. Conclusion: The results were excellent after about 20 minutes of dental barrel polishing conditions presented in this study.

키워드

과제정보

This paper was supported by RESEARCH FUND offered from Catholic University of Pusan.

참고문헌

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