대한치과기공학회지 (Journal of Technologic Dentistry)

  • 제42권3호
  • /
  • Pages.228-233
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  • 2020
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  • 1229-3954(pISSN)
  • /
  • 2288-5218(eISSN)
대한치과기공학회 (Korean Academy of Dental Technology)
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치과용 CAD/CAM 전용 세라믹기반 하이브리드 레진 수복물의 변연 적합 연구

A study on marginal fit of the ceramic-based hybrid resin restoration for dental CAD/CAM systems

  • Jeong, Chang-Seop (Department of Dental Laboratory Technology, Wonkwang Health Science University) ;
  • Park, Jong-Kyoung (Department of Dental Technology, College of Health Care, Gimcheon University)
  • 투고 : 2020.07.31
  • 심사 : 2020.08.14
  • 발행 : 2020.09.30
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초록

Purpose: This study aimed to assess and compare the marginal fit of ceramic-based hybrid resin restoration (HYB) and zirconia restoration (ZIR) for dental computer-aided design/computer-aided manufacturing systems. Methods: A stainless steel master model was produced. The impression was first made with silicone, and then stone working models were produced. A total of twenty restorations were fabricated with two different materials: ZIR and HYB. The silicone film thickness of the marginal gap was measured using a digital microscope; digital photos were taken at a magnification of ×160, and then analyzed using a measurement software. The values of the result were evaluated with the independent-sample t-test (α=0.05). All statistical analyses were performed with a statistical software. Results: The mean values for the marginal gap was 37.14±2.96 ㎛ for HYB, compared with 40.37±5.26 ㎛ for ZIR. No significant difference was found between ZIR and HYB (p=0.107). Conclusion: As a result, the marginal fit of the restoration fabricated using the hybrid resin was better than that of the restoration fabricated using zirconia. Also, the marginal fit of all groups was below the clinical acceptable range of 120 ㎛. Thus, HYB for dental CAD/CAM system in this study is expected to be suitable for clinical use in dentistry.

키워드

참고문헌

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