Journal of Dental Rehabilitation and Applied Science (구강회복응용과학지)

Korean Academy of Stomatognathic Function and Occlusion (대한턱관절교합학회)
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Effect of milling and sintering process on integrity of zirconia prosthesis: a literature review

밀링과 소결과정이 지르코니아 보철물의 완성도에 미치는 영향에 관한 문헌고찰

  • Lee, Kiun (Department of Prosthodontics and Research Institute of Oral Science, College of Dentistry, Gangneung-Wonju National University) ;
  • Ko, Kyung-Ho (Department of Prosthodontics and Research Institute of Oral Science, College of Dentistry, Gangneung-Wonju National University) ;
  • Huh, Yoon-Hyuk (Department of Prosthodontics and Research Institute of Oral Science, College of Dentistry, Gangneung-Wonju National University) ;
  • Park, Chan-Jin (Department of Prosthodontics and Research Institute of Oral Science, College of Dentistry, Gangneung-Wonju National University) ;
  • Cho, Lee-Ra (Department of Prosthodontics and Research Institute of Oral Science, College of Dentistry, Gangneung-Wonju National University)
  • 이기운 (강릉원주대학교 치과대학 보철학교실 및 구강과학연구소) ;
  • 고경호 (강릉원주대학교 치과대학 보철학교실 및 구강과학연구소) ;
  • 허윤혁 (강릉원주대학교 치과대학 보철학교실 및 구강과학연구소) ;
  • 박찬진 (강릉원주대학교 치과대학 보철학교실 및 구강과학연구소) ;
  • 조리라 (강릉원주대학교 치과대학 보철학교실 및 구강과학연구소)
  • Received : 2022.07.05
  • Accepted : 2022.08.27
  • Published : 2022.09.30
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Abstract

Zirconia is fabricated through various processes. Each element in fabricating process can affect the physical properties of the definitive prosthesis. In particular, both the milling process and the sintering process can affect the final integrity of the zirconia prosthesis. Most of the milling machines adopt the ultra-precision 5-axis machining method, and the results vary depending on which milling method was used and how the milling equipment was managed. Milling blocks are selected according to cutting efficiency and aesthetic reproducibility. The sintering method can affect the grain growth and optical properties, and an accurate evaluation can be made only with additional research on the recent speed sintering procedure. Not only the sintering temperature but also the temperature holding time can affect the quality of definitive prosthesis.

지르코니아는 다양한 공정과정을 거쳐서 제작되며, 각각의 요소는 최종 보철물의 물성에 영향을 줄 수 있다. 특히 밀링과정과 소결과정이 모두 지르코니아 보철물의 최종 완성도(integrity)에 영향을 미칠 수 있다. 밀링머신은 대부분 초정밀 5축 가공방식을 채택하고 있으며 어떤 방식을 사용하고 밀링기구를 어떻게 관리하는가에 따라서도 결과가 달라진다. 밀링블록은 절삭의 효율성과 심미재현성에 따라 선택하는데 물성의 변화를 야기할 수 있음은 주의해야 한다. 소결방식은 입자성장과 광학적 특성에 영향을 미칠 수 있는데 속도를 조절하는 최근의 방식에 대해서는 추가적인 연구가 동반되어야 정확한 평가가 이루어질 수 있다. 소결온도 뿐 아니라 온도 유지시간도 최종결과물에 영향을 줄 수 있다.

Keywords

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