The Journal of Korean Academy of Prosthodontics (대한치과보철학회지)

The Korean Academy of Prosthodonitics (대한치과보철학회)
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Effect of surface treatment on shear bond strength between artificial resin teeth and 3D printing denture base resin

인공치의 표면처리가 3D 프린팅 의치상레진과의 전단결합강도에 미치는 영향

  • Choi, Jeehye (Department of Prosthodontics, School of Dentistry, Kyung Hee University) ;
  • Lee, Younghoo (Department of Prosthodontics, School of Dentistry, Kyung Hee University) ;
  • Hong, Seoung-jin (Department of Prosthodontics, School of Dentistry, Kyung Hee University) ;
  • Paek, Janghyun (Department of Prosthodontics, School of Dentistry, Kyung Hee University) ;
  • Noh, Kwantae (Department of Prosthodontics, School of Dentistry, Kyung Hee University) ;
  • Pae, Ahran (Department of Prosthodontics, School of Dentistry, Kyung Hee University) ;
  • Kwon, Kung-Rock (Department of Prosthodontics, School of Dentistry, Kyung Hee University) ;
  • Kim, Hyeong-Seob (Department of Prosthodontics, School of Dentistry, Kyung Hee University)
  • 최지혜 (경희대학교 치과대학 치의학전문대학원 치과보철학교실) ;
  • 이영후 (경희대학교 치과대학 치의학전문대학원 치과보철학교실) ;
  • 홍성진 (경희대학교 치과대학 치의학전문대학원 치과보철학교실) ;
  • 백장현 (경희대학교 치과대학 치의학전문대학원 치과보철학교실) ;
  • 노관태 (경희대학교 치과대학 치의학전문대학원 치과보철학교실) ;
  • 배아란 (경희대학교 치과대학 치의학전문대학원 치과보철학교실) ;
  • 권긍록 (경희대학교 치과대학 치의학전문대학원 치과보철학교실) ;
  • 김형섭 (경희대학교 치과대학 치의학전문대학원 치과보철학교실)
  • Received : 2020.07.09
  • Accepted : 2020.09.29
  • Published : 2020.10.30
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Abstract

Purpose: The purpose of this study is to compare the shear bond strength of 3D printing denture base resin according to surface treatment of artificial teeth. Materials and methods: 3D printing denture base resin was fabricated as specimens using 3D printer. The experimental group divided the surface treatment of artificial teeth into five groups according to the application of sandblasting and primer (n=10). Shear bond strengths between denture base and artificial teeth were measured by universal testing machine. All measurements were analyzed by one-way ANOVA and Turkey test (α=.05). Fracture mode of each specimen was analyzed. Microscopic evaluation was conducted by using a scanning electron microscope. Results: Unsurfaced treated group represented the lowest value. The primer groups had significantly higher result values (P<.05). Most specimens of the primer groups had cohesive failure. Conclusion: In 3D printing denture base resin group, mechanical and chemical surface treatment of artificial teeth has increased the shear bond strength. Therefore, if dentures are produced using 3D printing, proper mechanical and chemical treatment of artificial teeth is necessary for adhesion of dentures and artificial teeth.

목적: 인공치의 표면처리가 3D 프린팅 의치상레진과의 전단결합강도에 미치는 영향을 알아보고 임상적용에 있어 참고하기 위함이다. 재료 및 방법: 3D 프린팅 의치상레진을 3D 프린터를 이용하여 시편을 제작하였고, 인공치의 표면처리는 sandblasting, 프라이머의 적용 유무에 따라 5가지 군으로 나누어, 각 군마다 10개씩 진행하였다. Universal testing machine을 이용하여 전단 결합 강도를 측정하였고, 측정값은 one-way ANOVA로 통계분석 후 Turkey test를 통해 사후검정하였다. 이후 파절된 시편을 주사전자현미경을 이용하여 관찰하였다. 결과: 평균전단결합강도는 표면 처리 하지 않은 군에서 가장 낮은 값을 나타내었으며, 프라이머 처리한 군에서 유의하게 높은 결과 값을 나타내었다(P < .05). 또한 프라이머 처리한 군에서 대부분 응집파절을 나타내었다. 결론: 3D 프린팅 의치상레진에 인공치를 결합 시 인공치의 기계적·화학적 표면처리는 전단결합강도를 증가시켜 3D 프린팅 방식을 사용하여 의치를 제작할 경우 기계적·화학적 표면처리를 통해 인공치의 탈락을 줄일 수 있으며, 특히 sandblasting 과 프라이머를 처리하는 방법이 추천된다.

Keywords

References

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