The Journal of Korean Academy of Prosthodontics (대한치과보철학회지)

The Korean Academy of Prosthodonitics (대한치과보철학회)
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Comparative study in marginal adaptation of zirconia cores fabricated with 3 different CAD/CAM systems

3종의 CAD/CAM 시스템에서 지르코니아 코어의 변연 적합도에 관한 비교 연구

  • Kwon, Yong-Joong (Department of Dentistry, College of Medicine, Hanyang University) ;
  • Lee, Young-Soo (Department of Dentistry, College of Medicine, Hanyang University) ;
  • Park, Won-Hee (Department of Dentistry, College of Medicine, Hanyang University)
  • 권용중 (한양대학교 의과대학 치과학교실) ;
  • 이영수 (한양대학교 의과대학 치과학교실) ;
  • 박원희 (한양대학교 의과대학 치과학교실)
  • Published : 2008.02.29
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Abstract

Statement of problem: There have been many studies about marginal adaptation of Zirconia core fabricated with various CAD/CAM systems. But, the comparative study has not been conducted much. Purpose: This study was to compare marginal adaptations of zirconia cores fabricated with 3 different CAD/CAM systems. Material and methods: The in vitro marginal adaptations of zirconia cores fabricated with 3 different CAD/CAM systems($Adens^{(R)}$ system, $Lava^{(R)}$ system, and $Cerasys^{(R)}$ system) were evaluated and compared. In this study 30 zirconia cores were fabricated(10 zirconia cores per each system). The measurements of the marginal adaptatioin were carried out using microscope $L-150A^{(R)}$(Nikon, Japan). Measurements were recorded at 50 points. The measurements were analyzed using Kruskal-Wallis test and Wilcoxon rank sum test. Results: Within the limits of this study, the results were as follows. 1. Mean marginal gap values obtained were $284.5{\pm}152.9{\mu}m$ in Adens system, $99.0{\pm}73.0{\mu}m$ in Lava system, and $153.5{\pm}85.7{\mu}m$ in Cerasys system. 2. Zirconia core made by Lava system showed the smallest marginal gap(P<0.05). Conclusion: In the limitation of this study, we concluded that $Lava^{(R)}$ System was superior than other systems($Adens^{(R)}$ system and $Cerasys^{(R)}$ system) in the marginal adaptation.

최근 개발된 다양한 CAD/CAM 시스템으로 제작된 지르코니아 코어의 변연 적합도에 관해 많은 연구가 있었다. 그러나 비교 연구는 미흡한 실정이다. 본 연구의 목적은 3종의 CAD/CAM 시스템에서 단일 전부 도재관을 위한 지르코니아 코어의 변연 적합도를 비교하는 것이다. 실험을 통하여 3종의 CAD/CAM 시스템($Adens^{(R)}$ 시스템, $Lava^{(R)}$ 시스템, $Cerasys^{(R)}$ 시스템) 으로 제작된 지르코니아 코어의 변연 적합도를 비교하였다. 각 시스템당 10개의 지르코니아 코어를 제작하였다. 광학현미경($L-150A^{(R)}$, Nikon, Japan)을 사용하여 총 50곳의 변연 간격을 측정하였다. 통계처리는 Kruskal Wallis test와 Wilcoxon Rank Sum test를 시행하였다. 단일 전부 도재관을 위한 지르코니아 코어의 총 변연간격은 $Adens^{(R)}$ 시스템이 $284.5{\pm}152.9{\mu}m$, $Lava^{(R)}$ 시스템이 $99.0{\pm}73.0{\mu}m$, 그리고 $Cerasys^{(R)}$ 시스템이 $153.5{\pm}85.7{\mu}m$ 이었다. 본 연구내에서, $Lava^{(R)}$ 시스템이 다른 시스템에 비해 우수한 변연 적합도를 보였다.

Keywords

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