Journal of Dental Rehabilitation and Applied Science (구강회복응용과학지)

Korean Academy of Stomatognathic Function and Occlusion (대한턱관절교합학회)
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Comparison of shear bond strength according to porcelain build-up methods

도재 축성 방법에 따른 금속 도재관의 전단결합강도 비교

  • Lee, Ha-Young (Department of Prosthodontics, School of Dentistry, Kyungpook National University) ;
  • Cho, Jin-Hyun (Department of Prosthodontics, School of Dentistry, Kyungpook National University) ;
  • Lee, Cheong-Hee (Department of Prosthodontics, School of Dentistry, Kyungpook National University)
  • 이하영 (경북대학교 치의학전문대학원 치과보철학교실) ;
  • 조진현 (경북대학교 치의학전문대학원 치과보철학교실) ;
  • 이청희 (경북대학교 치의학전문대학원 치과보철학교실)
  • Received : 2014.03.26
  • Accepted : 2014.04.25
  • Published : 2014.06.30
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Abstract

Purpose: This study compared the shear bond strength of heat pressed and feldspathic porcelain to metal. Through thermocycling, the clinical aspect of heat pressed porcelain fused metal was estimated. Materials and Methods: 90 non-precious metal specimens were made ($4{\times}4{\times}8 mm$) and divided to three groups. All spicimens were treated and built-up with the porcelain ($4{\times}4{\times}3 mm$) by 2 different methods according to group: Group I: $Inspiration^{(R)}$, Group II: Ivoclar, IPS $Inline^{(R)}PoM$, Group III: GC Initial IQ-One $Body^{(R)}PoM$. The half of each group's specimens were thermocycled. All specimens' shear bond strength were measured by Instron universal testing machine. Exact measuring point was far 1 mm from porcelain/metal interface to the porcelain side. For the statistical analysis, 2-way ANOVA was used. Results: In no-thermocycling specimens, the shear bond strength showed no statistical significance between each group (P > 0.05). In comparison between nothermocycling and thermocycling specimens in each group, the shear bond strength was decreased according to thermocycling, but there was no statistical significance (P > 0.05). In thermocycling specimens, there was no statistical significance between each group (P > 0.05). Conclusion: In feldspathic porcelain and other two types heat pressed porcelain, there was no statistical difference in the shear bond strength of porcelain to metal. The heat pressed porcelain seems to be clinically useful for the aspect of the shear bond strength.

목적: 이 논문의 목적은 열가압법을 이용한 도재의 축성이 금속과 어떠한 결합력을 나타내는지 알아보는 것이다. 연구 재료 및 방법: 90개의 비귀금속 시편($4{\times}4{\times}8mm$)을 제작하여 세 개의 군으로 나누었다. 모든 시편은 군에 따라 2종류의 다른 방법으로 포세린 축성($4{\times}4{\times}3mm$)하였다: Group I : $Inspiration^{(R)}$, Group II : Ivoclar, IPS $Inline^{(R)}PoM$, Group III: GC Initial IQ-One $Body^{(R)}PoM$. 각 군의 시편의 반은 열순환시켰다. 모든 시편의 전단 결합 강도는 Instron universal testing machine을 이용하여 측정하였다. 통계학적 분석을 위해, 2-way ANOVA가 사용되었다. 결과: 열순환을 하지 않은 시편의 전단결합강도는 모든 실험군에서 유사한 값으로 나타나 통계적 유의성이 없었다(P > 0.05). 각 실험군에서 열순환 처리 한 시편에서는 전단결합강도의 감소가 나타났으나 통계적 유의성은 없었다(P > 0.05). 열순환 처리한 시편의 실험군간 전단결합강도 비교에서 실험 III군에서 높게 나타났으나 유의한 차이는 없었다(P > 0.05). 결론: 전단결합력의 관점에서 보았을 때 열가압성형 도재는 임상적으로 유의한 것으로 사료된다.

Keywords

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