Journal of Dental Rehabilitation and Applied Science (구강회복응용과학지)

Korean Academy of Stomatognathic Function and Occlusion (대한턱관절교합학회)
권호 표지

Shear Bond Strength of Resin Cements on the IPS e.max Press

IPS e.max Press에 대한 수종 레진 시멘트의 전단결합강도에 관한 연구

  • Lee, Kyung-Eun (Department of Dentistry, Graduate School, Wonkwang University) ;
  • Kim, Yu-Lee (Department of Dentistry, Graduate School, Wonkwang University) ;
  • Shin, Chang-Yong (Department of Dentistry, Graduate School, Wonkwang University) ;
  • Dong, Jin-Keun (Department of Dentistry, Graduate School, Wonkwang University)
  • 이경은 (원광대학교 치과대학 치과보철학교실) ;
  • 김유리 (원광대학교 치과대학 치과보철학교실) ;
  • 신창용 (원광대학교 치과대학 치과보철학교실) ;
  • 동진근 (원광대학교 치과대학 치과보철학교실)
  • Received : 2010.07.25
  • Accepted : 2010.09.25
  • Published : 2010.09.30
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Abstract

The purpose of this study was to evaluate the bond strengths between IPS e.max Press and four different types of resin cements that often used for esthetic restoration. Disc shaped IPS e.max Press blocks(N=40, diameter: 12mm, thickness: 3mm) were fabricated according to the manufacture's instruction and cleaned with ultrasonic cleaner. They were embedded into an autopolymerizing acrylic resin. Fourty cylinder shaped resin block(Filtek Z350, diameter: 4.5mm, thickness: 3mm) were fabricated using a plastic tube. Each specimens were randomly divided into 4 experimental group and bonded each other using 4 different resin cements(Variolink II(light-cure), Variolink II(dual-cure), Calibra, Super-Bond C&B) according to the manufactures' recommendations. All the specimens were stored in normal saline at $37^{\circ}C$ for 24 hours before test. Universal testing machine at a crosshead speed of 1mm/min was used to evaluate the shear bond strength. The data were statistically analyzed using one-way ANOVA(P<.01). Multiple comparison was done by the Tukey HSD test. The shear bond strength of Super-Bond C&B to e.max was significantly lower than those of Calibra, Variolink II(light-cure), Variolink II(dual-cure) (P<.01). The shear bond strength of Calibra, Variolink II(light-cure), Variolink II(dual-cure) to e.max were not significantly different. The shear bond strengths of light-cure/dual-cure cement were higher than that of self-cure cement.

본 연구는 최근 심미수복에 흔히 사용되는 IPS e.max Press와 각종 레진 시멘트간의 결합강도를 알아보고자 하였다. 직경 12mm, 높이 3mm의 원반형 IPS e.max Press 시편을 제조사의 지시에 따라 만들어 초음파로 세척하여 자가중합 아크릴릭 레진에 포매하였다. 플라스틱 튜브를 사용하여 직경 4.5mm, 높이 3mm의 40개의 원주형 레진 시편을 제작하였다. 각각의 시편은 무작위로 4개의 실험군으로 나뉘고 4 종류의 서로 다른 레진 시멘트(Variolink II(light-cure), Variolink II(dual-cure), Calibra, Super-Bond C&B)를 이용하여 제조사의 지시에 따라 부착하였다. 부착된 시편은 강도 측정 전에 $37^{\circ}C$ 에서 24시간 동안 생리식염수에 보관하였다. 만능시험기를 사용하여 1mm/min 의 crosshead speed로 각 시편에 힘을 가하여 전단결합강도를 측정하였다. 측정된 결합강도는 SPSS V12.0을 사용하여 일원배치 분산분석으로 비교 분석하였으며, 사후 검증은 Tukey HSD test를 이용하여 분석하였다. Super-Bond C&B의 전단결합강도는 Calibra, Variolink II(light-cure), Variolink II(dual-cure)에 비해 유의하게 낮은 값을 나타내었다(P<.01). Calibra, Variolink II(light-cure), Variolink II(dual-cure)는 전단결합강도에서 서로 유의한 차이를 보이지 않았다. 광중합형과 이원 중합형 레진 시멘트의 전단결합강도는 자가 중합형 시멘트보다 높았다.

Keywords

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