The Journal of Korean Academy of Prosthodontics (대한치과보철학회지)

The Korean Academy of Prosthodonitics (대한치과보철학회)
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The influence of surface conditioning on the shear bond strength of self-adhesive resin cement to zirconia ceramics

표면처리방법이 지르코니아와 수종의 시멘트의 전단결합강도에 미치는 영향

  • Jung, Ji-Hye (Department of Dentistry, Graduate School, Wonkwang University) ;
  • Jung, Seung-Hyun (Department of Dentistry, Graduate School, Wonkwang University) ;
  • Cho, Hye-Won (Department of Dentistry, Graduate School, Wonkwang University) ;
  • Kim, Yu-Lee (Department of Dentistry, Graduate School, Wonkwang University)
  • 정지혜 (원광대학교 치과대학 치과보철학교실) ;
  • 정승현 (원광대학교 치과대학 치과보철학교실) ;
  • 조혜원 (원광대학교 치과대학 치과보철학교실) ;
  • 김유리 (원광대학교 치과대학 치과보철학교실)
  • Received : 2010.07.19
  • Accepted : 2010.09.29
  • Published : 2010.10.29
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Abstract

Purpose: To evaluate the effect of surface conditioning on the shear bond strength of zirconium-oxide ceramic to 4 luting agents. Materials and methods: A total of 120 diskshaped zirconium-oxide ceramic blocks (3Y-TZP, Kyoritsu, Japan) were treated as follows: (1) Sandblasting with $110\;{\mu}m$ aluminum-oxide ($Al_2O_3$) particles; (2) tribochemical silica coating (Rocatec) using $110\;{\mu}m$ $Al_2O_3$ particles modified by silica; (3) no treatment. Then zirconium-oxide ceramic blocks bonded with 4 luting cements (RelyX luting (3M ESPE), Maxcem (Kerr), Nexus3 (Kerr), Rely X Unicem (3M ESPE)). Each group was tested in shear bond strengths by UTM. A 1-way analysis of variance and 2-way analysis of variance was used to analyze the data ($\alpha$ = .05). Results: RelyX unicem in combination tribochemical silica-coating produced a highest bond strength (P < .05). Air abrasion group and Rocatec treatment groups resulted in significantly higher than no conditioning group (P < .05). RelyX Luting groups showed lower bond strength than other groups. There were significant differences among groups (P < .05). Conclusion: Within the limitation of this study, RelyX Unicem cement provided the highest bond strength and Rocatec treatment enhanced the bond strength.

연구 목적: 이 연구의 목적은 표면처리방법이 지르코니아와 네 종류의 시멘트의 전단결합 강도에 미치는 영향을 평가하는 것이다. 연구 재료 및 방법: 총 120개의 디스크 모양의 산화 지르코늄 (3Y-TZP, Kyoritsu, Tokyo, Japan) 시편을 다음과 같이 표면처리 하였다: (1) $110\;{\mu}m$ 산화 알루미나 분사처리 (2) Silica coating ($Rocatec^{TM}$ 3M ESPE)를 이용한 표면처리 (3) 처리하지 않음. 각각의 표면 처리 후, 2종의 자가 접착형 시멘트 (RelyX Unicem, Maxcem)와 레진 강화 글라스 아이오노머 시멘트 (RelyX Luting), Bis-GMA 레진 시멘트 (Nexus3)를 시편에 부착하였으며 각 군은 UTM을 이용하여 전단결합강도를 측정하였다. 표면처리, 시멘트의 종류에 따른 결합강도의 차이를 살펴보기 위하여 일원변량분석 (One-way ANOVA)과 이원변량분석 (two-way ANOVA)을 이용하고 사후 분석으로 Tukey HSD test를 실시하였다. 결과: 로카텍 처리 후, RelyX Unicem을 부착한 군이 가장 높은 결합 강도를 보였으며 (P<.05) 알루미나 분사처리를 한 군과 로카텍 처리를 한 군은 아무런 처리를 하지 않은 군보다 유의하게 높은 결합 강도를 보였다 (P<.05). 또한 모든 표면상태에서 RelyX Luting은 다른 군에 비해 통계적으로 유의하게 가장 낮은 결합강도를 보였다 (P<.05). 결론: 본 연구의 결과에 따르면 RelyX Unicem은 지르코니아와 강한 결합력을 보였으며 로카텍 처리는 결합을 증진시키는데 효과적이었다.

Keywords

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