Journal of Dental Rehabilitation and Applied Science (구강회복응용과학지)

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

The Effect of Surface Treatment on the Shear Bond Strength of Resin Cement to Zirconia Ceramics

표면처리가 지르코니아와 레진 시멘트의 전단결합강도에 미치는 효과

  • Jung, Seung-Hyun (Department of Dentistry, Graduate School, Wonkwang University) ;
  • Kim, Kye-Soon (Department of Dentistry, Graduate School, Wonkwang University) ;
  • Lee, Jae-In (Department of Dentistry, Graduate School, Wonkwang University) ;
  • Lee, Jin-Han (Department of Dentistry, Graduate School, Wonkwang University) ;
  • Kim, Yu-Lee (Department of Dentistry, Graduate School, Wonkwang University) ;
  • Cho, Hye-Won (Department of Dentistry, Graduate School, Wonkwang University)
  • 정승현 (원광대학교 치과대학 치과보철학 교실) ;
  • 김계순 (원광대학교 치과대학 치과보철학 교실) ;
  • 이재인 (원광대학교 치과대학 치과보철학 교실) ;
  • 이진한 (원광대학교 치과대학 치과보철학 교실) ;
  • 김유리 (원광대학교 치과대학 치과보철학 교실) ;
  • 조혜원 (원광대학교 치과대학 치과보철학 교실)
  • Received : 2009.03.11
  • Accepted : 2009.06.25
  • Published : 2009.06.30
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Abstract

The aim of this study was to investigate the shear bond strength between zirconia ceramic and resin cement according to various surface treatments. The surface of each zirconia ceramic was subjected to one of the following treatments and then bonded Rely X Unicem or Rely X ARC resin cement; (1) Rocatec system and $50{\mu}m$ surface polishing, (2) No treatment and $50{\mu}m$ surface polishing, (3) Rocatec system and $1{\mu}m$ surface polishing, (4) No treatment and $1{\mu}m$ surface polishing. Each of eight bonding group was tested in shear bond strengths by universal testing machine(Z020, Zwick, Ulm, Germany) with crosshead speed of 1mm/min. The results were as follows; 1. Rocatec treatment groups showed greater bonding strengths than No Rocatec groups. There was significant difference of among groups(P<0.001) 2. For Rocatec groups, $50{\mu}m$ surface roughness groups showed greater bonding strengths than $1{\mu}m$ surface roughness groups.(P<0.001) But for No Rocatec groups, There was no significant difference of among groups(P>0.05) 3. Rely X Unicem groups showed greater bonding strengths than Rely X ARC groups. There was significant difference of among groups(P<0.01) Within the conditions of this study, Rocatec treatment was an effective way of increasing zirconia bonds to a resin cement, even in the case of self-adhesive resin cement.

본 연구는 지르코니아의 연마 정도와 tribochemical coating 등 두 가지 표면처리가 두 가지 레진 시멘트, 즉 Bis-GMA 계 레진 시멘트와 자가접착형 레진 시멘트와의 결합력에 어떠한 영향을 미치는가를 연구 비교하였다. $1{\mu}m$과 $50{\mu}m$ 의 다이아몬드 디스크로 연마한 지르코니아 시편을 만들어 접착기전이 다른 두 가지 레진 시멘트 RelyX ARC(3M Espe, USA)와 RelyX Unicem(3M Espe, USA)으로 결합시켰다. 지르코니아 표면에 로카텍 시스템 처리를 한 군과 하지 않은 군을 비교해 지르코니아와 레진 시멘트 사이의 전단결합강도를 측정하여 다음과 같은 결론을 얻었다. 1. 로카텍 시스템으로 표면처리를 한 군이 하지 않은 군에 비해 높은 전단결합강도를 보였다(P < 0.001). 2. 로카텍 시스템으로 표면처리를 한 군에서는 $50{\mu}m$ 연마 군이 $1{\mu}m$ 연마 군에 비해 높은 전단결합강도를 보였으며 통계학적 유의성을 보였다(P <0.001). 그러나 로카텍 처리를 하지 않은 군에서는 $50{\mu}m$ 연마 군과 $1{\mu}m$ 연마 군 간의 차이는 없었다(P >0.01). 3. RelyX Unicem을 이용하여 접착한 군이 RelyX ARC를 이용하여 접착한 군에 비해 높은 전단결합강도를 보였다(P < 0.01). 본연구의 결과에 따르면, 새로운 형태의 자가접착형 레진 시멘트의 지르코니아와의 전단결합강도는 기존의 Bis-GMA 계 레진 시멘트보다 우수하였으나, 제조자의 지시와 달리 지르코니아 표면에 로카텍 처리를 하는 것이 전단결합강도의 증진에 매우 효과적이었다.

Keywords

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