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

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.

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