KMID : 0988720090250020083
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Journal of the Korean Academy of Stomatognathic Function and occlusion 2009 Volume.25 No. 2 p.83 ~ p.94
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The Effect of Surface Treatment on the Shear Bond Strength of Resin Cement to Zirconia Ceramics
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Jung Seung-Hyun
Cho Hye-Won Kim Yu-Lee Lee Jin-Han Lee Jae-In Kim Gye-Sun
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Abstract
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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§ surface polishing, (2) No treatment and 50§ surface polishing, (3) Rocatec system and 1§ surface polishing, (4) No treatment and 1§ 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§ surface roughness groups showed greater bonding strengths than 1§ 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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KEYWORD
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zirconia, Rocatec treatment, silane, self-adhesive resin cement, shear bond strength
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