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      Surface wettability and nano roughness at different grit blasting operational pressures and their effects on resin cement to zirconia adhesion.

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          Abstract

          This study analyzed the effect of grit blasting pressures on resin cement to zirconia (ZrO2) adhesion using enclosed mold shear bond test (EM-SBS). ZrO2 blanks were pre-treated with Rocatec™ Soft as follows: group 1: control, group 2: specimens treated at 80 kPa, group 3: at 180 kPa, group 4: at 280 kPa, and group 5: at 380 kPa. Monobond® N and Multilink® Speed were used as the silane and resin cement, respectively. Next, the blanks were assigned into three sub-groups (n=8, N=108) according to storage conditions. A non-linear relation was observed between EM-SBS and contact angle versus grit blasting pressure (r=-0.542, p=0.01). According to ANOVA (p<0.05), the EM-SBS values with both 180 kPa (17.4±6.7 MPa) and 280 kPa (19.4±4.8 MPa) were statistically higher after 12,000 thermo-cycles. Relatively equal thermo-cycled bond strength might also be achieved with intermediate (180 kPa) grit blasting pressure instead of the recommended 280 kPa.

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          Author and article information

          Journal
          Dent Mater J
          Dental materials journal
          Japanese Society for Dental Materials and Devices
          1881-1361
          0287-4547
          Jun 01 2019
          : 38
          : 3
          Affiliations
          [1 ] Dental Biomaterials Research Chair, College of Applied Medical Sciences, King Saud University.
          [2 ] Community Health Department, College of Applied Medical Sciences, King Saud University.
          [3 ] Department of Biomedical Engineering, NED University of Engineering & Technology.
          [4 ] Oral Basic and Clinical Sciences Department, Faculty of Dentistry, King Abdul Aziz University.
          [5 ] Department of Biomaterials Science, Institute of Dentistry, University of Turku.
          [6 ] City of Turku, Welfare Division.
          [7 ] Visiting professor King Saud University.
          Article
          10.4012/dmj.2018-137
          30867349
          f53cc9cd-03e3-4faa-9e5a-f32e5c263400
          History

          Adhesion,Enclosed mold shear bond strength,Grit blasting pressure,Resin cement,Zirconia

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