The effect of surface treatment on bond strength of layering porcelain and hybrid composite bonded to zirconium dioxide ceramics  Minori Hatta, DDS, PhD, Akikazu Shinya, DDS, PhD, Daiichiro Yokoyama, DDS, PhD, Harunori Gomi, DDS, PhD, Pekka K. Vallittu, DDS, PhD, CDT, Akiyoshi Shinya, DDS, PhD  Journal of Prosthodontic Research  Volume 55, Issue 3, Pages 146-153 (July 2011) DOI: 10.1016/j.jpor.2010.10.005 Copyright © 2010 Japan Prosthodontic Society Terms and Conditions

Fig. 1 Shear test device (a) and schematic image of shear bond test (b: left: front view; right: lateral view). Journal of Prosthodontic Research 2011 55, 146-153DOI: (10.1016/j.jpor.2010.10.005) Copyright © 2010 Japan Prosthodontic Society Terms and Conditions

Fig. 2 Mean shear bond strength of materials and surface treatment (**p<0.01). Journal of Prosthodontic Research 2011 55, 146-153DOI: (10.1016/j.jpor.2010.10.005) Copyright © 2010 Japan Prosthodontic Society Terms and Conditions

Fig. 3 EPMA photographs of layering porcelain and zirconia (a: #600 treated surface, b: Rocatec treated surface). Journal of Prosthodontic Research 2011 55, 146-153DOI: (10.1016/j.jpor.2010.10.005) Copyright © 2010 Japan Prosthodontic Society Terms and Conditions

Fig. 4 EPMA photographs of restorative resin and zirconia (a: #600 treated surface, b: Rocatec treated surface). Journal of Prosthodontic Research 2011 55, 146-153DOI: (10.1016/j.jpor.2010.10.005) Copyright © 2010 Japan Prosthodontic Society Terms and Conditions

Fig. 5 SPM photographs of NZR to zirconia (a: surface of layering porcelain, b: fractured surface). Journal of Prosthodontic Research 2011 55, 146-153DOI: (10.1016/j.jpor.2010.10.005) Copyright © 2010 Japan Prosthodontic Society Terms and Conditions