J Adv Prosthodont.  2016 Aug;8(4):259-266. 10.4047/jap.2016.8.4.259.

Effect of surface treatments on shear bond strength of resin composite bonded to CAD/CAM resin-ceramic hybrid materials

  • 1Department of Prosthodontics, Faculty of Dentistry, Gazi University, Ankara, Turkey. secilkarakoca@yahoo.com


The purpose of this study was to assess the effect of surface treatments on shear bond strength of resin composite bonded to thermocycled and non-thermocycled CAD/CAM resin-ceramic hybrid materials.
120 specimens (10×10×2 mm) from each material were divided into 12 groups according to different surface treatments in combination with thermal aging procedures. Surface treatment methods were airborne-particle abrasion (abraded with 50 micron alumina particles), dry grinding (grinded with 125 µm grain size bur), and hydrofluoric acid (9%) and silane application. According to the thermocycling procedure, the groups were assigned as non-thermocycled, thermocycled after packing composites, and thermocycled before packing composites. The average surface roughness of the non-thermocycled specimens were measured after surface treatments. After packing composites and thermocycling procedures, shear bond strength (SBS) of the specimens were tested. The results of surface roughness were statistically analyzed by 2-way Analysis of Variance (ANOVA), and SBS results were statistically analyzed by 3-way ANOVA.
Surface roughness of GC were significantly lower than that of LU and VE (P<.05). The highest surface roughness was observed for dry grinding group, followed by airborne particle abraded group (P<.05). Comparing the materials within the same surface treatment method revealed that untreated surfaces generally showed lower SBS values. The values of untreated LU specimens showed significantly different SBS values compared to those of other surface treatment groups (P<.05).
SBS was affected by surface treatments. Thermocycling did not have any effect on the SBS of the materials except acid and silane applied GC specimens, which were subjected to thermocycling before packing of the composite resin.


Surface treatment; Shear bond strength; Resin ceramic hybrids

MeSH Terms

Aluminum Oxide
Hydrofluoric Acid
Aluminum Oxide
Hydrofluoric Acid


  • Fig. 1 Schematic diagram of experimental groups.

  • Fig. 2 Schematic diagram of shear bond strength test.

Cited by  1 articles

Effect of surface treatments on the bond strength of indirect resin composite to resin matrix ceramics
Ersan Çelik, Sezgi Cinel Şahin, Doğu Ömür Dede
J Adv Prosthodont. 2019;11(4):223-231.    doi: 10.4047/jap.2019.11.4.223.


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