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. 2019 Aug;11(4):223-231.
doi: 10.4047/jap.2019.11.4.223. Epub 2019 Aug 27.

Effect of surface treatments on the bond strength of indirect resin composite to resin matrix ceramics

Ersan Çelik  1 , Sezgi Cinel Şahin  2 , Doğu Ömür Dede  1
Affiliations

Effect of surface treatments on the bond strength of indirect resin composite to resin matrix ceramics

Ersan Çelik et al. J Adv Prosthodont. 2019 Aug.

Abstract

Purpose: The purpose of this study was to evaluate the shear bond strength (SBS) of an indirect resin composite (IRC) to the various resin matrix ceramic (RMC) blocks using different surface treatments.

Materials and methods: Ninety-nine cubic RMC specimens consisting of a resin nanoceramic (RNC), a polymer-infiltrated hybrid ceramic (PIHC), and a flexible hybrid ceramic (FHC) were divided randomly into three surface treatment subgroups (n = 11). In the experimental groups, untreated (Cnt), tribochemical silica coating (Tbc), and Neodymium-Doped Yttrium Aluminum Garnet (Nd:YAG) laser irradiation (Lsr) with 3 W (150 mJ/pulse, 20 Hz for 20 sec.) were used as surface treatments. An indirect composite resin (IRC) was layered with a disc-shape mold (2 × 3 mm) onto the treated-ceramic surfaces and the specimens submitted to thermal cycling (6000 cycles, 5 - 55℃). The SBS test of specimens was performed using a universal testing machine and the specimens were examined with a scanning electron microscope to determine the failure mode. Data were statistically analyzed with two-way analysis of variance (ANOVA) and Tukey HSD test (α=.05).

Results: According to the two-way ANOVA, only the surface treatment parameter was statistically significant (P<.05) on the SBS of IRC to RMC. The SBS values of Lsr-applied RMC groups were significantly higher than Cnt groups for each RMC material, (P<.05). Significant differences were also determined between Tbc surface treatment applied and untreated (Cnt) PIHC materials (P=.039).

Conclusion: For promoting a reliable bond strength during characterization of RMC with IRC, Nd:YAG laser or Tbc surface treatment technique should be used, putting in consideration the microstructure and composition of RMC materials and appropriate parameters for each material.

Keywords: Ceramics; Composite resins; Laser; Shear strength.

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Figures

Fig. 1
Fig. 1. Schematic view of SBS testing.
Fig. 2
Fig. 2. SEM images (× 2000 magnification) of FHC RMC groups: (A) Cnt, (B) Tbc, (C) Lsr.
Fig. 3
Fig. 3. SEM images (× 2000 magnification) of PIHC RMC groups: (A) Cnt, (B) Tbc, (C) Lsr.
Fig. 4
Fig. 4. SEM images (× 2000 magnification) of RNC RMC groups: (A) Cnt, (B) Tbc, (C) Lsr.
See this image and copyright information in PMC

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