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. 2016 Mar-Apr;13(2):124-31.
doi: 10.4103/1735-3327.178197.

In-vitro comparison of the effect of different bonding strategies on the micro-shear bond strength of a silorane-based composite resin to dentin

Pouran Samimi  1 , Vahid Alizadeh  2 , Kamyar Fathpour  1 , Hamid Mazaheri  1 , Vajihosadat Mortazavi  3
Affiliations

In-vitro comparison of the effect of different bonding strategies on the micro-shear bond strength of a silorane-based composite resin to dentin

Pouran Samimi et al. Dent Res J (Isfahan). 2016 Mar-Apr.

Abstract

Background: The current study evaluated the micro-shear bond strengths of a new low-shrinkage composite resin to dentin.

Materials and methods: In this in-vitro study, 70 extracted premolars were assigned to one of seven groups (n = 10): Group 1: OptiBond Solo Plus (Opt; Kerr); Group 2: SE Bond (SE; Kuraray); Group 3: Silorane System Adhesive (SSA; 3M ESPE); Group 4: OptiBond Solo Plus + LS Bond (Opt LS); Group 5: SE Bond + LS Bond (SE LS); Group 6: OptiBond Solo Plus (Opt Po); and Group 7: SE Bond (SE Po). Occlusal dentin was exposed and restored with Filtek LS (3M ESPE) in groups 1 to 5 and Point 4 (Kerr) in groups 6 and 7. After thermocycling (1000 cycles at 5/55΀C), micro-shear bond test was carried out to measure the bond strengths. The results were submitted to analysis of variance and post hoc Tukeytests (P < 0.05).

Results: Two-way ANOVA showed no significant differences between the two types of composite resin (P = 0.187), between bonding agents (P = 0.06) and between composite resin and bonding agents (P = 0.894). Because P value of bonding agents was near the significance level, one-way ANOVA was used separately between the two composite groups. This analysis showed significant differences between silorane composite resin groups (P = 0.045) and Tukey test showed a significant difference between Groups 4 and 5 (P = 0.03).

Conclusion: The application of total-etch and self-etch methacrylate-based adhesives with and without use of a hydrophobic resin coating resulted in acceptable bond strengths.

Keywords: Low; bond; bonding agents; composite resins; contraction; micro; shear; strength.

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Figures

Figure 1
Figure 1
The means and standard deviations of shear bond strengths in different groups. OSP: OptiBond Solo Plus; CSEB: Clearfil SE Bond; SSA: Silorane System Adhesive; LS: LS Bond.
Figure 2
Figure 2
The failure mode frequencies for the micro-shear bond test. OSP: OptiBond Solo Plus; CSEB: Clearfil SE Bond; SSA: Silorane System Adhesive; LS: LS Bond.
Figure 3
Figure 3
Standard error mean image of interface of (OptiBond Solo Plus + LS Bond) and dentin (×1250). CR: Composite resin; T: Resin tag; D: Dentin.
Figure 4
Figure 4
Scanning electron microscopy image of the interface of (Clearfil SE-Bond + LS Bond) and dentin (×1250). CR: Composite resin; T: Resin tag; D: Dentin.
Figure 5
Figure 5
Scanning electron microscopy image of the interface of Silorane System Adhesive and dentin (×1250). CR: Composite resin; T: Resin tag; D: Dentin; H: Hybrid layer.
See this image and copyright information in PMC

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