Effect of silorane-based adhesive system on bond strength between composite and dentin substrate

Area of Science:

• Dental Materials Science
• Biomaterials Engineering
• Adhesive Dentistry

Background:

• Maintaining a durable bond between composite resins and tooth structure is challenging due to the complex oral environment and diverse material systems.
• The dentin substrate presents unique challenges for achieving long-term adhesion in dental restorations.

Purpose of the Study:

• To investigate the influence of different adhesive systems on the bond strength of silorane-based composite resin to dentin.
• Evaluating the efficacy of various adhesive protocols in conjunction with silorane-based composites.

Main Methods:

• Fourteen human molars were sectioned into dentin fragments and restored with Z250 and P90 composite resins.
• Experimental groups utilized distinct adhesive systems: Adper Single Bond 2, Silorano primer, Adper SE Plus, and Scotchbond Multiuse.
• Micro-shear bond strength testing was performed on composite resin cylinders bonded to dentin (n=10).

Main Results:

• Statistical analysis (Kruskal-Wallis and Tukey tests) revealed significant differences in bond strength among the groups (P < 0.05).
• The P90 composite resin with the Silorano primer (PSM8) demonstrated significantly higher bond strength compared to other tested adhesive systems.
• Specific comparisons showed PSM8 outperformed P90 with Silorano primer (PSP4), P90 with Scotchbond Multiuse (PSB2), and Z250 with Adper SE Plus (ZSE5).

Conclusions:

• The monomer composition of the adhesive system plays a critical role in determining bond strength between composite resin and dentin.
• Optimizing adhesive selection is essential for enhancing the longevity and success of dental composite restorations.