Related Experiment Video
Updated: May 15, 2025
07:42
Quasistatic Mechanical Testing for Computer-Aided Design and Manufacturing Occlusal Veneers Cemented to Milled Dentin Analog Material
Published on: December 20, 2024
274
Improving Bonding Protocols: The Effect of Selective Dentin Etching with Two Different Universal Adhesives-An In
Sandro Ferreira1, Tiago Rodrigues1, Mariana Nunes1
1Egas Moniz University Clinic, Egas Moniz School of Health & Science, 2829-511 Almada, Portugal.
Polymers
|May 14, 2025
Summary
Selective dentin etching (SDE) improved universal adhesives' bond strength to dentin. However, effectiveness varied between Optibond™ Universal and Futurabond M+, indicating tailored application strategies are crucial for optimal dentin bonding.
Area of Science:
- Dental Materials Science
- Adhesive Dentistry
- Biomaterials Engineering
Background:
- Universal adhesives offer versatile application strategies in restorative dentistry.
- Selective dentin etching (SDE) is a promising technique to enhance the dentin-adhesive interface.
- Optimizing dentin bonding is critical for the longevity of dental restorations.
Purpose of the Study:
- To evaluate the immediate dentin bond strength of two universal adhesives using a selective dentin etching (SDE) strategy.
- To compare the effectiveness of SDE versus a self-etch strategy for universal adhesives.
- To analyze the influence of multiple adhesive layers in the SDE strategy on bond strength.
Main Methods:
- Sixty human molars were divided into six groups, testing two universal adhesives (Optibond™ Universal, Futurabond M+) with self-etch, SDE, and SDE with three layers (SDE3) protocols.
- Microtensile bond strength was assessed after 24-hour water storage.
- Failure modes were classified, and interfaces were examined using scanning electron microscopy (SEM).
Main Results:
- Both universal adhesives showed increased bond strength with SDE compared to the control, with statistical significance in Futurabond M+ (p < 0.001).
- Optibond™ Universal required three adhesive layers (SDE3) for a statistically significant increase in bond strength (p < 0.001).
- Adhesive failures were predominant, and SEM revealed longer, more numerous resin tags in SDE and SDE3 groups.
Conclusions:
- The SDE strategy enhances immediate dentin bond strength for universal adhesives, but results are product-specific.
- Application strategies for universal adhesives should be tailored to their formulations for optimal dentin bonding.
- Further research into SDE variations may yield improved clinical outcomes.
