Related Experiment Video
Updated: May 16, 2026
08:40
Standard Test Method ASTM D 7998-19 for the Cohesive Strength Development of Wood Adhesives
Published on: May 17, 2020
Effect of substrate age and adhesive composition on dentin bonding
J Perdigão1, Ana Sezinando, Paulo C Monteiro
1Department of Restorative Sciences, University of Minnesota, Minneapolis, MN 55455, USA. perdi001@umn.edu
Operative Dentistry
|December 6, 2012
Summary
Dentin age affects the bond strength of three-step etch&rinse adhesives. The addition of a carboxylic-based polymer improved the bonding of two-step etch&rinse adhesives, indicating its importance in dental bonding.
Area of Science:
- Dental Materials Science
- Adhesive Dentistry
- Biomaterials
Background:
- Dentin bonding is crucial for the longevity of dental restorations.
- Understanding factors influencing bond strength, such as dentin age and adhesive composition, is essential for improving clinical outcomes.
- Microtensile bond strength (μTBS) is a standard method for evaluating dentin adhesive performance.
Purpose of the Study:
- To investigate the impact of dentin age and the composition of five different dentin adhesives on their microtensile dentin bond strengths (μTBS).
- To compare the performance of one-step, two-step, and three-step etch&rinse adhesive systems.
- To evaluate the role of a specific co-polymer (CP) in the performance of self-etch and etch&rinse adhesives.
Main Methods:
- Sixty human teeth were categorized into three age groups: <21, 21-40, and >40 years.
- Five adhesives were tested: Adper Easy Bond (EB), EB without co-polymer (EBnoCP), Adper Single Bond Plus (SB), SB without co-polymer (SBnoCP), and Adper Scotchbond Multi-Purpose (MP) as control.
- Specimens were prepared and subjected to μTBS testing at a crosshead speed of 1 mm/min.
- Statistical analysis involved t-tests and two-way ANOVA with Fisher's LSD post hoc tests (p < 0.05).
Main Results:
- The three-step etch&rinse control (MP) showed the highest μTBS across all age groups.
- Adper Easy Bond (EB) and EB without co-polymer (EBnoCP) exhibited similar μTBS.
- Adper Single Bond Plus (SB) demonstrated significantly higher μTBS than SBnoCP across all age groups.
- The oldest dentin group (>40) showed lower μTBS with the MP adhesive compared to the youngest group (<21).
Conclusions:
- Dentin age significantly influences the bonding effectiveness of the three-step etch&rinse adhesive.
- The inclusion of a carboxylic-based polymer (CP) demonstrably enhances the bonding performance of the two-step etch&rinse adhesive.
- These findings highlight the importance of adhesive formulation and substrate characteristics in achieving durable dental restorations.
