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Related Experiment Video

Updated: May 30, 2026

Standard Test Method ASTM D 7998-19 for the Cohesive Strength Development of Wood Adhesives

Standard Test Method ASTM D 7998-19 for the Cohesive Strength Development of Wood Adhesives

Published on: May 17, 2020

Enamel wetness effects on bond strength using different adhesive systems.

A Y Furuse¹, L F Cunha, R Moresca

¹Department of Demtistry, Positivo University, Curitiba, Brazil. furuseay@hotmail.com

Operative Dentistry

|August 13, 2011

Summary

Wetness did not significantly impact the shear bond strength of most dental adhesives tested. However, all-in-one adhesives showed altered performance based on enamel surface moisture.

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Area of Science:

Dental Materials Science
Adhesive Dentistry
Biomaterials Engineering

Background:

Dentin bonding systems are crucial for achieving durable restorations.
Controlling surface wetness during bonding is a critical factor for clinical success.
Variability in adhesive performance necessitates understanding environmental influences.

Purpose of the Study:

To investigate the effect of enamel surface wetness on the shear bond strength of various dentin bonding systems.
To compare the performance of etch-and-rinse versus self-etching adhesive systems under different moisture conditions.

Main Methods:

Evaluated five adhesive systems (three etch-and-rinse, two self-etching) on bovine enamel.
Enamel surfaces were tested in both air-dried and blotted (wet) conditions.
Shear bond strength was measured after one week of water storage, with statistical analysis using ANOVA.

Main Results:

Overall wetness did not significantly affect shear bond strength across all tested adhesive systems (p=0.98).
Significant differences were observed among the adhesive systems themselves.
An 'all-in-one' adhesive system demonstrated a statistically significant difference in performance based on enamel surface moisture.

Conclusions:

The moisture level of the enamel surface generally does not influence the shear bond strength of most contemporary dentin bonding systems.
All-in-one adhesive systems may exhibit unique responses to variations in enamel surface wetness compared to other types.