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Salivary contamination during bonding procedures with a one-bottle adhesive system
U B Fritz1, W J Finger, H Stean
1Department of Operative Dentistry, Dental School, University of Cologne, Germany.
Quintessence International (Berlin, Germany : 1985)
|November 10, 1998
Summary
Salivary contamination of dental adhesives can be managed if rinsed and dried before curing. However, contamination after curing significantly reduces bond strength, especially on dentin.
Area of Science:
- Dental Materials Science
- Adhesive Dentistry
- Biomaterials
Background:
- Salivary contamination is a common challenge during dental adhesive procedures.
- Understanding its impact on bonding efficacy is crucial for clinical success.
Purpose of the Study:
- To investigate the effect of salivary contamination on the bonding efficacy of an experimental one-bottle resin adhesive.
- To evaluate shear bond strength and marginal gap width under different contamination scenarios.
Main Methods:
- An experimental one-bottle resin adhesive was tested on enamel and dentin.
- Various contamination protocols were applied: pre- and post-curing, with different drying methods.
- Shear bond strength and marginal gap width were measured.
Main Results:
- No adverse effects were observed when contamination occurred before light curing and was properly rinsed and dried.
- Air-drying after salivary contamination led to significantly reduced bond strengths and wider marginal gaps.
- Contamination after adhesive curing compromised dentin bond strength by 50% and increased marginal gaps.
Conclusions:
- The tested one-bottle adhesive system demonstrates relative insensitivity to salivary contamination if managed before light curing.
- Careful rinsing and blot drying are essential to mitigate negative effects of pre-curing contamination.
- Salivary contact with the cured adhesive layer must be strictly avoided to maintain bond integrity.