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Quantitative analysis of the dentin adhesive interface by Auger spectroscopy
J D Eick1, R G Miller, S J Robinson
1Department of Oral Biology, School of Dentistry, University of Missouri-Kansas City 64108, USA.
Journal of Dental Research
|April 1, 1996
Summary
The type of dental conditioner significantly impacts how well adhesive resin penetrates demineralized dentin. Different pre-treatments affect resin distribution, crucial for successful dentin adhesive bonds.
Area of Science:
- Dental Materials Science
- Biomaterials Engineering
- Surface Chemistry
Background:
- Dentin adhesive bond success relies on the tooth-adhesive interface.
- Current systems demineralize dentin, creating a collagen mesh for resin infiltration.
- The effectiveness of resin penetration depends on the pre-treatment conditioner used.
Purpose of the Study:
- To investigate how different dentin pre-treatments affect adhesive resin penetration and distribution.
- To evaluate the role of the conditioner in the demineralized zone of dentin.
- To correlate resin distribution with specific pre-treatment methods.
Main Methods:
- Modified adhesive systems with traceable hydroxyethylthiomethacrylate (HETMA).
- Four distinct dentin pre-treatments applied to extracted teeth.
- Analysis using energy-dispersive x-ray spectroscopy (EDS) and Auger electron spectroscopy (AES).
- Scanning transmission electron microscopy (STEM) for visualization.
Main Results:
- Significant variations in HETMA penetration were observed based on the four pre-treatments.
- AES and STEM/EDS proved effective for qualitative and quantitative analysis of monomer distribution.
- The study identified differences in resin infiltration based on the conditioner used.
Conclusions:
- Dentin pre-treatment significantly influences adhesive resin penetration and distribution.
- AES and STEM/EDS are valuable correlative tools for analyzing resin-dentin interfaces.
- Optimizing pre-treatment protocols is key to enhancing dentin adhesive bond performance.