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SEM evaluation of etch patterns by three etchants on three porcelains.
A al Edris1, A al Jabr, R L Cooley
1University of Texas Health Science Center, Dental School, San Antonio.
The Journal of Prosthetic Dentistry
|December 1, 1990
Summary
This study compared three etchants for creating surface roughness on dental porcelains. Acidulated Phosphate Fluoride Gel showed the most promising results for micromechanical retention.
Area of Science:
- Dental Materials Science
- Biomaterials Engineering
- Surface Chemistry
Background:
- Micromechanical retention is crucial for dental restorations.
- Etching porcelain surfaces enhances bonding.
- Evaluating etchant efficacy is vital for clinical success.
Purpose of the Study:
- To assess the micromechanical retentive capabilities of three etchants.
- To compare the effectiveness of Super Etch, Stripit, and Acidulated Phosphate Fluoride Gel.
- To determine optimal etching protocols for commercial porcelains.
Main Methods:
- Three etchants (Super Etch, Stripit, Acidulated Phosphate Fluoride Gel) were applied to three porcelains (Ceramco II, Mirage, Vita).
- Surface topography was analyzed to evaluate micromechanical retention.
- Microscopic examination assessed the created retentive areas.
Main Results:
- Significant differences in micromechanical retention were observed among etchants and porcelains.
- Acidulated Phosphate Fluoride Gel demonstrated superior ability to create retentive surface areas.
- Porcelain type influenced the effectiveness of each etchant.
Conclusions:
- Etchant selection significantly impacts micromechanical retention on porcelain substrates.
- Acidulated Phosphate Fluoride Gel is a promising option for preparing porcelain surfaces for bonding.
- Further research should optimize etchant application for specific porcelain types.