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Porcelain-composite interface microleakage with various porcelain surface treatments
J A Sorensen1, S K Kang, S P Avera
1School of Dentistry, University of California, Los Angeles.
Summary
Porcelain surface treatments, particularly hydrofluoric acid-etching combined with silane, significantly reduce microleakage at the porcelain-composite interface. This improves the longevity of dental restorations by preventing staining and degradation.
Area of Science:
- Dental Materials Science
- Biomaterials Engineering
- Restorative Dentistry
Background:
- Microleakage at the porcelain-composite interface is a significant clinical concern, potentially leading to secondary caries and restoration failure.
- Optimizing surface treatments is crucial for enhancing the durability and longevity of dental prosthetics.
Purpose of the Study:
- To evaluate the efficacy of various porcelain surface treatments on reducing microleakage at the porcelain-composite interface.
- To assess the combined effect of hydrofluoric acid-etching and silane application on microleakage.
Main Methods:
- Porcelain tabs underwent surface treatments including hydrofluoric acid-etching and silane application.
- Composite resin was applied to porcelain surfaces using a standardized jig, followed by finishing and polishing.
- Samples were subjected to thermocycling and silver nitrate immersion to evaluate microleakage at the composite-porcelain interface.
Main Results:
- Porcelain surface treatments significantly enhanced resistance to water storage and thermal-cycling.
- Silane treatment alone did not reduce microleakage.
- The combination of hydrofluoric acid-etching and silane significantly reduced microleakage.
Conclusions:
- Hydrofluoric acid-etching combined with silane is an effective surface treatment for minimizing microleakage at the porcelain-composite interface.
- Optimized surface preparation is essential for improving the clinical performance and longevity of porcelain-composite restorations.