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An improved preparation for indirect porcelain veneers
1Department of Conservative Dentistry, Faculty of Dentistry, University of Hong Kong.
Dental Update
|March 1, 1993
Summary
A modified porcelain veneer preparation technique effectively controls marginal microleakage. This method removes cracked enamel at the cervical margin, preventing leakage in dental restorations.
Area of Science:
- Dental Materials Science
- Restorative Dentistry
- Clinical Dentistry
Background:
- Conventional porcelain laminate veneer preparations often exhibit marginal microleakage.
- This leakage is frequently linked to enamel cracks adjacent to the veneer margin.
Purpose of the Study:
- To describe a modified veneer preparation technique to control marginal microleakage.
- To address enamel defects contributing to microleakage at the cervical margin.
Main Methods:
- A modified preparation involves creating an additional short bevel at the cervical margin.
- This beveling removes defective enamel prior to veneer cementation.
Main Results:
- The modified preparation effectively controls microleakage at the cervical margin.
- Removing cracked enamel is crucial for preventing leakage.
Conclusions:
- A modified veneer preparation incorporating a short cervical bevel is effective in managing marginal microleakage.
- This technique enhances the longevity and seal of porcelain laminate veneers.