Dental Publication / Article Details |
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Porcelain Veneer Preparations - To Prep or Not to Prep
Author(s):
Edward A. McLaren, DDS, MDC
Date Added:
5/17/2011
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Summary:
In recent years, bonded porcelain restorations have geometrically expanded in their clinical use. Increased patient demands for esthetics coupled with the desire by the profession for conservative treatments have fueled this expansion. Early concerns about the fragile nature of the thin shells of ceramic have been allayed as multiple clinical reports have documented good to excellent clinical success. Because of this documented success, porcelain veneers have been used for more restorative situations and not for just esthetic enhancement. One exhaustive study that followed veneers for up to 15 years reported total failures of only 7%, equaling approximately a 1% chance of failure per year. Of the reported failures, more than half were fractures. Several other reports documenting the success or failure of porcelain veneers cite margin placement and whether or not the margins were placed in enamel as the primary causes of failure.
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The article evaluates the long-term clinical performance of porcelain laminate veneers bonded to teeth prepared with the use of an additive mock-up and aesthetic pre-evaluative temporary (APT) technique over a 12-year period. Sixty-six patients were restored with 580 porcelain lamintate veneers. Over 12 years, 42 laminate veneers failed, but when the preparations were limited to the enamel, the failure rate resulting from debonding and microleakage decreased to 0%. Porcelain laminate veneers presented a successful clinical performance in terms of marginal adaptation, discoloration, gingival recession, secondary caries, postoperative sensitivity, and satisfaction with restoration shade at the end of 12 years. The APT technique facilitated diagnosis, communication and preparation providing predictability for the restorative treatment. Limiting the preparation depth to the enamel surface significantly increases the performance of porcelain laminate veneers.
| Author(s): |
Galip Gurel, DDS;Susana Morimoto, DDS, MSD, Phd; Marcelo A. Calamita, DDS, MSD, PhD; Christian Coachman, DDS, CDT; Newton Sesma, DDS, MSD, PhD |
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Reconstruccion Protesica Gingival
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Producing the Ultimate Veneer
By completing this course you will receive 1 CEU.
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Pinhas Adar, MDT, CDT;David Garber, DMD;Fritz Kopp, DMD |
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| CE Hours: |
1 CEU (Continuing Education Unit) |
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