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Quintessence Publishing: Journals: QI
Quintessence International

Edited by Eli Eliav

ISSN 0033-6572 (print) • ISSN 1936-7163 (online)

November/December 2012
Volume 43 , Issue 10

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Comparison of two different veneer preparation designs in vital teeth

Ulrike Stephanie Beier, MSc, DMD/Matilda Dhima, DMD/Sreenivas Koka, DDS, MS, PhD/Thomas J. Salinas, DDS/ Herbert Dumfahrt, MD, DMD, PhD

Pages: 835-839
PMID: 23115761

Objective: To compare the clinical performance of two different veneer preparation designs (overlap and nonoverlap) on anterior veneer restorations in vital teeth in a retrospective clinical study. Method and Materials: In this study, 292 anterior all-ceramic veneer restorations in vital teeth were clinically examined in 74 patients. The preparation designs were categorized by the amount of tooth reduction on the final casts, with 245 in the overlap and 47 nonoverlap group. Results: After a mean SD observation time of 124.25 60.61 months, 20 failures occurred. All failures occurred in the overlap design. Restorations with nonoverlap preparation designs showed significantly fewer failures than restorations with overlap preparation design (P = .018, log-rank). Conclusion: Based on the findings of this study, whenever feasible, a preparation design without incisal overlap is recommended, especially in vital teeth. (Quintessence Int 2012;43:835839)

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