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Quintessence Publishing: Journals: QI
Quintessence International

Edited by Eli Eliav

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

July/August 2010
Volume 41 , Issue 7

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In Vitro Evaluation Of Marginal Adaptation In Five Ceramic Restoration Fabricating Techniques

Cagrı Ural, DDS, PhD/Yavuz Burgaz, DDS, PhD/Duygu Sarac, DDS, PhD

Pages: 585-590
PMID: 20614046

Objective: To compare in vitro the marginal adaptation of crowns manufactured using ceramic restoration fabricating techniques. Method and Materials: Fifty standardized master steel dies simulating molars were produced and divided into five groups, each containing 10 specimens. Test specimens were fabricated with CAD/CAM, heat-press, glass-infiltration, and conventional lost-wax techniques according to manufacturer instructions. Marginal adaptation of the test specimens was measured vertically before and after cementation using SEM. Data were statistically analyzed by one-way ANOVA with Tukey HSD tests (a = .05). Results: Marginal adaptation of ceramic crowns was affected by fabrication technique and cementation process (P < .001). The lowest marginal opening values were obtained with Cerec-3 crowns before and after cementation (P < .001). The highest marginal discrepancy values were obtained with PFM crowns before and after cementation. Conclusion: Marginal adaptation values obtained in the compared systems were within clinically acceptable limits. Cementation causes a significant increase in the vertical marginal discrepancies of the test specimens. (Quintessence Int 2010;41:585-590)

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