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Updated: Jun 11, 2026
Quasistatic Mechanical Testing for Computer-Aided Design and Manufacturing Occlusal Veneers Cemented to Milled Dentin Analog Material
Published on: December 20, 2024
In vitro evaluation of marginal adaptation in five ceramic restoration fabricating techniques
Cağri Ural1, Yavuz Burgaz, Duygu Saraç
1Department of Prosthodontics, Faculty of Dentistry, University of Ondokuz Mayis, Samsun, Turkey. cagriural@omu.edu.tr
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.