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Updated: May 23, 2026

Quasistatic Mechanical Testing for Computer-Aided Design and Manufacturing Occlusal Veneers Cemented to Milled Dentin Analog Material
Published on: December 20, 2024
Evaluation of marginal fit of two all-ceramic copings with two finish lines
Gulce Subasi1, Nilgun Ozturk, Ozgur Inan
1Department of Prosthetic Dentistry, Faculty of Dentistry, Selcuk University, Konya, TURKIYE.
Objectives:
This in-vitro study investigated the marginal fit of two all-ceramic copings with 2 finish line designs.
Methods:
Forty machined stainless steel molar die models with two different margin designs (chamfer and rounded shoulder) were prepared. A total of 40 standardized copings were fabricated and divided into 4 groups (n=10 for each finish line-coping material). Coping materials tested were IPS e.max Press and Zirkonzahn; luting agent was Variolink II. Marginal fit was evaluated after cementation with a stereomicroscope (Leica MZ16). Two-way analysis of variance and Tukey-HSD test were performed to assess the influence of each finish line design and ceramic type on the marginal fit of 2 all-ceramic copings (α =.05).
Results:
Two-way analysis of variance revealed no statistically significant differences for marginal fit relative to finish lines (P=.362) and ceramic types (P=.065).
Conclusion:
Within the limitations of this study, both types of all-ceramic copings demonstrated that the mean marginal fit was considered acceptable for clinical application (⩽120 μm).
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