Micro-Computed Tomography Analysis of Fit of Ceramic Inlays Produced with Different CAD Software Programs

Purpose: The aim of this study was to evaluate marginal and internal fit of ceramic inlays designed with different computer-aided design software programs. Materials and Methods: 11 typodont mandibular first molars were prepared as a ceramic class II mesioocclusal inlay cavity. Teeth were scanned using 3Shape TRIOS Intraoral Dental Scanner. The scan data, which was obtained in the form of a STL file, was designed in three different CAD systems (CEREC, KaVo, and Planmeca). The obtained STL scan data was exported to design inlay using three different CAD systems (CEREC, KaVo, and Planmeca). An independent 5-axis milling unit was used to manufacture the feldspatic inlay restorations. 11 measurements for each teeth were made by using micro-ct to evaluate the marginal and internal fit. One-way ANOVA was used to determine the statistical difference between groups, and Tukey posthoc test was used to determine intra-group differences. Results: According to repeated ANOVA test results, a statistically significant difference was found between the groups for the variables A, D, and F. There was no statistically significant difference between the groups in linear measurements for other measurement points and volumetric measurements (p>0.05). Conclusion: Software programs of different systems affects the marginal and internal fit of inlay restorations.

Micro-Computed Tomography Inlay Restorations Internal Fit Computer-Aided Design Marginal Fit