Investigation of the Clinical Outcomes of Endocrowns Manufactured from Three Different Materials Using 3D Printing and CAD-CAM Technology in Teeth with Completed Root Canal Treatment
Project no. 29569 · Status: Kapanmış (Yayın bekleniyor) · 2023
Summary
<p><strong>Aim: </strong>The aim of this prospective and in-vivo study is to investigate the ability of endocrowns, produced using different materials and manufacturing techniques based on a fully digital workflow, to remain in the oral cavity without functional and aesthetic degradation.</p><p><strong>Materials and Methods: </strong>Based on the power analysis, it was decided to apply restorations to 11 teeth in each of the three material groups (leucite-reinforced glass ceramic, polymer-infiltrated ceramic, 3D-printed permanent hybrid resin) as well as the control group (n=11). In total, 33 endocrowns were applied. Eleven patients with MOD (mesio-occluso-distal) cavities were directly restored with composite resin in molar teeth</p><p>The digital impressions of the patients who received restorations were recorded using an intraoral optical scanner. After the completion of the designs, block milling was performed for two groups (leucite-reinforced glass ceramic, polymer-infiltrated ceramic), while 3D printing technique was used for one group (permanent hybrid resin). Following adhesive cementation, the initial and 6-month follow-up conditions were recorded using the Modified FDI and Modified USPHS evaluation criteria. The data were analyzed using the Chi-square and McNemar's test.</p><p><strong>Results: </strong>At the 6-month follow-up, no statistically significant difference was observed in any of the Modified USPHS criteria. However, a statistically significant difference was found in the color matching among the groups according to the Modified FDI criteria (0.035). The difference in color matching was attributed to the permanent hybrid resin restorations, which were similar to the control group</p><p><strong>Conclusion:</strong> Regardless of the material and method, all endocrown restorations survived and were found to be clinically successful at the 6-month follow-up. The hybrid composite resin material produced using the 3D printing method, which was evaluated for the first time clinically, showed a visible color change. However, further long-term clinical studies are needed</p>