Tecnología en Mecánica Dental
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Browsing Tecnología en Mecánica Dental by Subject "adaptación marginal"
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Item Estudio comparativo de sellado marginal entre coronas cad/cam e impresión 3d/inyección en disilicato de litio upcera(Universidad Santiago de Cali, 2024) Patiño Lizalda, Karen Melissa; Obando Bravo, OscarIntroduction: The quality and effectiveness of seals not only impacts on the durability of restorations, but also on the long-term oral health of patients, which is why the need to rethink current techniques arises, to identify the effectiveness of these. Objective: To compare the marginal sealing of CAD-CAM and printed 3D-Injection crowns in lithium disilicate to find the one with the least maladaptation. Method: A crown was designed for molar, which was replicated 10 times for 3D printing in castable resin (intended for 3D Injection printing manufacturing technique) and 10 times more for milling (intended for CAD-CAM manufacturing technique) for a total sample of 20 crowns. Lithium disilicate from the commercial house UPCERA (UPPRESS and UPCAD) was used as a test material. The marginal seal analysis of the crowns was performed by stereomicroscope; 4 measurements were taken on each face of the crown for a total of 16 measurements per crown. Result: There are no statistically significant differences, as the t-student test 3 (P=0.493) showed. Conclusions: The CAD-CAM manufacturing technique presents less marginal maladaptation with an average misadaptation of 130 μm with a difference of 2 points compared to the 3D-Injection printing technique, which presents an average maladaptation of 132 μm.