Abad-Coronel, C.; Paladines, Á.; Ulloa, A.L.; Paltán, C.A.; Fajardo, J.I. Comparative Fracture Resistance Analysis of Translucent Monolithic Zirconia Dioxide Milled in a CAD/CAM System. Ceramics2023, 6, 1179-1190.
Abad-Coronel, C.; Paladines, Á.; Ulloa, A.L.; Paltán, C.A.; Fajardo, J.I. Comparative Fracture Resistance Analysis of Translucent Monolithic Zirconia Dioxide Milled in a CAD/CAM System. Ceramics 2023, 6, 1179-1190.
Abad-Coronel, C.; Paladines, Á.; Ulloa, A.L.; Paltán, C.A.; Fajardo, J.I. Comparative Fracture Resistance Analysis of Translucent Monolithic Zirconia Dioxide Milled in a CAD/CAM System. Ceramics2023, 6, 1179-1190.
Abad-Coronel, C.; Paladines, Á.; Ulloa, A.L.; Paltán, C.A.; Fajardo, J.I. Comparative Fracture Resistance Analysis of Translucent Monolithic Zirconia Dioxide Milled in a CAD/CAM System. Ceramics 2023, 6, 1179-1190.
Abstract
The aim of this study was to evaluate and compare the fracture resistance of definitive zirconia dioxide restorations obtained using a computer-aided design and manufacturing (CAD/CAM) system. Methods: Two groups of ten samples were analyzed for each material (n: 20), the first group was Zolid Gen X Amann Girrbach (ZGX) and the second group was Cercon HT Dentsply Sirona (CDS). The restorations were designed with identical parameters and milled with a CAD/CAM system. Each specimen was load tested at a speed of 0.5 mm/min with a direction parallel to the major axis of the tooth and with an initial preload of 10N until fracture using a universal testing machine (Universal/Tensile Testing Machine, Autograph AGS-X Series) equipped with a 20 kN load cell. The results obtained were recorded in Newtons (N), using software connected to the testing machine. Results: Statistically significant differences were found, and the fracture toughness of the monolithic zirconia crowns was lower in the CDS group (1744.84 ± 172.8 N), compared to the ZGX group (2387.41 ± 516 N). Conclusions: The monolithic zirconia CAD-CAM zirconia crowns showed sufficient fracture strength to be used in posterior molar and premolar zones with either material as they withstood fracture loads greater than the maximum masticatory force.
Medicine and Pharmacology, Dentistry and Oral Surgery
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