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Volume 14
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10.3390/ma14123215
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Article

Resistance to Fracture of Lithium Disilicate Feldspathic Restorations Manufactured Using a CAD/CAM System and Crystallized with Different Thermal Units and Programs

by
Cristian Abad-Coronel
1,*,
Andrea Ordoñez Balladares
2,
Jorge I. Fajardo
3 and
Benjamín José Martín Biedma
4
1
Faculty of Dentistry, Universidad de Cuenca, 010107 Cuenca, Ecuador
2
Faculty of Dentistry, Universidad de Guayaquil, 090514 Guayaquil, Ecuador
3
Mechanical Enginnering Faculty, Universidad Politécnica Saleciana, 170517 Cuenca, Ecuador
4
Faculty of Dentistry, Universidad de Santiago de Compostela, 15782 Galicia, Spain
*
Author to whom correspondence should be addressed.
Materials 2021, 14(12), 3215; https://doi.org/10.3390/ma14123215
Submission received: 12 May 2021 / Revised: 8 June 2021 / Accepted: 9 June 2021 / Published: 10 June 2021
(This article belongs to the Special Issue Current and Future Trends in Dental Materials)
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Abstract

The aim of this study was to determine the resistance to fracture of feldspathic restorations with lithium disilicate and crystallized with different ovens and programs. Methods: Sixty monolithic restorations (LD) (EMAX CAD™ LT, Ivoclar-Vivadent™) were designed with the same parameters and milled with a CAD/CAM system (CEREC SW 5.1, CEREC MCXL, Dentsply-Sirona™, Bensheim). Each restoration was randomly assigned by randomization software (RANDNUM) to one of the three groups: (a) (NF) Oven P310 (Ivoclar, Vivadent) normal crystallization program, (b) (FF) Ivoclar P310 oven (Ivoclar-Vivadent™) rapid crystallization program, or (c) (SF) SpeedFire oven (Dentsply-Sirona™). Results: There were statistically significant differences between the groups (ANOVA, p < 0.05). The NF and FF groups showed the highest values of resistance to fracture, with statistically significant differences with the SF group. Conclusions: Using a furnace from the same dental company with predetermined programs from the material manufacturer, as well as using a predetermined program for rapid crystallization, has no effect on fracture resistance, and would save clinical time when performing ceramic restorations with lithium disilicate, while keeping their mechanical properties.
Keywords: lithium disilicate; crystallization; fracture; CAD/CAM materials lithium disilicate; crystallization; fracture; CAD/CAM materials

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MDPI and ACS Style

Abad-Coronel, C.; Ordoñez Balladares, A.; Fajardo, J.I.; Martín Biedma, B.J. Resistance to Fracture of Lithium Disilicate Feldspathic Restorations Manufactured Using a CAD/CAM System and Crystallized with Different Thermal Units and Programs. Materials 2021, 14, 3215. https://doi.org/10.3390/ma14123215

AMA Style

Abad-Coronel C, Ordoñez Balladares A, Fajardo JI, Martín Biedma BJ. Resistance to Fracture of Lithium Disilicate Feldspathic Restorations Manufactured Using a CAD/CAM System and Crystallized with Different Thermal Units and Programs. Materials. 2021; 14(12):3215. https://doi.org/10.3390/ma14123215

Chicago/Turabian Style

Abad-Coronel, Cristian, Andrea Ordoñez Balladares, Jorge I. Fajardo, and Benjamín José Martín Biedma. 2021. "Resistance to Fracture of Lithium Disilicate Feldspathic Restorations Manufactured Using a CAD/CAM System and Crystallized with Different Thermal Units and Programs" Materials 14, no. 12: 3215. https://doi.org/10.3390/ma14123215

APA Style

Abad-Coronel, C., Ordoñez Balladares, A., Fajardo, J. I., & Martín Biedma, B. J. (2021). Resistance to Fracture of Lithium Disilicate Feldspathic Restorations Manufactured Using a CAD/CAM System and Crystallized with Different Thermal Units and Programs. Materials, 14(12), 3215. https://doi.org/10.3390/ma14123215

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