Influence of simulated gastric juice on surface characteristics of CAD-CAM monolithic materials

The Journal of Prosthetic Dentistry
Marlon E M CruzRenata Garcia Fonseca

Abstract

How the surfaces of monolithic esthetic restorations behave in the presence of acidic substances is unclear. The purpose of this in vitro study was to evaluate the effect of simulated gastric juice on roughness, morphology, microhardness, substance loss, and color change of computer-aided design and computer-aided manufacturing (CAD-CAM) monolithic materials. Disks from Lava Ultimate, VITA ENAMIC, IPS e.max CAD, and VITA SUPRINITY were analyzed for roughness, morphology, and microhardness by using a confocal microscope, scanning electron microscope (SEM), and Vickers hardness tester. Substance loss was determined by weighing the specimens on an analytical balance, and color change (ΔE) was assessed by using a spectrophotometer based on the CIELab parameters. All analyses were carried out before and after acid exposure. Acid exposure significantly decreased the roughness, having a very high effect size on this property. The material was highly decisive in determining the microhardness, presenting the following order: VITA SUPRINITY>IPS e.max CAD>VITA ENAMIC>Lava Ultimate. The mass was not significantly affected by the acidic challenge. No significant difference in ΔE was found between Lava Ultimate and VITA ENAMIC and between IP...Continue Reading

Citations

Aug 20, 2020·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·Mohammad D Al AmriJeffrey A Platt
Apr 13, 2021·Journal of the Mechanical Behavior of Biomedical Materials·Hui YangHao Yu
Aug 4, 2021·International Journal of Dentistry·Elham FarhadiLadan Ranjbar Omrani

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