Efecto del grabado con ácido fluorhídrico en porcelanas feldespáticas. Revisión sistemática.

Abstract

Introduction: Aesthetic ceramics restorations are in high demand, it is considered a biomimetic material in cases where it is desired to replace large amounts of dental tissue since it has a capacity to imitate and restore the rigidity of the crown, which are made up of a glass phase and another phase of crystals, among the basic components are feldspar, quartz and kaolin. Objective: To determine the effect of etching with hydrofluoric acid at different concentrations and etching times. Methodology: A selection of 400 scientific articles was made, of which 30 articles were included for the final work. These articles were in English/Spanish were in the 2004-2021 range and quartile 1,2,3. Results: 26 articles agreed that the ideal etching time is 120 seconds, 28 articles found that the ideal hydrofluoric acid concentration is 10%, in the conditioning protocol we have that the standard protocol for cementing feldspar ceramic restorations requires 9.6% hydrofluoric acid etching for 120 seconds and treatment with silane on the surface of the porcelain gave the best result in flexural strength between 72.9 to 84.9 MPa. Conclusion: The results of this study indicated that the ideal percentage of hydrofluoric acid concentration for etching feldspar ceramics is 10% for 90 seconds, these porcelains are an ideal substrate for HF conditioning.