Effect of Hydrofluoric Acid Concentration on Bond Strength to Glass-Ceramics: A Systematic Review and Meta-Analysis of In-Vitro Studies

• Published in: The journal of adhesive dentistry 2023-11, Vol.25, p.231
• Main Authors: Araújo-Neto, Vitaliano Gomes de, Nobre, Caio Felipe de Almeida, Freitas, Mariana Itaborai Moreira, Lima, Renally Bezerra Wanderley, Sinhoreti, Mario Alexandre Coelho, Del Bel Cury, Altair Antoninha, Giannini, Marcelo
• Format: Article
• Language: English
• Subjects: Acid Etching, Dental; Adhesive Dentistry; Ceramics - chemistry; Dental Bonding; Dental Porcelain - chemistry; Hydrofluoric Acid - chemistry; Materials Testing; Resin Cements - chemistry; Surface Properties
• ISSN: 1757-9988; 1461-5185; 1757-9988
• DOI: 10.3290/j.jad.b4646943

To conduct a systematic review and meta-analysis of in-vitro bond strength to glass-ceramics using hydrofluoric acid (HF) at lower (5%) concentrations ([HF]) to treat ceramic surfaces. Systematic searches were carried out in PubMed, Scopus, LILACS, and Web of Science for articles published through July 2021, and a meta-analysis was performed to estimate the combined effect by comparing the differences between the standardized means of the bond strengths of the evaluated materials. In total, 943 articles were found, of which 17 studies were selected for qualitative analysis and 12 for quantitative analysis. The bond strength to glass-ceramics using 4% to 5% HF did not differ from that using 7% to 10% HF for the following HF etching times and glass-ceramic materials: 20 s for lithium-disilicate (Z = 0.65, p = 0.51), 60 s for feldspathic (Z = 0.53, p = 0.60), and 60 s for leucite (Z = 0.72, p = 0.35). The lower concentration HF (