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

Vitaliano Gomes de Araújo-Neto, Caio Felipe de Almeida Nobre, Mariana Itaborai Moreira Freitas, Renally Bezerra Wanderley Lima, Mario Alexandre Coelho Sinhoreti, Altair Antoninha Del Bel Cury, Marcelo Giannini
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Abstract

Purpose: To conduct a systematic review and meta-analysis of in-vitro bond strength to glass-ceramics using hydrofluoric acid (HF) at lower (<5%) and higher (>5%) concentrations ([HF]) to treat ceramic surfaces.

Methods: 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.

Results: 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).

Conclusion: The lower concentration HF (<5%) etchant is a reliable surface treatment for adhesive bonding to glass-ceramics with satisfactory bond strength in short-term evaluations.

氢氟酸浓度对微晶玻璃粘结强度的影响:体外研究的系统回顾和荟萃分析
目的:对较低(5%)浓度([HF])氢氟酸(HF)处理陶瓷表面与微晶玻璃的体外结合强度进行系统回顾和荟萃分析。方法:系统检索PubMed、Scopus、LILACS和Web of Science中截至2021年7月发表的文章,并进行meta分析,通过比较评估材料粘合强度标准化均值之间的差异来估计综合效应。结果:共检索到943篇文献,其中定性分析17篇,定量分析12篇。在以下HF蚀刻时间和玻璃陶瓷材料中,使用4%至5% HF与使用7%至10% HF的玻璃陶瓷的结合强度没有差异:二硅酸锂(Z = 0.65, p = 0.51) 20 s,长石(Z = 0.53, p = 0.60) 60 s,白晶石(Z = 0.72, p = 0.35) 60 s。结论:低浓度HF (
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