Resin microtensile bond strength to feldspathic ceramic: hydrofluoric acid etching vs. tribochemical silica coating.

Fernanda Pelógia, Luiz Felipe Valandro, Vinicius Brigagão, Maximiliano Piero Neisser, Marco A Bottino

Journal: The International journal of prosthodontics 2007;20(5):532-4

PMID: 17944345

Abstract

This study aimed to compare the microtensile bond strength of resin cement to alumina-reinforced feldspathic ceramic submitted to acid etching or chairside tribochemical silica coating. Ten blocks of Vitadur-alpha were randomly divided into 2 groups according to conditioning method: (1) etching with 9.6% hydrofluoric acid or (2) chairside tribochemical silica coating. Each ceramic block was luted to the corresponding resin composite block with the resin cement (Panavia F). Next, bar specimens were produced for microtensile testing. No significant difference was observed between the 2 experimental groups (Student ttest, P > .05). Both surface treatments showed similar microtensile bond strength values.

Address: São Jose dos Campos Dental School, São Paulo State University, Brazil.

MeSH Terms: Acid Etching, Dental, Air Abrasion, Dental, Aluminum Silicates, Composite Resins, Dental Bonding, Dental Porcelain, Dental Stress Analysis, Potassium Compounds, Resin Cements, Silanes, Silicon Dioxide, Tensile Strength