1. Investigation of five α-hydroxy acids for enamel and dentin etching: Demineralization depth, resin adhesion and dentin enzymatic activity
- Author
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Ana K. Bedran-Russo, Mathew T. Mathew, Adriana Bona Matos, Camila Andrade Zamperini, Lívia Tosi Trevelin, and Jose Villanueva
- Subjects
Molar ,Materials science ,02 engineering and technology ,Article ,03 medical and health sciences ,0302 clinical medicine ,stomatognathic system ,Etching (microfabrication) ,Tensile Strength ,Materials Testing ,Dentin ,medicine ,Humans ,Phosphoric Acids ,General Materials Science ,Dental Enamel ,General Dentistry ,Enamel paint ,Bond strength ,Dental Bonding ,030206 dentistry ,Adhesion ,021001 nanoscience & nanotechnology ,Resin Cements ,Demineralization ,stomatognathic diseases ,medicine.anatomical_structure ,Mechanics of Materials ,Dentin-Bonding Agents ,visual_art ,visual_art.visual_art_medium ,Adhesive ,Hydroxy Acids ,0210 nano-technology ,Nuclear chemistry - Abstract
OBJECTIVES: Surface conditioning of enamel and dentin is a key step during adhesive restorative procedures and strategies. The aim of this study was to investigate the effectiveness of five α-hydroxy-acids (AHAs) as enamel and dentin surface etchants. METHODS: Enamel and dentin specimens were prepared from human molars to determine the depth of demineralization by optical profilometry (Δz), the resin bond strength to enamel and dentin (μTBS), the micro-permeability of dentin-resin interfaces, and the gelatinolytic activity of dentin matrix induced by AHAs [glycolic (GA), lactic (LA), citric (CA), malic (MI) and tartaric (TA)] and controls [phosphoric (PA) and maleic (MA)]. All acids were prepared at 35% concentration. Adhesion studies employed Adper Single Bond Plus bonding system. Data were individually processed and analyzed by ANOVA, post-hoc tests and Pearson correlations (α=0.05). RESULTS: AHA exhibited statistically lower depth of demineralization of enamel and dentin (average 4 fold) than controls (p
- Published
- 2019