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Investigation of five ?-hydroxy acids for enamel and dentin etching: Demineralization depth, resin adhesion and dentin enzymatic activity.


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 ?-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 (?z), the resin bond strength to enamel and dentin (?TBS), 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 (??=?0.05). RESULTS:AHA exhibited statistically lower depth of demineralization of enamel and dentin (average 4 fold) than controls (p?

SUBMITTER: Trevelin LT 

PROVIDER: S-EPMC6513690 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature

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Investigation of five α-hydroxy acids for enamel and dentin etching: Demineralization depth, resin adhesion and dentin enzymatic activity.

Trevelin Lívia Tosi LT   Villanueva Jose J   Zamperini Camila A CA   Mathew Mathew T MT   Matos Adriana Bona AB   Bedran-Russo Ana K AK  

Dental materials : official publication of the Academy of Dental Materials 20190408 6


<h4>Objectives</h4>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.<h4>Methods</h4>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 i  ...[more]

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