PMID: 26329406Sep 4, 2015Paper

Effect of Collagen Matrix Saturation on the Surface Free Energy of Dentin using Different Agents

The Journal of Contemporary Dental Practice
Leopoldina de Fátima Dantas de AlmeidaJ Hebling

Abstract

The surface free energy of conditioned-dentin is one of the factors that interfere with monomeric infiltration of the interfibrillar spaces. Saturation of the tooth matrix with different substances may modulate this energy and, consequently, the wettability of the dentin. To evaluate the influence of different substances used to saturate conditioned-dentin on surface free energy (SFE) of this substrate. Dentin blocks (4 × 7 × 1 mm, n = 6/ group), obtained from the roots of bovine incisors, were etched using phosphoric acid for 15 seconds, rinsed and gently dried. The surfaces were treated for 60 seconds with: ultra-purified water (H20-control); ethanol (EtOH), acetone (ACT), chlorhexidine (CHX), ethylenediaminetetraacetic acid (EDTA); or sodium hypochlorite (NaOCl). The tooth surfaces were once again dried with absorbent paper and prepared for SFE evaluation using three standards: water, formamide and bromonaphthalene. Analysis of variance (ANOVA) and Dunnet's tests (a = 0.05) were applied to the data. Ethylenediaminetetraacetic acid was the only substance that caused a change to the contact angle for the standards water and formamide, while only EtOH influenced the angles formed between formamide and the dentin surface. None o...Continue Reading

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Jul 14, 2017·Frontiers in Physiology·Mariana Dos Reis LimaPaula Goes
Feb 8, 2018·Brazilian Oral Research·Bruna GenariFabrício Mezzomo Collares

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