SciELO - Scientific Electronic Library Online

vol.32 issue1Evaluation of 3Mix-MP and pulpectomies in non-vital primary molarsSubgingival microbiological profile of periodontitis patients in Dominican Republic author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




  • Have no cited articlesCited by SciELO

Related links

  • Have no similar articlesSimilars in SciELO


Acta Odontológica Latinoamericana

On-line version ISSN 1852-4834


LOPEZ-LUJAN, Nieves A et al. Deproteinization of primary enamel with sodium hypochlorite before phosphoric acid etching. Acta odontol. latinoam. [online]. 2019, vol.32, n.1, pp.29-35. ISSN 1852-4834.

The aim of this study was to evaluate the deproteinization of primary enamel by analyzing etching pattern types, with and without the application of 5% NaOCl before acid etching with 37% H3PO4. Fifteen extracted human primary molars were randomly selected for the present in vitro study; 1mm x 1mm blocks were prepared and divided into two groups (n = 21). These groups were treated as follows: Group A- Acid Etching with 37% H3PO4 gel for 15 s; Group B- 5% NaOCl for 60 s + Acid Etching with 37% H3POfor 15 s. The specimens were prepared for scanning electron microscopy analysis. The images were evaluated for quality types I and II etching of the enamel surface using ImageJ software. Datasets were checked for normality by Kolgomorv-Smirnov test and the nonparametric unpaired Mann-Whitney test was applied. The mean surface area of type I and II etching pattern values was 1922.314 µm2for Group A and 3840.473 µm2Group B. We conclude that deproteinization with 5% NaOCl prior to acid etching can be used to increase the area of adhesion and the quality of the etching pattern.

Keywords : Dental enamel, tooth, deciduous, dental etching, sodium hypochlorite.

        · abstract in Spanish     · text in English     · English ( pdf )


Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License