Deproteinization of primary enamel with sodium hypochlorite before phosphoric acid etching
Acta odontol. latinoam; 32 (1), 2019
Publication year: 2019
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 AAcid Etching with 37% H3PO4 gel for 15 s; Group B5% NaOCl for 60 s + Acid Etching with 37% H3PO4for 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 KolgomorvSmirnov test and the nonparametric unpaired MannWhitney 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 (AU)
El objetivo del estudio fue evaluar la desproteinización del
esmalte primario a través de los tipos de patrones de grabado,
con y sin NaOCl 5% utilizado antes del grabado ácido con
H3PO4 37%. Quince dientes primarios humanos extraídos se
seleccionaron al azar para el presente estudio in vitro, se
prepararon bloques de 1mm x 1 mm y se dividieron en dos
grupos (n = 21).