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CC BY-NC-ND 4.0 · European Journal of General Dentistry 2014; 3(02): 113-119
DOI: 10.4103/2278-9626.134835
Original Article

Effect of disinfection of irreversible hydrocolloid impression materials with 1% sodium hypochlorite on surface roughness and dimensional accuracy of dental stone casts

Andressa Rodrigues Dorner
Department of Dental Materials and Prosthesis, São José dos Campos School of Dentistry of the São Paulo State University, São José dos Campos, São Paulo, Brazil
,
João Maurício Ferraz da Silva
Department of Dental Materials and Prosthesis, São José dos Campos School of Dentistry of the São Paulo State University, São José dos Campos, São Paulo, Brazil
,
Eduardo Shigueyuki Uemura
Department of Dental Materials and Prosthesis, São José dos Campos School of Dentistry of the São Paulo State University, São José dos Campos, São Paulo, Brazil
,
Alexandre LuizSouto Borges
Department of Dental Materials and Prosthesis, São José dos Campos School of Dentistry of the São Paulo State University, São José dos Campos, São Paulo, Brazil
,
Virgilio Vilas Boas Fernandes Junior
Department of Dental Materials and Prosthesis, São José dos Campos School of Dentistry of the São Paulo State University, São José dos Campos, São Paulo, Brazil
,
Eron Toshio Colauto Yamamoto
1   Department of Dental Materials and Prosthesis, School of Dentistry, São Paulo, Brazil
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Abstract

Aim: The aim of this study was to evaluate the effect of disinfection of commercially available irreversible hydrocolloid impression materials with 1% sodium hypochlorite on the surface roughness and dimensional accuracy of dies produced using type IV dental stone. Materials and Methods: Four different brands of irreversible hydrocolloid impression materials were used as follows: Jeltrate Plus without disinfection (GJ), Jeltrate Plus with disinfection (GJD), Hydrogum without disinfection (GH), Hidrogun with disinfection (GHD), Hidrogum 5 Days without disinfection (GH5), Hidrogum 5 Days with disinfection (GH5D), Cavex without disinfection (GC), and Cavex with disinfection (GCD). A total of 80 dies were poured using type IV dental stone and their mean surface roughness was evaluated using rugosimeter (Mitutoyo SJ-400). To conduct the dimensional alteration analysis, type IV dental stone casts were obtained from a matrix made of chemically-activated resin. They were analyzed in a coordinate-measuring machine (Brown and Sharpe). Statistics Analysis: Numerical data were analyzed using analysis of variance (ANOVA) with Tukey′s post hoc test at 5% confi dence interval. Results: Hidrogun 5 Days and Cavex showed the least surface roughness value even after 5 days. There were no significant differences in the dimensional alteration of Jeltrate (GJ and GJD) and Hidrogum (GH and GHD) in relation to the “new brands” Hidrogum 5 (GH5 and GH5D) and Cavex (GC and GCD), even after 5 days of storage. Conclusion: Considering the results obtained, it can be concluded that there was a roughness increase in the die stones poured from irreversible hydrocolloids disinfected with sodium hypochlorite.

Keywords

Dental stone - dimensional alteration - irreversible hydrocolloid - surface roughness


Publication History

Article published online:
01 November 2021

© 2014. European Journal of General Dentistry. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial-License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/.)

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