Comparative Evaluation of the Effect of Electrolyzed Oxidizing Water on Surface Detail Reproduction, Dimensional Stability and Surface Texture of Poly Vinyl Siloxane Impressions

Overview

Journal J Indian Prosthodont Soc

Specialty Dentistry

Date 2019 Feb 13

PMID 30745752

Citations 5

Authors

A S Mahalakshmi

Vidhya Jeyapalan

Vallabh Mahadevan

Chitra Shankar Krishnan

N S Azhagarasan

Hariharan Ramakrishnan

Affiliations

Soon will be listed here.

Abstract

Aim: The aim of this study was to comparatively evaluate the effect of chemical disinfectants on the surface detail reproduction, dimensional stability and surface texture of polyvinyl siloxane (PVS) impressions.

Materials And Methods: The impressions were then divided into five groups (fifteen samples per group) and subjected to a ten minutes immersion with 2% glutaraldehyde (Group I), 1% sodium hypochlorite (Group II), freshly prepared electrolyzed oxidizing water (EOW) with different pH values - acidic (Group III), alkali (Group IV) and neutral (Group V). The samples were examined pre and post-immersion under visual observation for surface detail reproduction, travelling microscope for measurement of dimensional stability and surface profilometer (3D) for evaluation of surface texture. A standardized master die was fabricated and seventy-five PVS test samples were made. The samples were subjected to immersion disinfection and studied for surface detail reproduction, dimensional stability and surface texture. test, paired test and ANOVA were used to analyze dimensional stability statistically both within and between the test groups.

Results: The surface detail reproduction was satisfactory with both pre and post-immersion test samples. A statistically significant dimensional change was observed post-immersion in Groups II, III and V test samples and a statistically insignificant dimensional change was observed in Groups I and IV test samples. There was a negligible change in surface texture post-immersion in Groups I, III, IV and V test samples with a slight increase in surface roughness post-immersion in Group II samples.

Conclusion: In this study, all the test disinfectants produced satisfactory surface detail reproduction on Polyvinyl siloxane impressions. 2% glutaraldehyde and electrolyzed oxidizing water (alkali) have resulted in statistically insignificant dimensional change, while 1% sodium hypochlorite, electrolyzed oxidizing water (acidic) and electrolyzed oxidizing water (neutral) have resulted in statistically significant dimensional changes. All the test disinfectants except 1% sodium hypochlorite showed a reduction in surface roughness (Ra) values.

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