Cargando…

Effect of Ozone and Two Common Denture Cleaners on Tensile Bond Strength and Surface Hardness of a Silicone Soft Liner

OBJECTIVES: To evaluate the effect of ozone and two common denture cleansers on the surface hardness and bond strength of a silicone-based soft liner to acrylic denture base material. MATERIALS AND METHODS: Sixty cylindrical specimens were fabricated using heat-cured poly-methyl methacrylate denture...

Descripción completa

Detalles Bibliográficos
Autores principales: Nakhaei, Mohammadreza, Mirmortazavi, Amirtaher, Ghanbari, Mansooreh, Ahmadi, Zahra
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Tehran University of Medical Sciences 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7040557/
https://www.ncbi.nlm.nih.gov/pubmed/32123875
http://dx.doi.org/10.18502/fid.v16i5.2280
_version_ 1783501014538649600
author Nakhaei, Mohammadreza
Mirmortazavi, Amirtaher
Ghanbari, Mansooreh
Ahmadi, Zahra
author_facet Nakhaei, Mohammadreza
Mirmortazavi, Amirtaher
Ghanbari, Mansooreh
Ahmadi, Zahra
author_sort Nakhaei, Mohammadreza
collection PubMed
description OBJECTIVES: To evaluate the effect of ozone and two common denture cleansers on the surface hardness and bond strength of a silicone-based soft liner to acrylic denture base material. MATERIALS AND METHODS: Sixty cylindrical specimens were fabricated using heat-cured poly-methyl methacrylate denture base resin. Three millimeters of the material was ground from the midsection and filled with the soft liner. The resilient liner specimens (n=40) used for the hardness test were 10 mm in diameter and 5 mm in height. Cylindrical and disc-shaped samples were randomly divided into four groups (37°C distilled water, Corega(®) tablets, 0.5% sodium hypochlorite (NaOCl), and a home ozone generator). To simulate six months of denture cleansing clinically, samples were placed in their cleanser once a day for six months according to the manufacturer’s instructions. All cylindrical specimens were placed under tension until failure in a universal testing machine at a crosshead speed of 5 mm/minute. For disc-shaped samples, hardness was measured using a Shore-A durometer. The results were analyzed using Kruskal-Wallis test, analysis of variance (ANOVA), and Tukey’s post hoc test. RESULTS: The mean tensile bond strength was not significantly different among the studied groups (P>0.05). The mean hardness in the ozone and Corega tablet groups was significantly lower than that of the control and NaOCl groups (P<0.05). CONCLUSION: The type of denture cleanser does not affect the tensile bond strength of silicone soft liners. Home ozone generators and cleansing tablets have less effect on the hardness of soft denture liners compared to 0.5% NaOCl.
format Online
Article
Text
id pubmed-7040557
institution National Center for Biotechnology Information
language English
publishDate 2019
publisher Tehran University of Medical Sciences
record_format MEDLINE/PubMed
spelling pubmed-70405572020-03-02 Effect of Ozone and Two Common Denture Cleaners on Tensile Bond Strength and Surface Hardness of a Silicone Soft Liner Nakhaei, Mohammadreza Mirmortazavi, Amirtaher Ghanbari, Mansooreh Ahmadi, Zahra Front Dent Original Article OBJECTIVES: To evaluate the effect of ozone and two common denture cleansers on the surface hardness and bond strength of a silicone-based soft liner to acrylic denture base material. MATERIALS AND METHODS: Sixty cylindrical specimens were fabricated using heat-cured poly-methyl methacrylate denture base resin. Three millimeters of the material was ground from the midsection and filled with the soft liner. The resilient liner specimens (n=40) used for the hardness test were 10 mm in diameter and 5 mm in height. Cylindrical and disc-shaped samples were randomly divided into four groups (37°C distilled water, Corega(®) tablets, 0.5% sodium hypochlorite (NaOCl), and a home ozone generator). To simulate six months of denture cleansing clinically, samples were placed in their cleanser once a day for six months according to the manufacturer’s instructions. All cylindrical specimens were placed under tension until failure in a universal testing machine at a crosshead speed of 5 mm/minute. For disc-shaped samples, hardness was measured using a Shore-A durometer. The results were analyzed using Kruskal-Wallis test, analysis of variance (ANOVA), and Tukey’s post hoc test. RESULTS: The mean tensile bond strength was not significantly different among the studied groups (P>0.05). The mean hardness in the ozone and Corega tablet groups was significantly lower than that of the control and NaOCl groups (P<0.05). CONCLUSION: The type of denture cleanser does not affect the tensile bond strength of silicone soft liners. Home ozone generators and cleansing tablets have less effect on the hardness of soft denture liners compared to 0.5% NaOCl. Tehran University of Medical Sciences 2019 2019-10-15 /pmc/articles/PMC7040557/ /pubmed/32123875 http://dx.doi.org/10.18502/fid.v16i5.2280 Text en Copyright© Dental Research Center, Tehran University of Medical Sciences This work is published as an open access article distributed under the terms of the Creative Commons Attribution 4.0 License (http://creativecommons.org/licenses/by-nc/4). Non-commercial uses of the work are permitted, provided the original work is properly cited.
spellingShingle Original Article
Nakhaei, Mohammadreza
Mirmortazavi, Amirtaher
Ghanbari, Mansooreh
Ahmadi, Zahra
Effect of Ozone and Two Common Denture Cleaners on Tensile Bond Strength and Surface Hardness of a Silicone Soft Liner
title Effect of Ozone and Two Common Denture Cleaners on Tensile Bond Strength and Surface Hardness of a Silicone Soft Liner
title_full Effect of Ozone and Two Common Denture Cleaners on Tensile Bond Strength and Surface Hardness of a Silicone Soft Liner
title_fullStr Effect of Ozone and Two Common Denture Cleaners on Tensile Bond Strength and Surface Hardness of a Silicone Soft Liner
title_full_unstemmed Effect of Ozone and Two Common Denture Cleaners on Tensile Bond Strength and Surface Hardness of a Silicone Soft Liner
title_short Effect of Ozone and Two Common Denture Cleaners on Tensile Bond Strength and Surface Hardness of a Silicone Soft Liner
title_sort effect of ozone and two common denture cleaners on tensile bond strength and surface hardness of a silicone soft liner
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7040557/
https://www.ncbi.nlm.nih.gov/pubmed/32123875
http://dx.doi.org/10.18502/fid.v16i5.2280
work_keys_str_mv AT nakhaeimohammadreza effectofozoneandtwocommondenturecleanersontensilebondstrengthandsurfacehardnessofasiliconesoftliner
AT mirmortazaviamirtaher effectofozoneandtwocommondenturecleanersontensilebondstrengthandsurfacehardnessofasiliconesoftliner
AT ghanbarimansooreh effectofozoneandtwocommondenturecleanersontensilebondstrengthandsurfacehardnessofasiliconesoftliner
AT ahmadizahra effectofozoneandtwocommondenturecleanersontensilebondstrengthandsurfacehardnessofasiliconesoftliner