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Dissolving efficacy of different organic solvents on gutta-percha and resilon root canal obturating materials at different immersion time intervals

BACKGROUND AIM: The purpose of this study was to compare and evaluate the dissolving capability of various endodontic solvents used during endodontic retreatment on resilon and gutta-percha at different immersion time intervals. MATERIALS AND METHODS: 160 ISO no. 40 cones (0.06 taper), 80 each of re...

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Autores principales: Mushtaq, Mubashir, Farooq, Riyaz, Ibrahim, Mohammed, Khan, Fayiza Yaqoob
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Medknow Publications & Media Pvt Ltd 2012
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3339008/
https://www.ncbi.nlm.nih.gov/pubmed/22557812
http://dx.doi.org/10.4103/0972-0707.94584
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author Mushtaq, Mubashir
Farooq, Riyaz
Ibrahim, Mohammed
Khan, Fayiza Yaqoob
author_facet Mushtaq, Mubashir
Farooq, Riyaz
Ibrahim, Mohammed
Khan, Fayiza Yaqoob
author_sort Mushtaq, Mubashir
collection PubMed
description BACKGROUND AIM: The purpose of this study was to compare and evaluate the dissolving capability of various endodontic solvents used during endodontic retreatment on resilon and gutta-percha at different immersion time intervals. MATERIALS AND METHODS: 160 ISO no. 40 cones (0.06 taper), 80 each of resilon and gutta-percha were taken as samples for the study. Both resilon and gutta-percha were divided into eight experimental groups of 20 cones (four groups each of resilon and gutta-percha) for immersion in xylene, tetrachloroethylene, refined orange oil and distilled water. Each group was further divided into two equal subgroups (n=10) for 2- and 5-minute immersion time intervals at room temperature to investigate the potential of these solvents for clinical use in dissolving resilon and gutta-percha. Each sample was weighed initially before immersing in the solvent on a digital analytical scale. Distilled water served as a control. Samples were removed from the respective solvents after the specified immersion period and washed in 100 ml of distilled water and allowed to dry for 24 h at 37°C in a humidifier. The samples were then again weighed after immersion in the specific solvent on a digital analytical scale. The extent of gutta-percha or resilon removed from the specimen was calculated from the difference between the original weight of gutta-percha or resilon sample and its final weight. Means and standard deviations of percentage loss of weight were calculated at each time interval for each group of specimens. The values were compared by statistical parametric tests using SPSS 16.0 Software. The data was subjected to paired ‘t‘ test, independent ‘t’ test, one-way ANOVA test and multiple comparisons with Scheffe's test. RESULTS: There was no significance in the amount of gutta-percha dissolved at 2- and 5-minute immersion time intervals in all groups (P>0.05) except the tetrachloroethylene group (P=0.00). There was a very high significance in the amount of resilon dissolved at 2- and 5-minute immersion time intervals in all groups (P=0.00) except the xylene and distilled water (Control) groups (P>0.05). CONCLUSION: The results showed that xylene, refined orange oil and tetrachloroethylene can be used for softening gutta-percha/resilon during retreatment with various techniques- xylene being the best solvent both for gutta-percha and resilon.
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spelling pubmed-33390082012-05-03 Dissolving efficacy of different organic solvents on gutta-percha and resilon root canal obturating materials at different immersion time intervals Mushtaq, Mubashir Farooq, Riyaz Ibrahim, Mohammed Khan, Fayiza Yaqoob J Conserv Dent Original Article BACKGROUND AIM: The purpose of this study was to compare and evaluate the dissolving capability of various endodontic solvents used during endodontic retreatment on resilon and gutta-percha at different immersion time intervals. MATERIALS AND METHODS: 160 ISO no. 40 cones (0.06 taper), 80 each of resilon and gutta-percha were taken as samples for the study. Both resilon and gutta-percha were divided into eight experimental groups of 20 cones (four groups each of resilon and gutta-percha) for immersion in xylene, tetrachloroethylene, refined orange oil and distilled water. Each group was further divided into two equal subgroups (n=10) for 2- and 5-minute immersion time intervals at room temperature to investigate the potential of these solvents for clinical use in dissolving resilon and gutta-percha. Each sample was weighed initially before immersing in the solvent on a digital analytical scale. Distilled water served as a control. Samples were removed from the respective solvents after the specified immersion period and washed in 100 ml of distilled water and allowed to dry for 24 h at 37°C in a humidifier. The samples were then again weighed after immersion in the specific solvent on a digital analytical scale. The extent of gutta-percha or resilon removed from the specimen was calculated from the difference between the original weight of gutta-percha or resilon sample and its final weight. Means and standard deviations of percentage loss of weight were calculated at each time interval for each group of specimens. The values were compared by statistical parametric tests using SPSS 16.0 Software. The data was subjected to paired ‘t‘ test, independent ‘t’ test, one-way ANOVA test and multiple comparisons with Scheffe's test. RESULTS: There was no significance in the amount of gutta-percha dissolved at 2- and 5-minute immersion time intervals in all groups (P>0.05) except the tetrachloroethylene group (P=0.00). There was a very high significance in the amount of resilon dissolved at 2- and 5-minute immersion time intervals in all groups (P=0.00) except the xylene and distilled water (Control) groups (P>0.05). CONCLUSION: The results showed that xylene, refined orange oil and tetrachloroethylene can be used for softening gutta-percha/resilon during retreatment with various techniques- xylene being the best solvent both for gutta-percha and resilon. Medknow Publications & Media Pvt Ltd 2012 /pmc/articles/PMC3339008/ /pubmed/22557812 http://dx.doi.org/10.4103/0972-0707.94584 Text en Copyright: © Journal of Conservative Dentistry http://creativecommons.org/licenses/by-nc-sa/3.0 This is an open-access article distributed under the terms of the Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Article
Mushtaq, Mubashir
Farooq, Riyaz
Ibrahim, Mohammed
Khan, Fayiza Yaqoob
Dissolving efficacy of different organic solvents on gutta-percha and resilon root canal obturating materials at different immersion time intervals
title Dissolving efficacy of different organic solvents on gutta-percha and resilon root canal obturating materials at different immersion time intervals
title_full Dissolving efficacy of different organic solvents on gutta-percha and resilon root canal obturating materials at different immersion time intervals
title_fullStr Dissolving efficacy of different organic solvents on gutta-percha and resilon root canal obturating materials at different immersion time intervals
title_full_unstemmed Dissolving efficacy of different organic solvents on gutta-percha and resilon root canal obturating materials at different immersion time intervals
title_short Dissolving efficacy of different organic solvents on gutta-percha and resilon root canal obturating materials at different immersion time intervals
title_sort dissolving efficacy of different organic solvents on gutta-percha and resilon root canal obturating materials at different immersion time intervals
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3339008/
https://www.ncbi.nlm.nih.gov/pubmed/22557812
http://dx.doi.org/10.4103/0972-0707.94584
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