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EFFECTIVENESS OF NaOCl ALONE OR IN COMBINATION WITH EDTA ON THE DIFFUSION OF HYDROXYL IONS RELEASED BY CALCIUM HYDROXIDE PASTE

AIM: To evaluate the effect of different irrigant solutions employed during removal and replacement of calcium hydroxide paste on the diffusion of hydroxyl ions through root canal dentine in vitro. METHODOLOGY: Thirty-five maxillary and mandibular human canines with straight and fully developed root...

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Autores principales: FELIPPE, Mara Cristina Santos, FELIPPE, Wilson Tadeu, ESPEZIM, Catherine Schmitz, de FREITAS, Sérgio Fernando Torres
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Faculdade de Odontologia de Bauru da Universidade de São Paulo 2006
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4327162/
https://www.ncbi.nlm.nih.gov/pubmed/19089021
http://dx.doi.org/10.1590/S1678-77572006000100001
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author FELIPPE, Mara Cristina Santos
FELIPPE, Wilson Tadeu
ESPEZIM, Catherine Schmitz
de FREITAS, Sérgio Fernando Torres
author_facet FELIPPE, Mara Cristina Santos
FELIPPE, Wilson Tadeu
ESPEZIM, Catherine Schmitz
de FREITAS, Sérgio Fernando Torres
author_sort FELIPPE, Mara Cristina Santos
collection PubMed
description AIM: To evaluate the effect of different irrigant solutions employed during removal and replacement of calcium hydroxide paste on the diffusion of hydroxyl ions through root canal dentine in vitro. METHODOLOGY: Thirty-five maxillary and mandibular human canines with straight and fully developed roots were used. After mechanical preparation up to 1mm short of tooth length, 30 canals were filled with calcium hydroxide paste and 5 canals were left empty; all teeth had their coronal accesses properly sealed. Teeth were placed in plastic containers with distilled water, and pH was read after 30 days when the paste from 20 teeth was renewed. After removal of the paste by endodontic instrumentation and irrigation with distilled water, canals were replenished with newly mixed paste in Group 1 and 2. In these groups, final irrigation was conducted with 5 mL of EDTA followed by 5 mL of NaOCl in specimens in Group 1, and 5 mL of NaOCl only in specimens in Group 2. In 10 teeth the paste was not replenished at 30 days (Group 3). All specimens were returned to the containers with fresh distilled water, and the pH was recorded after another 30 days. The differences between the first (30d) and second (60d) pH readings were calculated and submitted to analysis of variance and individual comparisons using the Scheffeé's test. RESULTS: Results of mean analysis on differences of pH readings showed that greater diffusion had occurred on specimens in Group 3. Individual comparisons using Scheffeé's test showed statistical significance between Groups 2 and 3, and equivalence between all other groups. CONCLUSION: It was concluded that the use of EDTA did not enhance diffusion of hydroxyl ions through root canal dentine.
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spelling pubmed-43271622015-04-24 EFFECTIVENESS OF NaOCl ALONE OR IN COMBINATION WITH EDTA ON THE DIFFUSION OF HYDROXYL IONS RELEASED BY CALCIUM HYDROXIDE PASTE FELIPPE, Mara Cristina Santos FELIPPE, Wilson Tadeu ESPEZIM, Catherine Schmitz de FREITAS, Sérgio Fernando Torres J Appl Oral Sci Original Article AIM: To evaluate the effect of different irrigant solutions employed during removal and replacement of calcium hydroxide paste on the diffusion of hydroxyl ions through root canal dentine in vitro. METHODOLOGY: Thirty-five maxillary and mandibular human canines with straight and fully developed roots were used. After mechanical preparation up to 1mm short of tooth length, 30 canals were filled with calcium hydroxide paste and 5 canals were left empty; all teeth had their coronal accesses properly sealed. Teeth were placed in plastic containers with distilled water, and pH was read after 30 days when the paste from 20 teeth was renewed. After removal of the paste by endodontic instrumentation and irrigation with distilled water, canals were replenished with newly mixed paste in Group 1 and 2. In these groups, final irrigation was conducted with 5 mL of EDTA followed by 5 mL of NaOCl in specimens in Group 1, and 5 mL of NaOCl only in specimens in Group 2. In 10 teeth the paste was not replenished at 30 days (Group 3). All specimens were returned to the containers with fresh distilled water, and the pH was recorded after another 30 days. The differences between the first (30d) and second (60d) pH readings were calculated and submitted to analysis of variance and individual comparisons using the Scheffeé's test. RESULTS: Results of mean analysis on differences of pH readings showed that greater diffusion had occurred on specimens in Group 3. Individual comparisons using Scheffeé's test showed statistical significance between Groups 2 and 3, and equivalence between all other groups. CONCLUSION: It was concluded that the use of EDTA did not enhance diffusion of hydroxyl ions through root canal dentine. Faculdade de Odontologia de Bauru da Universidade de São Paulo 2006-02 /pmc/articles/PMC4327162/ /pubmed/19089021 http://dx.doi.org/10.1590/S1678-77572006000100001 Text en http://creativecommons.org/licenses/by-nc/3.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License, which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Article
FELIPPE, Mara Cristina Santos
FELIPPE, Wilson Tadeu
ESPEZIM, Catherine Schmitz
de FREITAS, Sérgio Fernando Torres
EFFECTIVENESS OF NaOCl ALONE OR IN COMBINATION WITH EDTA ON THE DIFFUSION OF HYDROXYL IONS RELEASED BY CALCIUM HYDROXIDE PASTE
title EFFECTIVENESS OF NaOCl ALONE OR IN COMBINATION WITH EDTA ON THE DIFFUSION OF HYDROXYL IONS RELEASED BY CALCIUM HYDROXIDE PASTE
title_full EFFECTIVENESS OF NaOCl ALONE OR IN COMBINATION WITH EDTA ON THE DIFFUSION OF HYDROXYL IONS RELEASED BY CALCIUM HYDROXIDE PASTE
title_fullStr EFFECTIVENESS OF NaOCl ALONE OR IN COMBINATION WITH EDTA ON THE DIFFUSION OF HYDROXYL IONS RELEASED BY CALCIUM HYDROXIDE PASTE
title_full_unstemmed EFFECTIVENESS OF NaOCl ALONE OR IN COMBINATION WITH EDTA ON THE DIFFUSION OF HYDROXYL IONS RELEASED BY CALCIUM HYDROXIDE PASTE
title_short EFFECTIVENESS OF NaOCl ALONE OR IN COMBINATION WITH EDTA ON THE DIFFUSION OF HYDROXYL IONS RELEASED BY CALCIUM HYDROXIDE PASTE
title_sort effectiveness of naocl alone or in combination with edta on the diffusion of hydroxyl ions released by calcium hydroxide paste
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4327162/
https://www.ncbi.nlm.nih.gov/pubmed/19089021
http://dx.doi.org/10.1590/S1678-77572006000100001
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