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Investigation of the thermal and physicochemical behavior of two types of gutta-percha cones for back-filling the root canal
BACKGROUND: Gutta-percha (Gp) is an inert thermoplastic polymer used as a filling to replace the dental pulp space, which has been reformulated to improve its three-dimensional sealing properties. Therefore, this study aimed to analyze the physical, chemical and thermal properties of two types of gu...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Medicina Oral S.L.
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10198686/ https://www.ncbi.nlm.nih.gov/pubmed/37214747 http://dx.doi.org/10.4317/jced.60095 |
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author | Aguilar-Hernández, Jeannette Torres-Méndez, Fernando Méndez-González, María-Verónica Davila-Perez, Claudia-Edith Kolosovas-Machuca, Eleazar-Samuel Gutierrez-Sánchez, Mariana |
author_facet | Aguilar-Hernández, Jeannette Torres-Méndez, Fernando Méndez-González, María-Verónica Davila-Perez, Claudia-Edith Kolosovas-Machuca, Eleazar-Samuel Gutierrez-Sánchez, Mariana |
author_sort | Aguilar-Hernández, Jeannette |
collection | PubMed |
description | BACKGROUND: Gutta-percha (Gp) is an inert thermoplastic polymer used as a filling to replace the dental pulp space, which has been reformulated to improve its three-dimensional sealing properties. Therefore, this study aimed to analyze the physical, chemical and thermal properties of two types of gutta-percha filling. As well as measuring the temperature distribution along the cone at the time of cutting through an in-situ test. MATERIAL AND METHODS: Two commercially available brands of gutta-percha point were investigated: Conform Fit TM Gutta-Percha for ProTaper Gold® (PTG) (Dentsply Sirona), and Hygenic Gutta-Percha (Coltene whaledent). Differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) were selected for the thermal characterization of materials, and Fourier Transform Infrared Spectroscopy (FT-IR) for the chemical analysis of Gp cones. Regarding temperature distribution, it was evaluated using a thermographic camera (FLIR ONE® PRO by MicroUSB P/N 435-0011-01) at 0 to 20 s after the cutting process (n=11/group). RESULTS: Both materials have three fusion endotherms associated with the three crystalline phases of Gp, with similar temperatures but enthalpies that differ by 60%, the fusion enthalpy being higher for Conform Fit. In the chemical characterization, elements such as Zn, C, O, Ba, S and Si were found in both materials but in different proportions. Regarding the content of fillers, the Conform Fit presented around 30% of Gp polymer and 25% for the Hygenic. The morphological characterization shows a microtexturized coating in the form of bars on a micrometric scale for the Conform Fit, which could favor a better three-dimensional seal. In addition to that, in heat transfer studies they showed greater temperature control. CONCLUSIONS: The characterization of the materials allowed us to see the variation in terms of their composition and configuration to the Gp cones of two commercial brands. These variations directly modify the thermal behavior of the material. Key words:Gutta-percha, Conform Fit, Infrared thermography, Differential Scanning Calorimetry, Infrared Spectroscopy. |
format | Online Article Text |
id | pubmed-10198686 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | Medicina Oral S.L. |
record_format | MEDLINE/PubMed |
spelling | pubmed-101986862023-05-20 Investigation of the thermal and physicochemical behavior of two types of gutta-percha cones for back-filling the root canal Aguilar-Hernández, Jeannette Torres-Méndez, Fernando Méndez-González, María-Verónica Davila-Perez, Claudia-Edith Kolosovas-Machuca, Eleazar-Samuel Gutierrez-Sánchez, Mariana J Clin Exp Dent Research BACKGROUND: Gutta-percha (Gp) is an inert thermoplastic polymer used as a filling to replace the dental pulp space, which has been reformulated to improve its three-dimensional sealing properties. Therefore, this study aimed to analyze the physical, chemical and thermal properties of two types of gutta-percha filling. As well as measuring the temperature distribution along the cone at the time of cutting through an in-situ test. MATERIAL AND METHODS: Two commercially available brands of gutta-percha point were investigated: Conform Fit TM Gutta-Percha for ProTaper Gold® (PTG) (Dentsply Sirona), and Hygenic Gutta-Percha (Coltene whaledent). Differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) were selected for the thermal characterization of materials, and Fourier Transform Infrared Spectroscopy (FT-IR) for the chemical analysis of Gp cones. Regarding temperature distribution, it was evaluated using a thermographic camera (FLIR ONE® PRO by MicroUSB P/N 435-0011-01) at 0 to 20 s after the cutting process (n=11/group). RESULTS: Both materials have three fusion endotherms associated with the three crystalline phases of Gp, with similar temperatures but enthalpies that differ by 60%, the fusion enthalpy being higher for Conform Fit. In the chemical characterization, elements such as Zn, C, O, Ba, S and Si were found in both materials but in different proportions. Regarding the content of fillers, the Conform Fit presented around 30% of Gp polymer and 25% for the Hygenic. The morphological characterization shows a microtexturized coating in the form of bars on a micrometric scale for the Conform Fit, which could favor a better three-dimensional seal. In addition to that, in heat transfer studies they showed greater temperature control. CONCLUSIONS: The characterization of the materials allowed us to see the variation in terms of their composition and configuration to the Gp cones of two commercial brands. These variations directly modify the thermal behavior of the material. Key words:Gutta-percha, Conform Fit, Infrared thermography, Differential Scanning Calorimetry, Infrared Spectroscopy. Medicina Oral S.L. 2023-05-01 /pmc/articles/PMC10198686/ /pubmed/37214747 http://dx.doi.org/10.4317/jced.60095 Text en Copyright: © 2023 Medicina Oral S.L. https://creativecommons.org/licenses/by/2.5/This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Aguilar-Hernández, Jeannette Torres-Méndez, Fernando Méndez-González, María-Verónica Davila-Perez, Claudia-Edith Kolosovas-Machuca, Eleazar-Samuel Gutierrez-Sánchez, Mariana Investigation of the thermal and physicochemical behavior of two types of gutta-percha cones for back-filling the root canal |
title | Investigation of the thermal and physicochemical behavior of two types of gutta-percha cones for back-filling the root canal |
title_full | Investigation of the thermal and physicochemical behavior of two types of gutta-percha cones for back-filling the root canal |
title_fullStr | Investigation of the thermal and physicochemical behavior of two types of gutta-percha cones for back-filling the root canal |
title_full_unstemmed | Investigation of the thermal and physicochemical behavior of two types of gutta-percha cones for back-filling the root canal |
title_short | Investigation of the thermal and physicochemical behavior of two types of gutta-percha cones for back-filling the root canal |
title_sort | investigation of the thermal and physicochemical behavior of two types of gutta-percha cones for back-filling the root canal |
topic | Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10198686/ https://www.ncbi.nlm.nih.gov/pubmed/37214747 http://dx.doi.org/10.4317/jced.60095 |
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