Effect of ionizing radiation on the microstructure and physical properties of endodontic gutta-percha points
Purpose: Patients undergoing radiotherapy for head or neck cancer often require root canal treatments, which can be compromised by the effects of radiation. This investigation aimed to determine whether ionizing radiation (IR), in doses similar to those used in conventional therapy, affects the surf...
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| Format: | Article |
| Language: | English |
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Istanbul University
2024-09-01
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| Series: | European Oral Research |
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| Online Access: | https://cdn.istanbul.edu.tr/file/JTA6CLJ8T5/859D764AA08A4C418C45B24D231CA01D |
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| author | María Alejandra Narváez-rodríguez Marina Vega-gonzález Rafael Alberto Pedraza-neiza Cesar López-cruz León Francisco Espinosa-cristóbal Rubén Abraham Domínguez-pérez |
| author_facet | María Alejandra Narváez-rodríguez Marina Vega-gonzález Rafael Alberto Pedraza-neiza Cesar López-cruz León Francisco Espinosa-cristóbal Rubén Abraham Domínguez-pérez |
| author_sort | María Alejandra Narváez-rodríguez |
| collection | DOAJ |
| description | Purpose: Patients undergoing radiotherapy for head or neck cancer often require root canal treatments, which can be compromised by the effects of radiation. This investigation aimed to determine whether ionizing radiation (IR), in doses similar to those used in conventional therapy, affects the surface and physicomechanical properties of various brands of endodontic gutta-percha points (EGPs).Materials and Methods: One hundred and twenty-three EGPs from three brands (Meta-Biomed, Dentsply, and Hygenic) were divided into groups and either exposed or not exposed to IR at a total dose of 50 Gy, divided into 25 fractions. Tensile strength and microhardness tests were performed on all EGPs. Scanning electron microscopy was utilized to identify possible microstructural surface changes due to IR exposure. The proportion of organic to inorganic components in each brand was also determined.Results: Exposure to IR resulted in significant changes only in the EGPs from the Meta-Biomed brand, including a notable decrease in tensile strength and an increase in microhardness. Furthermore, the surface microstructure of these EGPs displayed dark lines and striations over a large area, with some lines deeply embedded in the center and cavities of variable depths and extensions observed, leading to irregular and non-smooth surfaces. This brand had the highest proportion of organic components.Conclusion: The physicomechanical properties and surface microstructure of Meta-Biomed brand EGPs were significantly affected by IR at doses used in conventional therapy for head or neck cancer, while the other brands were less affected or unaffected. |
| format | Article |
| id | doaj-art-3fc90d0e9ff341e3b4e521431384fb23 |
| institution | OA Journals |
| issn | 2651-2823 |
| language | English |
| publishDate | 2024-09-01 |
| publisher | Istanbul University |
| record_format | Article |
| series | European Oral Research |
| spelling | doaj-art-3fc90d0e9ff341e3b4e521431384fb232025-08-20T01:48:16ZengIstanbul UniversityEuropean Oral Research2651-28232024-09-0158313914410.26650/eor.20241355944123456Effect of ionizing radiation on the microstructure and physical properties of endodontic gutta-percha pointsMaría Alejandra Narváez-rodríguez0https://orcid.org/0009-0000-2551-8162Marina Vega-gonzález1https://orcid.org/0000-0002-9465-1271Rafael Alberto Pedraza-neiza2https://orcid.org/0009-0006-7944-8108Cesar López-cruz3https://orcid.org/0009-0008-7322-1337León Francisco Espinosa-cristóbal4https://orcid.org/0000-0002-9295-6928Rubén Abraham Domínguez-pérez5https://orcid.org/0000-0001-8979-8394Universidad Autónoma de Querétaro, Santiago-de-Querétaro, MéxicoUniversidad Nacional Autónoma de México, Ensenada, MexicoCentro Oncológico de Querétaro, Santiago-de-Querétaro, MéxicoUniversidad Autónoma de Querétaro, Santiago-de-Querétaro, MéxicoAutonomous University of Juarez, Ciudad-Juárez, MéxicoUniversidad Autónoma de Querétaro, Santiago-de-Querétaro, MéxicoPurpose: Patients undergoing radiotherapy for head or neck cancer often require root canal treatments, which can be compromised by the effects of radiation. This investigation aimed to determine whether ionizing radiation (IR), in doses similar to those used in conventional therapy, affects the surface and physicomechanical properties of various brands of endodontic gutta-percha points (EGPs).Materials and Methods: One hundred and twenty-three EGPs from three brands (Meta-Biomed, Dentsply, and Hygenic) were divided into groups and either exposed or not exposed to IR at a total dose of 50 Gy, divided into 25 fractions. Tensile strength and microhardness tests were performed on all EGPs. Scanning electron microscopy was utilized to identify possible microstructural surface changes due to IR exposure. The proportion of organic to inorganic components in each brand was also determined.Results: Exposure to IR resulted in significant changes only in the EGPs from the Meta-Biomed brand, including a notable decrease in tensile strength and an increase in microhardness. Furthermore, the surface microstructure of these EGPs displayed dark lines and striations over a large area, with some lines deeply embedded in the center and cavities of variable depths and extensions observed, leading to irregular and non-smooth surfaces. This brand had the highest proportion of organic components.Conclusion: The physicomechanical properties and surface microstructure of Meta-Biomed brand EGPs were significantly affected by IR at doses used in conventional therapy for head or neck cancer, while the other brands were less affected or unaffected.https://cdn.istanbul.edu.tr/file/JTA6CLJ8T5/859D764AA08A4C418C45B24D231CA01Dradiotherapyendodontic gutta-percha pointsmicrostructurehead and neck cancerroot canal therapy |
| spellingShingle | María Alejandra Narváez-rodríguez Marina Vega-gonzález Rafael Alberto Pedraza-neiza Cesar López-cruz León Francisco Espinosa-cristóbal Rubén Abraham Domínguez-pérez Effect of ionizing radiation on the microstructure and physical properties of endodontic gutta-percha points European Oral Research radiotherapy endodontic gutta-percha points microstructure head and neck cancer root canal therapy |
| title | Effect of ionizing radiation on the microstructure and physical properties of endodontic gutta-percha points |
| title_full | Effect of ionizing radiation on the microstructure and physical properties of endodontic gutta-percha points |
| title_fullStr | Effect of ionizing radiation on the microstructure and physical properties of endodontic gutta-percha points |
| title_full_unstemmed | Effect of ionizing radiation on the microstructure and physical properties of endodontic gutta-percha points |
| title_short | Effect of ionizing radiation on the microstructure and physical properties of endodontic gutta-percha points |
| title_sort | effect of ionizing radiation on the microstructure and physical properties of endodontic gutta percha points |
| topic | radiotherapy endodontic gutta-percha points microstructure head and neck cancer root canal therapy |
| url | https://cdn.istanbul.edu.tr/file/JTA6CLJ8T5/859D764AA08A4C418C45B24D231CA01D |
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