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Influence of Ionizing Radiation on Fluoride-Releasing Dental Restorative Materials

This study aimed to investigate the effects of radiotherapy on the mechanical, chemical, and surface properties of two recently introduced restorative dental materials (a glass hybrid and an alkasite), while two conventional restorative materials served as references. Material specimens of the exper...

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Autores principales: Turjanski, Sarah, Par, Matej, Bergman, Lana, Soče, Majana, Grego, Timor, Klarić Sever, Eva
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9920463/
https://www.ncbi.nlm.nih.gov/pubmed/36771932
http://dx.doi.org/10.3390/polym15030632
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author Turjanski, Sarah
Par, Matej
Bergman, Lana
Soče, Majana
Grego, Timor
Klarić Sever, Eva
author_facet Turjanski, Sarah
Par, Matej
Bergman, Lana
Soče, Majana
Grego, Timor
Klarić Sever, Eva
author_sort Turjanski, Sarah
collection PubMed
description This study aimed to investigate the effects of radiotherapy on the mechanical, chemical, and surface properties of two recently introduced restorative dental materials (a glass hybrid and an alkasite), while two conventional restorative materials served as references. Material specimens of the experimental groups (irradiated) were compared to the specimens of the control groups that underwent the same preparation procedure but without irradiation. The experimental groups of restorative material specimens were irradiated with a total of 70 Gy over 35 days (2 Gy/day × 35 days), while the control groups received no treatment. The following properties were evaluated: surface microhardness (Vickers), surface roughness, color change, flexural strength, flexural modulus, material reliability, and infrared spectra. For the experimental groups, measurements were performed 24 h after specimen preparation, i.e., before radiotherapy and after the completion of the irradiation protocol. For the control groups, measurements were performed after the corresponding periods of no treatment. A statistically significant increase in microhardness (p = 0.001–0.004) and surface roughness (p = 0.013) was observed as a result of material aging/maturation in both the control and experimental groups. However, the only statistically significant difference between the control and experimental groups was observed in the discoloration of the conventional reference material (p < 0.001). In conclusion, no statistically significant negative effects of a therapeutic dose of radiotherapy on any of the tested properties of the alkasite and glass hybrid materials were observed, whereas only a minor negative effect of radiotherapy in terms of discoloration was found for a conventional resin composite that was used as a reference material.
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spelling pubmed-99204632023-02-12 Influence of Ionizing Radiation on Fluoride-Releasing Dental Restorative Materials Turjanski, Sarah Par, Matej Bergman, Lana Soče, Majana Grego, Timor Klarić Sever, Eva Polymers (Basel) Article This study aimed to investigate the effects of radiotherapy on the mechanical, chemical, and surface properties of two recently introduced restorative dental materials (a glass hybrid and an alkasite), while two conventional restorative materials served as references. Material specimens of the experimental groups (irradiated) were compared to the specimens of the control groups that underwent the same preparation procedure but without irradiation. The experimental groups of restorative material specimens were irradiated with a total of 70 Gy over 35 days (2 Gy/day × 35 days), while the control groups received no treatment. The following properties were evaluated: surface microhardness (Vickers), surface roughness, color change, flexural strength, flexural modulus, material reliability, and infrared spectra. For the experimental groups, measurements were performed 24 h after specimen preparation, i.e., before radiotherapy and after the completion of the irradiation protocol. For the control groups, measurements were performed after the corresponding periods of no treatment. A statistically significant increase in microhardness (p = 0.001–0.004) and surface roughness (p = 0.013) was observed as a result of material aging/maturation in both the control and experimental groups. However, the only statistically significant difference between the control and experimental groups was observed in the discoloration of the conventional reference material (p < 0.001). In conclusion, no statistically significant negative effects of a therapeutic dose of radiotherapy on any of the tested properties of the alkasite and glass hybrid materials were observed, whereas only a minor negative effect of radiotherapy in terms of discoloration was found for a conventional resin composite that was used as a reference material. MDPI 2023-01-26 /pmc/articles/PMC9920463/ /pubmed/36771932 http://dx.doi.org/10.3390/polym15030632 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Turjanski, Sarah
Par, Matej
Bergman, Lana
Soče, Majana
Grego, Timor
Klarić Sever, Eva
Influence of Ionizing Radiation on Fluoride-Releasing Dental Restorative Materials
title Influence of Ionizing Radiation on Fluoride-Releasing Dental Restorative Materials
title_full Influence of Ionizing Radiation on Fluoride-Releasing Dental Restorative Materials
title_fullStr Influence of Ionizing Radiation on Fluoride-Releasing Dental Restorative Materials
title_full_unstemmed Influence of Ionizing Radiation on Fluoride-Releasing Dental Restorative Materials
title_short Influence of Ionizing Radiation on Fluoride-Releasing Dental Restorative Materials
title_sort influence of ionizing radiation on fluoride-releasing dental restorative materials
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9920463/
https://www.ncbi.nlm.nih.gov/pubmed/36771932
http://dx.doi.org/10.3390/polym15030632
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