Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/356013
Type: Artigo
Title: A modified protocol of mandibular osteoradionecrosis induction in rats with external beam radiation therapy
Author: Yamasaki, Mayra Cristina
Roque-Torres, Gina Delia
Peroni, Leonardo Vieira
Nascimento, Eduarda Helena Leandro
Salmon, Benjamin
Oliveira, Matheus Lima
Freitas, Deborah Queiroz
Correr-Sobrinho, Lourenço
Abstract: To propose a modified protocol of mandibular osteoradionecrosis induction in rats with external beam radiation therapy. A total of 45 male Wistar rats were used in this study. Firstly, 25 rats were divided into 5 groups (n = 5) according to the radiation dose protocol: without irradiation and irradiated with 15 Gy, 20 Gy, 25 Gy, or 30 Gy using a linear accelerator. Secondly, 15 other rats were divided into 3 groups (n = 5) according to the time of extraction of the three right mandibular molars: 7, 10, or 14 days after irradiation of 20 Gy. Lastly, dental extractions were performed in 5 other rats without irradiation (C-E10) for comparison with those of the group of dental extractions 10 days after irradiation (I-E10). The irradiated animals survived throughout the study period only at single doses of 15 Gy and 20 Gy. The suitable time for dental extractions after irradiation to induce mandibular osteoradionecrosis was defined as 10 days. Macroscopic evaluation of the right hemimandibles showed presence of osteoradionecrosis in I-E10 group and complete gingival healing in C-E10 group. A single radiation dose of 20 Gy focused on head and neck region combined with the extraction of the three mandibular molars 10 days after irradiation constitutes a feasible protocol of mandibular osteoradionecrosis induction in rats with external beam radiation therapy
Subject: Radioterapia
Osteorradionecrose
Country: Alemanha
Editor: Springer
Rights: Fechado
Identifier DOI: 10.1007/s00784-019-03054-0
Address: https://link.springer.com/article/10.1007%2Fs00784-019-03054-0
Date Issue: 2020
Appears in Collections:FOP - Artigos e Outros Documentos

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