2016
DOI: 10.1590/0103-6440201601267
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Effect of Gamma Radiation and Endodontic Treatment on Mechanical Properties of Human and Bovine Root Dentin

Abstract: This study evaluated the effect of gamma radiation and endodontic treatment on the microhardness and flexural strength of human and bovine root dentin. Forty singlerooted human teeth and forty bovine incisor teeth were collected, cleaned and stored in distilled water at 4 °C. The human and bovine teeth were divided into 4 groups (n=10) resulting from the combination of two study factors: first, regarding the endodontic treatment in 2 levels: with or without endodontic treatment; and second, radiotherapy in two… Show more

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Cited by 21 publications
(15 citation statements)
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“…This imbalance is related to the lower degree of mineralization and higher density of tubules in the intracanal root dentin region, which also justifies the nonalteration of carbonate in the middle root dentin region. In addition, the literature evidences the reduction of dentin microhardness after radiotherapy …”
Section: Discussionmentioning
confidence: 99%
“…This imbalance is related to the lower degree of mineralization and higher density of tubules in the intracanal root dentin region, which also justifies the nonalteration of carbonate in the middle root dentin region. In addition, the literature evidences the reduction of dentin microhardness after radiotherapy …”
Section: Discussionmentioning
confidence: 99%
“…Pacientes com tumores de cabeça e pescoço sob tratamento radioterápico podem apresentar alguns distúrbios orais e a complicação mais evidente para a dentição é a cárie induzida por radiação, no entanto, o efeito adicional causado pela terapia endodôntica realizada em dentes irradiados permanecia desconhecido. Pacientes com dentes obturados que requerem Research, Society and Development, v. 10, n. 7, e1010716127, 2021 (CC BY 4.0) | ISSN 2525-3409 | DOI: http://dx.doi.org/10.33448/rsd-v10i7.16127 radioterapia podem ter mais alterações nas propriedades mecânicas do substrato da dentina radicular (Novais et al, 2016) Em um estudo de Kataoka, S. H. et al em 2012, pacientes foram avaliados em diversas fases durante um tratamento de irradiação na região de orofaringe. Estes foram submetidos ao teste de sensibilidade pulpar ao frio no início e no final do tratamento, sendo que todos responderam ao teste de forma positiva no início do tratamento.…”
Section: Discussionunclassified
“…However, this technique should be avoided in oval root canals, being better indicated for round canals (18), justifying the tooth type selected for this study. The use of bovine teeth does not invalidate the study model, since these have often been used in laboratory studies in endodontics (19). Bovine teeth have morphological similarity with human tooth and the used of these teeth do not require approval of the ethics committee.…”
Section: Discussionmentioning
confidence: 99%