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Type: Artigo de periódico
Title: Patterns of Demineralization and Dentin Reactions in Radiation-Related Caries
Author: Silva, ARS
Alves, FA
Antunes, A
Goes, MF
Lopes, MA
Abstract: Radiation-related caries is a unique form of rampant decay and is a complication of head and neck radiotherapy that frequently causes generalized dental destruction and impairs quality of life in cancer patients. The aim of this study was to investigate the patterns of demineralization of caries in irradiated patients and to establish whether direct radiogenic damage to the dentition might be important in the progression of radiation-related caries. Teeth from patients who had concluded radiotherapy were examined histologically by polarized light microscopy, and the ultrastructure was examined by scanning backscattered electron microscopy. Cervical caries and incisal caries, a very unusual sort of lesion, were widely detected. Additionally, diffuse brown discoloration of the smooth surface of enamel was frequently observed. Polarized light microscopy suggested that these areas were incipient caries. Evidence of normal odontoblast function was observed in the detection of reactionary dentin and intratubular dentin deposition. In conclusion, radiation-related caries seems to have the same morphological and demineralization pattern as ordinary caries, with the presence of demineralized dentin, a translucent zone, dentin dead tracts, reactionary dentin and intratubular dentin deposition. Based on these findings, direct radiogenic destruction of the teeth seems to be not essential to the microscopic progression of radiation-related caries. Copyright (C) 2009 S. Karger AG, Basel
Subject: Dental caries
Polarized light microscopy
Radiation caries
Radiation-related caries
Scanning electron microscopy
Country: Suíça
Editor: Karger
Citation: Caries Research. Karger, v. 43, n. 1, n. 43, n. 49, 2009.
Rights: fechado
Identifier DOI: 10.1159/000192799
Date Issue: 2009
Appears in Collections:Unicamp - Artigos e Outros Documentos

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