Document Detail


Micromorphology of the Dental Pulp Is Highly Preserved in Cancer Patients Who Underwent Head and Neck Radiotherapy.
MedLine Citation:
PMID:  25150372     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
INTRODUCTION: Teeth are often included in the radiation field during head and neck radiotherapy, and recent clinical evidence suggests that dental pulp is negatively affected by the direct effects of radiation, leading to impaired sensitivity of the dental pulp. Therefore, this study aimed to investigate the direct effects of radiation on the microvasculature, innervation, and extracellular matrix of the dental pulp of patients who have undergone head and neck radiotherapy.
METHODS: Twenty-three samples of dental pulp from patients who finished head and neck radiotherapy were analyzed. Samples were histologically processed and stained with hematoxylin-eosin for morphologic evaluation of the microvasculature, innervation, and extracellular matrix. Subsequently, immunohistochemical analysis of proteins related to vascularization (CD34 and smooth muscle actin), innervation (S-100, NCAM/CD56, and neurofilament), and extracellular matrix (vimentin) of the dental pulp was performed.
RESULTS: The morphologic study identified preservation of the microvasculature, nerve bundles, and components of the extracellular matrix in all studied samples. The immunohistochemical analysis confirmed the morphologic findings and showed a normal pattern of expression for the studied proteins in all samples.
CONCLUSIONS: Direct effects of radiotherapy are not able to generate morphologic changes in the microvasculature, innervation, and extracellular matrix components of the dental pulp in head and neck cancer patients.
Authors:
Karina Morais Faria; Thais Bianca Brandão; Ana Carolina Prado Ribeiro; Adriele Ferreira Gouvêa Vasconcellos; Icaro Thiago de Carvalho; Fernando Freire de Arruda; Gilberto Castro Junior; Vanessa Cristina Gross; Oslei Paes Almeida; Marcio Ajudarte Lopes; Alan Roger Santos-Silva
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-8-20
Journal Detail:
Title:  Journal of endodontics     Volume:  -     ISSN:  1878-3554     ISO Abbreviation:  J Endod     Publication Date:  2014 Aug 
Date Detail:
Created Date:  2014-8-24     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7511484     Medline TA:  J Endod     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2014 American Association of Endodontists. Published by Elsevier Inc. All rights reserved.
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