Use este identificador para citar ou linkar para este item:
Tipo do documento: Artigo
Título: Chemical elements characterization of root canal sealers using scanning electron microscopy and energy dispersive x-ray analysis
Autor: Sampaio, Felipe Cavalcanti
Alencar, Ana Helena Gonçalves de
Guedes, Orlando Aguirre
Veloso, Heloisa Helena Pinho
Santos, Tatiane Oliveira dos
Estrela, Carlos
Abstract: Introduction: The aim of this study was to evaluate the chemical elements composition of root canal filling materials using Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray analysis (EDX). Methods: Eighteen standard polyethylene tubes were filled with the following materials: Sealapex ® , Sealer 26 ® , MTA Fillapex ® , Pulp Canal Sealer ® , Endofill ® and AH Plus ® . After 48 hours at 37°C and 95% relative humidity, the samples were surface-sputtered with gold and analyzed using SEM at 5000X magnification. Their chemical composition and element distributionwere determined using EDX. Results were evaluated qualitatively (SEM images and elemental mapping) and quantitatively (weight percentage). Results: Calcium oxide- and hydroxide-based sealers (Sealapex ® and Sealer 26 ® ) had calcium peaks of 53.58 wt% and 65.00 wt%. MTA Fillapex ® had 30.58 wt% of calcium and high amounts of silicon (31.02 wt%) and bismuth (27.38 wt%). Zinc oxide- and eugenol-based sealers, Pulp Canal Sealer ® and Endofill ® , had 67.74 wt% and 63.16 wt% of zinc each. AH Plus ® had a higher amount of zirconium (64.24 wt%). All materials had elements other than those described by the manufacturers. Surface analysis using EDX revealed that regularity varied, element distribution was uniform, and particles had similar sizes and variable shapes. Conclusions: Most chemical elements were those described by the manufacturers, but percentages were different. The surface of root canal sealers had different regularity findings, uniform distribution and particles of similar sizes but variable shapes.
Palavras-chave: Scanning electron microscopy
Root canl filling materials
Energy-dispersive X-ray analysis
Chemical poperties
País: Estados unidos
Unidade acadêmica: Faculdade de Odontologia - FO (RG)
Citação: SAMPAIO, Felipe Cavalcanti et al. Chemical elements characterization of root canal sealers using scanning electron microscopy and energy dispersive x-ray analysis. OHDM: oral health and dental management, v. 13, n. 1, p. 27-34, Mar. 2014.
Tipo de acesso: Acesso Aberto
Data de publicação: Mar-2014
Aparece nas coleções:FM - Artigos publicados em periódicos

Arquivos associados a este item:
Arquivo Descrição TamanhoFormato 
Artigo - Felipe Cavalcanti Sampaio - 2014.pdf2,74 MBAdobe PDFThumbnail

Este item está licenciada sob uma Licença Creative Commons Creative Commons