Use este identificador para citar ou linkar para este item: http://repositorio.bc.ufg.br/handle/ri/16353
Tipo do documento: Artigo
Título: Characterization of calcium oxide in root perforation sealer materials
Autor: Estrela, Carlos
Sousa Neto, Manoel Damião
Guedes, Orlando Aguirre
Alencar, Ana Helena Gonçalves de
Duarte, Marco Antonio Hungaro
Pécora, Jesus Djalma
Abstract: Root perforation represents an undesirable complication that may lead to an unfavorable prognosis. The aims of this study were to characterize and to compare the presence of calcium oxide (CaO) on the chemical composition of materials used for root perforation therapy: gray and white mineral trioxide aggregate (MTA) and Portland cement (PC), gray MTA+5%CaO and gray MTA+10%CaO. The last two materials were analyzed to evaluate the increase of CaO in the final sample. CaO alone was used as a standard. Eighteen polyethylene tubes with an internal diameter of 3 mm and 3 mm in length were prepared, filled and then transferred to a chamber with 95% relative humidity and a temperature of 37 o C. The chemical compounds (particularly CaO) and the main components were analyzed by energy-dispersive X-ray microanalysis (EDX). EDX revealed the following concentrations of CaO: gray MTA: 59.28%, white MTA: 63.09%; PC: 72.51%; gray MTA+5%CaO: 63.48% and gray MTA+10%CaO: 67.55%. The tested materials presented different concentrations of CaO. Even with an increase of 5 and 10% CaO in gray MTA, the CaO levels found in the MTA samples were lower than those found in PC.
Palavras-chave: MTA
Root perforations
Portland cement
Calcium hydroxide
Calcium oxide
País: Brasil
Unidade acadêmica: Faculdade de Odontologia - FO (RG)
Citação: ESTRELA, Carlos et al. Characterization of calcium oxide in root perforation sealer materials. Brazilian Dental Journal, Rbeirão Preto, v. 23, n. 5, p. 539-546, 2012.
Tipo de acesso: Acesso Aberto
Identificador do documento: 10.1590/S0103-64402012000500012
Identificador do documento: 10.1590/S0103-64402012000500012
URI: http://repositorio.bc.ufg.br/handle/ri/16353
Data de publicação: 2012
Aparece nas coleções:FM - Artigos publicados em periódicos

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