Effectiveness of EDTA 17% in the removal of smear layer and calcium hydroxide dressing from the root canal walls / Efetividade do EDTA 17% na remoção da smear layer e da medicação intracanal de hidróxido de cálcio das paredes dos canais radiculares

作者: Márcia Gabriella Lino de Barros Bortolotti , Patrícia Fernando Miranda , Rosana de Souza Pereira , Gisela de Souza Pereira , Juliana Machado Barroso

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摘要: ABSTRACT Objective To evaluate the effectiveness of EDTA 17% on removal smear layer and calcium hydroxide dressing in different thirds root canal. Methods Forty canines were instrumented cervical middle using Gates-Glidden drills. In working length, enlargements carried out with files up to #35 followed by scaling #50. After instrumentation, teeth divided into four groups according type final irrigation: Group I - irrigation 5 ml NaOCl 2.5%, II 2.5%; III IV 5ml one 2.5%. The filled radiographed. then submitted clearing technique photographed means a camera coupled stereomicroscope. Results The images showed: presence three fewer accessory canals filled; group smaller amount cervical, apical third filling canals; there are residues from ervical, third, all was reduction remnants largest number canals. Conclusion It can be concluded that use favored intracanal Indexing terms : Calcium hydroxide. Dental pulp cavity. Edetic acid. Smear Layer. RESUMO Objetivo Avaliar eficacia do na remocao da e medicacao de hidroxido calcio nos diferentes tercos canal radicular. Metodos Quarenta caninos inferiores foram instrumentados medio utilizando-se brocas Gates-Glidden. No comprimento trabalho realizou-se o alargamento ate lima seguido escalonamento Apos os dentes divididos em quatro grupos acordo com irrigacao final: grupo 2,5%; seguidos 2,5%. Os obturados radiografados. Posteriormente diafanizados fotografados por meio maquina fotografica acoplada lupa estereoscopica. Resultados As imagens revelaram: presenca tres menor numero canais acessorios preenchidos; nota-se quantidade no terco obturacao acessorios; ha residuos apical; todos houve reducao maior preenchidos. Conclusao Pode-se concluir que uso favoreceu dos radicular. Termos indexacao Hidroxido calcio. Cavidade pulpar. Acido edetico. Camada esfregaco.

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