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Efeito das soluções quelantes na microdureza da dentina radicular, no tratamento endodôntico não cirúrgico: revisão narrativa
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Abstract(s)
A remoção de microrganismos é o passo fulcral do tratamento endodôntico não cirúrgico. Numa necrose, existe uma colonização de biofilmes bacterianos que, associados à complexidade anatómica e invasão dos túbulos dentinários, tornam o processo de desinfeção desafiante.
A smear-layer é constituída por matéria orgânica e matéria inorgânica, formada por partículas menores, compactadas no interior dos túbulos dentinários, protegendo as bactérias previamente instaladas. A utilização de agentes quelantes juntamente com hipoclorito de sódio, é descrito como eficaz na remoção da smear-layer, contudo, a sua utilização pode levar à diminuição da resistência radicular.
Este trabalho tem como objetivo responder à questão: como potenciar a utilização dos agentes quelantes, sem comprometer a integridade radicular?
A realização deste trabalho envolveu uma pesquisa nas plataformas Pubmed e ScienceDirect utilizando palavras-chave selecionando artigos elaborados nos últimos cinco anos escritos em língua inglesa ou portuguesa.
The removal of microorganisms from the root canal system is the crucial step in the nonsurgical endodontic treatment. Amidst the presence of pulp necrosis, we can observe a colonization of bacterial biofilm, that in association with the anatomic complexity and the consequent invasion of the dentinal tubules, make the disinfection process particularly difficult. The smear-layer is composed of two different layers: a superficial one made by organic matter, and a deep one made by smaller particles, compacted in the interior of the dentinal tubules, making their removal a hard task. This compression reduces the dentinal permeability, protecting the bacteria who were previously installed there. The using of chelating agents in combination with sodium hypochlorite during the mechanic preparation of the root canal has been described as effective in the removal of the smear-layer in the cannal walls; however, it’s inadequate use can cause intra-radicular dentinal erosion and consequently the reduction of radicular resistance. This work has the objective of answering the question: How to potentiate the usage of essential chelating agents in the removal of the smear-layer, without compromising the radicular integrity?
The removal of microorganisms from the root canal system is the crucial step in the nonsurgical endodontic treatment. Amidst the presence of pulp necrosis, we can observe a colonization of bacterial biofilm, that in association with the anatomic complexity and the consequent invasion of the dentinal tubules, make the disinfection process particularly difficult. The smear-layer is composed of two different layers: a superficial one made by organic matter, and a deep one made by smaller particles, compacted in the interior of the dentinal tubules, making their removal a hard task. This compression reduces the dentinal permeability, protecting the bacteria who were previously installed there. The using of chelating agents in combination with sodium hypochlorite during the mechanic preparation of the root canal has been described as effective in the removal of the smear-layer in the cannal walls; however, it’s inadequate use can cause intra-radicular dentinal erosion and consequently the reduction of radicular resistance. This work has the objective of answering the question: How to potentiate the usage of essential chelating agents in the removal of the smear-layer, without compromising the radicular integrity?
Description
Keywords
Microdureza Irrigação Dentina radicular Smear-layer Ácido maleico Ácido etilenodiamina tetraacético Microhardness Irrigation Root dentine Maleic acid Ethylenediaminetetraacetic acid