Abstract(s)
Introdução: O tratamento endodôntico, não cirúrgico, é constituído por três grandes fases: acesso endodôntico, preparo biomecânico e obturação canalar. Um dos requisitos primordiais para alcançar o sucesso do tratamento é a adequada obturação do sistema de canais radiculares. Ao longo dos anos têm sido introduzidas diferentes técnicas de obturação com a finalidade de melhorar os resultados do tratamento. Objetivo: O objetivo deste estudo in vitro foi avaliar a capacidade de selamento apical de duas técnicas de obturação distintas: a Técnica de Condensação Lateral e a Técnica de Obturação Thermafil® para concluir qual proporcionará melhores resultados no isolamento dos canais radiculares. Materiais e Métodos. Selecionaram-se quarenta e quatro dentes monorradiculares, retos ou com ligeira curvatura apical. Após a preparação biomecânica, quarenta dentes foram divididos aleatoriamente em dois grupos experimentais e os restantes em dois grupos controlo. Cada dente foi isolado pela aplicação de verniz até 2 a 3 mm do ápice radicular, à exceção do controlo negativo que foi totalmente envernizado. A capacidade de selamento apical foi determinada após a imersão do terço apical em azul-de-metileno a 2%, a 37ºC durante 7 dias. Para a medição linear da quantidade de infiltração do corante foi realizado um corte longitudinal ao longo do eixo dentário e analisado através do microscópico. Resultados: A análise estatística dos resultados deste estudo verificou que não havia diferenças estatisticamente significativas entre a capacidade de selamento apical da Técnica de obturação Thermafil® e a Técnica de Condensação Lateral. Conclusão: Nas condições do estudo nenhuma técnica de obturação impediu a infiltração apical de azul de metileno. Acreditamos que o sucesso de qualquer técnica depende do conhecimento da metodologia, do respeito pelas instruções/recomendações dadas pelo fabricante e a destreza manual do operador.
Introduction: The Endodontic Treatment, nonsurgical, consists of three main phases: endodontic access, biomechanical preparation and filling. One of the primary requirements for success of treatment is appropriate three-dimensional obturation of the root canal system. Over the years different filling techniques have been introduced in order to improve the results of treatment. Aim: The aim of this in vitro study has been to evaluate the sealing capacity of two filling techniques: Lateral Condensation and Thermafil®. Methodology: We selected forty-four teeth single-rooted, straight or with slight apical curvature. After biomechanical preparation, forty teeth were randomly divided into two experimental groups and the other in two control groups. The teeth, except the negative control, were covered with varnish up to 2-3 mm from the apical foramen. The apical sealing capacity was determined after placing the third apical in methylene blue at 2% at 37ºC for seven days. Linear measurement of the amount of dye penetration was take place along the longitudinal axis of the tooth and examined by microscope. Results: The statistical analysis of the research results has shown that there were no significant statistical differences between the apical seal ability of the obturation technique Thermafill® and the lateral condensation. Conclusions: Under the described conditions, none of the filling techniques used was able to avoid apical dye penetration of the methylene blue solution. We believe that, the success of any technique depends on knowledge of the methodology of compliance with instructions/recommendations giver by the manufacturer and the manual dexterity of the operator.
Introduction: The Endodontic Treatment, nonsurgical, consists of three main phases: endodontic access, biomechanical preparation and filling. One of the primary requirements for success of treatment is appropriate three-dimensional obturation of the root canal system. Over the years different filling techniques have been introduced in order to improve the results of treatment. Aim: The aim of this in vitro study has been to evaluate the sealing capacity of two filling techniques: Lateral Condensation and Thermafil®. Methodology: We selected forty-four teeth single-rooted, straight or with slight apical curvature. After biomechanical preparation, forty teeth were randomly divided into two experimental groups and the other in two control groups. The teeth, except the negative control, were covered with varnish up to 2-3 mm from the apical foramen. The apical sealing capacity was determined after placing the third apical in methylene blue at 2% at 37ºC for seven days. Linear measurement of the amount of dye penetration was take place along the longitudinal axis of the tooth and examined by microscope. Results: The statistical analysis of the research results has shown that there were no significant statistical differences between the apical seal ability of the obturation technique Thermafill® and the lateral condensation. Conclusions: Under the described conditions, none of the filling techniques used was able to avoid apical dye penetration of the methylene blue solution. We believe that, the success of any technique depends on knowledge of the methodology of compliance with instructions/recommendations giver by the manufacturer and the manual dexterity of the operator.
Description
Keywords
Selamento apical Thermafil® Condensação lateral Obturação radicular Endodontia Apical sealing Thermafil® Lateral condensation Endodontics Obturation