Identificación microbiológica en los retenedores intrarradiculares colados en metal base y oro tipo III antes y después del proceso de esterilizacion Estudio in – vitro

Abstract

Introduction. Bringing an intra root canal retainer inside the canal can be a risk if it is not done under sterile conditions and, as a consequence, colonization of microorganisms that trigger the failure of endodontic treatment can occur. For this reason, the need arises to know the pathogenic microbiological population present in the retainers that, when cemented without a prior sterilization process, could lead to possible endodontic failure. Objective: To determine the microorganisms present in intra-root canal retainers cast in base metal and in Gold type III, manufactured in different dental laboratories in the city of Bogotá, before and after their autoclave sterilization. Method: 40 core patterns are made in lower premolar teeth from simulated resin models. 20 gold and 20 base metal are cast. Finally, a microbiological study is carried out in Agar culture medium. Results: Microbiological growth is observed in 60% of the total samples. The microorganisms with the highest prevalence in the retainers were: Staphylococcus epidermis, Staphylococcus warnei and bacillus megaterium. Conclusions: Disinfection and sterilization of all intra-root canal accessories must be a mandatory procedure to optimize the success rates of the treatment and minimize possible failures and complications.