ABSTRACT
ABSTRACT Objective: To guide professionals about the criteria for replacing amalgam restorations and inform them about the new guidelines regarding the use/indication of this (amalgam) material after the Minamata Convention - COP-4. Material and Methods: The articles were selected from the databases (PubMed, Scielo, Bireme), and relevant articles on the subject between the years 2003-2021 were selected. Recently, social media have been flooded with dental treatments that aim to perform restorations only with composite resins or other types of esthetic material and completely replace all dental amalgam restorations, irrespective of their time in place, size, and functionality. Results: Although improperly, it has been noted that this information reaches patients, and they are led to believe in the inaccurate data that is passed on, such as, for example, (that amalgam leads to) permanent contamination by mercury, causing systemic problems and the loss of the tooth. Conclusion: The "phase down" of amalgam in research and teaching has previously been observed in several countries worldwide; however, its use is still necessary given particular circumstances, which, theoretically, make it a material with exact indication.
Subject(s)
Dental Amalgam/chemistry , Dental Materials , Dental Restoration, Permanent , Long Term Adverse Effects , Longitudinal Studies , Composite ResinsABSTRACT
ABSTRACT Objective: evaluate the sterilization of human teeth irradiated by microwaves. Methods: Sixty human third molars are divided into three groups (n = 20): G1 without sterilization (negative control); G2 - autoclaving for 20 minutes 1Kgf/cm2 at 120 ° C (positive control); G3 - sterilization in a microwave vessel containing 200ml of distilled water in a microwave irradiated at 650W for 3 minutes. Results: No culture media of G2 and G3 presented contamination after autoclaving and microwave sterilization. Conclusion: Autoclave sterilization and microwave sterilization were effective decontamination methods under the experimental conditions tested.
RESUMO Objetivos: avaliar a esterilização de dentes humanos através do uso da autoclave e da irradiação por micro-ondas. Métodos: Quarenta incisivos centrais superiores humanos foram distribuídos em três grupos: G1- sem esterilização (controle negativo); G2 - esterilização em autoclave, durante 20 minutos, 1Kgf/cm2, a 120ºC (controle positivo); G3 - esterilização com micro--ondas em recipiente contendo 100ml de água destilada, irradiado a 900W em microondas durante 3 minutos. Resultados: Nenhum meio de cultura do G2 e G3 apresentou contaminação após esterilização em autoclave e microondas respectivamente. Conclusão: A esterilização em autoclave e a esterilização em micro-ondas foram métodos eficazes de descontaminação nas condições experimentais testadas.