RESUMEN
CLINICAL RELEVANCE: The new formulations of nano-silver fluoride caused less dentin staining than the already available commercial agents 35% silver fluoride and silver diamine fluoride at 30% and 38%. SUMMARY: The objective of this study was to evaluate the dentin staining potential of nano-silver fluoride (NSF 600 and 1500 ppm) compared with the following commercially available cariostatic agents: Advantage Arrest (Elevate Oral Care, West Palm Beach, FL, USA), Riva Star (SDI, Victoria, Australia), and Cariestop (Biodinâmica, Paraná, Brazil). Seventy-five extracted human molars were sectioned at the cementoenamel junction, and the occlusal enamel was removed for exposure of coronary dentin. The samples were divided among the five agents tested (n=15). The dentin staining (ΔE/ΔL) was analyzed with a digital spectrophotometer (VITA Easyshade, VITA Zahnfabrik, Bad Säckingen, Germany) at three different time points (before application, after two weeks, and after four weeks). Photographic images were also performed. The Kruskal-Wallis and Mann-Whitney tests compared the mean ΔE and ΔL values between groups. The NSF 600 and 1500 ppm resulted in the smallest color change (ΔE=1.02 and 1.53) and dentin staining after four weeks (ΔL=-0.76 and -1.2). The new formulations differed significantly from the commercial cariostatic agents (p<0.001). NSF might be an alternative to silver diamine fluoride since it does not compromise esthetics.
Asunto(s)
Dentina , Fluoruros , Brasil , Humanos , Compuestos de Plata , Coloración y EtiquetadoRESUMEN
Foi realizado um estudo prospectivo com bloqueio do plexo braquial pela interescalênica em 60 crianças, entre 2 e 15 anos, submetidas a procedimentos cirúrgicos ou manipulaçöes do membro superior, em regime de urgência e/ou ambulatorial. Como guia para cálculo do volume da soluçäo anestésica (lidocaína), foi utilizada a tabela proposta por Winnie em 1970, sendo usada uma concentraçäo entre 0,5 e 2%. Os resultados obtidos demonstram facilidade na execuçäo da técnica quando associada a uma leve sedaçäo e/ou medicaçäo pré-anestésica. Foi obtido bloqueio completo em 70% dos casos, havendo falhas parciais em 30% deles. A maior incidência de falha ocorreu na regiäo do nervo ulnar. Em 20% dos casos, foi feita complementaçäo com bloqueio isolado de nervo ou sedaçäo, e em 10% o local da intervençäo näo se estendia pela área näo bloqueada. Näo foi registrado nenhuma complicaçäo durante o estudo
Asunto(s)
Preescolar , Niño , Adolescente , Humanos , Masculino , Femenino , Procedimientos Quirúrgicos Ambulatorios , Plexo Braquial , Urgencias Médicas , Lidocaína , Bloqueo NerviosoRESUMEN
A case of hereditary multiple exostoses successfully operated is reported. The patient, a 15 year-old white brazilian boy, was admitted with tetraplegia and Babinski's sign. Early diagnosis followed by prompt surgery may prevent permanent spinal cord damage.