Assuntos
Tratamento do Canal Radicular/efeitos adversos , Irrigação Terapêutica/efeitos adversos , Odontalgia/etiologia , Cânfora/efeitos adversos , Clorofenóis/efeitos adversos , Combinação de Medicamentos/efeitos adversos , Formocresóis/efeitos adversos , Humanos , Peróxido de Hidrogênio/efeitos adversos , Hipoclorito de Sódio/efeitos adversos , Água/efeitos adversosRESUMO
A total of 244 paired samples were obtained from sixty-one root canal systems at four specific stages of endodontic treatment. Half the samples were placed in a commonly used endodontic medium and incubated aerobically. The remaining samples were placed in PRS medium and incubated in an anaerobic environment. The rereduction procedure, used to remove oxygen entering the PRS medium at the time of insertion of the sample, was not employed. A statistical analysis of the results indicates that the non-rereduced PRS medium is not as sensitive as rereduced PRS and offers no significant advantages over trypticase soy broth with 0.1 percent agar.
Assuntos
Bactérias/isolamento & purificação , Meios de Cultura , Cavidade Pulpar/microbiologia , Tratamento do Canal Radicular , Aerobiose , Anaerobiose , Preparo da Cavidade Dentária , Reações Falso-NegativasAssuntos
Doenças da Polpa Dentária/veterinária , Doenças do Cão/cirurgia , Pulpectomia/veterinária , Tratamento do Canal Radicular/veterinária , Animais , Instrumentos Odontológicos/veterinária , Cães , Guta-Percha , Obturação do Canal Radicular/métodos , Obturação do Canal Radicular/veterinária , Tratamento do Canal Radicular/instrumentação , Tratamento do Canal Radicular/métodosRESUMO
Asymptomatic teeth were cultured at four specific stages of endodontic therapy, yielding 148 paired samples. Half of the samples were incubated anaerobically with the use of a new medium, and half were incubated aerobically with the use of a commonly employed endodontic medium. The former proved to be significantly more sensitive in supporting microbial growth from root canals. The results indicate that an aerobic culturing technique alone is not sufficient to reflect the microbiologic status of the canal system.
Assuntos
Bactérias/isolamento & purificação , Meios de Cultura , Cavidade Pulpar/microbiologia , Tratamento do Canal Radicular , Aerobiose , Anaerobiose , Células Cultivadas , Estatística como AssuntoRESUMO
Sections of silver cones were implanted in tibial bone wounds in 36 Sprague-Dawley rats. Groups of six rats each were killed at monthly intervals, and the specimens were examined by scanning electron microscopy and by X-ray microanalysis. The silver cones had corroded rapidly, but they were well tolerated by the tissues. Elements of silver, chlorine, and sulfur were found in the tissues adjacent to the implants.
