RESUMO
A patient with a history of trauma to the maxillary left anterior region presented with chronic pain of unknown etiology. Root canal therapy and periradicular surgery failed to resolve the persistent pain. A second surgical procedure revealed a bone cavity superior and distopalatally to the apex of the maxillary left lateral incisor. The suspected etiology was necrotic bone removed from the bone cavity.
Assuntos
Processo Alveolar/lesões , Maxila/lesões , Osteonecrose/diagnóstico , Odontalgia/etiologia , Adulto , Doenças da Polpa Dentária/diagnóstico , Diagnóstico Diferencial , Feminino , Humanos , Incisivo , Traumatismos Maxilofaciais/complicações , Música , Osteonecrose/etiologiaRESUMO
Endodontic access cavities were prepared in forty extracted human teeth. The access cavities were obturated with Cavit and tested for leakage with methylene blue. The data suggested that at least a 3.5 mm. thickness of Cavit should be used in order to prevent leakage. Examination under the scanning electron microscope showed areas in which the constituents of Cavit were improperly mixed, which may lead to increased penetration.
Assuntos
Restauração Dentária Temporária , Polivinil , Materiais Restauradores do Canal Radicular , Cimento de Óxido de Zinco e Eugenol , Preparo da Cavidade Dentária , Humanos , Permeabilidade , Propriedades de SuperfícieRESUMO
Files, reamers, and Hedström files were used to instrument both wet and dry canals and then cleansed by a chairside technique. Statistical analysis of the various cleansing techniques showed that 2 by 2 inch gauze wipes, either wet or dry, cleansed the instruments of debris better than any other means tested.
Assuntos
Instrumentos Odontológicos , Endodontia/instrumentação , Tratamento do Canal Radicular/instrumentação , Desbridamento , Estudos de Avaliação como Assunto , Propriedades de SuperfícieRESUMO
Two hundred seventy new files, reamers, and Hedström files from three different manufacturers were evaluated for debris and defects. Statistical analysis of the new instruments showed that one company's instruments were cleaner than the other two but still contained defects. A standard for quality is proposed.
