This study evaluated the effectiveness of three disinfectants used in Dentistry for decontamination of gutta-percha cones. Sixty gutta-percha cones were contaminated with standardized pure cultures of five species of microorganisms (Enterococcus faecalis ATCC 29212, Staphylococcus aureus ATCC 25923, Candida albicans ATCC CBS-ICB/USP 562, Bacillus subtilis spores ATCC 6633 and Streptococcus mutans ATCC 25175). The cones were treated with 10% polyvinylpyrrolidone-iodine aqueous solution (PVP-I; Groups 1 and 2), 5.25% aqueous sodium hypochlorite (Groups 3 and 4) and paraformaldehyde tablets (Group 5). All chemical agents were efficient for the cold sterilization of gutta-percha cones in short time periods.

This ex vivo study evaluated the quality of digital radiographic images obtained with the photostimulable phosphor plate system (Digora) according to the processing delay and maintenance of optical plates in either opaque (supplied with the system) or transparent protective plastic cases during this period. Five radiographs were obtained from the mandibular molar region of a dry human mandible using optical plates. These plates were placed in the protective plastic cases before obtaining the radiographs and were processed immediately or after processing delays of 5, 60 and 120 min, when the case was removed. The results revealed a reduction in image quality when processing was delay 120 min compared to the other times. The opaque case provided better protection to the sensor than the transparent case. In conclusion, a 120-min processing delay for the Digora system caused a reduction in image quality, yet without interfering with the quality of diagnosis. The opaque case supplied by the system's manufacturer provided better protection to the optical plate than the transparent case.

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Evidências revelam que a radioterapia tem sido empregada no tratamento das lesões malignas de cabeça e pescoço com melhorias relevantes na sobrevida dos pacientes, todavia está concernente a reações adversas que atingem a qualidade de vida dos pacientes a ela submetidos, o que pode modificar a evolução do tratamento. A incidência dessas reações depende da dose frequência da radioterapia, local irradiado, idade, condições clínicas do enfermo e tratamentos relacionados. (GAETTI- JARDIM, 2011). A radioterapia tem um potencial mais grave quando comparada a quimioterapia. Entre as anomalias radioterápicas mais comuns encontrados em crianças estão os distúrbios ósseos, agenesias dentárias, microdontias, defeitos de esmalte e, acima de tudo, malformações radiculares e coronárias. (PG. MOREIRA, 2020). Devido a importância da temática, realizou-se o estudo com o objetivo de fazer um relato de caso e uma análise de dados comparativos com comprovações epidemiológicas de pacientes submetidos a radioterapia de cabeça e pescoço.