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This study aimed to evaluate the contribution of filters of CliniView TM software on detection of vertical root fractures of multirooted teeth with intracanal metal retainers on periapical digital radiographs. For this, 22 human teeth were randomly divided into fractured group and control group, each one containing 11 teeth. The teeth were endodontically treated and after desobturation of ⅔ from the root, intracanal metallic posts were installed. The fractures were made only in the fractured group, and all teeth were x-rayed using an Express™ intraoral digital system and the images optimized in Cliniview™ software. The analysis of radiographs was made for 2 specialists with, at least, five years of experience in the area. The original images were evaluated, with application of filters Sharpen 1, grayscale inversion, emboss, vertical and vertical + horizontal, separately. After analysis, the accuracy, sensitivity, specificity, positive and negative predictive value of original periapical radiography were calculated and with the use of filters, for each evaluator. The filter "sharpen 1" had the highest accuracy (0.652) and sensibility (0,543). On the other, the filter "grayscale inversion" had the highest specificity (0.955). The interobserver kappa index was 0,351, considering p<0,001 and interobserver kappa 0,333 and 0,512 for the evaluators 1 and 2 respectively. It is concluded that the contribution of the filters is professional-dependent and, in this study, the filter "sharpen 1" contributed to all of images evaluated, differently from the filter "grayscale inversion", that disturbed the radiographic diagnosis of root fracture in multirooted teeth.

Objetivo: Avaliar a acurácia, sensibilidade e especificidade de diferentes filtros do software Cliniview™ (versão 10.1) em radiografias periapicais digitais na detecção de fraturas radiculares verticais em dentes unirradiculares. Material e Métodos: Foram utilizados 31 dentes humanos recém-extraídos divididos em dois grupos: controle (CTL) e fraturado (FTR), constituídos por 15 e 16 dentes, respectivamente. Realizou-se o tratamento endodôntico dos dentes para posterior desobturação de 2/3 da raiz e confecção dos pinos metálicos. Após cimentação dos pinos, as raízes dos dentes grupo FTR foram fraturadas na máquina de ensaio (Instron). As radiografias periapicais digitais foram obtidas em todos os dentes com sistema digital Expressä. As radiografias originais e com aplicação dos filtros (inversão na escala de cinza, hot, nitidez 1, vertical e vertical + horizontal) foram salvas e avaliadas por dois especialistas. Após as análises, foram calculados os valores de sensibilidade, especificidade, preditivo positivo, preditivo negativo e acurácia da radiografia periapical digital com e sem a aplicação dos filtros. Resultados: Considerando os dois examinadores, os maiores valores de acuraria, sensibilidade e especificidade para as imagens originais foram de 85,2%, 100% e 95,2% respectivamente. Para as radiografias com aplicação de filtro, os maiores valores de acurácia, sensibilidade e especificidade foram de 82,6%, 71,4% e 87,5%, respectivamente. Conclusão: O uso de filtros não aumentou os valores de acurácia, sensibilidade e especificidade das radiografias periapicais digitais para a detecção das fraturas radiculares verticais. De fato, pelo contrário, em alguns casos, o diagnóstico piorou.

Medical care provided by mobile units can take a long time to reachthe requested location, either due to difficulty in accessing the location,speed of traffic or even the lack of available ambulances. Inorder for more people to be treated faster and effectively, whetherits an emergency or not, this paper presents a proposal of a systemthat requests remote assistance and sends the needed materials. Topropose requirements and build the system’s graphical interface,benchmarking and focus group techniques were used. The proposedhigh-fidelity prototype indicates how the system will allowremote care to be requested through a communication interfacewith Mobile Emergency Service (SAMU) and the Fire Department,which will request the sending of a drone with a first aid kit. Inaddition, the system will allow you to specify the service to beperformed and will assist in its execution remotely