RESUMO
OBJECTIVE: To assess the detection of simulated periapical lesions in digital intraoral radiography with different levels of brightness and contrast combinations, and to investigate the observers' preference of image quality for this diagnostic task. METHODS: Digital radiographs were acquired prior to periapical lesion simulation and after each one of four defects enlargement. Original images were adjusted in 4 brightness and contrast combinations. Five observers evaluated the images according to the presence of periapical lesion on a 5-point scale. In a second moment, the observers ordinated the images subjectively, according to quality, from the best to the worst to detect the bone defect. The area under the receiver operating characteristic curve was calculated for the diagnostic values and compared by two-way ANOVA. The significance level was set at 5% (P<0.05). RESULTS: No differences were found between the diagnostic values of the five combinations of brightness and contrast (P>0.05). The overall results showed low values of area under the Receiver Operating Characteristic (ROC) curve and sensitivity of the periapical radiography in the detection of periapical lesions of sizes from 1 to 3, which rose substantially in size 4. For image quality, combinations with the lowest brightness and highest contrast were preferred by the observers in 58% of the cases. CONCLUSION: Brightness and contrast adjustments do not influence the detection of simulated periapical lesions in digital intraoral radiography. Lower brightness and higher contrast images were preferred for this diagnostic task.
RESUMO
Introducción: el diagnóstico en endodoncia incorporó los estudios de tomografías de haz cónico (CBCT). Esnecesario entender el alcance y la utilidad de estos para saber cuándo solicitarlos. Objetivos: el objetivo de este estudio fue determinar la indicación de CBCT previa al tratamiento endodóntico y su relación con el nivel de dificultad del caso atratar. Métodos: se seleccionaron al azar 15 casos clínicos de alta dificultad derivados a tratamiento de endodoncia.Se realizó diagnóstico clínico y radiográfico. Se estimaron los recursos necesarios para el tratamiento con unformulario diseñado para ello. Se solicitó un estudio de CBCT. Una vez obtenido el estudio, el mismoprofesional que realizó el diagnóstico clínico navegó el software de visualización y llenó nuevamente el formulario. Fueron comparados los formularios previos y posteriores a las CBCT. Se establecieron las diferencias encontradas entre ellos. Resultados: todos los casos analizados tuvieron diferencias en la comparación entre los formularios. Conclusiones: el uso de CBCT en los casos de elevada dificultad permite un diseño de plan de tratamiento más preciso.
Introduction: the endodontic diagnosis includes the study of cone beam tomography (CBCT). It is necessary to understand the scope and usefulness of CBCTto know when to request it.Objectives: the aim of this study was to determine the requirement of CBCT before endodontic treatment and its connection with the level of difficulty that the case presents. Methods: 15 endodontic cases of high difficulty were taken randomly. Clinical and radiographic diagnosis was made. The necessary resourcesfor the treatment were estimated according to aspecially designed form. A CBCT study was request. Once the study was obtain, the same professionalwho performed the clinical diagnosis browsed the software to read CBCT results and filled a new form.Both CBCT forms need to be compared to establish differences between them. Results: all the cases analysed were compare, andshowed differences between the two forms. Conclusion: the use of CBCT in high difficult cases provides a more accurate design of the treatment plans.
Assuntos
Humanos , Tomografia Computadorizada de Feixe Cônico/métodos , Planejamento de Assistência ao Paciente , Tratamento do Canal Radicular/métodos , Doenças da Polpa Dentária/diagnóstico por imagem , Tomada de Decisão Clínica , Diagnóstico Clínico , PrognósticoRESUMO
Central odontogenic fibroma World Health Organization (WHO)-type (OFWT) is a rare lesion that has differential diagnosis with other radiolucent periapical lesions. It has a slow growth and is usually an asymptomatic lesion found in routine examinations. We report a case of a central OFWT occurring in the maxilla, for which the first symptom was teeth mobility, simulating a periodontal condition. A 54-year-old woman, with superior premolar mobility, was referred to our clinic. An oral examination showed teeth vitality and advanced periodontal disease. Radiography showed a unilocular radiolucent area between the left superior lateral incisor and first left molar, with bone reabsorption. The granulomatous tissue was removed and microscopic examination revealed cellular connective tissue with multiple islands of odontogenic epithelium, covered by stratified squamous epithelium, confirming the OFWT diagnosis. The central OFWT is a non-aggressive lesion, with rare recidivism. Biopsy is an important procedure for correct diagnosis and treatment, as some radiolucent lesions can lead to misdiagnosis.