RESUMEN
Objective: it was to evaluate intra- and interexaminer reliability and reproducibility of linear measurements in cone-beam tomography (CBCT) images. Materials and Methods: CBCT scans were obtained from 50 patients of a private clinic. Two examiners located the landmarks twice in two-dimensional and three-dimensional images on different days, with images performed 1 week apart. Intra- and interexaminer reproducibility and reliability were analyzed. Results: the measurement error (ME) did not show significant differences between intra- and interexaminers. The intraclass correlations (ICC) between the intra- and interexaminer readings obtained with the different methods showed almost perfect matches. The results demonstrated high examiner reproducibility for linear and volumetric parameters with high intraclass correlation coefficient (ICC) and coefficient of variation (CV). The ICC showed that the methodology was highly reliable and reproducible (ICC- >0.99 and CV <1.5%). Conclusion: the measurements demonstrated strong agreement between examiners and significant reliability and reproducibility. Therefore, this methodology can serve as a standard for linear measurement analysis of the topography of mandibular canal and osseous adjacent structures.
Asunto(s)
Tomografía Computarizada de Haz Cónico/métodos , Humanos , Mandíbula/diagnóstico por imagen , Reproducibilidad de los Resultados , Topografía MédicaRESUMEN
The aim of this study was to evaluate, by the use of clinical and radiographic records, the prevalence of internal resorption in anterior permanent teeth of patients from the Clinic of Specialization in Endodontics of Federal University of Pernambuco, Brazil; related to the period of September of 2001 to June of 2007. 888 medical records from the archives of the clinic were analyzed. Among them 232 referred to anterior teeth. The presence and the location of the resorption were radiographically observed. The obtained results verified that the internal resorption was prevalent in 2.16 percent of the cases, with 0.86 percent located in coronal region, 0.44 percent in root region and 0.86 percent in both regions. We concluded that, despite of being a pathology of low incidence, the knowledge of it is important to the specialist, in order to provide a reliable diagnose and to plan a suitable treatment, once the negligence in a case of internal resorption in anterior permanent teeth can cause the loss of dental element and functional and esthetic alterations in the patient.
El objetivo del estudio fue evaluar, a través de fichas clínicas y radiológicas, la prevalencia nacional de reabsorción interna en los dientes anteriores permanentes de los pacientes con atención en la Clínica del Diplomado de Endodoncia de la Universidad Federal de Pernambuco, en el período entre septiembre de 2001 y junio de 2007. Se analizaron 888 prontuarios de los archivos de la Clínica. De ellos, 232 estaban relacionadas con los dientes anteriores. Se observó radiográficamente la presencia de reabsorción y su ubicación. Los resultados mostraron que la reabsorción interna fue prevalente en 2,16 por ciento de los casos, de los cuales en 0,86 por ciento estaba ubicada en la región coronaria, 0,44 por ciento en la raíz y 0,86 por ciento en ambas regiones. Se concluye que aún en caso de una enfermedad con baja incidencia, es importante para el especialista conocerla, haciendo un buen diagnóstico y una planificación para el tratamiento adecuado a la situación, ya que la de negligencia ante un caso de reabsorción interna en dientes permanentes anteriores, conduce a la pérdida del elemento dental, causando cambios funcionales y estéticos para el paciente.