Variación de longitud en incisivos inferiores comparadas mediante dos medios diagnósticos

Abstract

Introduction: The analysis of tooth length is of great importance to perform diagnostics, treatments and successful follow-ups in the different areas of dentistry such as endodontics, orthodontics, periodontics, rehabilitation, among others. The morphology and length of the anterior lower teeth shows great variety, so the clinician requires high-resolution equipment and software with reliable tools. Currently, digital technology has designed various equipment that allows the clinician to approximate the real measurements, including digital periapical radiography and CBCT, however it is necessary to corroborate if these measures are reliable. Objective: To compare the variability of the longitudinal measurements obtained from the digital periapical radiography and the cone beam tomography in permanent lower incisors and to determine the average length. Materials and methods: Descriptive observational cross-sectional study in 179 teeth characterized as lower incisors taken from the bench of permanent human teeth of the university Santo Tomas, with complete crown, free of decay and with consent of donation. The selected teeth were treated with the respective disinfection protocol. Periapical digital radiography with phosphor plate was performed using the Fona XDC and CBCT equipment with the I-CAT tomography. The measurement of each dental piece was made using the measuring tool of each of the equipment and, lastly, each of the structures was measured with digital caliper considering this measure as Gold standard, taking the point as reference for all measurements upper and middle of the structure and the root apex. Results: In this study, it was found that there are significant differences between the measurements between CBCT and digital periapical radiographs. Observing an underestimation of the dental length with CBCT of -0.25mm purchased with the actual length and an overestimation of 0.25 mm with digital periapical radiography images. Conclusions: In the present study, we found an underestimation by CBCT and an overestimation by digital RP. Always an underestimation of the measure directs us towards a more suitable conduit preparation without exceeding the total dental length. The results found indicate that CBCT may be more recommendable to obtain more precise measurements for the success of endodontic treatment.