Efectividad diagnóstica de reabsorción cervical externa utilizando tomógrafos computarizados de haz cónico. UCSG semestre A- 2019.

Abstract

Introduction: External cervical resorption (CER) is a lesion that manifests in the cervical portion of the tooth and causes a defect in the dental level, damage to the periodontal ligament and subepithelial cement. Its etiology is unknown. The diagnosis must be by computed tomography. Aim: Provide information on external cervical resorption by comparing different specific dental tomographs in the city of Guayaquil so that professionals and students can make a correct diagnosis thus favoring the treatment of the case, to the patient a favorable prognosis for the piece. Materials and methods: External cervical resorption lesions according to the three-dimensional classification of Patel et al. 2018 were simulated in 42 lower premolars. Plaster arches were made where they were submerged for later visualization by CBCT conical beam CT scan. A total of 126 images 3 were analyzed for each tooth to see the lesion in the axial, sagittal and coronal plane. It uses 3 models of MyRay Hyperion X9, Veraview X800 and NewTom Go and FOV tomographs of 5x5 cm, 4x4 cm and 6x7cm respectively. Results: According to the effectiveness of the field of vision (FOV) to diagnose the RCE according to the tomography cuts, it was found that the most reliable is 5x5 cm with 76.19% corresponding to tomograph A, followed by the FOV of 6x7 cm with 73.81% of tomograph B and finally the 4x4 cm with 66.67% belonging to tomograph C.). Within the different sections of the tomography in which the extent of the lesion was best observed, it was axial with 83.33% of the images diagnosed, followed by the coronal and sagittal with 73.81% and 59.52% respectively. Conclusion: The lesions of RCE extend along the root and in a transversal way, so it is important to analyze the piece in all its cuts and with small fields of vision so as not to lose any detail and select the best treatment.