ABSTRACT
The aim of this study was to compare the accuracy of linear measurements of the distance between the mandibular cortical bone and the mandibular canal using 64-detector multi-slice computed tomography (MSCT) and cone beam computed tomography (CBCT). It was sought to evaluate the reliability of these examinations in detecting the mandibular canal for use in bilateral sagittal split osteotomy (BSSO) planning. Eight dry human mandibles were studied. Three sites, corresponding to the lingula, the angle, and the body of the mandible, were selected. After the CT scans had been obtained, the mandibles were sectioned and the bone segments measured to obtain the actual measurements. On analysis, no statistically significant difference was found between the measurements obtained through MSCT and CBCT, or when comparing the measurements from these scans with the actual measurements. It is concluded that the images obtained by CT scan, both 64-detector multi-slice and cone beam, can be used to obtain accurate linear measurements to locate the mandibular canal for preoperative planning of BSSO. The ability to correctly locate the mandibular canal during BSSO will reduce the occurrence of neurosensory disturbances in the postoperative period.
Subject(s)
Cone-Beam Computed Tomography , Mandible/diagnostic imaging , Mandible/surgery , Osteotomy, Sagittal Split Ramus , Tomography, X-Ray Computed , Anatomic Landmarks , Humans , In Vitro Techniques , Reproducibility of ResultsABSTRACT
El quiste óseo simple, es una cavidad intraósea sin recubrimiento epitelial, siendo considerado un pseudoquiste. Clínicamente, la lesión suele ser asintomática y descubierta por casualidad en un examen radiológico de rutina. Su etiología y patogenia no están aun definitivamente establecidas. El tratamiento tradicional consiste en realizar una exploración quirúrgica y curetaje de la pared ósea. En este artículo se presenta un caso de quiste óseo simple localizado en la sínfisis mandibular, de dimensión mediana, que acomete a un paciente de sexo masculino de 14 años de edad, revelando datos clínicos, aspectos diagnósticos, imagenológicos, así como su tratamiento (AU)
The simple bony cyst is an intraosseous cavity without epithelial lining, being considered a pseudocyst. Clinically, the lesion is usually asymptomatic and discovered by accident in a routine radiological examination. Its etiology and patogenesis are not yet definitely established. The traditional treatment consists of realizing a surgical exploration and curettage of the bony wall. This article presents a case of simple bony cyst located in the mandibular symphysis, of median dimension of a masculine patient of 14 years of age, describing clinical, diagnostic aspect, imaging, as well as the treatment (AU)
