Aggressive unicystic ameloblastoma affecting the posterior mandible: late diagnosis during orthodontic treatment.

Maxillofacial images must be examined to find pathologies not identified during clinical examination. Unicystic ameloblastoma (UA) extending to the mandibular body and ramus was neglected on initial panoramic radiographic examination. After orthodontic therapy, a huge lesion was observed clinically and through imaging exams. After the conservative surgery, no recurrence was observed during five years of follow-up. This case emphasized the need for careful evaluation of patient images focusing on the oral diagnosis before any dental treatment planning, including orthodontic therapy.

Importancia y aplicaciones del sistema de Tomografia Computarizada Cone-Beam (CBCT) / Importance and aplications of Cone-Beam Computed Tomography (CBCT)

Actualmente el sistema de tomografia computarizada Cone-beam(CBTM) puede ser empleada en el mundo médico y odontologico. Este sistema tiene como principio un algoritmo que corrige las deformidades e inestabilidades de las imágenes tomográficas computarizadas posibilitando mejor visualización y mayor exactitud en imágenes de tumores o áreas de interés profesional. Desta forma, el profesional consigue localizar fácilmente, con un minino de error, el local de interés para tratamientos quirúrgicos, radioterápicos y otros, permitiendo un mejor planeamento a sus pacientes

The cone-beam computed tomography (CBCT) has been applied to Dentistry and Medicine all over the world. This system is based on an algorithm which corrects the deformities and instabilities of the tomographic images, providing a more precise visualization of tumors and regions of interest. Therefore, the professional will easily localize, with a minimum degree of mistake, the target for surgical and radiotherapic treatments, among others, and achieve a better treatment plan for the patient

Atualmente o sistema de tomografia computadorizada Cone-beam (CBCT) vem sendo empregado em todo o mundo na Medicina e na Odontologia. Este sistema baseia-se em um algoritmo que corrige as deformidades e instabilidades das imagens tomográficas computadorizadas possibilitando assim visualizar com maior precisão as imagens de tumores ou áreas de interesse para o profissional. Desta forma o profissional consegue localizar facilmente, com mínimo de erro, o alvo de interesse para tratamentos cirúrgicos, radioterápicos, entre outros; permitindo um melhor plano de tratamento aos seus pacientes

Influence of the facial pattern on ANB, AF-BF, and Wits appraisal.

AIM: To assess the correlation between Wits and AF-BF appraisals with the ANB angle, and verify the influence of the facial type on these appraisals. METHODS: Lateral cephalometric radiographs from 118 untreated individuals were separated into 3 groups according to the facial pattern (brachyfacial, mesofacial, and dolichofacial). The radiographs were digitized and submitted to ANB angle and Wits and AF-BF appraisals on computer software. All radiographs were retraced for intraobserver and interobserver error tests. RESULTS: The Student's t test demonstrated no statistically significant differences on the intraobserver's test (P > .05). There were statistically significant differences in the readings of Wits values of the 3 groups and for AF-BF values in the brachyfacial and mesofacial groups (P <.05). The multiple linear regression tests demonstrated high correlation between ANB and AF-BF for the 3 groups (r2, 0.768). The same result was found for ANB and Wits (r2, 0.624). CONCLUSION: Facial pattern does not have an influence on the correlation between ANB and AF-BF nor between ANB and Wits, but it does influence the measurements of ANB, AF-BF, and Wits.