Avaliação radiografica da posição condilar em pacientes submetidos a osteotomia Le Fort I para avanço maxilar / Radiographic assement of the condylar position in patients submitted to le Fort I osteotomy to advance the maxilla

AUTOR(ES)
DATA DE PUBLICAÇÃO

2005

RESUMO

It was realized a prospective radiographic study of the angulation and position of the mandibular condyle, by means of submento-vertex radiograph and conventional tomography of the temporomandibular joint (TMJ). For the study, it was selected eleven patients who were referred to the Division of Oral and Maxillofacial Surgery of Piracicaba School of Dentistry ? Unicamp, for surgical correction of dentofacial deformity. All patients were under preparatory orthodontist therapy to surgical procedure and had the same diagnoses of anterior-posterior deficiency of maxilla, in which the final surgical goal, after facial analysis, model analysis and predictive radiographic tracings, was the Le Fort I osteotomy to advance the maxilla. The radiographic images were taken at the immediate preoperative, immediate post-operative (1-2 weeks) and late post-operative (minimum of 6 months). It was measured the axial angulation of the condyles and the linear measurements for the tomographic images, over the posterior, superior and anterior articular spaces in the maximal intercuspation and rest position, and the maximal opening, for the three periods. Tomographic images with the tracings were digitized and measured by means of a computer software (UTHSCSA Image Tool 3.0), after its adequate calibration. Data analysis was collected three times, with a minimum of 24 hours between them and, after that, the mean value was submitted to statistical analysis (ANOVA ? 5% of significance). The results were not statistically significant for the linear measurements of the articular spaces in any of the periods, as well as for the axial angular measurements of the condyles. In the maximal opening, there was significant difference (decrease of opening) for the immediate post-operative period, for both sides. In conclusion, Le Fort I osteotomy for maxillary advancement did not cause any significant changes in this specific group of patients evaluated

ASSUNTO(S)

radiography temporomandibular joint cirurgia radiografia surgery articulação temporomandibular

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