Em Cirurgia Ortognática, Expansão Cirúrgica da Maxila

Luis Pagotto, et al.
Journal of Oral and Maxillofacial Surgery
Volume 65, Issue 9, Supplement, Pages 43.e108–43.e109, September 2007
Impact Factor: 1,28
DOI: 10.1016/j.joms.2007.06.461

Abstract:

Statement of the Problem: Compare and analyze the results of the surgical techniques, simplified and Le Fort I “subtotal” that can be performed for the maxillary surgical expansion.

Materials and Methods: Both male and female patients were chosen, 12 male and 08 female, ranging from 20 and 36 years old, regardless of their race, that couldn’t submit only to the maxillary orthopedic and transversal expansion. All surgeries were performed under general anesthesia by the same practitioner. The simplified sur- gical technique was performed in 10 patients (group-A). The Le Fort I “subtotal” surgical technique was per- formed in the other 10 patients (group-B). Both patients from (group-A) and (group-B) had the Hyrax palate-split- ting appliance previously assembled. All the patients (group A and B) were submitted to the same palate splitting appliance activation, being 2 mm during the surgery and from the fourth say after surgery, and 1mm daily divided in two activations. The measures were taken with a caliper straight into the patient’s oral cavity, among the mesiolingual cusp of the upper right and left first molars before the surgery and immediately after the end of activation.

Method of Data Analysis: A prospective study performed during June 2004 to August 2005, 20 surgeries were carried out for the maxillary transversal expansion.

Results: (Group-A) – The maxillary transversal expan- sion planned was obtained in the 10 cases. The average of maxillary transversal expansion was 9.05 mm. The mean time for activating the palate-splitting appliance was 9.3 days. A complication was observed due to the palate splitting appliance breakage. (Group-B) – The maxillary transversal expansion planned was obtained in the 10 cases. The average of maxillary transversal expan- sion was 8.82 mm. The mean time for activating the palate-splitting appliance was 8.8 days. A complication was observed where the patient presented a hematoma in jugal region immediately after surgery.

Conclusion: Although this study sample was relatively small, we observed that not only the simplified surgical technique but also the Le Fort I “subtotal” were efficient to the accomplishment of the maxillary transversal ex- pansion previously wanted.

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