RESUMO
The various abnormalities of occlusion cause significant discomfort to the patient suffering from them. Currently, the surgical treatment of malocclusion in healthy patients is a routine process. The situation is completely different when the patient has a serious disease of the respiratory or cardiovascular system - a condition which may contraindicate such treatment. A 30-year-old female patient, with a class III skeletal defect (open bite and progeny) and Eisenmenger's syndrome was chosen as a clinical case. The DDS-Pro software was selected to plan the operation. The bilateral sagittal split osteotomy of the mandible was selected as the method of surgery. At the time of the initial examination, the patient had been denied surgical treatment several times in several other clinics. Before the treatment began, the patient underwent intensive preparation in the cardiac surgery unit for 2.5 months. Using the software, a surgical intervention was planned with the production of a surgical template. The operation was then performed; the treatment period was unremarkable. The resulting occlusion and changes in the shape of the face fully met the patient's psychological and esthetic expectations. In conclusion, a complicated cardiovascular pathology does not always deprive patients with malocclusion of the possibility to undergo surgical treatment.