Репозиторий Университета

© 2018 The British Association of Oral and Maxillofacial Surgeons The only cutting technique used for osteotomies in orthognathic surgery for many years has been a saw, but recently piezoelectric surgery has been introduced as a possible alternative. The aim of this study was to find out if piezoelectric surgery can be more comfortable for patients having orthognathic surgery. A total of 25 patients with dentofacial deformities (seven male and 18 female), were treated from January 2016 to September 2017. In 11 patients, osteotomies were made using a conventional saw, while in 14 a piezoelectric device was used. The variables assessed were: operating time, postoperative swelling, postoperative pain, and cutaneous sensitivity of the upper and lower lips. The duration of operation for the piezosurgery group was significantly longer than that for controls, but the patients had less swelling at all follow-up visits, and the difference was significant at the 30-day follow-up (p = 0.045). Those who had piezosurgery had significantly less pain at the three-day follow up (p = 0.035). There was a significant difference in cutaneous sensitivity only for the right side of the upper lip and only at the one-day follow-up. We conclude that piezoelectric surgery offers some advantages in lessening swelling and the perception of pain after orthognathic surgery, but further investigations are required.

The aim of the study was to study the effect of orthognathic surgery using the developed method of correction of dentoalveolar anomalies on the shape of the nose in patients with Class III tooth-jaw anomalies, according to Engle's classification, combined with an increase and lengthening of the nose. In the period from 2014-2017 on the basis of FGBBO VO 'PIMU' of the Ministry of Health of Russia treated 45 patients with maxillofacial anomalies, among them 31 people diagnosed with upper retro microburnia, lower macrognathia, Engle III class, skeletal type. All patients were between the ages of 21 and 45, without severe co-morbidities. We evaluated the nasolabial angle (ÐCm-Sn-UL) characterizing the projection of the tip of the nose in patients with a skeletal form of mesial occlusion and an increase and extension of the tip of the nose before and after surgical treatment. According to the data of various authors, the value of the nasolabial angle in the norm varies from 97 to 110°. The mean nasolabial angle before the operation was 83.52±2.02°, which is much less than the recommended value, which indicates a pronounced elongation and 'droop' of the tip of the nose. The average value after the operation was 94, 90±1.88°, which on the average is 11° more than the initial data. These data indicate a change in the projection of the tip of the nose and an increase in the angle of Sm-Sn-UL, thereby improving the appearance of the patient.