Abstract :
A study of changes in the rate of mesialization of molars of the lower jaw after piezocorticot- omy. A clinical examination of 42 patients aged 25-40 years (mean age was 33.5 years) with defects in the dentition in the area of the first or second molar of the lower jaw was carried out while the first or sec- ond and third molars were preserved. All patients were divided, depending on the treatment, into 3 groups the first group consisted of 15 patients who underwent piezocorticotomy and placement of an or- thodontic mini-implant; the second group consisted of 10 patients who underwent splitting of the alveolar ridge and placement of an orthodontic mini-implant and the third group (control) consisted of 20 patients without surgical interventions. The patients underwent X-ray examination (cone-beam computed tomog- raphy). The rate of molars mesialization was measured every 2 weeks. The average rate of molar mesial- ization after piezocorticotomy in the first group was 0.58 ± 0.015 mm (p <0.05) every 2 weeks, the aver- age rate of molar mesialization after splitting the alveolar ridge (in the second group) was 0.83 ± 0.053 mm (p <0.05) every 2 weeks. In the third (control) group, the average rate of molar mesialization was 0.20 ± 0.009 mm (p <0.05) every 2 weeks. The results of this study confirm that piezocorticotomy is an effective method that increases the rate of molar mesialization, improves the quality and effectiveness of orthodontic treatment.
