Investigation of the force reactions’ magnitude around the mounts of orthodontic appliances in the process of orthodontic treatment of children with congenital unilateral cleft lip and palate

For the purpose of orthodontic treatment children with congenital cleft lip and palate, various constructions are used. The use removable appliances indicated for narrowing or shortening dental arches, anomalies individual teeth position. question determining magnitude force reactions around special devices (clasps) that designed to fix on during treatment, under conditions specificity development upper jaw impact surgical interventions it, requires detailing, which determined this research. A three-dimensional 3D simulation model was created based digital data spatial geometry a sample appliance used unilateral palate. Mathematical modeling methods were study stress-deformed state estimate magnitudes distribution amplitudes its fasteners (clasps). Force supports when screw is rotated from 0° 360° (axial movement by 1 mm) unevenly distributed, minimum value 10.3 N maximum 30.9 N. It noted in area placed more distally, values higher (30.9 27.6 N) than medially (10.3 12.5 N). also worth noting side base appliance, corresponds location small fragment jaw, greater large (27.6 significant dependence stiffness characteristics type transmission areas established. Keywords: model, reactions, clasps.