Đánh giá hiệu quả di chuyển răng theo 3 chiều không gian bằng vít neo giữ

Minivis anchorages have a significant effect on dental movement, especially in case of maximum anchorage cases require, or case of vertical anchorage require. The study shows a big advantage of minivis in maximum anchorage case event it can help to move distally the whole maxilla or mandibular teeth. The maximum distal movement of upper incisors is 9 mm, the one of lower incisors is 7 mm, lower fist molar is 7 mm, upper fist molar is 6 mm. maximum dental impaction of upper molars is 3 mm and upper incisors is 2 mm.