By studying breaking mechanism of normal super-hard composite button,it is put forward that a optimize design to the form of super-hard insert button,and studies breaking mechanism of super-hard insert button,then educes reasonable relation formula of rabiuses between double domes super-hard insert button.

Modified milliard s repairing bilateral cleft lip;

Reconstruction to labial tubercle and labial margin of bilateral cleft lip with muscle-vermilion labial margin flap of lateral lip;

Repair of secondary vermillon tubercle defect in bilateral cleft lip;