Thanks to the nature of absolute anchorage from the microimplants, the teeth can be moved not by one by one movement but by group movement. With moving teeth with group, the teeth experience less adverse movement, such as rotation and tipping, and it shorten treatment time. Furthermore the movement which was very hard or impossible with conventional mechanics is now one of routine procedure with the microimplants. Speaker will discuss the efficiency of the microimplants and the way to maximize the efficiency of the microimplants in treating various types of malocclusion.