Objective To introduce a new kind of bracket and contrast the friction forces to self-lockingbracket developed recently.
目的:介绍一种新式托槽并对新研制自锁托槽的摩擦力进行对比研究。
Most scholars believed that self-lockingbracket appliance reduced the friction between the brackets and the arch wire and was more suitable for the sliding mechanism, so that light force correction could be realized and brought the doctor new ideas.