导弓式矫治器的改进与应用张苗苗，邵，李欣反是儿童常见的牙畸形，必须及早矫治。然而由于乳前牙根大部分吸收、乳前牙松动、乳前牙残冠残根、恒前牙萌出不全、下牙固位不良等诸多因素，致使乳、替牙期的反治疗常受到阻碍，针对这些不利因素，我们将导弓式矫治器进行了改... Guiding bow appliance improvement and application Zhang Miao, Shao, Li Xin Anti-children is a common tooth deformity, must be corrected as soon as possible. However, due to the absorption of most of the root anterior root of milk, loose anterior teeth of milk, residual crown of anterior teeth of crown of milk, eruption of permanent anterior teeth, inferior teeth and many other factors, resulting in milk, anti-tooth therapy often hindered, In view of these unfavorable factors, we will change bow-type appliance ...