Kennedy David B
Pediatr Dent. 2007 Jul-Aug;29(4):327-9.
Ectopic eruption of permanent first molars occurs infrequently and causes some resorption of the adjacent primary second molar. The primary second molar can be used as an anchor tooth for the Halterman appliance to disimpact the permanent first molar, provided root resorption is not extreme. A modification of the Halterman appliance is a reverse band and loop appliance with a bonded button on the permanent molar and chain elastic for disimpaction. The purpose of this report was to suggest tips regarding placement and clinical management of this modified Halterman appliance design.
恒牙第一磨牙异位萌出并不常见，会导致相邻乳磨牙发生一定程度的吸收。如果乳磨牙牙根吸收不太严重，可将其作为Halterman矫治器的支抗牙，用于助萌恒牙第一磨牙。Halterman矫治器的一种改良形式是反向带环圈矫治器，在恒牙磨牙上粘结纽扣并使用链状弹力圈进行助萌。本报告的目的是就这种改良的Halterman矫治器设计的放置和临床管理提出一些建议。
