下颌舌侧半固定扩弓矫治器的制作及临床应用

The fabrication and clinical application of semi-fixed mandibular lingual arch expansion appliance

下颌舌侧半固定扩弓矫治器由下颌磨牙带环、栓道和扩弓簧组成,将扩弓簧两末端的栓销插入栓道内可对下牙弓进行扩弓。对25例下牙弓狭窄患者的扩弓矫治表明,下颌舌侧半固定扩弓矫治器的扩弓效果良好。

Semi-fixed mandibular lingual arch expansion appliance is composed of a mandibular molar band,a keyway and arch expansion spring.The arch expansion spring are used to expand maxillary arch symmetrically or asymmetrically when bolts of the two ends are inset into keyways.Dental arch expansion appliance for 25 patients with mandibular arch stenosis showed that semi-fixed mandibular lingual arch expansion had good effect and could be used to expand mandibular arch.