Hawley保持器广泛的用于错矫治完成后的保持。是一种简便有效的保持方法。最早的Hawley保持器，它是由一对后弓，一对磨牙卡及塑料基托组成．由于双曲唇弓弓丝粗，赵治后容易使邻牙分离，使牙弓的连续性追到破坏，当第二磨牙牙冠短时，因位卡杯收效不大。改良后的Hawle罗保持器 Hawley retainers are widely used to hold after the correction is completed. Is a simple and effective way to maintain. The earliest Hawley Holder, which consists of a pair of back bows, a pair of molars and a plastic base. Due to the hyperbolic lip bow arch wire, Zhao governance is easy to make adjacent teeth separation, continuity of the dental arch to chase the destruction, when the second molars crown short, little effect because of bit card cup. Improved Hawle Lo holder