固定舌侧丝保持器主要用于矫治后前牙的保持。具有隐蔽 ,不影响美观 ;能减小病人长期合作的需要等优点 ,是目前较为常用的保持方法。但在以往的制作粘结方法中 :用直接法时 ,在模型上弯制好的弓丝 ,转移到口内时弓丝易在牙面上滑动 ,难准确定位 ,又不易操作 ,因此影响了弓丝的 Fixed lingual silk holder is mainly used to maintain the anterior teeth. Has hidden, does not affect the appearance; can reduce the need for long-term patient cooperation, etc., is the more commonly used to maintain. However, in the past, the production of bonding method: the direct method, the model curved bow wire, transferred to the mouth when the bow wire easy to slip on the tooth surface, it is difficult to accurately locate, and difficult to operate, thus affecting the bow Silk