An orthodontic appliance comprises a base portion adapted to be affixed to a patient’s tooth and an upper portion including a flexible and resilient hook for forming a tubular channel for receiving an archwire. The upper portion includes a flange affixed to the hook, and is sized and shaped to connect to loops of an elastomeric power chain.一種包含一座部及一上部的齒列矯正器，該座部經調適以固定至一患者的牙齒，該上部包括一可撓且彈性的鉤件以供形成一管狀通道，該管狀通道用以接收一矯正弓線。該上部進一步包括固定至該鉤件的一凸緣，且該上部經調整大小及形狀以連接至一彈力鏈的線圈。
