| 摘要 |
A lateral adjustment unit consists of at least one aligning assembly, a threaded body (12), and front connecting arms (13) that end in bands. For simultaneous movement of the right first bicuspid and right first molar, either forward or backward, the front connecting arms are detached from the threaded body. A right distal adjustment unit (2) consists of at least one aligning assembly (21), a threaded body (22), a right back connecting arm (23) that ends in a band (231), is permanently mounted to the threaded body (22) at one end, and is affixed at the right first molar at the other end. For simultaneous movement of the left first bicuspid (B4) and left first molar (B6) either forward or backward, a left distal adjustment unit (3) is provided consisting of at least one aligning assembly (31), a threaded body (32), a left back connecting arm (33) that ends in a band (331), is permanently mounted to the threaded body (32) at one end, and is affixed at the left first molar at the other end. A fixed right vertical connecting arm (24) and a left vertical connecting arm (34) are provided on both sides between the front connecting arms and the back connecting arms, linking them together. |
