| 摘要 |
<p>A lingual bracket comprises a bracket body (1) and a flexible wing (2). The bracket body (1) consists of a bracket seat (11) and a fixed wing (12), wherein a lower surface of the bracket seat (11) is provided with anti-skid treads and the fixed wing (12) protrudes from an end of the bracket seat (11) integrally. A central axis of the fixed wing (12) is opened with a through hole (13). An end of the movable wing (2) has an arch wire hook (21), and the other end has a fixed portion (22). The fixed portion of the movable wing passes through the through hole of the fixed wing, and a spring (3) is sleeved on the section. One end of the spring (3) urges the fixed wing (12), and the other end is positioned on the fixed portion of the movable wing. The arch wire hook (21) of the movable wing (2) is capable of hooking an arch wire (4), and generates a constant orthodontic force through the spring (3).</p> |
