牙齿矫正唇弓的不同设计

liuhong

retractive canine loop唇弓（不好翻译）
另一种唇弓的设计，可以维持切牙的位置

Andresen loop唇弓（后移尖牙）
The labial bow with intrusion hooks带压低前牙功能的唇弓
各种改良唇弓（焊有各种弹簧或曲）

前牙采用链圈内收

Elastics can also be installed vertically. They allow the extrusion of retained teeth. The elastics are engaged on soldered or bent-in devices of the labial bow, on to a bonded attachment on the tooth.

For tooth movements in different directions, springs can be soldered on.

Two loops integrated into the labial bow allow the engagement of vertical elastics to align incisors.

A hook is soldered on the loop of the labial bow to engage vertical elastics for the alignment of canines.

Two hooks are soldered in opposite directions on the labial bow to rotate an incisor with elastics.

片段唇弓纠正个别牙

The individual labial bow is contoured along the gingival margin contacting the anterior teeth cervically and is led by a canine loop into the retention.

A labial bow bent circularly, combined with Adams clasps and a base plate, to form a retainer involving the whole arch. 颌间唇弓