face bow

METHODS: Three-dimensional face bow was designed to measure the projection of zygoma, the eyes, and width of the face. Then it was used for 5 patients with comminuted or delayed zygomatic and arch fractures to evaluate the clinical effects.

方法：设计并制作可用于测量颧骨突度、面侧方宽度以及眼球突度的三维定位面弓，用于颧骨颧弓粉碎性骨折和陈旧性颧骨骨折共5例，评价其临床应用效果。

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Do not let their weakness in the face of failure bow, in the face of suffering and tears were not, in the face of opportunities and challenges around the center not!

让自己面对失败不要软弱地低头、面对分别不要痛苦地流泪、面对机遇和挑战不要左右难舍！

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PURPOSE: To design a three-dimensional face bow and use it in pre-diagnosis, guiding reduction in operation and post-operative evaluation of zygomatic fractures.

目的：设计研制三维定位面弓，并对其用于颧骨骨折的术前诊断、术中复位校准以及术后效果进行评价。

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Design and application of the three-dimensional face bow in the zygomatic fractures

三维定位面弓的设计及其在颧骨骨折复位中的应用

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METHODS: 17 cases with skeletal Class ⅱⅰ malocclusion were included, all cases were treated with Twin-block appliance combined with face bow and intermaxillary elastic. The methods of bite construction, fabrication of the application were introduced.

方法：17例骨性ⅡⅠ类错牙合的生长发育期患者，应用Twin-block功能矫治器配合口外弓及颌间牵引治疗，进行咬合重建。

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Methods: 15 cases whose molars were distalized with face bow were selected in present research.

方法：选取使用口外弓推磨牙的病例15例。

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When the directions of the maxillary distally directed orthopedic forces from upper first molars by face bow were+ 30 °~-30 ° the maxilla rotated in clockwise sense and the extent of rotation gradually increased.

后牵引的牵引角度由+30°～-30°时（用口外弓从上第一磨牙牵引），上颌骨呈顺时针旋转，旋转的量逐渐增大。

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CONCLUSION: The Twin-block appliance combined with face bow and intermaxillary elastic was very effective on improving mandible growth and inhibiting maxilla growth, the sagital relationship between the upper and lower jaws was more compatible, the profile was improved.

结论：Twin-block功能矫治器配合口外弓及颌间牵引，能有效抑制上颌生长而促使下颌向前生长，使上、下颌骨的矢状不调得到最大程度的矫正，患者侧貌得到明显改善。

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Three dimensional orientation face bow was used to evaluate the symmetry of facial shape in the time of 4-6 months after operation.

术后4～6个月，用三维定位面弓对面部软组织外形进行测量，观察患者面形是否对称。

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Conclusion: Distalizing molars with face bow can lead to mild root resorption.

结论：口外弓推磨牙远移会造成牙根吸收，但吸收量较微小，在临床可以接受的范围内。

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All of them seldom used face-bow, 61.11% have never used face-bow, 38.89% believed disuse of face bow might lower the quality of complete denture.

所有医生均不常用面弓，61.11%从未用过面弓。

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