THE TWIN BLOCK TRACTION TECHNIQUE
THE TWIN BLOCK TRACTION TECHNIQUE
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DOI：
10.1093/ejo/4.2.129
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发表时间：
1982-01-01
影响因子：
2.6
通讯作者：
CLARK, WJ
中科院分区：
文献类型：
--
作者：
CLARK, WJ
双块牵引技术结合了功能和牵引系统，以实现快速纠正弓关系的II类错。改善面部平衡表明在严重的II类骨性错牙合中快速的骨骼适应。双块是上下咬合块以45°的角度互锁，引起功能性下颌移位。concorde面弓结合口外牵引和颌间牵引，通过从下矫正器到面弓的水平颌间弹性。如果患者在夜间未能保持正确的咬合位置，可以通过增加颌间牵引力来补偿。反向双块用于治疗选定的III类错牙合。
The twin block traction technique combines functional and traction systems to achieve rapid correction of arch relationships in Class II malocclusion. Improved facial balance indicates rapid skeletal adaptation in severe Class II skeletal malocclusions.Twin blocks are upper and lower bite blocks which interlock at an angle of 45° causing a functional mandibular displacement. The concorde face bow combines extra-oral traction with intermaxillary traction by means of a horizontal intermaxillary elastic from the lower appliance to the facebow. If the patient fails to posture in the corrected occlusal position during the night this is compensated for by increased intermaxillary traction force. Reversed twin blocks are used for the treatment of selected Class III malocclusion.