| 摘要 |
Auxiliary element for the segmented distalisation of the posterior jawbone sector from canine to molar in orthodontic treatment. The element consists of two elements, a mesial segment composed of an anterior enlargement which with its inner base is fixed to the canine by means of adhesive and with its external portion facilities retention of an elastic element, an arched extension in the shoulder, finished off by a ball-and-socket member at its end which is introduced into a receptacle located in the middle portion and outside of the distal segment by its base is joined by means of adhesive to the upper molar, wherein the device can advantageously be produced from translucent or transparent materials.
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