| 摘要 |
<p>The invention concerns an apparatus comprising metal housings (B) fixed by bonding o their base (50) on a particular tooth and whereof those for incisors, canines and premolars, comprise a horizontal groove (54) for receiving an arcade wire (C), said groove (54) emerging towards an occlusion plane and being formed in an intermediate bridge (53) connecting the base (50) to a front wall (51) and linkages (E), such as elastic rings, of the arcade wire ligature. The invention is characterised in that each of the housings for the incisors, canines and premolars comprises, for catching an elastic ring (70) for ligature with the arcade wire (C), and in the intermediate bridge (52),on one side, between the base (50) and the groove (54) for the arcade wire (C), an anchor slot (55) emerging towards the occlusion plane, and on the other side, between the base (50) and the front wall (51), a horizontal groove (56) emerging opposite the groove (54) for the arcade wire (C), while the front wall has width and height greater than those of the base and those of the intermediate bridge (52), to mask said bridge and the arcade wire ligature elastic ring.</p> |
