| 摘要 |
<p>The invention relates to an auxiliary device for the segmental distalization of the canine-to-molar posterior maxillary area in orthodontic treatments. The inventive device comprises two segments, namely a mesial segment and a distal segment. The aforementioned mesial segment consists of an anterior, flared part. The internal base of said part is fixed to the canine using adhesive and the external part thereof is used to hold an elastic element. An elongation, in the form of a half-round piece, extends from the mesial part of the device to the distal part thereof. A ball joint is disposed at the end of said elongation and is inserted in a socket which is located in the middle of the external part of the distal segment. The base of said distal segment is fixed to the upper molar using adhesive. The abovementioned ball joint is provided with several grooves which are used to mount said joint on pins located on the sides of the socket. Complementary projecting elements are provided on each segment in order to restrict the rotation therebetween. The inventive device can be made advantageously from translucent or transparent materials.</p> |
