Title:
AN ORTHODONTIC ASSEMBLY
Document Type and Number:
WIPO Patent Application WO/2009/067853
Kind Code:
A1
Abstract:
An orthodontic assembly comprises a molar tube, an orthodontic bracket, an arch wire (28) and a ligature device (27). Arch wire slots (3,16) are formed in a mesiodistal direction in the bracket and in the molar tube. At least one additional slot (7,21) is formed in the side wall of the arch wire slot of the bracket and of the molar tube and opens at the arch wire slot. Each additional slot starts from the mesial edge or the distal edge of the side wall of the arch wire slot. An additional slot (10) is formed in the bottom wall of the arch wire slot and opens at the arch wire slot. The intersection angle of the mesial edge of the side wall and the bottom wall of the arch wire slot is an acute angle and the intersection angle of the distal edge of the side wall and the bottom wall of the arch wire slot is an acute angle, which will be an aid for the arch wire to move along the arch wire slot after being ligatured. Different arch wires are used, and different ligature manners are adopted in cooperation, which controls the position of the arch wire in the arch wire slot and the arch wire's movement of in-and-out the additional slots, so that the teeth can be moved slantwise in the mesiodistal direction only under a light force and the root uprighting actions in both buccalingual andmesiodistal direction can be done easily without an additional arch wire.
Inventors:
SONG ZHICHUN (CN)
Application Number:
PCT/CN2008/001084
Publication Date:
June 04, 2009
Filing Date:
June 03, 2008
Export Citation:
Assignee:
SONG ZHICHUN (CN)
International Classes:
A61C7/14
Foreign References:
| US6368105B1 | 2002-04-09 | |||
| US4799882A | 1989-01-24 | |||
| CN2647264Y | 2004-10-13 | |||
| JPH06292691A | 1994-10-21 | |||
| CN2928031Y | 2007-08-01 | |||
| CN101108141A | 2008-01-23 | |||
| US4531911A | 1985-07-30 |
Attorney, Agent or Firm:
QINGDAO FIRST PATENT & TRADEMARK AGENT CO., LTD (World Trade Center BuildingNO.6 Xianggang Middle Road,Qingdao, Shandong 1, CN)
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