Dentistry – Orthodontics – Bracket
Patent
1996-01-03
1999-07-27
Lucchesi, Nicholas D.
Dentistry
Orthodontics
Bracket
433 18, A61C 300
Patent
active
059279710
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present invention relates to the orthodontic field and concerns a device intending to realign teeth.
A large number of devices intending to move teeth are known, especcially those foryoung children. They concern devices fixed in the mouth, as well as those which have to be worn temporarily during night or day.
It has been established that when a molar has to be displaced distally (in order to create space or to ensure a correct relationship with the lower maxilla) it mostly needs additionally an angular movement in order to bring it in its ideal location.
Devices to ensure translational motion using rigid systems are already described. The shortcomings of these systems are that high friction is exerted between the supporting elements fixed on the tooth and force exerting means system which also impedes any angular movement.
The present invention allows simultaneously angular movement of the tooth toward a predetermined position and translational motion, without any friction and in respect to the individual resistance of the maxillo-dental system of a particular case and without any modification of the orientation of the applied force system. It concerns a device for moving a tooth, comprising a holder fixed to the tooth and a force exerting means able to co-operate at least indirectly with the holder.
Moreover, the devise according to the invention is characterised by the presence of an element which is at least indirectly jointly liable with the applied force system since the element is pivotable in respect to said holder.
Depending on the variation, the pivotable element and/or the holder provides abutments co-operating with each other in the aim to limit the angular movement of the tooth to a predetermined value. Moreover, a cuneal member to adjust the movement of rotation for each particular tooth may be provided.
Depending on the way of execution, the device can be fixed on the tooth directly or by means of a holder fixed around the tooth or can be part of an amovable device.
BRIEF DESCRIPTION OF THE DRAWINGS
The designs attached herewith represent, as a means of a non limited example, different execution forms of the present invention.
FIG. 1 is a sketch of the relative position of the teeth in half an upper jaw and where the upper molar has to be displaced with the use of the device of the present invention which is, in the present design, represented in a schematic way.
The FIGS. 2A and 2B represent the successive phases of displacement of the molar presented in FIG. 1.
FIG. 3 is a perspective view of a first form of execution of the object of the present invention, in a variation where it is fixed on a holder surrounding the tooth.
FIG. 4 is a bird's-eye view of the general effect of FIG. 3, with a partial cut.
FIG. 5 is a perspective view of a second form of execution in a variation where the device according to the present invention, is directly fixed on the tooth.
FIG. 6 is a view of a longitudinal cut of the general effect of FIG. 5.
FIG. 7 is a bird's-eye view of the execution in a variation directly fixed on the tooth.
FIG. 8 is a perspective view, with partial pull off, of a fourth form of execution fixed on a holder surrounding the tooth.
FIGS. 9a and 9b represent cut off views of the extreme positions of a fifth form of execution.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
According to the schematic implantation of the teeth 10 shown in FIG. 1, one can see that the first bicuspid is represented in contact with bicuspid 12, which has to be displaced. The molar 11 is attached directly with a triangular piece 20 which shows three plane sloping sides 21, 22 and 23.
As one will see subsequently, the displacement of the molar, represented in FIGS. 1 and 2, occur by applying a force in the direction of the arrow F as represented on the design. This displacement is produced either, in an intra-oral way (with the use of means placed between adjacent teeth namely, coils, elastics, magnets, slides, rails, plates), or in an extra-oral way (e.g. with the us
REFERENCES:
patent: 986425 (1911-03-01), Montague
patent: 1481861 (1924-01-01), Eaton
patent: 3660900 (1972-05-01), Andrews
patent: 3721005 (1973-03-01), Cohen
patent: 4243387 (1981-01-01), Prins
patent: 4496317 (1985-01-01), Hulsey
patent: 5302121 (1994-04-01), Gagin
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