WO2016114731A1

WO2016114731A1 - Orthodontic uprighter

Info

Publication number: WO2016114731A1
Application number: PCT/TR2015/050209
Authority: WO
Inventors: Hasan BABACAN
Original assignee: Babacan Hasan
Priority date: 2015-01-14
Filing date: 2015-11-30
Publication date: 2016-07-21

Abstract

Invention is about an apparatus that prevents the teeth from tipping by uprighting the teeth, which move towards to the cavity when a force applied to the teeth that is neighbor to the extraction cavity, with the gradient occurred on the archwire during the orthodontic treatment including a tooth extraction.

Description

ORTHODONTIC UPRIGHTER

TECHNICAL FIELD

Invention is about an apparatus that prevents the teeth from tipping by uprighting the teeth, which move towards to the cavity when a force applied to the teeth that is neighbor to the extraction cavity, with the gradient occurred on the archwire during the orthodontic treatment including a tooth extraction. PREVIOUS TECHNIC

In our days, fixed orthodontic treatment, in which the teeth are bracketed and connected to the archwire, is preferred for successful orthodontic treatments in a short time period. First stage of the fixed orthodontic treatment is leveling the teeth which are at different levels according to occlusal plane. Leveling stage is the first phase where the teeth meet with the orthodontic force which is transferred by archwire. That force changes according to the metallurgical properties and diameter width of the chosen archwire. The force, which is applied during the leveling stage, must be at optimum level that should not prevent the blood flow in tissues around the tooth root. Therefore, in that stage; the archwire, which will apply the lightest force, have the thinnest width and have a high elasticity feature is preferred. Because of that reason, archwires with a diameter of 0.12 inches are used. Applied archwires pass through gaps of the braces called slots. In the market, slot spaces are in a range of 0.18 - 0.22 inches width. Teeth are levelled by the force which is applied by archwire. After leveling the teeth as they can by an archwire with a thin diameter, a thicker archwire is applied. After providing a stage by stage leveling by archwires, filling the extraction cavities, which is the second stage in fixed orthodontic treatments, comes after.

In orthodontic treatments, the most preferred teeth for the extraction is the first premolar teeth. Crowded teeth are aligned by using the extraction cavities. For that, canine tooth has to be moved towards to cavity. For that purpose elastic chains, spiral springs (mentioned in U.S. Pat. No 5.429.501 (A) and U.S. Pat. No 4,315,739 numbered patents) or special twisted wires (mentioned in U.S. Pat. No 5,246.366 numbered patents) are used. These tools are placed to the teeth which are neighbors to cavity and the intended tooth movement is obtained by the occurred tensile force. Canine tooth has to be moved very carefully to the backwards. The preferred movement in that situation is a parallel movement of tooth root and crone with same ratio. But the same amount of force is not applied to the root which is located in the alveolar bone because the force is conveyed at brace level to the crone part. As a result, while the crone part moves towards the force direction, root part moves slower. As a result, a rotation center is formed in the alveolar bone, near to edge of the root, and a movement occurred which is resulted with tipping of the tooth towards the cavity. That is an unwanted situation because of the difficulty of uprighting the teeth again and also because of causing embedment and extrusion in neighbor tooth. While the tooth moves towards the extraction cavity, to prevent these kind of tipping movements brace designs are improved which is mentioned in U.S. Pat. No. 5,125,832 numbered patent application. Besides for uprighting the teeth, which is tipped towards the extraction cavity, uprighter spiral springs are designed in U.S. Pat. No. 5,125,832 numbered patent application. In that application, uprighters convey the force, which they generated by getting support from archwire, to the brace and the teeth that they are placed on. To mount that uprighters to the braces, special brace designs are needed which is mentioned in U.S. Pat. No. 5,125,832.

Force using in orthodontics cannot be explained only with the physical rule called action and reaction. Biological factors should also be considered. If the blood build up is pressured in the area where alveolar bone and root surface are contacted during the tooth movement, normal biological response of the bone does not occur because there would not be a blood flow, so the movement of the tooth is not obtained. For that reason both physical rules and biological responses should be considered during the tooth movement. The apparatus, which we mentioned in TR 2010 03528 numbered and "Butterfly Shaped Connection Wire" titled application, is made from a connection wire. Connection wire is applied to the teeth which are neighbor to the extraction cavity by being connected to their braces. That means, it can be implemented to the related area. Butterfly shaped connection wire is placed by covering the arch wire. While the teeth are getting closer with the force generated by the tightening of connection wire, moving teeth are forced to be uprighted by generating a gradient on the wire with the elastic that pulls the wire from the other jaw or the related tooth. That system is applied by getting support from the other jaw. A slight gradient can be occurred on the arch wire because of the butterfly shaped connection wire affect by covering the arch wire and it pulls the archwire with the elastic that is hanged to the wings. So it is less effective in uprighting. Patient cooperation is needed to make it more effective. After the back (Jaw) is placed, an elastic has to be placed to the wing which takes support from the other arch. When the butterfly shaped connection wire is applied, a gradient is occurred on the wire by the elastic which pulls the wings while teeth are moving towards to extraction cavity. Meanwhile because of the applied vertical force, extra force that will be a lengthener for the neighbor teeth is also loaded to the system. The effect of that extra force is not always wanted.

Above mentioned methods and patented products are designed for the tipped tooth to be uprighted instead of parallel movement of the tooth while it is moving and they also need a special brace design to provide a movement without tipping while the tooth is moving towards to extraction cavity.

Closing the extraction cavity and providing a movement without tipping of the moving teeth during the leveling procedure in teeth extraction patients will cause a shorter orthodontic treatment. Thus, dentists can heal more patients in the same amount of time and they will not face with the problems caused by patients who have a reduced adaptation because of the long treatment period.

An orthodontic uprighter is needed for the dentists which can eliminate the above mentioned problems and offers an application easiness.

BRIEF DESCRIPTION OF THE INVENTION

Invention is an apparatus which can provide the extraction cavity to be closed and correction of the root angles of the moving teeth while the teeth are lining up properly in an orthodontic treatment. Thus, an average of 6 months reduction is aimed in fixed orthodontic treatments with tooth extraction which has a 16 to 24 months treatment period. MEANINGS OF THE FIGURES

Figure 1 . Mounted View of the Mouth Application

Figure 2. View from Elastic Chain

Figure 3. Front View of the One-Piece Uprighter Figure 4. Side View of the One-Piece Uprighter

Figure 5. A-A Section View

Figure 6. Side View of the Two Piece Uprighter

Figure 7. B-B Section View

The equivalents of the part numbers stated on the figures are given below

1 . Archwire

2. Brace

3. Tooth

4. Elastic Chain

5. Orthodontic Uprighter

5.1 . Head Part

5.2. Neck Part

5.3. Body

5.4. Wire Slot

DETAILED DESCRIPTION OF THE INVENTION

Invention is about an uprighter (5) apparatus which is used with an archwire (1 ), a brace (2), a tooth (3) and an elastic chain (4). The uprighter (5) is characterized with a head part (5.1 ), a neck part (5.2), a body (5.3) and a wire slot (5.4).

In the below part of the body (5.3) of the orthodontic uprighter (5), there is a notch shaped wire slot (5.4). The wire slot (5.4) is placed on longitudinally to the one side of the middle line but not exactly in the middle. Before applying the orthodontic uprighter to the patient, central ring of the triple parts which are cut from elastic chain (4), is prepared by passing them through the head part (5.1 ) and placed to the neck part (5.2) of the orthodontic uprighter (5). The prepared parts are placed to the patient's mouth. At that stage, one ring of the triple elastic chain (4) is placed on the wings of the brace of the tooth in front of the extraction cavity and the other ring is placed on the wings of the brace (2) of the tooth (3) which is located at the back of the extraction cavity. The orthodontic uprighter (5) apparatus is placed in the middle of the extraction cavity and the notch shaped wire slot (5.4), which is on the lower part of the orthodontic uprighter (5), is placed on the archwire (1 ). The notch shaped wire slot (5.4) placed in the below section of the body (5.3) part of the orthodontic uprighter (5); is formed a structure, which is in a foot shape with one thin leg and one thick leg, in the below section of the body (5.3). The most important point in that procedure is the thick leg, which is formed by the notch shaped wire slot (5.4) must be placed towards to extraction cavity and the thin leg must be placed towards to cheek. The reason of that procedure is to provide conveying of any occurred rotation momentum on the orthodontic uprighter (5) towards to extraction cavity. If that rotation occurs towards to cheek, it can disturb the patient's cheeks.

The elastic chains (4) that we use while placing the orthodontic uprighter (5) in extraction cavity are also convey the force that pushes the teeth, which are neighbor to the cavity, towards to each other. Thus starts the teeth movement in the direction of the applied force.

The orthodontic uprighter (5) apparatus, which is placed in extraction cavity with the above mentioned method, generates a gradient on the archwire (1 ). That gradient, which is occurred on the archwire (1 ), generates a rotation momentum on the teeth by the help of the braces (2) planted on the teeth, which are neighbor to the extraction cavity. That momentum force forces the teeth to be tipped in the direction of the movement. By that way, contrary to the classical teeth movement implementations in orthodontics, tooth root and tooth crone (the part which is seen in the mouth) move together in the same direction during the movement of the tooth (3) towards the cavity. Thus saves time, effort and equipment which is spent for fixing the angle of the moving teeth in the jaw bone. While the force of the elastic chain (4) pulls the teeth together, they also get uprighted by the gradient which is formed by the orthodontic uprighter (5) apparatus. That system is applied to the both sides in same jaw substantively.

The effect of the orthodontic uprighter (5) apparatus regarding to biological principles can be explained like this: the force, which is conveyed to the teeth (3), is not concentrated on a single area and it spreads all over the root surface thanks to gradient that is generated by the orthodontic uprighter (5) apparatus on the archwire. Thus, blood flow on the surface of the neighbor alveolar bone in the movement direction does not prevented and a proper biological environment for the movement of the tooth (3) is generated. As a result, there wouldn't be a slowdown or pause in the movement speed of the tooth (3). The wire slot (5.4) part of the orthodontic uprighter (5) apparatus generates a serious gradient on the wire by fitting on the archwire (1 ). So it is more effective in the uprighting procedures.

To adjust the distance between head part (5.1 ), neck part (5.2) and the wire slot (5.4) of the orthodontic uprighter (5), the body (5.3) can be structured in a two- piece form and comprising a groove set between them. The adjustment of the distance between the head part (5.1 ), the neck part (5.2) and the wire slot (5.4) provides different tension forces with a single uprighter instead of different tension forces by the products with different heights. The adjustment of the distance between the head part (5.1 ), the neck part (5.2) and the wire slot (5.4) can provide a change in the gradient, which is occurred on the wire, and in the force which is conveyed to the teeth. Changing the gradient of the wire and the force that is conveyed to the teeth will provide a lot of benefits in the treatment process.

Thanks to orthodontic uprighter (5) apparatus, while fixing the crowdedness of the teeth by leveling them, closing of the extraction cavities is performed as the round flexible archwires (1 ) are in the mouth which is used for leveling of the teeth. That means uniting the first and the second phases of the orthodontic treatments which are the leveling and closure of the extraction cavities.

The orthodontic uprighter (5) apparatus described in the invention can be in various geometry, height and thickness. The orthodontic uprighter (5) apparatus can be produced from plastic, metal, composite material or different materials.

There is no limitation for the shape of the orthodontic uprighter (5) apparatus. It can be designed in different geometrical shapes. The shape of the above described orthodontic uprighter (5) can be changed or modified in the scope of this invention.

Claims

An orthodontic uprighter (5) apparatus, comprising; a head part (5.1 ), a neck part (5.2), a body (5.3) and a wire slot (5.4) which provide bringing the teeth (3) to same level on archwire (1 ).

The orthodontic uprighter (5) apparatus of claim 1 , wherein the wire slot (5.4) provides a movement for the teeth (3) roots towards the force direction with the occurred gradient by fitting on the archwire (1 ) when a force applied to the wire slot (5.4) to close the extraction cavities.

The orthodontic uprighter (5) apparatus of claim 1 , wherein the wire slot (5.4) is placed on longitudinally to the one side of the middle line but not exactly in the middle of the apparatus.

The orthodontic uprighter (5) apparatus of claim 1 , wherein in the head part (5.1 ) and the neck part (5.2) provide uniting of the elastic chain (4) and the orthodontic uprighter (5).

The orthodontic uprighter (5) apparatus of claim 1 is made from plastic.

The orthodontic uprighter (5) apparatus of claim 1 , wherein the body (5.3) can be structured in a two-piece form and comprising a groove set between them to adjust the distance between head part (5.1 ), neck part (5.2) and the wire slot (5.4).