WO2011141937A1

WO2011141937A1 - Adjustable orthodontic bracket with an angle measuring device

Info

Publication number: WO2011141937A1
Application number: PCT/IN2011/000336
Authority: WO
Inventors: Alka Manish Banker; Indubhai Gajjar; Rupesh Parmanand Vasani
Original assignee: Alka Manish Banker; Indubhai Gajjar; Rupesh Parmanand Vasani
Priority date: 2010-05-14
Filing date: 2011-05-13
Publication date: 2011-11-17

Abstract

An adjustable orthodontic bracket with an angle measuring device is disclosed. The bracket includes a body member for fixing an orthodontic arch wire in a position such that stress is generated and force can be applied to a tooth to be treated, a bonding base member for bonding the bracket to a buccal or lingual side of the tooth to be treated, and a connecting member which is movable and connects the body member to the base member.

Description

ADJUSTABLE ORTHODONTIC BRACKET WITH

ANGLE MEASURING DEVICE

Field of the invention

The present invention relates to devices used for straightening teeth & is concerned with an adjustable orthodontic bracket assembly with continuous adjustment in any 3 planes of motion X, Y, Z planes (tip, torque & rotational movements).

Background of the invention:-

Orthodontic brackets are used to move crooked, malaligned or misaligned teeth and do so by controlling tooth movement in three dimensions namely vertical, horizontal and rotational. A previously proposed orthodontic technique is the edgewise technique that uses so-called Edgewise brackets. The Edgewise brackets have horizontal arch wire slots that allow good control of tooth movement in the horizontal and rotational directions, Another previously proposed technique is the Begg technique that uses so-called Begg brackets. The Begg brackets have a vertical extending arch wire slot that permits tipping in the mesio-distal direction.

The tipping of teeth requires less force than moving teeth in a bodily fashion and the up righting of tipped teeth requires more force than the initial tipping force. Classical Edgewise brackets

l express tip and torque by incremental increase of the arch wire until the bracket slot is filled completely. Freedom of tip and torque is allowed only when using undersized arch wire. This degree of freedom or 'play' is determined by the size of the slot and the arch wire dimension. A more recently proposed Edgewise bracket does allow tipping and later the express of tip and torque prescribed to the bracket with the use of accessories. In the case of a modified Edgewise bracket the use of accessories requires correct orientation and precise positioning into a vertical slot. Incorrect positioning will result in the absence of the desired effect at best and at worst the opposite effect. Furthermore, loss or deformation of the accessories will limit or prevent the desired tooth movement, which leads to prolonged treatment times. Extreme customization of the tooth can also be achieved by taki g a 3D scan of the tooth & having a robot bend the arch-wire to the precise 3D co-ordinates, but this is very expensive & puts the final position of the teeth out of the operator's hand. If the wire breaks it may take weeks before a new wire is made & reached to the operator.

Each tooth has a three dimensional position in the dental arch-i.e. in the x plane, y plane or z plane. It can also be called the tip, torque & rotation of the tooth. With bracket pre-adjustment, the bucco-lingual positioning of the teeth (in set and off set) in occlusal view (1^st order) is, for instance, through different thickness of brackets' bases. The 2^nd order bend (tipping movement) was achieved through slanting or angulating the slot. The 3^rd order bend (torque) or the bucco-lingual inclination (crown-root) of the teeth is obtained due to the occlusal- gingival inclination of the slot, since a squared or rectangular wire is fit in the "slot". This generates a couple that results in a rotation movement that positions the tooth correctly (crown and root). The bracket pre-angulation, in other words, an inclination of the "slot" in the mesial-distal direction, defines the tooth position in all the three planes.

The prescriptions of pre-adjustments are not efficient for 100% of the patients, because they are based on medium values and not on individualized ones. Because of that, the correct orthodontic treatment demands accomplishment of bends in the wires, rebonding and a lot of administration to reach an appropriate final result, in other words, the correct three-dimensional positioning of the teeth with periodontal health, stability and aesthetics. In the current level of the technique, the brackets and tubes possess a construction that doesn't allow any adjustment after bonding to the patient's tooth. To over come all above stated problems, the present invention ADJUSTABLE ORTHODONTIC BRACKET WITH AN ANGLE MEASURING DEVICE solves and overcomes the difficulties and deficiencies of the existing technique. The bracket can be re-adjusted to change the tip, torque, rotation without the need to de-bond it & extremely precise position of the tooth can be achieved with no wire bending. And the adjustment can be done by the operator himself & at the chair-side.

Object of the invention

The ADJUSTABLE ORTHODONTIC BRACKET WITH AN ANGLE MEASURING DEVICE provides a series of benefits rninimizing the inherent difficulties to the correct positioning of the bracket that due to the degree of difficulty and patient discomfort, contributed to low quality of results as well as of productivity:

• High degree of individualization of tooth position.

• Easiness in the execution of the orthodontic treatments;

• Lower cost of the treatment, due to the use of few orthodontic arches;

· Less wire bending needed.

• Adjustment can be done at chair side by the operator himsel f .

• Standardization of the brackets, with production simplification and reduction of the final cost.

• Decrease of treatment time;

· Efficiency in adult treatment;

• Low cost of the bracket as mass production possible. Statement of invention

An adjustable or customizable bracket including a body member for fixing orthodontic arch wire in a position such that stress is generated & force can be applied to the tooth to be treated; a bonding base member for bonding the bracket to the buccal or lingual side of a tooth to be treated & a connecting member which is movable & connects the base to the face of the bracket

Description of the drawing:

The present invention is fully described by the following descri tion in which reference is made to the drawings as follow.

Fig-1 represents the schematic view of the back of base

adjustable orthodontic bracket assembly of the present invention showing a mesh & groove pattern. Fig-2 represents the front schematic view of the base of the adjustable orthodontic bracket with a 'cup'

Fig-2(i) represents the schematic view of the honey-comb pattern of notches (holes) in the centre of the cup-of the base member of the adjustable orthodontic bracket.

Fig-3 represents the Section AA is a side inner view of the cup

of the base member of the adjustable orthodontic bracket.

Fig-4 represents the side view of the outer part of cup of the base member of adjustable orthodontic bracket,

Fig-5: represents the section BB- side view of section ΠΒ as seen in fig-2. Fig-6: represents the side view showing the cup attached to the base.

Fig-7: represents the 3D view of the base of the bracket

Fig-7(A): represents the back view of the base member,

Fig-7(B): represents the front view of the base member showing the cup.

Fig-8: represents the front schematic view of the face of the orthodontic adjustable bracket,

Fig-9: represents the back part of the face of the adjustable orthodontic bracket.

Fig-10: represents the section- A A as seen in fig-9 of the adjustable orthodontic bracket.

Fig-11: represents the side view of the 'cone' of the face of the adjustable orthodontic bracket.

Fig-12: represents the side view section-BB as seen in fig-9 of the face of the adjustable orthodontic bracket.

Fig-13: represents the side view & cone of the face of the adjustable orthodontic bracket.

Fig-14: represents the 3D view of the face of the bracket

Figl4(A): represents the front part showing the bracket slot & tie wings.

Figl4(B): represents the back part of the face showing the cone & the slot for the screw.

Fig.15 represents the bracket in neutral position Fig.16 represents the bracket showing rotational movement or adjustment

Fig.17 represent the Angle measuring device

Fig.18 represent the different movement & rotations possible with the cup & cone method of articulation where the screw in the middle of the face of the bracket will hold the movement in position.

Fig.19 represents the Base member of the bracket

Fig.20 represents the assembly view of the present inve tion.

As shown in Fig. 20, the present invention mainly consists with three parts, i.e. Base Members, Articulating Part, Face of the Bracket. l.Base Members:- Consists of a stainless steel back with mesh & grooves at the bock as shown in Fig.l & a cup shape in the front as shown in Fig.2. C .· o has a honey-comb pattern of notches in the centre into which a screw can be inserted, which is shown in Fig.2 (1). The Section AA is a side inner view of the cup of the base member of the adjustable orthodontic bracket, which is shown in Fig. 3 and a side view of the outer part of cup of the base member of adjustable orthodontic bracket is shown in Fig.4. The section BB- side view of Fig.2 is r; own in fig.5. The side view showing the cup attached to the base is . v.nvn in Fig.6. 6

2. Articulating join -

The cup (Fig.7) & the cone (Fig.ll) interlock with each other which shown in Fig.12 & Fig.13. The cone moves over the cup in a 360° rotation. There is a slot in the centre of the cup as shown in Fig.8 & 9 into which a screw can be threaded. The screw can be locked into any position in the honey-comb pattern of notches in the cu as shown in Fig.12 & 13.

3. The face of the Bracket:-

The back part of the face consists of a cone & a slot for a screw Figl4(B). The front part has a bracket (slot, tie- wings & bod}') shown in Figl4(A). The bracket can be plain edgewise or pre-ad^; stable with any prescription. The face can be of any material stainless teel, ceramic, plastic or combination of metal slot & ceramic body. The face of the bracket can also be a self-ligating type. In the centre ^<.:f the slot, there is a threaded hole through which a screw can be ins rted. The screw passes through the hole into a slot behind & can be inserted into the notches at the base of the bracket. This ^> ~ jnably comes with its own screw-driver device. The different move ;·. r-.t & rotations possible with the cup & cone method of articulation . -here the screw in the middle of the face of the bracket will hold Ihe movement in position is shown in Fig.18 As shown in Fig. 17 a screw-driver which can tighten the screw after adjustment & hold the new position in place. The screw driv r also acts as a measuring device, which when attached to a compu f or can show the 3 co-ordinates & 3 different angles. The end pa t of the screw is mildly curved. It can be put on the tooth surface to measure the 3 co-ordinates of the tooth.

Summary of the invention:

The present invented ADJUSTABLE ORTHODONTIC BP.A K.Tr WITH AN ANGLE MEASURING DEVICE provides a se: s of benefits rrurumizing the inherent difficulties to the correct positioning of the bracket that due to the degree of difficu¹ l y and patient discomfort, contributed to low quality of results as wt s of productivity:

• High degree of individualization of tooth position.

• Easiness in the execution of the orthodontic treatment^;

• Lower cost of the treatment, due to the use of few orthodontic arches; · Less wire bending needed.

• Adjustment can be done at chair side by the operator 1 . i i, . f . • Standardization of the brackets, with prod uction simplification and reduction of the final cost.

• Decrease of treatment time;

• Efficiency in adult treatment;

· Low cost of the bracket as mass production possible.

Claims

We Claim:

1. ADJUSTABLE ORTHODONTIC BRACKET WITH AN ANGLE MEASURING DEVICE Consists with base members, articulating part and face of the bracket and screw driver, wherein the base members consists of a stainless steel back with mesh & grooves ;

the articulating part consists with cup and cone;

the face of the bracket consist with back part which further consists of a cone & a slot for a screw and the front part has a bracket (slot, tie-wings & body).

2. ADJUSTABLE ORTHODONTIC BRACKET WITH AN ANGLE MEASURING Device as claimed in claim 1 wherein screw can be inserted from the honey-comb pattern of notches in the centre of cap.

3. ADJUSTABLE ORTHODONTIC BRACKET WITH AN ANGLE MEASURING Device as claimed in claim 1 wherein the cone moves over the cup in a 360° rotation.

4. ADJUSTABLE ORTHODONTIC BRACKET WITH AN ANGLE MEASURING Device as claimed in claim 1 wherein a slot in the centre of the cup is provided and threaded screw can be locked into any position in the honey-comb patt^ern of notches in the cup.

5. ADJUSTABLE ORTHODONTIC BRACKET WITH AN ANGLE MEASURING Device as claimed in claim 1 wherein in the centre of the slot, there is a threaded hole through w hich a screw can be inserted and the screw passes through the hole into a slot behind & can be inserted into the notches t the base of the bracket.

6. ADJUSTABLE ORTHODONTIC BRACKET WITT : AN ANGLE MEASURING Device as claimed in clai m 1 wh eia the different movement & rotations possible with the cu & cone method of articulation where the screw in the mic!c! !e of the face of the bracket will hold the movement in nositi r

7. ADJUSTABLE ORTHODONTIC BRACKET WITH AN ANGLE MEASURING Device as claimed in clai m 1 v. > 'n the screw driver is attached to a computer can show t; ' co- ordinates & 3 different angles. ADJUSTABLE ORTHODONTIC BRACKET WITH A ANGLE MEASURING Device as claimed in claim 1 to 7 substantially as herein described with reference to t foregoing description and the accompanying drawin s.