CN219895958U - Orthodontic key closing curved arch wire - Google Patents

Abstract

The utility model discloses an orthodontic key closing curved arch wire, which relates to the technical field of tooth correction and comprises a horizontal arch wire, wherein the arch wire is arranged in a buccal tube on the surface of a tooth, two key closing curves are symmetrically arranged on the arch wire, each key closing curve comprises a circle curve at the top and a protrusion at the far end, which are sequentially connected, and the protrusion is semi-fixed on a fixed connecting piece through a ligature wire and is used for applying force to the circle curve. The utility model has simple structure, easy bending, soft correction force and convenient stress application, and can effectively solve the problems of large volume of closed curve, complex bending, inconvenient stress application and low wearing comfort level.

Description

Orthodontic key closing curved arch wire

Technical Field

The utility model relates to the technical field of tooth correction, in particular to an orthodontic key closing curved archwire.

Background

With the development and maturation of oral treatment technology and the continuous improvement of the degree of vision of people on the aesthetic degree of oral cavity, orthodontic treatment is widely popularized clinically. In orthodontic treatment, if the front teeth are slightly askew, a segment arch wire is generally used locally and matched with an implant anchorage to pull and move the front teeth to a normal position; if the front teeth incline and overlap with the adjacent teeth, the correction clearance is obtained by removing the front molar teeth or cutting the front teeth, and the correction device is worn to promote the slow movement of all teeth so as to form orderly arranged dentition. The fixing appliance consists of three parts, namely a belt ring, a bracket and an arch wire, wherein the belt ring is made of stainless steel sheets, is annular, is fixed on the fixed teeth by cement, supports the arch wire together with the bracket and plays a role in transmitting correction force. The buccal side of the band is typically welded with a buccal tube into which an archwire may be inserted, typically with the first molar selected as the retention tooth to which the band is adhered. In order to increase the elasticity of the arch wire, when correcting, a doctor can select the arch wire with the corresponding size according to the actual dental arch size of a patient, bend and twist the arch wire to manufacture a closing curve, then insert the bent correcting arch wire into a buccal tube with a ring and ligate the correcting arch wire on all dental brackets through ligature wires for use, and the teeth and the arch wire synchronously move by using the rebound force generated after the closing curve force is deformed, so that the alignment is finally realized.

The closing curve is selected, besides being easy to bend, the correction force of the closing curve needs to be considered, and in the application, the proper closing curve can be selected according to the required traction force. In general, the amount of force generated by the closure profile is related to the cross-sectional dimensions of the archwire, the height of the closure profile, the bracket spacing, and the shape of the closure profile. Under other conditions, the larger the sectional dimension of the arch wire is, the smaller the vertical height of the closing curve is, and the larger the force generated by closing the curve is; the greater the distance between the brackets, the longer the archwire that the closure curve contains, and the less force the closure curve generates.

For straight wire arches, the bracket spacing is fixed and the height of the closing curve is also limited by the vestibular sulcus. To generate a suitable correction force, a square wire of 0.018 x 0.025 or 0.019 x 0.025 inches is generally selected clinically, and a thicker or thinner square wire is used less because the force generated is too great or too small. Therefore, how to increase the height of the closing curve without increasing the height of the closing curve on the premise of ensuring the correction effect, and by increasing the length of the arch wire contained in the closing curve, the flexibility of the arch wire is higher, the correction force is milder, and the irritation to gum tissues is smaller, which is a problem which is always considered and improved by the person skilled in the art.

The existing closing curve commonly used in clinic is a T-shaped curve, the volume is large, the bending is complicated, and the operation is time-consuming and labor-consuming; moreover, when the arch wire is used for applying force, the form of bending back at the tail end or arranging a hook in the middle is generally adopted, and the bending back is easy to cause the falling off of a cheek tube and the stimulation to mucous membrane and gum due to the use of larger force; the hook is generally placed between two brackets, usually between the second premolars and the first molars, and the distance between the two teeth is short, so the accuracy requirement on the placement position of the hook is high, if the hook is close to the middle, the archwire cannot be positioned, if the hook is far away, the hook is clung to the first molars and cannot be stressed after being possibly stressed twice, and the archwire needs to be re-bent.

In order to solve the above problems, it is needed to design a closing curve with simple shape, convenient stress application, high wearing comfort and high treatment efficiency.

Disclosure of Invention

In order to solve the problems that the existing closing curve is large in size, complex in bending and inconvenient in stress application and low in wearing comfort, the utility model provides an orthodontic key closing curve arch wire, a loop curve is bent at the top of the closing curve, a protrusion is bent at the distal end, and the elasticity of the closing curve is better and the correcting force is softer by increasing the length of the arch wire between brackets. Meanwhile, the protrusion is used as a stress application part, the stress application is carried out for a plurality of times by shortening the length of the ligature wire connected with the protrusion, the operation is convenient, the bending is not needed, the stress application is carried out by bending the closure curve again, and the wearing comfort level of a patient is high. The aim of the utility model is mainly achieved by the following scheme:

the utility model provides an orthodontic key closes curved arch wire, includes horizontal arch wire, and the arch wire sets up in the buccal tube on tooth surface, and its characterized in that is equipped with two key on the arch wire and closes curved, and key closes curved protruding including the circle curved and the distal end at the top that connects gradually, and protruding semi-fixed on fixed connection spare through the ligature silk for circle curved application of force.

Further, a first force arm is arranged at one side end of the ring curve, and a second force arm is arranged at one side end of the protrusion; the first force arm and the second force arm are connected with a horizontal arch wire.

Further, the key closure curve is coplanar with the archwire.

Further, the fixed connection comprises a buccal tube or an anchorage pin.

Further, the arch wire is an orthodontic stainless steel square wire.

Compared with the prior art, the utility model has the beneficial effects that:

1. the key closing curve has a simple structure, is convenient to bend, and the bulge bent at the far end is convenient to stress, so that the buccal tube falling off caused by bending back or hooking is avoided, the mucous membrane and gum are stimulated, and the trouble and time waste caused by bending the closing curve again are avoided, so that the treatment is more efficient.

2. The protuberance is connected with the fixed connecting piece through the ligature wire, and the repeated stress application can be carried out by shortening the length of the ligature wire connected with the protuberance. The tail end of the ligature wire is fixed on the buccal tube, and is subjected to repeated stress application, so that correction force moving in the mesial direction can be continuously provided for the target molar, and the tooth extraction gap is effectively controlled; the tail end of the ligature wire is fixed on the anchorage nail for multiple stressing, so that the front tooth torque can be effectively controlled, and the adduction is reliable.

Drawings

FIG. 1 is a schematic illustration of an orthodontic key closing archwire configuration;

FIG. 2 is a schematic diagram of a key closure profile;

in the figure:

1, an arch wire;

2 key closing curve, 21 circle curve, 22 protrusion;

31 first moment arm, 32 second moment arm.

Detailed Description

In order to enable those skilled in the art to better understand the technical scheme of the present utility model, the technical scheme of the present utility model will be further described in detail with reference to the accompanying drawings and examples.

Embodiment one:

as shown in fig. 1-2, an orthodontic key closing curved arch wire comprises a horizontal arch wire 1, wherein the arch wire 1 is arranged in a buccal tube on the surface of teeth, a key closing curve 2 is formed on the arch wire 1 in a bending mode, the key closing curve 2 comprises a ring curve 21 and a protrusion 22 at the far end, which are sequentially connected, and a first force arm 31 is arranged at one side end of the ring curve 21; a second force arm 32 is arranged at one side end of the protrusion 22; when the first force arm 31 and the second force arm 32 are far away from each other, the deformation resilience force generated by the coil 21 provides correction force for driving the target molar to move in a near-middle way; the protrusions 22 are semi-fixed to the fixed connection, which is a buccal tube, after being forced in opposite directions by the ligature wire.

Further, the key closing curves 2 are coplanar with the archwire 1, in the unused state, the first force arm 31 and the second force arm 32 are close to each other, the shape of the closing curves 2 is key-shaped, the number of the key closing curves 2 is two, and the two key closing curves 2 are symmetrically arranged; the ligature wire adopts the circular steel wire with the diameter of 0.2 or 0.25mm, after a patient wears the ligature wire for a period of time, the effective length of the ligature wire connected between the protuberance 22 and the buccal tube is shortened to carry out multiple stress application on the ring curve 21 at the top end of the key closing curve 2, each stress application is carried out, the closing curve is opened by 1-1.5 mm, namely, each tooth extraction gap is relatively closed by 1-1.5 mm, accurate control is easy to realize, and the tooth gap closing is relatively reliable.

The tail end of the arch wire 1 is not specially fixed, can freely slide in the buccal tube, and in order to avoid the damage to the gum of a patient caused by the free end of the arch wire 1, the free end of the arch wire 1 is polished, and if necessary, the extending redundant length is cut and polished. The length of the ligature wire is shortened to carry out repeated stress application, so that the buccal tube falling off caused by bending back or hooking of the archwire 1 is effectively avoided, the mucous membrane and the gum are stimulated, the trouble caused by bending back and closing the curve again and the time waste are avoided, and the treatment efficiency is improved.

Furthermore, the arch wire is an orthodontic stainless steel square wire, the cross section of the arch wire is rectangular and is matched with the cross section of the buccal tube, and the arch wire can slide in the proximal and distal directions in the buccal tube, so that the key closing curve 2 continuously drives the target molar to move in the proximal direction.

In the following, the method of using the present utility model will be described.

For a patient with front teeth inclined and overlapped with adjacent teeth, after the front molar teeth are pulled out, correction for closing the tooth extraction gap is needed, at the moment, one end of a ligature wire is connected with the protrusions 22 of the two key closing curves 2 on two sides, the other end of the ligature wire is semi-fixed on a buccal tube on the buccal side of the target molar teeth, the first force arm 31 and the second force arm 32 are mutually far away, the opening of the circle curve 21 is pulled to be large, the generated deformation resilience force enables the first force arm 31 to move towards the protrusions 22 and the second force arm 32, the ligature wire pulls the buccal tube on the buccal side of the target molar teeth connected with the ligature wire to move towards the proximal direction, the buccal tube drives the target molar teeth to synchronously move towards the proximal direction, and correction force towards the proximal direction is generated on the buccal tube, so that the tooth extraction gap is closed. When the coil 21 needs to be forced, the free end of the ligature wire fixed on the buccal tube is loosened, the ligature wire is reversely forced, the first force arm 31 and the second force arm 32 of the corresponding key closing curve 2 are far away from each other in the far-middle direction, and the horizontal arch wire 1 is driven to slide in the far-middle direction in the buccal tube. After shortening the length of the ligature between the protrusion 22 and the buccal tube, the free end of the ligature is re-fixed on the buccal tube of the target molar buccal side, i.e., the opening of the large circle 21 is re-opened, after which the buccal tube of the target molar buccal side is continuously pulled to move in the mesial direction due to the resilience force generated by the recovery of the deformation of the key closure curve 2, thereby applying the corrective force of the mesial movement to the target molar. The force can be applied for a plurality of times according to the closing condition of the tooth extraction gap, and the deformation resilience force of the ring curve 21 continuously provides correction force for the target molar to move in the mesial direction, so that the tooth extraction gap is effectively controlled.

Embodiment two:

the difference from the first embodiment is that in this embodiment, the fixing connection member is a supporting pin, and when the first force arm 31 and the second force arm 32 are far away from each other, the deformation resilience force generated by the loop 21 provides the correction force of the adduction anterior teeth, and other structural features of this embodiment are the same as those of the first embodiment.

In the following, the method of using the present utility model will be described.

For patients with lighter front teeth deflection degree, when in use, firstly, an orthodontic key closing curved arch wire is fixed in a buccal tube on the surface of teeth, two protrusions 22 of two key closing curved wires 2 on two sides are respectively connected with 2 ligature wires, after the ligature wires are reversely applied with force, the tail ends of the ligature wires are semi-fixed on the anchorage nails of front molar areas on two sides, a first force arm 31 and a second force arm 32 are mutually far away, the opening of a circle curved wire 21 is pulled to be large, and the generated deformation resilience force provides correction force for adduction front teeth; after the patient wears the device for a period of time, the key closure curve 2 needs to be re-stressed along with the attenuation of the stress, at the moment, the free end of the ligature wire fixed on the anchorage nail is loosened, the ligature wire is reversely forced, the length of the ligature wire connected between the protrusion 22 and the anchorage nail is shortened, the free end of the ligature wire is re-fixed on the anchorage nail positioned in the premolaring region, and the stress is applied to the ring curve 21. The force can be applied for a plurality of times according to the adduction condition of the front teeth, the deformation resilience force of the ring bending 21 continuously provides the correction force of the adduction front teeth, the torque of the front teeth is effectively controlled, and the adduction is reliable.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (5)

1. The utility model provides an orthodontic key closes curved arch wire, includes horizontally arch wire (1), and arch wire (1) sets up in the buccal tube on tooth surface, and characterized in that is equipped with two key on arch wire (1) and closes curved (2) symmetrically, and key closes curved (2) including circle curved (21) at the top and the protruding (22) of distal end that connect gradually, protruding (22) semi-fixed on fixed connection spare through the ligature silk for circle curved (21) afterburning.

2. The orthodontic key closing curved archwire according to claim 1, wherein a first arm (31) is provided at one side end of the loop (21) and a second arm (32) is provided at one side end of the projection (22); the first force arm (31) and the second force arm (32) are connected with a horizontal arch wire (1).

3. An orthodontic key-closing curve archwire according to claim 2, characterized in that said key-closing curve (2) is coplanar with the archwire (1).

4. An orthodontic key closing archwire as in claim 3, wherein the fixed connection comprises a buccal tube or an anchorage pin.

5. An orthodontic key closing curved archwire according to claim 4, characterized in that said archwire (1) is an orthodontic stainless steel square wire.