CN113303933A - Correcting device and correcting method for mandibular distantly moving molar - Google Patents

Abstract

The invention discloses a correcting device and a correcting method for mandibular distancing molar, which relate to the technical field of tooth correcting equipment and comprise a tension force application part, a sliding rod and a fixing part, wherein the molar to be corrected is fixed with the molar force application part, the fixing part is fixed on the oral vestibule groove at the same side with the molar force application part, one end of the sliding rod is fixed on the molar force application part, the other end is connected on a main arch wire of a mandibular fixation correcting device in a sliding way, the tension force application part is connected between the fixing part and the sliding rod and is used for applying tension to the sliding rod inwards, the correcting device comprises the sliding rod and an elastic part, so that the slide rod applies far and middle moving acting force to the molar under the elastic action of the elastic piece to realize the far and middle movement of the molar, and the whole device of the orthodontic device is simple in composition, low in manufacturing cost and good in economic benefit, and is beneficial to popularization in the aspect of molar orthodontic.

Description

Correcting device and correcting method for mandibular distantly moving molar

Technical Field

The invention relates to the technical field of orthodontic equipment, in particular to a correcting device and a correcting method for mandibular distantly moving molar.

Background

With the continuous development of the modern orthodontic correction concept, the correction concept of non-extraction correction is more and more accepted by most orthodontic doctors and patients, and the remote movement of molar pushing is the best choice of the non-extraction correction scheme. Far-reaching movements of the upper molars have been studied most, regardless of traditional and modern approaches, but far-reaching movements of the lower molars have been studied relatively rarely.

In the existing fixed correction method, the middle-micro screw auxiliary molar distalization is the simplest and most effective method at present, and the best distalization mode of mandibular molar is to implant the micro screw at the oblique line outside the mandibular molar to move the lower dentition in the whole distalization way. When a micro screw is implanted between the second premolar and the first molar to move the lower jaw molar far away, the micro screw is matched with the main arch wire to load the titanium forceps push spring to realize the purpose, the titanium forceps push spring needs to be replaced during each force application, and the operation time is long.

In the technical scheme disclosed by the application number of '202110329145.6', namely 'a device for moving posterior dentition far and in the middle', a first molar is connected with a cuspid through a connecting rod, when the posterior dentition far and in the middle is moved, a planting nail and a traction hook positioned on the buccal side of the cuspid are connected through an elastic chain or a nickel titanium tension spring pin, and the cuspid can be integrally moved to a group of teeth of the molar. In addition, the existing recessive facing appliance has great advantages in molar distalization, is comfortable and reliable in curative effect, and can realize molar distalization by using all the teeth at the front in the dental arch as anchorage through the deformation of the facing, so that the problem of implanting micro screws can be avoided in the early stage, for example, the invention patent with the application number of '201710452783.0', namely 'a method for stealthily correcting mandibular guidance and a stealth correcting device based on the method'. However, the recessive braces are relatively high in price at present, and not all patients can receive the treatment of the appliances, and the recessive braces appliances are essentially patient-dependent appliances, and cannot achieve the expected distant and middle molar movement effect when the patient compliance is poor.

Therefore, how to reduce the difficulty of the molar distal movement operation and the correction cost is an urgent technical problem to be solved in the field.

Disclosure of Invention

The invention aims to provide a correcting device and a correcting method for mandibular distancing molars, which are used for solving the problems in the prior art, reducing the operation difficulty of molar distancing movement, and have the advantages of simple structure, reduced molar correcting cost and good economic benefit.

In order to achieve the purpose, the invention provides the following scheme: the invention provides a correcting device for mandibular distancing molar, which comprises a tension force application part, a sliding rod and a fixing part, wherein the molar to be corrected is fixed with the molar force application part, the fixing part is fixed on the oral vestibule ditch on the same side with the molar force application part, one end of the sliding rod is fixed on the molar force application part, the other end of the sliding rod is connected on a main arch wire of a mandibular fixation correcting device in a sliding way, the tension force application part is connected between the fixing part and the sliding rod, and the tension force application part is used for applying tension to the sliding rod inwards.

Preferably, the molar force application member comprises a molar band ring, and the fixed end of the sliding rod is inserted into a palatine canal on the molar band ring and is ligated and fixed by a ligature wire.

Preferably, the sliding end of the sliding rod is in a hook-shaped structure, and the hook-shaped structure is hung on the main arch wire.

Preferably, a horizontal section for force transmission is further arranged between the fixed end and the sliding end.

Preferably, the fixture is located between the first molar and the second premolar.

Preferably, the tension force application member is a rubber chain or a tension spring, and the fixing member is a micro screw.

Preferably, the connecting part of the horizontal segment and the hook-shaped structure is provided with a bent part for matching with the rubber chain.

Preferably, the hook formation is engaged with the primary archwire in a position on a distal one of the canine teeth.

The invention also discloses a correcting method of the mandibular distancing molar, which comprises the following steps:

1) a lower jaw fixing appliance is bonded in the oral cavity, and a jaw tube is welded on a buccal tube of a molar belt ring on the molar to be corrected in parallel;

2) implanting a fixing piece on the oral vestibular sulcus between the second anterior molar and the first molar on both sides of the lower jaw;

3) fixing the fixed end of the sliding rod on the jaw pipe, ligating and fixing by using a ligature wire, wherein the sliding end is in a hook-shaped structure and is fixed on a far middle arch wire of the cuspid in a sliding manner;

4) a rubber chain or a tension spring is fixed between the fixing member and the slide bar, and a tension force is applied to the slide bar.

Preferably, the rubber chain or tension spring is replaced periodically.

Compared with the prior art, the invention has the following technical effects:

1. according to the invention, by arranging the sliding rod and the elastic piece, the sliding rod applies a far and middle movement acting force to the molar under the elastic action of the elastic piece, so that the far and middle movement of the molar can be realized, the problems of light and middle crowding of the lower jaw and light and middle III type mismatching deformity correction without tooth extraction are solved, and the intention of non-tooth extraction correction of most patients is met; and the whole device of the orthodontic device is simple in composition, low in manufacturing cost and good in economic benefit, and is beneficial to popularization in the aspect of molar orthodontic.

2. When the tension force application part adopts the elastic part, the elastic part has a simple structure and is convenient to replace, and compared with a titanium push spring applying forceps, the operation time is obviously reduced, so that the correction operation difficulty can be reduced;

3. according to the invention, the horizontal section of the sliding rod is bent forwards and downwards for a certain distance at the position of the fixed end before the horizontal section of the sliding rod is bent forwards, so that the lower jaw fixing appliance fixed on the teeth in front of the molar to be corrected can be avoided, the horizontal section is prevented from interfering with the horizontal section, and meanwhile, the two end parts of the sliding rod are respectively matched with the palatine tube and the main arch wire.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.

FIG. 1 is a schematic view of an embodiment of the orthosis of the present invention;

FIG. 2 is a schematic view of a slide bar;

FIG. 3 is a partial schematic view of the slide bar from another perspective;

wherein, 1, a molar belt ring; 2. a slide bar; 3. a miniscrew; 4. a fixed end; 5. a sliding end; 6. a primary archwire; 7. a rubber chain; 8. a horizontal segment; 9. a bending part.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention aims to provide a correcting device and a correcting method for mandibular distancing molars, which are used for solving the problems in the prior art, reducing the operation difficulty of molar distancing movement, and have the advantages of simple structure, reduced molar correcting cost and good economic benefit.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

Example 1:

as shown in fig. 1 to 3, the present embodiment provides a device for correcting mandibular distancing molar, which includes a tension force application member, a sliding rod 2 and a fixing member, wherein the molar to be corrected is fixed with the tension force application member, the fixing member is fixed on the oral vestibule sulcus at the same side as the tension force application member, one end of the sliding rod 2 is fixed on the tension force application member, the other end is connected to a main arch wire 6 of the mandibular fixation corrector in a sliding manner, the tension force application member is connected between the fixing member and the sliding rod 2, and the tension force application member is used for applying tension to the sliding rod 2 inwards.

When in use, the molar force application part is fixed on the molar to be corrected, then the fixing part is implanted on the oral vestibular groove near the molar, one end of the sliding rod 2 is fixed on the molar force application part, the other end is connected on the main arch wire 6 in a sliding way, and finally the molar force application part is arranged between the fixing part and the sliding rod 2 and applies inward pulling force to the sliding rod 2; because the sliding end 5 of the sliding rod 2 is in sliding connection with the main arch wire 6, under the action of the tension of the force application part for grinding teeth, the sliding rod 2 has the tendency of sliding backwards along the main arch wire 6, the tension acts on the force application part for grinding teeth through the fixed end 4 of the sliding rod 2, and generates thrust to the force application part for grinding teeth, and the grinding teeth to be corrected are gradually moved far and far under the thrust.

From this, this embodiment is through setting up slide bar 2 and pulling force application of force spare for slide bar 2 treats under the pulling force effect of pulling force application of force spare and corrects the molar and apply far and well removal effort, can realize treating the far and well removal of correcting the molar, has realized not drawing the tooth and has solved the problem that the lower jaw is light, medium crowded and light, medium III type mismatch deformity was corrected, has catered to most patients and has not drawn the intention of correcting of tooth.

Specifically, in this embodiment, the molar force application member is a molar belt ring 1, the fixing member is a micro screw 3, and the molar belt ring 1 and the micro screw 3 are common structures in the field, and detailed structures thereof are not described in detail in this embodiment.

Specifically, in the embodiment, the miniscrew 3 is positioned between the first molar and the second anterior molar, the interradicular width and the buccal cortical thickness of the bone are only second to the width between the first and the second molar roots of the mandible, the implantation is relatively safe, the position is relatively simple to operate in the front clinical, and the implantation position is the implantation position of the conventional mandible anchorage nail; the position of the replacement of the micro-screws 3 can be disregarded when the mandibular molars move within 2mm far, but the position of the posterior abutment pin can be considered when the mandibular molars move more than 2mm far.

In the embodiment, the tension force application piece is used for applying tension to the sliding rod 2, and can be an elastic piece or other tension elements such as a steel wire capable of applying pretightening force, and the pretightening force can be properly applied after the pretightening force is reduced for a certain time, so that the thrust of the molar to be corrected is ensured; when the elastic piece is adopted, the rubber chain 7 or the tension spring is preferably selected, the rubber chain 7 and the tension spring are auxiliary devices commonly used in orthodontic treatment, the structure is simple, the replacement as the tension force application piece is also convenient, compared with applying a forceps titanium push spring, the operation time is obviously reduced, and the correction operation difficulty can be reduced.

Meanwhile, the correcting device in the embodiment mainly adopts the sliding rod, the micro screw and the tension force application piece, the whole device is simple in composition, low in manufacturing cost and good in economic benefit, and the device is favorable for popularization in the aspect of correcting the molar.

In the embodiment, the sliding rod 2 is preferably made of stainless steel wires and has the same radian with the posterior dental arch, the diameter of the stainless steel wires is 0.8 mm-1.2 mm, preferably 0.9mm, the fixed end 4 of the sliding rod is bent into two strands in the direction perpendicular to the coronal part of the dental arch radian and the stainless steel wires, the bent stainless steel wires are inserted into the palatine canal, and a certain length is leaked from the tail end of the palatine canal, so that ligation and fixation are convenient; then the near end bends downwards at the position of 85-95 degrees (preferably 90 degrees) of the coronal position for about 2mm, then a horizontal section 8 of the sliding rod 2 is bent forwards, the position of the far position of the canine tooth bracket on the two sides is marked, a steel wire is bent backwards and horizontally 2mm in front of the marking point to form a finger-shaped traction hook in a double-strand manner, the finger-shaped traction hook is a bent part 9 and is used for hooking a rubber chain 7, then the sliding rod is bent upwards vertically along the marking point position, and then the end part is bent inwards to obtain a sliding end 5 with a hook-shaped structure, so that the sliding rod 2 is formed.

The reason that the horizontal section 8 is bent forwards is that the horizontal section is bent downwards for about 2mm at the fixed end in advance, so that the lower jaw fixing appliance is avoided, the horizontal section is prevented from interfering with the appliance fixed on the tooth to be corrected before the molar, and two end parts of the sliding rod 2 are convenient to be matched with the palatine tube and the main arch wire 6 respectively.

Further, the hook-like structure of the present embodiment cooperates with the main archwire 6 in a position on the distal archwire of the cuspids; the distance between the canine tooth and the molar tooth to be corrected is longer, so that the end part of the rubber chain 7 can be conveniently fixed, and a certain tensile force is applied at the same time, wherein the tensile force value is 1.5N-2.5N; and the radian of a connecting line between the canine teeth and the molar teeth to be corrected is not large, so that the bending degree of the horizontal section 8 is lower, and the horizontal section 8 is ensured to have a good force transmission effect.

Example 2:

the embodiment discloses a method for correcting mandibular distancing molar, which comprises the following steps:

1) a lower jaw fixing appliance is adhered in the oral cavity, and a jaw tube is welded on a buccal tube with a ring on the molar to be corrected, so that the jaw tube is ensured to be parallel to the buccal tube;

2) implanting a micro screw 3 on the oral vestibular groove between the second anterior molar and the second molar on both sides of the lower jaw;

3) fixing a fixed end 4 of the sliding rod 2 on the jaw pipe, ligating and fixing by using a ligature wire, and fixing a sliding end 5 on a main arch wire 6 in a hook mode;

4) a rubber chain 7 or a tension spring is fixed between the micro screw 3 and the slide bar 2, and applies a tensile force to the slide bar 2.

After a period of correction time, after the molar teeth to be corrected move far away, the distance between the bending part 9 and the micro screw 3 is reduced, so that the elasticity of the rubber chain 7 or the tension spring is reduced, and the rubber chain 7 or the tension spring is in an extension state for a long time, so that the elasticity of the rubber chain 7 or the tension spring is reduced, and in order to ensure the acting force of the rubber chain 7 or the tension spring on the molar teeth to be corrected, the rubber chain 7 or the tension spring needs to be replaced with a new one during the re-diagnosis, so that the acting force of the molar teeth to be corrected is ensured; the specific review time interval, that is, the time interval for replacing the rubber chain 7 or the tension spring, is determined by those skilled in the art according to the actual situation, and this embodiment is not limited in particular.

The adaptation according to the actual needs is within the scope of the invention.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (10)

1. The correcting device for the mandibular distancing molar is characterized by comprising a tension force application part, a sliding rod and a fixing part, wherein the molar to be corrected is fixed with the molar force application part, the fixing part is fixed on the oral vestibule groove at the same side as the molar force application part, one end of the sliding rod is fixed on the molar force application part, the other end of the sliding rod is connected on a main arch wire of a mandibular fixation correcting device in a sliding manner, the tension force application part is connected between the fixing part and the sliding rod, and the tension force application part is used for applying tension to the sliding rod inwards.

2. The device as claimed in claim 1, wherein the molar force applying member comprises a molar band, and the fixed end of the sliding rod is inserted into a palatine canal on the molar band and fixed by ligation with a ligature wire.

3. The orthodontic device of claim 2, wherein the sliding end of the sliding bar is hooked, the hooked being hooked over the primary archwire.

4. The orthodontic device of claim 3, wherein a horizontal segment for force transfer is further provided between the fixed end and the sliding end.

5. The orthodontic device of the mandibular distancing molar of any one of claims 1 to 4, wherein the fixture is located between the first molar and the second premolar.

6. The device as claimed in claim 5, wherein the tension applying member is a rubber chain or a tension spring, and the fixing member is a micro screw.

7. The orthodontic device of claim 4, wherein the connection portion of the horizontal segment and the hook structure has a bent portion for engaging the rubber chain.

8. The orthodontic device of claim 4, wherein the hook formation engages the primary archwire at a location on the distal archwire of the canines.

9. A correction method of mandibular distancing molar is characterized by comprising the following steps:

1) a lower jaw fixing appliance is bonded in the oral cavity, and a jaw tube is welded on a buccal tube of a molar belt ring on the molar to be corrected in parallel;

2) implanting a fixing piece on the oral vestibular sulcus between the second anterior molar and the first molar on both sides of the lower jaw;

3) fixing the fixed end of the sliding rod on the jaw pipe, ligating and fixing by using a ligature wire, wherein the sliding end is in a hook-shaped structure and is fixed on a far middle arch wire of the cuspid in a sliding manner;

4) a rubber chain or a tension spring is fixed between the fixing member and the slide bar, and a tension force is applied to the slide bar.

10. The method of correcting mandibular distancing molars of claim 9, wherein the rubber chain or tension spring is replaced periodically.

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