CN220442750U

CN220442750U - Mesial tilting second molar upright corrector

Info

Publication number: CN220442750U
Application number: CN202321197850.6U
Authority: CN
Inventors: 李晓峰
Original assignee: Beijing Jingsong Wangjing Stomatological Hospital Co ltd
Current assignee: Beijing Jingsong Wangjing Stomatological Hospital Co ltd
Priority date: 2023-05-17
Filing date: 2023-05-17
Publication date: 2024-02-06
Anticipated expiration: 2033-05-17

Abstract

The present application relates to a mesial-tilt second molar upstanding appliance comprising: the appliance comprises an appliance main body, a traction bulge and an elastic traction piece. By providing the appliance body for attachment to the teeth of the user, the appliance body is matched to the outer contours of the dentition of the user. The two traction bulges are respectively arranged on the buccal outer surface and the lingual outer surface of the appliance main body and are positioned at one end of the second molar to be corrected. The guide hole on the same side is suitable for the elastic traction piece to pass through, and the superposition part of the guide hole and the second molar in the initial state is 1 mm-2 mm. The second molar is straightened by wearing the appliance and the practitioner can then expand the guide hole in a direction perpendicular to the long axis of the second molar. This allows the appliance to regain the ability to correct the second molar. The user can vertically correct the second molar by using only one pair of corrector bodies. The material cost is tens of yuan, which is far lower than the cost of orthodontic treatment of the invisible dental mouthpiece.

Description

Mesial tilting second molar upright corrector

Technical Field

The application relates to the technical field of medical equipment, in particular to a mesial-inclination second molar upright corrector.

Background

The first molar is the earliest erupted permanent tooth in the oral cavity, and generally erupts around six years old, and has the characteristics of high deletion rate and early deletion due to more pits, grooves, points and gaps, poor oral hygiene of children, and the fact that parents are the reasons of treatment of primary teeth neglect. If the second molar is not restored Chang Jifa in time after the first molar is missing, the second molar is tilted toward the edentulous space, a so-called mesial tilt in the industry. Clinical work often encounters situations where the first molar is not restorative or implant due to the mesial-tilt of the second molar. The encounter often requires orthodontic treatment, i.e., a "straightening" correction of the second molar in a direction away from the first molar, thereby providing room for the restoration of the first molar.

Orthodontic methods within the industry today are generally selected by two options. One is to use a fixed correction technique, known as "steel braces". However, fixed correction of the second molar is often accomplished by an oral practitioner specializing in orthodontic correction, with relatively complex procedures and long chair side procedures. Doctors need special training of orthodontic correction technology, and the requirements on the doctors are high.

Another is to use invisible correction technique. Such correction requires that the appliance provider make multiple sets of appliances, known as "invisible braces" at a time, according to the design requirements of the practitioner. The patient changes in sequence and after one set of appliances erects the teeth to one position, the next set of appliances is used to continue moving the teeth until the target position is reached. Such corrective techniques have the advantages of comfortable and attractive wear, short chair side operation time, etc., however, the techniques require digital oral scanning, modeling, and 3D printing, costs are always high, and costs are typically thousands of yuan or more.

There is therefore a need in the industry for a low cost, easy to operate mesial-mesial second molar upright appliance.

Disclosure of Invention

In view of this, the present application proposes a mesial-tilt second molar erection appliance to solve the above-mentioned problems.

According to an aspect of the present application, there is provided a mesial-tilt second molar upstanding appliance adapted for use in a patient in whom a missing first molar results in a second molar being tilted in a mesial direction, and in which a third molar of the patient is required to be extracted or missing, comprising: an appliance body and an elastic traction member. The appliance body is U-shaped and is adapted to fit the outer contours of the dentition of a patient. The orthotic body has a traction boss and a guide bore. The guide hole is a through hole positioned at the proximal middle end of the second molar on the side of the appliance body corresponding to the missing first molar. The traction bulge is a bulge structure positioned at the distal middle end of the second molar on the side of the appliance body corresponding to the missing first molar. The elastic traction piece is detachably connected with the traction boss, and the elastic traction piece penetrates through the guide hole. The guide hole is expandable and adjustable in a direction parallel to the long axis of the second molar body in the treatment cycle.

In one possible implementation manner, the method further includes: a first retention accessory, a second retention accessory, and a third retention accessory. The first retention attachment is a rectangular block-shaped structure and is vertically disposed on the buccal side of the appliance body corresponding to the second premolars. The second retention accessory is of a rectangular block structure and is vertically arranged on the cheek side of the corrector main body corresponding to the cusp position. The third retention accessory is of a rectangular block-shaped structure and is transversely arranged on the cheek side of the appliance body corresponding to the first molar. The first retention attachment is located on a side of the appliance body on the missing first molar. The second retention accessory is located opposite the first retention accessory. The third retention accessory is located opposite the first retention accessory.

In one possible implementation, the number of traction protrusions is 2, including: the first traction bulge and the second traction bulge. The first traction projection is positioned at a buccal end of the appliance body corresponding to the side where the first molar is missing. The second traction bulge is positioned at the lingual end of the appliance body corresponding to the side where the first molar is missing. The elastic traction piece is detachably connected with the first traction bulge. The elastic traction piece is detachably connected with the second traction bulge.

In one possible implementation, the guide hole is an oblong hole, the length direction of the guide hole is parallel to the long axis perpendicular of the second molar body, and the ratio of the distance between the guide hole and the occlusal surface to the height of the dental crown is between 1/3 and 2/3.

In one possible implementation, the first traction projection is formed by two grooves at the end of the body of the appliance and a projection between the two grooves.

In one possible implementation, the second traction projection is formed by two grooves at the end of the body of the appliance and a projection between the two grooves.

In one possible implementation, the elastic traction element is a rubber band.

In one possible implementation, the elastic traction element exerts a force on the second molar of between 100g and 200 g.

In one possible implementation, the first traction protrusion is a tongue, and the first traction protrusion is fixedly connected to the appliance body.

In one possible implementation, the second traction protrusion is a tongue, and the second traction protrusion is fixedly connected to the appliance body.

The beneficial effects of this application: the present application provides for the appliance body to be secured to the teeth of a user, so that the appliance body is required to match the outer contours of the dentition of the user. At the same time, the appliance body may also provide an orbital correction for the second molar, preventing the second molar from shifting lingual or buccal during the correction process. The guide hole functions to allow the elastic traction member to pass through so that the elastic traction member can directly act on the proximal end of the second molar. The traction bulge is used for fixing the elastic traction piece, and the elastic traction piece provides acting force for correcting the second molar. All teeth except the second molar as a whole provide anchorage for correcting the second molar. The portion of the guide hole overlapping the second molar in the initial state is 1mm to 2mm. The second molar is straightened by wearing the appliance, at which time the corrective force of the elastic traction member will act on the mouthpiece. The practitioner can then expand the guide hole in a direction perpendicular to the long axis of the second molar body. The specific extended distance user can decide according to the actual use condition and correction condition. The main point is that the correction force of the elastic traction piece to the second molar is controlled to be between 100g and 200g, so that the corrector has the capacity of correcting the second molar again. The user can vertically correct the second molar by using only one pair of corrector bodies. The cost is far lower than the invisible correction cost of a plurality of auxiliary correcting devices.

Compared with a fixed correction mode, the method has similar material cost, but has no excessive requirements on correction experience of doctors, so that the general stomatologist can carry out the treatment of the second molar in the far-middle standing state. In addition, the chair is easy and convenient to operate, the occupied time beside the chair is short, and the time cost of doctors can be saved to a great extent.

Other features and aspects of the present application will become apparent from the following detailed description of exemplary embodiments, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments, features and aspects of the present application and together with the description, serve to explain the principles of the present application.

FIG. 1 illustrates a side view (teething) of a mesial-tilt second molar upstanding appliance in accordance with an embodiment of the present application;

FIG. 2 illustrates a top view of a mesial-tilt second molar upstanding appliance according to an embodiment of the present application;

fig. 3 illustrates a side view (toothless) of a mesial-tilt second molar upstanding appliance according to an embodiment of the present application.

Detailed Description

Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. In the drawings, like reference numbers indicate identical or functionally similar elements. Although various aspects of the embodiments are illustrated in the accompanying drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

It should be understood, however, that the terms "center," "longitudinal," "transverse," "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counter-clockwise," "axial," "radial," "circumferential," and the like indicate or are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description or to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

The word "exemplary" is used herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.

In addition, numerous specific details are set forth in the following detailed description in order to provide a better understanding of the present application. It will be understood by those skilled in the art that the present application may be practiced without some of these specific details. In some instances, methods, means, elements, and circuits have not been described in detail as not to unnecessarily obscure the present application.

Fig. 1 shows a side view (teething) of a mesial-tilt second molar upstanding appliance of an embodiment of the application, fig. 2 shows a top view of a mesial-tilt second molar upstanding appliance of an embodiment of the application, and fig. 3 shows a side view (teething) of a mesial-tilt second molar upstanding appliance of an embodiment of the application.

As shown in fig. 1-3, the mesial-tilt second molar upstanding appliance includes: the appliance body 10 and the elastic traction member 20. The appliance body 10 is "U" shaped and is adapted to conform to the outer contours of the dentition of a patient. The orthosis body 10 has a traction boss and guide bore 13. The guide hole 13 is a through hole located at a proximal and middle end of the second molar on the side of the appliance body 10 corresponding to the missing first molar. The traction bulge is a bulge structure located at the distal and middle end of the second molar on the side of the appliance body 10 corresponding to the missing first molar. The elastic traction member 20 is detachably connected with the traction boss, and the elastic traction member 20 penetrates the guide hole 13. The guide hole 13 is expandable and adjustable in a direction parallel to the perpendicular to the long axis of the second molar body during the treatment cycle.

In this embodiment, by providing the appliance body 10 for attachment to the user's teeth, the appliance body 10 needs to match the contours of the user's dentition. At the same time, the appliance body 10 may also provide an orbital correction for the second molar, preventing the second molar from shifting lingual or buccal during the correction process. The purpose of the guide hole 13 is to allow the elastic traction member 20 to pass through so that the elastic traction member 20 can directly act on the proximal and middle ends of the second molars. The traction bumps function to provide a fixation for the elastic traction element 20, and the elastic traction element 20 provides a force for correcting the second molar. All teeth except the second molar as a whole provide anchorage for correcting the second molar. The portion of the guide hole 13 overlapping the second molar in the initial state is 1mm to 2mm. The second molar is straightened by wearing the appliance, and the corrective force of the elastic traction member 20 will be applied to the mouthpiece. The practitioner can then expand the guide hole 13 in a direction perpendicular to the long axis of the second molar body. The specific extended distance user can decide according to the actual use condition and correction condition. The main point is that the correction force of the rubber ring to the second molar is controlled between 100g and 200g, so that the corrector has the capacity of correcting the second molar again. The user may use only one appliance body 10 to straighten the second molar from time to time. The cost is far lower than the invisible correction cost of a plurality of auxiliary correcting devices.

It should be noted that "mesial" refers to a direction close to the midline of the human body or the midline of the dentition, and "distal" refers to a direction away from the midline of the human body or the midline of the dentition. "buccal" refers to the side of the tooth that is closest to the cheek and "lingual" refers to the side of the tooth that is closest to the tongue.

In one specific embodiment, the method further comprises: first, second and third retention accessories 30, 40, 50. The first retention attachment 30 is a rectangular block-like structure, the first retention attachment 30 being disposed vertically on the buccal side of the appliance body 10 corresponding to the second premolars position. The second retention attachment 40 is a rectangular block-like structure, and the second retention attachment 40 is disposed vertically on the buccal side of the appliance body 10 corresponding to the cuspid position. The third retention attachment 50 is a rectangular block-like structure, the third retention attachment 50 being disposed laterally on the buccal side of the appliance body 10 corresponding to the first molar. The first retention attachment 30 is located on the side of the appliance body 10 on which the first molar is missing. The second retention accessory 40 is located on the opposite side of the first retention accessory 30. The third retention attachment 50 is positioned on an opposite side of the first retention attachment 30. In this design, the retention attachment is intended to adhere to the patient's corresponding teeth, and the appliance body 10 has a raised channel in a corresponding location that mates with the retention attachment. In general, for patients with relatively clean teeth, it is desirable to provide retention attachments to increase the adhesion of the appliance body 10 during use. If the teeth of the patient are messy, the patient can stably attach to the teeth of the patient without the need for the retention accessory, and the retention accessory can be omitted.

In one embodiment, the number of traction lobes is 2, including: a first traction projection 11 and a second traction projection. The first traction projection 11 is located at a buccal end of the appliance body 10 corresponding to the side where the first molar is missing. The second traction projection is located at the lingual end of the appliance body 10 corresponding to the side where the first molar is missing. The elastic traction member 20 is detachably connected with the first traction protrusion 11. The elastic traction member 20 is detachably connected with the second traction protrusion. In this design, since the position of the second molar gradually moves farther as the correction cycle proceeds, the position of the traction projection needs to be further from the position at which the second molar is expected to be corrected, and it is necessary to ensure that the guide hole 13 after correction is 3mm or more from the traction projection.

In one embodiment, the guide hole 13 is a slotted hole, the length direction of the guide hole 13 is parallel to the long axis perpendicular of the second molar body, and the ratio of the distance between the guide hole 13 and the occlusal surface to the height of the dental crown is between 1/3 and 2/3. In this design, the position and shape of the guide hole 13 can be determined by the user according to his own practical situation, and the present application is not limited, but is preferably a slotted hole according to his own practical situation and for the reason of convenience in processing. The height of the appliance body 10 can be determined by the user according to the actual use condition of the user, and the guide hole 13 is preferably located at 1/3 of the second running-in surface. The distal end of the guide bore 13 may be enlarged by grinding in a direction parallel to the long axis of the second molar body. It is necessary to ensure that the guide hole 13 is always perpendicular to the long axis of the second molar and has a height corresponding to 1/3 of the second molar near the engagement surface during the expansion process.

In one embodiment, the first traction protrusion 11 is formed by two grooves on the longitudinal edge of the end of the appliance body 10 and a protrusion between the two grooves. In this design, the specific choice of the first traction projection can be determined by the user according to his own actual use request. The recess is selected to constitute the protrusion in this application for convenience of processing.

In one embodiment, the second traction projection is formed by two grooves on the longitudinal edge of the end of the appliance body 10 and a projection between the two grooves. In this design, the specific choice of the second traction projection can be determined by the user according to his own actual use request. The recess is selected to constitute the protrusion in this application for convenience of processing.

In one embodiment, the elastic traction member 20 is a rubber band. In this design, the kind of the elastic traction member 20 is not particularly limited in this application, and the user can determine it according to his actual use. The rubber band is selected as the elastic traction member 20 according to the actual use condition of the application, and the rubber band is quite simple to obtain raw materials because the rubber band of the type is widely used in the field.

In one embodiment, the rubber band applies between 100g and 200g of force to the second molar. In this design, the user can decide to use the size of the rubber ring and apply force to the teeth according to the actual use condition. The application is preferably a 3.5 ounce, 3/16 inch rubber band that applies a corrective force to the second molar of between 100g and 200g depending on its actual use.

In one embodiment, the first traction protrusion 11 is a tongue, and the first traction protrusion 11 is fixedly connected to the corrector main body 10. In this design, the reason for choosing the tongue as the first traction tab is that the tongue is a material used in great quantities in the art, and the raw material is simpler to obtain.

In one embodiment, the second traction projection is a tongue and is fixedly coupled to the appliance body 10. In this design, the reason for choosing the tongue as the second traction tab is that the tongue is a material used in great quantities in the art, and the raw material is simpler to obtain.

In the actual implementation process, firstly, a plaster model of the dentition is prepared, a long-middle transverse ridge 15 is prepared by using common white plaster at the tooth-missing gap on the plaster model, the buccal-lingual width of the transverse ridge 15 is 1/2 of the buccal-lingual width of the tooth-missing gap, and the longitudinal height is based on that no interference with the teeth (possibly elongation) is generated when the plaster model is worn in an entrance; the mesial inclined second molar running-in surface is leveled with white gypsum, the height is leveled with the running-in plane, and the cheek-lingual direction is as wide as the outward high point of the inclined second molar cheek-lingual direction. If the second molar distal proximal diameter is smaller or the distance between the traction projection and the guide hole is too close, the distal surface of the inclined second molar can be shaped with white plaster, thereby extending the distal-to-medial length of the appliance.

The adjacent teeth and the opposite cuspids are attached with vertical rectangular resin projections in the gap proximity, and the opposite first molar cheek side is attached with horizontal rectangular resin projections. Manufacturing an appliance by using a high polymer material film of an orthodontic film pressing retainer with the thickness of 1mm, wherein the film is required to cover the teeth, the dentition and the mucosa 2mm above the gingiva of the teeth of the plaster model, and the mesial-oblique second molar distal surface film is completely removed; an oblong guide hole with the height of 1.5mm and the length of 3mm is arranged at the position, corresponding to the tooth-missing gap, of the appliance and close to the middle adjacent surface of the second molar; the guide hole is vertically positioned at the middle 1/3 of the middle adjacent surface of the second molar, and the far middle end of the guide hole is positioned at the far middle 1 mm-2 mm of the middle inclined middle adjacent surface of the second molar; manufacturing a traction bulge: two grooves with the depth of about 1.5mm are ground at the vertical center of the distal edge of the side surface of the second molar cheek tongue of the corrector, and the distance between the two grooves is 1 mm-1.5 mm, so that a traction bulge protruding toward the distal part is formed for hanging and pulling the leather collar. The distance between the traction bulge and the guide hole is more than or equal to 3mm, and the traction bulge is positioned at 1/3 of the position in the adjacent surface of the second molar crown in the vertical direction.

In one embodiment, the interproximal teeth, the contralateral cuspids and the buccal surfaces of the first molar teeth are etched, and the appliance is used as a template dental filling resin bonding accessory; the elastic leather ring is selected to be hung on the traction bulge on the cheek-tongue side through the guide hole on the cheek-tongue side of the corrector, and the elastic leather ring is pressed against the mesial-oblique second molar mesial adjacent surface. The force value is controlled between 100g and 200g, and the elastic rubber ring is replaced every 24 hours. And (3) carrying out repeated diagnosis once in 4-6 weeks, checking the retention and fitting conditions of the appliance and the acting force of the elastic rubber ring on the second molar, and if the second molar cannot be effectively erected by the force generated by the elastic rubber ring in the process of erecting the second molar, expanding the guide hole towards the direction perpendicular to the long axis of the second molar body, so that the acting force acting on the near-middle end of the second molar is increased, and continuously erecting the far-middle of the second molar until enough gaps exist to repair the first molar.

It should be noted that although the mesial-tilt second molar upstanding appliance is described above by way of example in fig. 1-3, those skilled in the art will appreciate that the present application should not be so limited. In fact, the user can flexibly set the mesial-tilt second molar upright appliance according to personal preference and/or actual application scenario, as long as the requirements are met.

The embodiments of the present application have been described above, the foregoing description is exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or the improvement of technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A mesial tilting second molar upstanding appliance adapted for use in a patient in whom a missing first molar results in tilting of the second molar in a mesial direction and in need of third molar extraction or missing of the patient, comprising: an appliance body and an elastic traction member;

the appliance body is U-shaped and is suitable for being matched with the outer contours of the dentition of a patient;

the appliance body has a traction boss and a guide hole;

the guide hole is a through hole positioned at the near middle end of the second molar on the side of the corrector main body, which is corresponding to the side where the first molar is missing;

the traction bulge is a bulge structure positioned at the middle end of the second molar, which is on the side of the corrector main body corresponding to the first molar;

the elastic traction piece is detachably connected with the traction boss, and penetrates through the guide hole;

the guide hole is expandable and adjustable in a direction perpendicular to the long axis of the second molar body during the treatment cycle.

2. The mesial-tilt second molar upstanding appliance according to claim 1, further comprising: a first retention accessory, a second retention accessory, and a third retention accessory;

the first retention accessory is of a rectangular block structure and is vertically arranged on the cheek side of the corrector main body corresponding to the second premolars;

the second retention accessory is of a rectangular block structure and is vertically arranged on the cheek side of the corrector main body corresponding to the cuspid position;

the third retention accessory is of a rectangular block structure and is transversely arranged on the cheek side of the corrector main body corresponding to the first molar;

the first retention attachment is located on a side of the appliance body on which the missing first molar is located;

the second retention accessory is located opposite the first retention accessory;

the third retention accessory is located opposite the first retention accessory.

3. The mesial-tilt second molar upstanding appliance according to claim 1, wherein the number of traction bumps is 2, comprising: a first traction lobe and a second traction lobe;

the first traction bulge is positioned at the buccal end part of the appliance main body, which corresponds to the side where the first molar is missing;

the second traction bulge is positioned at the lingual end part of the appliance body corresponding to the side where the first molar is missing;

the elastic traction piece is detachably connected with the first traction bulge;

the elastic traction piece is detachably connected with the second traction bulge.

4. The mesial-oblique second molar upstanding appliance according to claim 1, wherein the guide hole is an oblong hole, the length direction of the guide hole is perpendicular to the long axis direction of the second molar body, and the ratio of the distance between the guide hole and the engagement surface to the crown height is between 1/3 and 2/3.

5. The mesial-tilt second molar upstanding appliance according to claim 3, wherein the first traction projection is formed by two grooves at the end of the appliance body and a projection between the two grooves.

6. The mesial-tilt second molar upstanding appliance according to claim 3, wherein the second traction projection is formed by two grooves at the end of the appliance body and a projection between the two grooves.

7. The mesial-tilt second molar upstanding appliance according to claim 1, wherein the resilient traction member is a rubber band.

8. The mesial-tilt second molar upstanding corrector of claim 1 wherein the elastic traction member exerts a force on the second molar of between 100g and 200 g.

9. The mesial tilting second molar upstanding appliance according to claim 5, wherein the first traction projection is a tongue and the first traction projection is fixedly connected to the appliance body.

10. The mesial tilting second molar upstanding appliance according to claim 6, wherein the second traction projection is a tongue and the second traction projection is fixedly connected to the appliance body.