A tooth correction auxiliary device and a tooth correction device for front teeth

Abstract

The application discloses a tooth correction auxiliary device for front teeth and a tooth correction device. The tooth correction auxiliary device is fixed on a tooth correction appliance. The tooth correction appliance comprises upper front tooth crown sleeves and lower front tooth crown sleeves. The auxiliary device comprises upper jaw front tooth occlusion positioners and lower jaw front tooth occlusion positioners which are fixed on the outer walls of the upper front tooth crown sleeves and the lower front tooth crown sleeves. The upper jaw front tooth occlusion positioner is fixed on the palatal side outer wall of the upper front tooth crown sleeve. In the occlusion state, the contact surface centers of the upper jaw front tooth occlusion positioner and the lower jaw front tooth occlusion positioner are located on the lower front tooth occlusion vertical line. The transparent correction appliance provided with the occlusion positioner improves the occlusion relationship in the correction process and after the correction, and the patient obtains more stable occlusion function. In the clinical application, the disadvantages of restarting, re-preparing the transparent correction appliance or needing to correct the occlusion problem by using the fixed correction appliance method due to the occlusion problem can be avoided.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of medical devices, and relates to a tooth shaping device, in particular to a tooth correction auxiliary device for anterior teeth and a tooth correction device. BACKGROUND

[0002] The transparent aligner is obtained by scanning the patient's tooth arrangement through oral scanning, scanning the plaster model or impression after taking the model, dividing the digital tooth arrangement model into single movable digital tooth units, rearranging the tooth units to obtain the required corrected tooth arrangement, obtaining a series of intermediate digital tooth arrangement models through a step-by-step method, 3D printing the intermediate models, and using a thermoplastic forming film material to manufacture a series of transparent aligners. The patient corrects the misaligned tooth arrangement by wearing the series of transparent aligners.

[0003] The transparent aligner has many uncertainties and difficult-to-reach movement modes for tooth movement. For the treatment effect of the transparent aligner, the treatment of crowded cases and the alignment of the tooth arrangement are remarkable, but the overall treatment effect is not as good as that of the fixed aligner, mainly the occlusal contact. The transparent aligner design is based on a digital model, and the upper and lower occlusal positions of the digital model are based on the initial centric position of the patient. When the upper and lower tooth arrangements are arranged, the occlusion of the upper and lower tooth arrangements will change, but the occlusal relationship after the arrangement of the teeth is artificially determined after the movement of the digital teeth, and cannot express the actual occlusal position of the patient. At the same time, the current transparent aligner design based on the digital model lacks simulation of the relative movement position relationship of the lower jaw when the mouth is opened and closed. Therefore, after the transparent aligner is corrected, the occlusal relationship of the posterior teeth is often poor, and even the posterior teeth are open. The transparent aligner corrects the misaligned tooth arrangement, and the upper and lower aligners are separated, while the actual upper and lower tooth arrangements have occlusal relationships. The position of the anterior teeth often affects the initial occlusal position of the patient. During the correction process, it is often difficult to occlude to a stable position as the tooth position changes, which ultimately leads to poor occlusal effect. SUMMARY

[0004] The purpose of the present application is to solve the technical problem that the occlusal position determination in the design of the transparent aligner lacks the treatment of the relative movement position of the lower jaw when the mouth is opened and closed, to design an auxiliary positioning occlusal positioner in the transparent aligner, to express the normal occlusal position of the patient when wearing the upper and lower transparent aligners, to enable the patient to have a stable occlusal relationship during the process of correcting the misaligned tooth arrangement using the transparent aligner, and to solve the poor occlusal relationship of the posterior teeth and the opening of the posterior teeth caused by the inaccurate occlusal position of the anterior teeth in the correction of the transparent aligner.

[0005] In order to achieve the above object, the application provides a tooth correction auxiliary device for front teeth, which is fixed on a tooth correction appliance, and the tooth correction appliance comprises upper front tooth crown sleeves and lower front tooth crown sleeves, and the auxiliary device comprises upper front tooth bite positioners and lower front tooth bite positioners fixed on the outer walls of the upper front tooth crown sleeves and the lower front tooth crown sleeves respectively; the upper front tooth bite positioner is fixed on the palatal side outer wall of the upper front tooth crown sleeve at the position of the middle 1 / 3 or the incisal 1 / 3 of the tooth crown (when the upper front tooth bite positioner is large, the position is the middle 1 / 3, and when the upper front tooth is relatively straight, the position is the incisal 1 / 3), and the lower front tooth bite positioner is located at the incisal end or the incisal end labial side of the lower incisor; in the occlusion state, the contact surface centers of the upper front tooth bite positioner and the lower front tooth bite positioner are located on the lower front tooth occlusion vertical line; the lower front tooth occlusion vertical line is the vertical line of the upper jaw occlusion reference line, and the upper jaw occlusion reference line is determined by the connecting line of the center point of the condyle and the lingual protuberance of the upper incisor.

[0006] The "position of the middle 1 / 3 or the incisal 1 / 3 of the tooth crown" is an industry term, which refers to the 1 / 3 in the middle or the 1 / 3 close to the incisal edge of the tooth crown by equally dividing the tooth crown into three parts according to the length (or height).

[0007] Preferably, the upper front tooth bite positioner is a first protrusion integrally formed with the upper front tooth crown sleeve, and the lower front tooth bite positioner is a second protrusion integrally formed with the lower front tooth crown sleeve.

[0008] Preferably, the first protrusion is arranged at the lingual protuberance of the upper incisor of the upper front tooth crown sleeve.

[0009] Preferably, the lower front tooth bite positioner is fixed on the labial side outer wall of the lower front tooth crown sleeve.

[0010] Preferably, the lower front tooth bite positioner is located at the incisal edge outer wall of the lower front tooth crown sleeve.

[0011] Preferably, the upper front tooth bite positioner has a first bite surface, and the lower front tooth bite positioner has a second bite surface, the first bite surface and the second bite surface are in corresponding occlusion contact, so that the correct occlusion position of the upper and lower front teeth is not affected by tooth malposition and tooth movement, and the front teeth are always in the correct position during and after the correction process.

[0012] Preferably, the first bite surface is in the same plane as the incisal edge of the upper front tooth crown sleeve, and the second bite surface is parallel to the incisal edge of the lower front tooth crown sleeve, and in the occlusion state, the first bite surface and the second bite surface are mirror-symmetric.

[0013] Preferably, the connection mode of the upper front tooth bite positioner and the lower front tooth bite positioner with the upper front tooth crown sleeve and the lower front tooth crown sleeve respectively comprises any one of integral forming, bonding and welding.

[0014] Preferably, the material used in the maxillary anterior tooth occlusion positioner and the mandibular anterior tooth occlusion positioner is selected from any one of the following: a polymer resin, a bioceramic, and a silicone.

[0015] The present application also provides a dental correction device comprising: a device main body, and the dental correction auxiliary device described above.

[0016] The present application first designs an occlusion positioner on a transparent aligner to determine occlusion, which can make the upper and lower anterior teeth bite against each other regardless of the change in the position of the anterior teeth. The present application mainly solves the problem that the occlusion of the upper and lower teeth of the patient does not match the actual occlusion when the upper and lower jaws are separated during the design of the current transparent aligner, resulting in poor occlusion after correction. The present application improves the occlusion relationship during and after correction by designing a transparent aligner with an occlusion positioner, so that the patient can obtain more stable occlusion function. In clinical application, the disadvantages of restarting, re-making a transparent aligner, or using a fixed aligner to correct the occlusion problem can be avoided. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 FIG. 1 is a schematic diagram of the determination of the upper occlusal reference line and the lower anterior tooth occlusal vertical line of the present application.

[0018] Figure 2 FIG. 2 is a structural schematic diagram of a dental correction auxiliary device for anterior teeth of the present application.

[0019] Figure 3 FIG. 3 is a schematic diagram of the wearing state of a dental correction device for anterior teeth in Example 1 (upper anterior tooth labial inclination) of the present application.

[0020] Figure 4 FIG. 4 is a design schematic diagram of an occlusion positioner for upper anterior tooth labial inclination of the present application.

[0021] Figure 5 FIG. 5 is a schematic diagram of the wearing state of a dental correction device for anterior teeth in Example 2 (upper anterior tooth palatal inclination with small coverage) of the present application.

[0022] Figure 6 FIG. 6 is a design schematic diagram of an occlusion positioner for upper anterior tooth palatal inclination with small coverage of the present application.

[0023] BRIEF DESCRIPTION OF DRAWINGS

[0024] Condylar center point A

[0025] Tongue protuberance B of maxillary incisor

[0026] Incisal point C of lower incisor

[0027] Upper occlusal reference line 1

[0028] Lower anterior tooth occlusal vertical line 2

[0029] upper front teeth 10

[0030] upper front tooth crown sleeve 100

[0031] maxillary anterior tooth occlusal positioner 101

[0032] first occlusal surface 1011

[0033] lower front teeth 20

[0034] lower front tooth crown sleeve 200

[0035] mandibular anterior tooth occlusal positioner 201

[0036] second occlusal surface 2011. DETAILED DESCRIPTION

[0037] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0038] In the description of the present application, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0039] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0040] The meaning of "incisal edge" and "incisal margin" described herein can be used interchangeably, which refers to the part of the incisal edge of the incisor crown.

[0041] The "maxillary anterior tooth", "upper incisor" and "upper front tooth" described herein can be used interchangeably.

[0042] The "deep overbite" described herein is a malocclusion caused by vertical dysplasia of the upper and lower dental arches and / or upper and lower jaws. It refers to the upper and lower anterior teeth with the horizontal distance of the incisal edge over 1 / 3 of the length of the lower anterior teeth or the lower anterior teeth occluded on the 1 / 3 of the lingual side of the upper anterior teeth.

[0043] The "deep overbite" described herein refers to the horizontal distance of the incisal edge of the upper and lower anterior teeth being too large, which is the relationship between the front and back, such as the upper anterior teeth protruding and the lower anterior teeth retracting. The distance between the front and back of the incisal edge of the upper and lower anterior teeth is more than 3mm, which is called deep overbite.

[0044] As shown in Figure 1 The design concept of the present application is as follows:

[0045] (1) Take the patient's head positioning lateral film, mark the condylar center point A and the lingual protuberance B of the upper incisor on the head lateral positioning film, link the two points A and B to form the upper occlusal reference line 1; mark the lower incisor incisal point C, and draw a vertical line of the upper occlusal reference line 1 from the lower incisor incisal point C, that is, the lower anterior tooth occlusion vertical line 2. When the long axis of the lower anterior tooth 20 (i.e. the lower incisor) coincides with the vertical line 2, the occlusion of the upper and lower anterior teeth is the most stable.

[0046] (2) Design the upper anterior tooth occlusion positioner 101 at the lingual protuberance B of the upper incisor and the occlusion of the lower incisor;

[0047] (3) Design the lower anterior tooth occlusion positioner 201 at the incisal edge of the lower incisor along the lower anterior tooth occlusion vertical line 2, so that when the lower anterior tooth occlusion positioner 201 is occluded, it moves along the vertical line 2, and the contact surface center of the upper and lower anterior tooth occlusion positioners is always located on the lower anterior tooth occlusion vertical line 2.

[0048] The present application designs the upper and lower anterior tooth occlusion positioners within the vertical line of the occlusal reference line. When the position of the upper and lower anterior teeth changes, the upper and lower anterior teeth can still be occluded in the correct position with the help of the occlusion positioner.

[0049] Figure 2 As shown in the figure, the present application provides a tooth correction auxiliary device for anterior teeth, which is fixed on a tooth correction device, and the tooth correction device comprises an upper anterior tooth crown sleeve 100 and a lower anterior tooth crown sleeve 200. The auxiliary device comprises: an upper anterior tooth occlusion positioner 101 and a lower anterior tooth occlusion positioner 201 fixed on the outer wall of the upper anterior tooth crown sleeve 100 and the lower anterior tooth crown sleeve 200 respectively; wherein the upper anterior tooth occlusion positioner 101 is fixed on the palatal side outer wall of the upper anterior tooth crown sleeve 100 at the position of 1 / 3 or 1 / 3 of the incisal edge of the tooth crown; in the occlusion state, the contact surface center of the upper anterior tooth occlusion positioner 101 and the lower anterior tooth occlusion positioner 201 is located on the lower anterior tooth occlusion vertical line 2.

[0050] The upper jaw front tooth occlusion locator 101 has a first occlusion surface 1011, and the lower jaw front tooth occlusion locator 201 has a second occlusion surface 2011, the first occlusion surface 1011 and the second occlusion surface 2011 are in corresponding occlusion contact, and the upper and lower front teeth (10, 20) are induced to move to achieve correction.

[0051] In some embodiments, the first occlusion surface 1011 is in the same plane as the incisal edge of the upper front tooth crown sleeve 100, and the second occlusion surface 2011 is parallel to the incisal edge of the lower front tooth crown sleeve 200, and in the occlusion state, the first occlusion surface 1011 and the second occlusion surface 2011 are mirror symmetric.

[0052] In some embodiments, the upper jaw front tooth occlusion locator 101 is a first protrusion integrally formed with the upper front tooth crown sleeve 100, and the lower jaw front tooth occlusion locator is a second protrusion integrally formed with the lower front tooth crown sleeve. The first protrusion is arranged at the lingual protuberance of the upper incisor of the upper front tooth crown sleeve. The first protrusion and the second protrusion are triangular protrusions with opposite bottom edges.

[0053] According to the needs of clinical practice, the lower jaw front tooth occlusion locator 201 can be fixed to the incisal edge of the lower front tooth crown sleeve 200 or the incisal edge outer wall of the lower front tooth crown sleeve 200.

[0054] The connection mode of the upper jaw front tooth occlusion locator 101 and the lower jaw front tooth occlusion locator 201 with the upper front tooth crown sleeve 100 and the lower front tooth crown sleeve 200 respectively includes any one of integral forming, bonding, and welding.

[0055] The material used by the upper jaw front tooth occlusion locator 101 and the lower jaw front tooth occlusion locator 201 is selected from any one of high molecular resin, bioceramics, and silica gel.

[0056] The present application provides a dental correction device, which comprises a corrector main body and the above-mentioned dental correction auxiliary device. The corrector main body can be a current transparent corrector or other dental correction device.

[0057] The present application designs a front tooth occlusion locator in the current transparent corrector as a dental correction device, which can overcome the occlusion problem caused by the upper and lower disassociation during the correction of the current transparent corrector for the misaligned teeth. The positional relationship between the tooth movement designed by the transparent corrector and the actual positional relationship are matched through the occlusion locator.

[0058] The dental correction auxiliary device provided by the present application, i.e., the occlusion locator, can keep the front teeth in a stable occlusion state during the process of gradually correcting the mispositioning of the upper and lower front teeth from before correction to treatment, and is not interfered by the occlusion of mispositioned teeth.

[0059] In some embodiments, the locator is located on the palatal side of the maxillary clear aligner, at the position of the lingual protuberance of the maxillary incisor, and is triangular in shape when viewed from the side. The base length of the maxillary anterior occlusal locator is 2-5 mm, and the height is 2-5 mm. The mandibular anterior occlusal locator is located at the incisal end or labial side of the mandibular incisor, with a base length of 2-5 mm corresponding to the maxillary anterior locator.

[0060] Example 1: Large labial overbite of the upper anterior teeth

[0061] The clinical findings are that the patient's upper anterior teeth have a large labial overbite, such as... Figure 3 As shown in (a), this is a schematic diagram of the patient's upper and lower anterior teeth with a clear aligner. When the upper and lower anterior teeth are occlusal, the lower anterior teeth tend to bite back onto the palatal side of the upper anterior teeth, forming a deep overbite and deep overjet, as shown in (a). Figure 3 As shown in (b). For cases with significant labial overbite of the maxillary anterior teeth, the design of the maxillary anterior occlusal locator 101 and the mandibular anterior occlusal locator 201 is as follows: Figure 4 As shown: a maxillary anterior occlusal locator 101 is designed at the occlusal point of the maxillary incisor and the mandibular incisor (palatal side of the maxillary anterior teeth, middle 1 / 3 of the crown); a mandibular anterior occlusal locator 201 is designed at the incisal end of the mandibular incisor 20 along the mandibular occlusal vertical line 2.

[0062] The patient wears the orthodontic appliance of the present invention, that is, an orthodontic auxiliary device (occlusal locator) is connected to the above-mentioned transparent aligner, such as... Figure 3 As shown in (c), the mandibular anterior occlusal locator 201 is located labially on the mandibular incisor 20. During occlusion, the occlusal locator positions the teeth in a stable and comfortable position, as shown in [the image / image]. Figure 3 As shown in (d) of the present invention. After one orthodontic cycle, the patient removes the orthodontic device and achieves a good occlusal relationship after the upper and lower teeth are corrected, as shown in (e) of the present invention.

[0063] Example 2: Smaller palatal inclination and overbite of the upper anterior teeth

[0064] The clinical findings are that the patient's upper anterior teeth have a small palatal overbite, such as... Figure 5 As shown in (a), this diagram illustrates the state of the upper and lower anterior teeth of a patient wearing a clear aligner. When the upper and lower anterior teeth are in occlusion, the lower anterior teeth tend to bite back onto the palatal side of the upper anterior teeth, forming a deep overbite, as shown in (a). Figure 5 As shown in (b). For cases where the palatal inclination of the maxillary anterior teeth is relatively small, the design of the maxillary anterior occlusal locator 101 and the mandibular anterior occlusal locator 201 is as follows: Figure 6 As shown: a maxillary anterior occlusal locator 101 is designed at the occlusal point of the maxillary incisor and the mandibular incisor (palatal side of the maxillary anterior teeth, at the incisal 1 / 3 position of the crown); a mandibular anterior occlusal locator 201 is designed at the incisal end of the mandibular incisor 20 along the mandibular occlusal vertical line 2.

[0065] The patient wears the tooth correction device of the present application, i.e. the transparent aligner is connected with the correction auxiliary device (occlusal positioner) as shown in Figure 5 Fig. 5(c), at this time the lower anterior teeth occlusal positioner 201 is located at the incisal edge of the lower incisor 20. When the upper and lower teeth occlude, the teeth are in a stable and comfortable position through the occlusal positioner (101, 201), as shown in Figure 5 Fig. 5(d). After the patient wears the tooth correction device of the present application for a correction period, the tooth correction device is removed, and the upper and lower teeth are corrected to achieve a good occlusal relationship, as shown in Fig. 5(e).

[0066] In summary, the present application sets the occlusal positioner on the conventional aligner, so that when the patient's upper and lower teeth occlude, the upper and lower anterior teeth occlusal positioners always occlude in a stable and comfortable position, improving the occlusal relationship after treatment, and the patient obtains more stable occlusal function. The tooth correction auxiliary device of the present application can avoid the need to restart, re-make the transparent aligner or use the method of fixed orthodontic appliance to correct the occlusal problem in clinical application.

[0067] Although the content of the present application has been described in detail through the above preferred embodiments, it should be recognized that the above description should not be considered as a limitation of the present application. After reading the above content, various modifications and alternatives of the present application will be apparent to those skilled in the art. Therefore, the scope of protection of the present application should be defined by the appended claims.

Claims

1. A dental correction auxiliary device for front teeth, characterized in that, The auxiliary device is fixed on the dental appliance, and the dental appliance comprises upper front tooth crown sleeves and lower front tooth crown sleeves. The auxiliary device comprises upper front tooth bite positioners and lower front tooth bite positioners which are respectively fixed on the outer walls of the upper front tooth crown sleeves and the lower front tooth crown sleeves. The upper front tooth bite positioner is fixed on the palatal side outer wall of the upper front tooth crown sleeve. In the biting state, the contact surface centers of the upper front tooth bite positioner and the lower front tooth bite positioner are located on a lower front tooth bite vertical line, and the lower front tooth bite vertical line is a vertical line of an upper jaw bite reference line. The upper jaw bite reference line is determined by connecting the center point of the condyle and the lingual protuberance of the upper incisor. The upper front tooth bite positioner is designed at the lingual protuberance of the upper incisor and the biting position of the lower incisor. The lower front tooth bite positioner is designed at the incisal end of the lower incisor along the lower front tooth bite vertical line. The upper front tooth bite positioner has a first bite surface, and the lower front tooth bite positioner has a second bite surface. The first bite surface and the second bite surface are in corresponding bite contact, so that the upper and lower front teeth are not affected by tooth misalignment, and are always in the correct position during and after the correction. The first bite surface is in the same plane as the incisal edge of the upper front tooth crown sleeve, and the second bite surface is parallel to the incisal edge of the lower front tooth crown sleeve. In the biting state, the first bite surface and the second bite surface are mirror-symmetrical.

2. The dental correction aid for front teeth according to claim 1, wherein The upper front tooth bite positioner is a first protrusion which is integrally formed with the upper front tooth crown sleeve. The lower front tooth bite positioner is a second protrusion which is integrally formed with the lower front tooth crown sleeve.

3. The orthodontic auxiliary device for anterior teeth according to claim 2, wherein, The first protrusion is arranged at the lingual protuberance of the upper incisor of the upper front tooth crown sleeve.

4. The dental correction aid for front teeth according to claim 1, wherein The upper front tooth bite positioner is fixed on the palatal side outer wall of the upper front tooth crown sleeve at the middle 1 / 3 or incisal 1 / 3 of the upper crown. The lower front tooth bite positioner is located at the incisal end or the incisal end labial side of the lower incisor.

5. The orthodontic auxiliary device for anterior teeth according to claim 1, wherein, The lower front tooth bite positioner is located at the incisal edge outer wall or the labial side outer wall of the lower front tooth crown sleeve.

6. The orthodontic auxiliary device for anterior teeth according to claim 1, wherein, The connection mode of the upper front tooth bite positioner and the lower front tooth bite positioner with the upper front tooth crown sleeve and the lower front tooth crown sleeve respectively comprises any one of integral forming, bonding and welding.

7. The orthodontic auxiliary device for anterior teeth according to claim 1, wherein, The material used by the upper front tooth bite positioner and the lower front tooth bite positioner is selected from any one of high molecular resin, bioceramics and silica gel.

8. An orthodontic device, characterized by The auxiliary device comprises a main body of the appliance and the dental correction auxiliary device as claimed in any one of claims 1-7.

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