Liquid silica gel additive manufacturing customized early-stage appliance based on 3D printing

Abstract

The invention relates to the technical field of appliances, in particular to a 3D printing-based liquid silica gel additive manufacturing customized early appliance, which comprises an upper occlusion sleeve and a lower occlusion sleeve, the upper part of the upper occlusion sleeve is provided with an upper tooth socket for the insertion of maxillary teeth, the upper part of the upper occlusion sleeve is provided with lip-cheek screens on the outer side, and the lower part of the upper occlusion sleeve is provided with a lower tooth socket for the insertion of the maxillary teeth. The lip-cheek screen can move in the circumferential direction of the upper occlusal sleeve, a tongue abutting part is arranged on the upper portion of the upper occlusal sleeve and located on the inner side of the upper occlusal sleeve, the lower portion of the lower occlusal sleeve is provided with a lower tooth groove allowing lower jaw teeth to be inserted therein, and the upper occlusal sleeve and the lower occlusal sleeve are detachably connected through a connector clip. According to the orthodontic appliance, models of maxillary dentition and mandibular dentition of a patient are formed, and liquid silica gel additive manufacturing is adopted by using a 3D printer, so that customization of the orthodontic appliance according to teeth of the patient is realized, the orthodontic appliance is easier to wear and better in orthodontic effect, meanwhile, through 3D printing, the manufacturing period of the orthodontic appliance is shortened, and the manufacturing difficulty is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of orthodontic appliances, and in particular to a customized early orthodontic appliance manufactured by liquid silicone additive manufacturing based on 3D printing. Background Art

[0002] At present, as food becomes increasingly refined, children's bite and chewing function is not adequately trained, resulting in poor development of the jaw and alveolar bones. At the same time, with air pollution, children's respiratory diseases and bad mouth breathing habits are increasing. Therefore, early malocclusion is common among children. Most of the current ones use early induction appliances to correct children's malocclusion.

[0003] Existing braces for children in the growth and development stage are either designed and made of hard materials, which are not comfortable enough and painful to wear; or they are complex in structure and very difficult for clinicians to make, which is time-consuming, labor-intensive and labor-intensive. Clinicians are unwilling to make them and refuse to promote them clinically. Myofunctional braces imported from abroad are made according to the dental arch development data of foreigners. They are not suitable for the oral structure of Chinese children, are difficult to wear (often fall off), and the effect is not ideal, so they need to be improved. Summary of the invention

[0004] The purpose of the present invention is to provide a customized early orthodontic appliance manufactured by liquid silicone additive manufacturing based on 3D printing to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: A customized early orthodontic appliance made of liquid silicone additive manufacturing based on 3D printing, comprising an upper occlusal sleeve and a lower occlusal sleeve, wherein the upper portion of the upper occlusal sleeve is provided with an upper alveolar groove for inserting maxillary teeth, the upper portion of the upper occlusal sleeve and located on the outside are relatively provided with a lip-cheek screen, the lip-cheek screen can be movably arranged along the circumferential direction of the upper occlusal sleeve, the upper portion of the upper occlusal sleeve and located on the inside are provided with a tongue butt, the lower portion of the lower occlusal sleeve is provided with a lower alveolar groove for inserting mandibular teeth, and the upper occlusal sleeve and the lower occlusal sleeve are detachably connected by a connector.

[0006] Furthermore, the upper part of the upper bite sleeve is relatively concave on the outside to form a mounting groove for mounting the corresponding lip cheek screen, the upper part of the upper bite sleeve is evenly provided with plug holes along the corresponding mounting groove, and the side wall of the mounting groove is evenly distributed with positioning holes along its circumference; The bottom wall of the lip and cheek screen extends outward to form an extension portion extending into the corresponding installation groove and a plug-in column opposite and extending into the corresponding plug-in hole. A plug-in hole is provided on the extension portion corresponding to the positioning hole, and a positioning plug-in rod is provided in the plug-in hole for inserting into the corresponding positioning hole to fix the extension portion.

[0007] Furthermore, pin holes are relatively arranged in the upper and lower bite sleeves, and protrusions are relatively arranged between the inner walls of the pin holes; the plug-in connector includes pin blocks that are relatively inserted into the corresponding pin holes and connecting blocks that connect the pin blocks, and grooves are arranged on the side walls of the pin blocks for the corresponding protrusions to be inserted into.

[0008] Furthermore, the front sides of the upper bite sleeve and the lower bite sleeve are both concave to form a slot for the connecting block to be inserted into.

[0009] Furthermore, a detachable tooth pad is provided on the bottom wall of the upper tooth groove.

[0010] Furthermore, mounting holes penetrating the upper bite sleeve are evenly distributed on the bottom wall of the upper tooth groove, and a step groove is formed at the mounting hole away from the bottom wall of the upper tooth groove; a mounting column extending into the mounting hole is provided on the lower side wall of the tooth pad, and a step ring is provided on the outer side wall of the mounting column to be inserted into the step groove.

[0011] Furthermore, protrusions are evenly distributed on the front side of the lower bite sleeve.

[0012] Furthermore, a pull ring located in the slot is provided on the outer side surface of the connecting block.

[0013] Furthermore, the orthodontic appliance is made of elastic medical silicone.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention forms a model of the patient's maxillary dentition and mandibular dentition, and then uses a 3D printer to additively manufacture the appliance using liquid silicone, so that the appliance can be customized according to the patient's teeth, making the appliance easier to wear and having a better correction effect. At the same time, 3D printing can shorten the manufacturing cycle of the appliance and reduce the manufacturing difficulty.

[0015] 2. The present invention enables the lip-cheek screen to move in the corresponding installation groove, thereby being able to train the muscles at different positions of the upper lip, so that the upper lip muscles develop more comprehensively, thereby improving the effect of the orthodontic appliance.

[0016] 3. The present invention can better correct the upper alveolar of the upper occlusal sleeve or the lower alveolar of the lower occlusal pad by detachably installing the tooth pad on the bottom wall of the upper alveolar or the lower alveolar, so that the maxillary teeth fit in with the bottom wall when inserted into the upper alveolar and the mandibular teeth fit in with the bottom wall when inserted into the lower alveolar, so that the posterior teeth fit in with the bottom wall of the alveolar of the orthodontic appliance, thereby ensuring the correction effect of the orthodontic appliance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is one of the structural schematic diagrams of the early orthodontic appliance in the present invention.

[0018] Figure 2This is the second structural schematic diagram of the early orthodontic appliance in the present invention.

[0019] Figure 3 It is a schematic structural diagram of the upper occlusal sleeve in the present invention.

[0020] Figure 4 It is a schematic structural diagram of the lower bite sleeve in the present invention.

[0021] Figure 5 It is a schematic diagram of the structure of the lip-cheek screen in the present invention.

[0022] Figure 6 It is a cross-sectional schematic diagram of an early orthodontic appliance in the present invention.

[0023] Figure 7 for Figure 6 Enlarged schematic diagram of part A.

[0024] Figure 8 It is a structural schematic diagram of the connector in the present invention.

[0025] Fig. 9 It is a schematic structural diagram of the pad in the present invention.

[0026] The meanings of the numbers in the figure are as follows: 10, upper bite sleeve; 20, lower bite sleeve; 101, upper tooth groove; 110, lip cheek screen; 120, tongue stop; 130, connector; 140, protrusion; 201, lower tooth groove; 301, mounting groove; 302, positioning hole; 303, plug-in hole; 304, slot; 305, mounting hole; 511, extension; 512, plug-in hole; 513, plug-in column; 610, tooth pad; 701, pin hole; 702, protrusion; 710, pin block; 720, connecting block; 721, pull ring; 811, groove; 910, mounting column; 911, step ring. DETAILED DESCRIPTION

[0027] In order to further understand the content of the present invention, the present invention is described in detail in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments are only for explaining the present invention and are not intended to limit it.

[0028] The following is combined with Figure 1-Figure 9 This embodiment is described in further detail.

[0029] Reference Figure 1-Figure 9As shown, in this embodiment, a liquid silicone additive manufacturing customized early orthodontic appliance based on 3D printing includes an upper occlusal sleeve 10 and a lower occlusal sleeve 20. The upper portion of the upper occlusal sleeve 10 is provided with an upper tooth groove 101 for inserting maxillary teeth, and the upper portion of the upper occlusal sleeve 10 and located on the outside are relatively provided with a lip cheek screen 110, which can be movably arranged along the circumferential direction of the upper occlusal sleeve 10, and the upper portion of the upper occlusal sleeve 10 and located on the inside are provided with a tongue stop 120, and the lower portion of the lower occlusal sleeve 20 is provided with a lower tooth groove 201 for inserting mandibular teeth. The upper occlusal sleeve 10 and the lower occlusal sleeve 20 are detachably connected by a connector 130.

[0030] like Figure 1-4 As shown, the upper occlusal sleeve 10 and the lower occlusal sleeve 20 in this embodiment are arranged in a horseshoe shape, and the middle part of both of them is an arc-shaped correction part. In actual use, the upper tooth groove 101 and the lower tooth groove 201 are opened according to the shape of the patient's maxillary dentition and mandibular dentition, that is, the upper tooth groove 101 can be formed at the upper part of the upper occlusal sleeve 10 to form a shape corresponding to the maxillary teeth, so that the maxillary teeth can be inserted into the upper tooth groove 101, and the lower tooth groove 201 can be formed at the lower part of the lower occlusal sleeve 20 to form a shape corresponding to the mandibular teeth, so that the mandibular teeth can be inserted into the lower tooth groove 201; The maxillary teeth and the mandibular teeth are fixed in the corresponding upper alveolar grooves 101 and lower alveolar grooves 201 by friction, so as to realize the occlusal wearing of the upper bite sleeve 10 and the lower bite sleeve 20 in the patient's mouth. Therefore, when an external force greater than the friction force between the maxillary teeth and the upper alveolar grooves 101 is applied, the upper bite sleeve 10 can be disassembled at the maxillary teeth, and when an external force greater than the friction force between the mandibular teeth and the lower alveolar grooves 201 is applied, the lower bite sleeve 20 can be disassembled at the mandibular teeth. In this embodiment, the orthodontic appliance is made of elastic medical silicone, that is, the upper bite sleeve 10 and the lower bite sleeve 20 are made of elastic medical silicone; wherein, the upper bite sleeve 10 and the lower bite sleeve 20 are formed based on 3D printing, firstly forming a model of the patient's maxillary dentition and mandibular dentition, and then using a 3D printer to additively manufacture the upper bite sleeve 10 and the lower bite sleeve 20 using liquid silicone. Since the position of each tooth of the patient may be abnormal, the shape of the upper bite sleeve 10 and the lower bite sleeve 20 is customized according to the patient's dentition through 3D printing technology. Through 3D printing technology, the manufacturing cycle of the orthodontic appliance is shortened, the manufacturing difficulty is reduced, and at the same time, the correction needs of the patient can be met; It should be pointed out that the early orthodontic appliance in this embodiment is mainly used for muscle function training and cannot completely correct dental malocclusion.

[0031] like Figure 1 and Figure 2As shown, in this embodiment, two lip cheek shields 110 are relatively arranged, which are slidably installed on the outer side of the correction part of the upper bite sleeve 10. When the upper bite sleeve 10 is occluded and worn on the maxillary teeth, the upper lip is covered outside the lip cheek shield 110, so that the lip cheek shield 110 stimulates the upper lip muscles to develop better. The position of the lip cheek shield 110 is movable, so that the muscles at different positions of the upper lip can be trained, so that the upper lip muscles can develop more comprehensively. In this embodiment, Figure 4 As shown, a plurality of protrusions 140 are evenly distributed on the front side of the lower bite sleeve 20, wherein the protrusions 140 are cylindrically arranged and are integrally formed on the outer side of the correction part of the lower bite sleeve 20. When the lower bite sleeve 20 is occluded and worn on the mandibular teeth, the lower lip is covered by the lower bite sleeve 20. At this time, the protrusions 140 can stimulate the lower lip muscles to promote better development of the lower lip muscles.

[0032] The lip-cheek shield 110 may also be made of elastic medical silicone. At the same time, in order to make the lip-cheek shield 110 comfortable when it abuts against the upper lip muscles, the outer side of the lip-cheek shield 110 facing the upper lip forms an arc surface that matches it.

[0033] Among them, Figure 3 As shown, the tongue butt 120 is arranged at the inner center position of the correction part of the upper occlusal sleeve 10. When the upper occlusal sleeve 10 is occluded and worn on the maxillary teeth, the structure of the tongue butt 120 can train the wearer to correct the tongue position and avoid dental problems caused by wrong tongue habits.

[0034] In the present embodiment, a matching fitting surface is provided between the lower portion of the upper bite sleeve 10 and the upper portion of the lower bite sleeve 20. When the fitting surfaces between the upper bite sleeve 10 and the lower bite sleeve 20 fit together, the connector 130 is provided to enable the upper bite sleeve 10 and the lower bite sleeve 20 to be assembled. Therefore, the upper bite sleeve 10 and the lower bite sleeve 20 can be worn separately, such as during the day, which can facilitate the patient's normal communication. The upper bite sleeve 10 and the lower bite sleeve 20 can be assembled and used, such as at night, with their positions fixed. When the patient wears it in the oral cavity, the appliance is not easy to shake, which can promote the development of the upper lip muscles. At the same time, the tongue resist 120 can be trained to correct the tongue position and correct bad habits.

[0035] In this embodiment, Figure 3 , Figure 5 As shown, the upper part of the upper bite sleeve 10 and the outer side are relatively concave to form a mounting groove 301 for mounting the corresponding lip cheek screen 110, and the upper part of the upper bite sleeve 10 is evenly provided with plug holes 303 along the corresponding mounting groove 301, and the side wall of the mounting groove 301 is evenly distributed with positioning holes 302 along its circumference; The bottom wall of the lip-cheek screen 110 extends outward to form an extension portion 511 extending into the corresponding installation groove 301 and a plug-in column 513 opposite to and extending into the corresponding plug-in hole 303. A plug-in hole 512 is provided on the extension portion 511 corresponding to the positioning hole 302, and a positioning plug rod is provided in the plug-in hole 512 for inserting into the corresponding positioning hole 302 to fix the extension portion 511.

[0036] In this embodiment, the mounting groove 301 is disposed on the outer side surface of the correction part of the upper occlusal sleeve 10, and is disposed along the circumference of the correction part, wherein the lip cheek shield 110 and the extension portion 511 thereon are both disposed along the circumference of the mounting groove 301, thereby enabling the lip cheek shield 110 to be preferably matched with the outer side surface of the correction part of the upper occlusal sleeve 10; The positioning rod is inserted into the corresponding positioning hole 302 through interference fit, so that the extension portion 511 is fixed in the installation groove 301. At the same time, the matching plug-in column 513 extends into the corresponding plug-in hole 303, so that the lip cheek screen 110 can be fixed more stably at the installation groove 301. There are multiple plug holes 303 and positioning holes 302 arranged along the circumference of the installation slot 301, so that when the plug posts 513 are inserted into the plug holes 303 at different positions, the positioning rods are inserted into the positioning holes 302 at different positions, so that the lip cheek screen 110 can be fixedly installed at different positions in the installation slot 301; Among them, Figure 3 As shown, the positioning holes 302 penetrate the upper occlusal sleeve 10 and are connected to the upper tooth grooves 101, thereby, a plurality of positioning holes 302 form air holes, so that when the upper occlusal sleeve 10 is occluded and worn in the patient's mouth, the air holes can correct the patient's bad habit of mouth breathing.

[0037] Combination Figure 6-8 As shown, in this embodiment, pin holes 701 are relatively provided in the upper bite sleeve 10 and the lower bite sleeve 20, and protrusions 702 are relatively provided between the inner walls of the pin holes 701; the plug-in component 130 includes pin blocks 710 that are relatively inserted into the corresponding pin holes 701 and a connecting block 720 connecting the pin blocks 710, and a groove 811 is provided on the side wall of the pin block 710 for the corresponding protrusion 702 to be inserted into.

[0038] In this embodiment, the plug-in connector 130 is made of elastic material, that is, the pin block 710 has a certain deformation ability, thereby, when the pin block 710 is extended into the corresponding pin hole 701, the protrusion 702 can be preferably inserted into the corresponding groove 811, and it is not easy for the pin block 710 in the pin hole 701 to fall out. At the same time, the pin block 710 is connected by the connecting block 720, so that the upper bite sleeve 10 and the lower bite sleeve 20 can be spliced ​​and fixed; of course, when a large external force is used, the pin block 710 can be deformed so that the pin block 710 inserted into the pin hole 701 can fall out, thereby realizing the pulling and pulling of the plug-in connector 130 in the corresponding pin hole 701, thereby realizing the assembly between the upper bite sleeve 10 and the lower bite sleeve 20; In order to improve the splicing effect of the connector 130 fixing the upper bite sleeve 10 and the lower bite sleeve 20, the outer side and the inner side of the upper bite sleeve 10 and the lower bite sleeve 20 are connected by multiple connectors 130; In the present embodiment, in order to prevent the connecting block 720 from protruding when the connector 130 is assembled with the upper bite sleeve 10 and the lower bite sleeve 20, thereby preventing the connecting block 720 from affecting the comfort of use of the orthodontic appliance, the front sides of the upper bite sleeve 10 and the lower bite sleeve 20 are both recessed to form a slot 304 for the connecting block 720 to be inserted into. At this time, in order to facilitate the pulling out of the connector 130, a pulling ring 721 located in the slot 304 is provided on the outer surface of the connecting block 720. As a result, the wearer can pull out the connector 130 by clamping the pulling ring 721 with orthodontic pliers, which is convenient for actual use.

[0039] In this embodiment, a detachable tooth pad 610 is disposed on the bottom wall of the upper tooth groove 101 .

[0040] In actual use of this embodiment, when the appliance is worn for a long time, the heavy occlusion of the posterior teeth may cause premature contact of the posterior teeth, thereby causing the posterior teeth to not fit the bottom wall of the tooth socket of the appliance, affecting the correction effect of the appliance. In this embodiment, the tooth pad 610 is provided so that the tooth pad 610 can be detachably mounted on the bottom wall of the upper alveolar 101, and the upper alveolar 101 of the upper occlusal sleeve 10 can be modified preferably so that the upper teeth fit in the bottom wall when inserted into the upper alveolar 101; wherein the tooth pad 610 is manufactured by using a 3D printer based on the model of the patient's maxillary dentition and mandibular dentition; Of course, a detachable tooth pad 610 may also be provided on the bottom wall of the lower tooth groove 201 to correct the lower tooth groove 201 of the lower occlusal sleeve 20 .

[0041] In this embodiment, mounting holes 305 penetrating the upper bite sleeve 10 are evenly distributed on the bottom wall of the upper tooth groove 101, and a step groove is formed at the mounting hole 305 away from the bottom wall of the upper tooth groove 101; a mounting column 910 extending into the mounting hole 305 is provided on the lower side wall of the tooth pad 610, and a step ring 911 that is inserted into the step groove is provided on the outer side wall of the mounting column 910.

[0042] In this embodiment, the mounting post 910 and the step ring 911 are both made of elastic material, such as elastic medical silicone, so that they can be integrally formed on the tooth pad 610, and at the same time, the step ring 911 can be deformed. Therefore, when the tooth pad 610 needs to be installed in the upper tooth groove 101 or the lower tooth groove 201, the mounting post 910 is extended into the corresponding mounting hole 305, and the step ring 911 is deformed and inserted into the step groove, so that the tooth pad 610 is installed on the bottom wall of the upper tooth groove 101 or the lower tooth groove 201. Of course, when a larger external force is used to deform the step ring 911 and disengage it from the step groove, the mounting column 910 can be disassembled from the mounting hole 305, which is convenient for practical use.

[0043] In conclusion, the above is only a preferred embodiment of the present invention, and all equivalent changes and modifications made according to the scope of the patent application of the present invention should fall within the scope of the patent of the present invention.

Claims

1. A customized early orthodontic appliance manufactured by liquid silicone additive manufacturing based on 3D printing, comprising an upper bite sleeve (10) and a lower bite sleeve (20), characterized in that: An upper tooth groove (101) for inserting maxillary teeth is provided at the upper part of the upper bite sleeve (10), a lip cheek screen (110) is provided at the upper part of the upper bite sleeve (10) and located on the outer side thereof, and the lip cheek screen (110) can be movably arranged along the circumference of the upper bite sleeve (10), a tongue stop (120) is provided at the upper part of the upper bite sleeve (10) and located on the inner side thereof, and a lower tooth groove (201) for inserting mandibular teeth is provided at the lower part of the lower bite sleeve (20), and the upper bite sleeve (10) and the lower bite sleeve (20) are detachably connected via a plug-in component (130).

2. According to claim 1, a customized early orthodontic appliance manufactured by liquid silicone additive manufacturing based on 3D printing, characterized in that: The upper portion of the upper occlusal sleeve (10) is relatively concave on the outside to form an installation groove (301) for installing the corresponding lip cheek screen (110), the upper portion of the upper occlusal sleeve (10) is evenly provided with plug holes (303) along the corresponding installation groove (301), and the side wall of the installation groove (301) is evenly distributed with positioning holes (302) along its circumference; The bottom wall of the lip-cheek screen (110) extends outward to form an extension portion (511) extending into the corresponding installation groove (301) and an insertion column (513) opposite to and extending into the corresponding insertion hole (303); an insertion hole (512) is provided on the extension portion (511) corresponding to the positioning hole (302); a positioning insertion rod is provided in the insertion hole (512) for inserting into the corresponding positioning hole (302) to fix the extension portion (511).

3. According to claim 1, a customized early orthodontic appliance manufactured by liquid silicone additive manufacturing based on 3D printing, characterized in that: The upper engaging sleeve (10) and the lower engaging sleeve (20) are provided with pin holes (701) opposite to each other, and the inner walls of the pin holes (701) are provided with protrusions (702) opposite to each other; the plug-in component (130) comprises pin blocks (710) opposite to each other and inserted into the corresponding pin holes (701) and a connecting block (720) connected to the pin blocks (710), and the side walls of the pin blocks (710) are provided with grooves (811) for the corresponding protrusions (702) to be inserted into.

4. The customized early orthodontic appliance manufactured by liquid silicone additive manufacturing based on 3D printing according to claim 3, characterized in that: The front sides of the upper bite sleeve (10) and the lower bite sleeve (20) are both concave to form a slot (304) for the connection block (720) to be inserted into.

5. The customized early orthodontic appliance manufactured by liquid silicone additive manufacturing based on 3D printing according to claim 1, characterized in that: A detachable tooth pad (610) is provided on the bottom wall of the upper tooth groove (101).

6. The customized early orthodontic appliance manufactured by liquid silicone additive manufacturing based on 3D printing according to claim 5, characterized in that: The bottom wall of the upper tooth groove (101) is evenly distributed with mounting holes (305) penetrating the upper engaging sleeve (10), and a step groove is formed at a position where the mounting holes (305) are away from the bottom wall of the upper tooth groove (101); a mounting column (910) extending into the mounting hole (305) is provided on the lower side wall of the tooth pad (610), and a step ring (911) inserted into the step groove is provided on the outer side wall of the mounting column (910).

7. The customized early orthodontic appliance manufactured by liquid silicone additive manufacturing based on 3D printing according to claim 1, characterized in that: The front side of the lower bite sleeve (20) is evenly distributed with protrusions (140).

8. The customized early orthodontic appliance manufactured by liquid silicone additive manufacturing based on 3D printing according to claim 4, characterized in that: A pull ring (721) located in the slot (304) is provided on the outer side surface of the connection block (720).

9. The customized early orthodontic appliance manufactured by liquid silicone additive manufacturing based on 3D printing according to claim 1, characterized in that: The appliance is made of elastic medical silicone.

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