Mold for manufacturing personalized silica gel appliance

Abstract

The utility model provides a mould for manufacturing a personalized silica gel appliance, which relates to the technical field of silica gel appliance preparation, and comprises an upper template, an injection template and a lower template, the surface of the upper template is provided with a corrected maxillary dentition model, the surface of the lower template is provided with a corrected mandibular dentition model, and the injection template is provided with a mandibular dentition model. The injection template is provided with a cavity, and an exhaust channel and an injection channel which are communicated with the cavity, and the exhaust channel and the injection channel are respectively positioned at the top end and the bottom end of the injection template; the upper template and the lower template are respectively buckled and fixed on the injection template, and the upper jaw dentition model and the lower jaw dentition model both extend into the cavity; according to the utility model, the upper jaw dentition model and the lower jaw dentition model are respectively arranged on the surfaces of the upper template and the lower template, so that when a machine needle is used for cutting, a cutting blind area can be avoided, and the forming precision of the appliance mold can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of preparation of silicone orthodontic appliances, in particular to a mold for making personalized silicone orthodontic appliances. Background Art

[0002] Studies have shown that the incidence of malocclusion in children and adolescents is approximately 67.8%, and unhealthy oral habits are one of the main causes of malocclusion. Statistics show that malocclusion caused by unhealthy oral habits accounts for approximately 25% of all malocclusions. The occurrence and severity of malocclusion are related to the frequency, duration, and intensity of unhealthy habits.

[0003] Myofunctional appliances are oral devices used to correct poor habits and dental and jaw developmental abnormalities. Typically made of silicone, they do not generate corrective force themselves. Instead, they stimulate contraction of the muscles surrounding the mouth when the mouth is closed or chewing, generating corrective force that remodels the teeth and jaw, ultimately producing the corrective effect.

[0004] In order to provide precise treatment for different patients, it is necessary to make personalized silicone appliances for patients based on the patient's own oral conditions, combined with design software and silicone injection molding methods, to provide better orthodontic treatment.

[0005] The steps for making silicone appliance molds are usually as follows:

[0006] 1. Obtain information (patient's intraoral model and intraoral bite record);

[0007] 2. Design a treatment plan based on the acquired information and clinical treatment plan to obtain the designed dentition data model;

[0008] 3. Based on the designed dentition data model, design personalized silicone appliance data and generate personalized molds;

[0009] 4. Use an injection machine to perform silicone injection molding on the mold;

[0010] 5. Get personalized silicone aligners.

[0011] Traditional silicone brace molds are typically made using 3D printing, using resin or polymer materials. However, using 3D printing to create molds made of these materials presents several drawbacks: organic compounds are more easily fusible and have poor thermal stability compared to inorganic compounds. This leads to greater mold deformation during the heating and molding process, resulting in greater errors in the final product. If silicone brace molds are made of metal, the grooves formed within the mold to accommodate the dental data model complicate the cutting process and create blind spots for the needle, compromising mold precision.

[0012] Therefore, the present invention aims to provide a novel mold for making personalized silicone orthodontic appliances to solve the above technical problems. Utility Model Content

[0013] The purpose of the utility model is to provide a mold for making personalized silicone braces to solve the problems existing in the above-mentioned prior art. By arranging the maxillary dentition model and the mandibular dentition model on the surfaces of the upper template and the lower template respectively, the generation of cutting blind spots can be avoided when using the turning needle for cutting, which is more conducive to ensuring the molding accuracy of the braces mold.

[0014] To achieve the above purpose, the present invention provides the following solutions:

[0015] A mold for making a personalized silicone orthodontic appliance comprises an upper template, an injection template, and a lower template; the surface of the upper template is provided with a model of the maxillary dentition after correction, the surface of the lower template is provided with a model of the mandibular dentition after correction, the injection template is provided with a mold cavity and an exhaust channel and an injection channel connected to the mold cavity, the exhaust channel and the injection channel are respectively located at the top and bottom ends of the injection template; the upper template and the lower template are respectively buckled and fixed to the injection template, and the maxillary dentition model and the mandibular dentition model both extend into the mold cavity.

[0016] Preferably, the injection channel is located in the middle of the bottom end of the injection template.

[0017] Preferably, a plurality of exhaust channels are provided and are evenly distributed on the top of the injection template.

[0018] Preferably, it further comprises an upper clamp and a lower clamp respectively fastened to the upper template and the lower template, and the upper clamp and the lower clamp are detachably fixedly connected.

[0019] Preferably, the upper clamp and the lower clamp are both groove-type structures, and the groove-type structures are used to accommodate the upper template, the injection template and the lower template. The side walls of the upper clamp and the lower clamp are respectively provided with an upper injection arc channel, a lower injection arc channel and an upper exhaust arc channel, and a lower exhaust arc channel. The upper injection arc channel and the lower injection arc channel form an injection hole opposite to the injection channel, and the upper exhaust arc channel and the lower exhaust arc channel form an exhaust hole opposite to the exhaust channel.

[0020] Preferably, positioning holes are correspondingly provided on the upper clamp and the lower clamp, and the upper clamp and the lower clamp are fixed by bolts passing through the positioning holes.

[0021] Preferably, the bolts are located on the sides of the upper template, the injection template and the lower template.

[0022] Preferably, the template, the injection template, the lower template, the upper fixture and the lower fixture are all made of aluminum alloy.

[0023] Compared with the prior art, the present invention has the following technical effects:

[0024] In the present invention, the surfaces of the upper template and the lower template are respectively provided with the maxillary dentition model and the mandibular dentition model, which can avoid the generation of cutting blind areas when using the turning needle for cutting processing, and is more conducive to ensuring the molding accuracy of the orthodontic appliance mold.

[0025] Other technical solutions of the present invention also have the following technical effects:

[0026] The utility model fixes the upper template, injection template and lower template by arranging an upper clamp and a lower clamp with positioning holes. The upper template, injection template and lower template with personalized design for different patients can be fixed without having to provide positioning holes on the personalized upper template, injection template and lower template, thereby reducing the processing complexity of the upper template, injection template and lower template and reducing the processing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 This is a schematic diagram of the preparation process of a silicone appliance mold in the prior art;

[0029] Figure 2 This is a schematic diagram of the preparation process of a mold for making a personalized silicone appliance of the present invention;

[0030] Figure 3 Schematic diagram of the coordination structure of the upper template, injection template and lower template;

[0031] Figure 4 It is a structural diagram of the upper template;

[0032] Figure 5 Schematic diagram of the structure of the injection template;

[0033] Figure 6 It is a structural diagram of the lower template;

[0034] Figure 7 The processing diagram of the lower template is shown in FIG.

[0035] Figure 8 Schematic diagram of the structure of the upper fixture and the lower fixture;

[0036] Figure 9 Schematic diagram of the matching form of the upper fixture and the lower fixture;

[0037] Figure 10 This is a schematic diagram of the overall assembly of the mold used to make personalized silicone braces;

[0038] Description of reference numerals:

[0039] 1. Upper template; 2. Injection template; 3. Lower template; 4. Maxillary dentition model; 5. Mandibular dentition model; 6. Exhaust channel; 7. Injection channel; 8. Cavity; 9. Upper fixture; 10. Lower fixture; 11. Upper injection arc channel; 12. Lower injection arc channel; 13. Upper exhaust arc channel; 14. Lower exhaust arc channel; 15. Positioning hole; 16. Bolt; 17. Nut; 18. Turning needle. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0041] The purpose of the utility model is to provide a mold for making personalized silicone braces to solve the problems existing in the above-mentioned prior art. By arranging the maxillary dentition model and the mandibular dentition model on the surfaces of the upper template and the lower template respectively, the generation of cutting blind spots can be avoided when using the turning needle for cutting, which is more conducive to ensuring the molding accuracy of the braces mold.

[0042] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0043] like Figures 3 to 7As shown, this embodiment provides a mold for making a personalized silicone braces, including an upper template 1, an injection template 2, and a lower template 3. The surface of the upper template 1 is provided with a model of the maxillary dentition 4 after correction, and the surface of the lower template 3 is provided with a model of the mandibular dentition 5 after correction. The injection template 2 is provided with a cavity 8 and an exhaust channel 6 and an injection channel 7 connected to the cavity 8. The shape of the cavity 8 is the same as the outer shape of the silicone braces, and the exhaust channel 6 and the injection channel 7 are located at the top and bottom ends of the injection template 2, respectively.

[0044] During use, the upper template 1 and the lower template 3 are fixed to either side of the injection template 2. The maxillary dentition model 4 and the mandibular dentition model 5 are both inserted into the mold cavity 8 to simulate the arrangement of the upper and lower teeth of the human body after correction. Then, silicone is injected into the mold cavity 8 through the injection channel 7 to form the mold. Since the maxillary dentition model 4 and the mandibular dentition model 5 are respectively arranged on the surfaces of the upper template 1 and the lower template 3 in this embodiment, the cutting process using the turning needle 18 can avoid the generation of cutting blind spots, which is more conducive to ensuring the molding accuracy of the orthodontic appliance mold.

[0045] It should be noted that Figure 3 The diagram only shows the assembly form of the upper template 1, injection template 2 and lower template 3. In actual use, you need to follow Figure 3 The structure shown is rotated 90° clockwise so that the injection channel 7 is located at the bottom of the cavity 8 so that the silicone can be injected.

[0046] Specifically, in this embodiment, the upper template 1, the lower template 3 and the injection template 2 are of the same size, but may have different thicknesses. When in use, they only need to be aligned and fixed at their edges.

[0047] During the molding process, the silicone needs to be heated to ensure molding quality. To ensure heat transfer efficiency, the upper mold plate 1, lower mold plate 3, and injection mold plate 2 in this embodiment are all made of aluminum alloy. When fixed, they can withstand the injection pressure and prevent deformation of the upper mold plate 1, lower mold plate 3, or injection mold plate 2.

[0048] Furthermore, in this embodiment, the injection channel 7 is located in the middle of the bottom end of the injection template 2. Multiple exhaust channels 6 are provided and evenly distributed at the top of the injection template 2, so that the silicone in the cavity 8 can squeeze out air at different positions through the exhaust channels 6 to avoid bubbles in the silicone.

[0049] Through holes can be opened on the injection template 2 at places other than the cavity 8, and through holes can be set at corresponding positions of the upper template 1 and the lower template 3, and the upper template 1, the injection template 2 and the lower template 3 are fixed by bolts 16 passing through the through holes. However, in order to make personalized designs for patients, it is rare that the upper template 1, the lower template 3 and the injection template 2 of the same patient are reused. If through holes are opened on all three, the preparation process is cumbersome and the cost is high. In order to be able to fix the upper template 1, the injection template 2 and the lower template 3 of different patients, the orthodontic appliance mold in this embodiment also includes an upper clamp 9 and a lower clamp 10 respectively buckled on the upper template 1 and the lower template 3. The upper clamp 9 and the lower clamp 10 are detachably fixedly connected, such as Figure 8 Specifically, the upper clamp 9 and the lower clamp 10 are provided with positioning holes 15, and the upper clamp 9 and the lower clamp 10 are connected and fixed by bolts 16 passing through the positioning holes 15 and matched with nuts 17, thereby clamping and fixing the upper template 1, the injection template 2 and the lower template 3. Figure 9 As shown, there is no need to set through holes or other connecting structures on the upper template 1, the injection template 2 and the lower template 3.

[0050] In this embodiment, both the upper fixture 9 and the lower fixture 10 are groove-shaped structures. When the two groove-shaped structures are buckled together, the two grooves face each other to form a accommodating cavity, which accommodates the upper template 1, the injection template 2, and the lower template 3. The size of the accommodating cavity is the same as the size of the upper template 1, the injection template 2, and the lower template 3 after being stacked, ensuring that the upper template 1, the injection template 2, and the lower template 3 fit tightly together. Furthermore, the side walls of the upper fixture 9 and the lower fixture 10 are respectively provided with an upper injection arc channel 11, a lower injection arc channel 12, and an upper exhaust arc channel 13, and a lower exhaust arc channel 14. The upper injection arc channel 11 and the lower injection arc channel 12 form an injection hole facing the injection channel 7, and the upper exhaust arc channel 13 and the lower exhaust arc channel 14 form an exhaust hole facing the exhaust channel 6. Positioning holes 15 are provided on the side walls of the upper fixture 9 and the lower fixture 10.

[0051] In order to facilitate heat transfer, the upper clamp 9 and the lower clamp 10 are both made of aluminum alloy.

[0052] The design method of the mold for making the personalized silicone appliance in this embodiment is as follows Figure 1 shown.

[0053] 1. Design a treatment plan based on the acquired information and clinical treatment plan to obtain the designed dentition data model, i.e. the dentition data model after correction;

[0054] 2. Based on the corrected dentition data model, obtain a data model of the upper template 1 having the maxillary dentition model 4;

[0055] 3. Obtain the data model of the injection template 2 based on the designed shape of the orthodontic appliance, and design the injection channel 7 and exhaust channel 6 connected to the cavity 8 in the injection template 2;

[0056] 4. Based on the corrected dentition data model, a data model of the lower template 3 having the mandibular dentition model 5 is obtained;

[0057] 5. Design a custom fixture with a cavity of the same volume as the upper mold, lower mold, and injection mold after assembly. The custom fixture is divided into an upper fixture 9 and a lower fixture 10, which are used to accurately fix the upper template 1, the injection template 2, and the lower template 3. At the same time, the custom fixture has injection holes and exhaust holes, as well as positioning holes 15 for positioning the upper fixture 9 and the lower fixture 10, and generates custom fixture data.

[0058] 6. Use a metal cutting machine to process according to the generated data and cut the aluminum alloy block to obtain: an upper template 1, an injection template 2, a lower template 3, an upper fixture 9 and a lower fixture 10.

[0059] 7. Assemble and fix the upper template 1, injection template 2, and lower template 3 in the accommodating cavity of the customized fixture in the order of top, middle, and bottom.

[0060] 8. Use bolts 16 through the positioning holes 15 and use nuts 17 to secure the custom fixture.

[0061] Adaptive changes based on actual needs are all within the protection scope of this utility model.

[0062] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A mold for making a personalized silicone brace, characterized in that: The invention comprises an upper template, an injection template and a lower template, wherein the surface of the upper template is provided with a corrected maxillary dentition model, the surface of the lower template is provided with a corrected mandibular dentition model, the injection template is provided with a mold cavity and an exhaust channel and an injection channel connected to the mold cavity, the exhaust channel and the injection channel are respectively located at the top and bottom ends of the injection template; the upper template and the lower template are respectively buckled and fixed to the injection template, and the maxillary dentition model and the mandibular dentition model both extend into the mold cavity; It also includes an upper clamp and a lower clamp respectively fastened to the upper template and the lower template, and the upper clamp and the lower clamp are detachably fixedly connected; The upper fixture and the lower fixture are both groove-type structures, and the groove-type structures are used to accommodate the upper template, the injection template and the lower template. The side walls of the upper fixture and the lower fixture are respectively provided with an upper injection arc channel, a lower injection arc channel, and an upper exhaust arc channel, and a lower exhaust arc channel. The upper injection arc channel and the lower injection arc channel form an injection hole directly opposite to the injection channel, and the upper exhaust arc channel and the lower exhaust arc channel form an exhaust hole directly opposite to the exhaust channel. Positioning holes are correspondingly provided on the upper clamp and the lower clamp, and the upper clamp and the lower clamp are fixed by bolts passing through the positioning holes.

2. The mold for making a personalized silicone appliance according to claim 1, characterized in that: The injection channel is located at the middle of the bottom end of the injection template.

3. The mold for making a personalized silicone appliance according to claim 2, characterized in that: There are multiple exhaust channels, which are evenly distributed on the top of the injection template.

4. The mold for making a personalized silicone appliance according to claim 1, characterized in that: The bolts are located on sides of the upper mold plate, the injection mold plate, and the lower mold plate.

5. The mold for making a personalized silicone appliance according to claim 1, characterized in that: The upper template, the injection template, the lower template, the upper fixture and the lower fixture are all made of aluminum alloy.

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