Correcting appliance and manufacturing method thereof

Abstract

The invention discloses an appliance and a manufacturing method thereof, the appliance comprises a lip side part, a tongue side part and a connecting part, the connecting part is connected to the lip side part and the tongue side part, and the lip side part, the connecting part and the tongue side part enclose to form an accommodating cavity for teeth to be clamped and matched; the tongue side part is provided with an arch wire groove for an arch wire to penetrate through. The manufacturing method of the orthodontic appliance comprises the following steps: acquiring dental model data of a patient, processing and printing the dental model data, bonding a twisted wire on a tooth entity model, pressing the orthodontic appliance, trimming the orthodontic appliance, bending an arch wire, threading and installing the orthodontic appliance. The correction time is shortened, the correction cost is reduced, and the comfort degree of the patient in the correction process is improved.

Description

Technical Field

[0001] The present invention relates to the field of dental medicine, and in particular to an orthodontic appliance and a manufacturing method thereof. Background Art

[0002] Generally speaking, normal teeth are arranged neatly on the jaw plane, but crowded or twisted teeth not only affect facial beauty, but may also cause oral hygiene problems, such as difficulty in cleaning, increased risk of caries and periodontal disease, etc. Tooth crowding is mainly divided into three categories, including mild crowding (I degree): the crowding of the dental arch is about 2-4mm; moderate crowding (II degree): the crowding of the dental arch is 4-8mm; and severe crowding (III degree): the crowding of the dental arch is more than 8mm.

[0003] The clinical treatment methods for teeth with different crowding degrees will also be different, including arch expansion, correction using bonding brackets after tooth extraction, etc. For cases of mild crowding of the front teeth, in many cases, it is only necessary to simply align and level the teeth, but most of the correction methods chosen clinically are to first simulate the teeth alignment of the malocclusion, and then use design software on the computer to design the expander or the correction bracket, and then make, bond, and correct it. Such a process is not only time-consuming and costly, but also makes patients feel uncomfortable and resistant to wearing expanders and orthodontic brackets in their mouths for a long time. Summary of the invention

[0004] In order to shorten the correction time and cost and improve the patient's comfort during the correction process, the present application provides a corrective appliance and a method for making the same.

[0005] In the first aspect, the present application provides an orthodontic appliance, which adopts the following technical solution: A brace comprises a labial portion, a lingual portion and a connecting portion, wherein the connecting portion is connected to the labial portion and the lingual portion, the labial portion, the connecting portion and the lingual portion forming a receiving cavity for teeth to fit into; the lingual portion is provided with an archwire slot for an archwire to pass through.

[0006] By adopting the above technical solution, for general cases of mild crowding of anterior teeth, the archwire is directly passed through the archwire grooves in the orthodontic appliance that are pressed out to match the patient's teeth, and then the orthodontic appliance is set on the corresponding teeth of the patient. The labial side of the orthodontic appliance fits tightly with the labial side of the teeth, and the lingual side of the orthodontic appliance fits tightly with the lingual side of the teeth. When the archwire is restored to the ideal state, the correction is completed. Compared with the correction method of using an expander or orthodontic bracket in the patient's mouth, the use of this orthodontic appliance provides better comfort and adaptability for the patient. The installation and replacement of the orthodontic appliance do not require complicated operations, and in the final stage, that is, after the malocclusion is corrected, the orthodontic appliance can be easily installed and replaced. The braces can also be used as retainers, that is, they maintain the ideal state of the teeth after correction for a period of time without inducing tooth relapse; compared with orthodontic metal brackets, they only have a correction function. After the correction is completed, the metal brackets are generally removed and will not be used as retainers; in addition, compared with the invisible braces solution, the invisible braces solution requires several sets of tooth models from the original state to the ideal state according to the malocclusion tooth shape, and then the braces are pressed one by one, and the braces are gradually put on according to the correction plan until the correction is completed. The correction solution of the present invention does not require teeth arrangement, but only requires a pair of braces and a correction archwire to align and level simple cases of mild crowding of the front teeth.

[0007] Preferably, the one-piece protrusion of the archwire slot is arranged on the outer side of the tongue side portion.

[0008] By adopting the above technical solution, the archwire slot can be pressed out at the same time as the orthodontic appliance is pressed, which further shortens the production time of the orthodontic appliance and reduces the cost.

[0009] Preferably, the length of the archwire slot is greater than 1 / 2 of the width of the lingual side portion and less than the width of the lingual side portion.

[0010] By adopting the above technical solution, the strength of the archwire slot integrally formed with the orthodontic appliance and the archwire can be guaranteed to produce a certain correction force, while the protruding area of ​​the archwire slot can be reduced, thereby improving the comfort of the patient.

[0011] Preferably, the outer side surface of the labial portion is provided with tooth position numbers.

[0012] By adopting the above technical solution, it is convenient for doctors to match each orthodontic appliance with the patient's teeth to avoid confusion.

[0013] In a second aspect, the present application also provides a method for manufacturing an orthodontic appliance, which adopts the following technical solution: A method for manufacturing a brace, based on the brace, the method comprises: Step 1: Obtain 3D data of the patient’s crown, gums, and roots; Step 2: Import the collected patient oral data into computer software to form a data model of the patient's dental mold and make a physical model of the teeth; Step 3: Draw a mark on the lingual side of the physical tooth model as the archwire plane, and laterally bond the twisted wire section by section at the archwire plane corresponding to each tooth; Step 4: Pressing the hard orthodontic membrane onto the tooth physical model to form the conjoined appliance by thermoplastic forming, the portion of the appliance that closely matches the lingual side of the tooth is the lingual side portion, the portion of the appliance that closely matches the labial side of the tooth is the labial side portion, and the position of the appliance corresponding to the twisted wire forms the archwire slot; Step 5: trimming and separating the conjoined appliances into individual appliances one by one; Step 6: Pass the correction archwire through the archwire slot of each of the orthodontic appliances one by one to connect the orthodontic appliances in series; Step 7: Install the orthodontic appliance on the patient's malocclusion teeth. The orthodontic appliance is made to the first premolar, and the first premolar serves as anchorage.

[0014] After making a physical model of the teeth according to the three-dimensional data model, the twisted wire is bonded to the corresponding arch wire plane of the physical model of the teeth, and then the hard orthodontic membrane is pressed to form a conjoined appliance, and then the single appliance is separated by trimming, and finally the correction arch wire is connected to each appliance in series, and the whole appliance is directly set on the patient's teeth to complete the installation; by adopting the above technical scheme, the installation and replacement of the appliance does not require complicated operations, and the hard orthodontic membrane is pressed and put on the correction arch wire to be set on the corresponding patient's teeth, and in the final stage, that is, after the malocclusion teeth are corrected, this appliance can also be used as a retainer, that is, to maintain the ideal state of the corrected teeth for a period of time without inducing tooth recurrence. And the correction scheme of the present invention does not require teeth alignment, only a pair of braces and a correction arch wire are needed to make the relatively simple case of mild crowding of the front teeth aligned and leveled.

[0015] Preferably, in step 5, the method of trimming and separating the orthodontic appliances one by one into individual orthodontic appliances comprises: Trimming the labial side and the lingual side of the conjoined appliance, and trimming the edges of the appliance with a velvet wheel to remove burrs; Trim the wire holes on both sides of the archwire slot; Separate the conjoined braces into individual braces one by one.

[0016] By adopting the above technical solution, the production of the orthodontic appliance can be completed by only performing simple trimming and separation operations according to the tooth physical model. The overall production process is simple, time-saving and low-cost.

[0017] Preferably, trimming the labial part and the lingual part of the orthodontic appliance specifically includes: trimming the labial part to 1 / 3 of the distance from the tooth incision surface on the labial side of the tooth, and trimming the lingual part to 1 / 3 above the gingival edge.

[0018] By adopting the above technical solution, the length of the labial side is shorter and the length of the lingual side is longer. While ensuring that the orthodontic appliance has a relatively sufficient holding force when installed on the corresponding teeth, it also makes it more beautiful when worn on the patient's teeth and is convenient to remove it from the teeth later.

[0019] Preferably, in step six, the correction arch wire connecting the braces in series is in an ideal shape; in step seven, during the process of installing the braces on the patient's malocclusion teeth, the correction arch wire is deformed from the ideal shape to its original state.

[0020] By adopting the above technical solution, the correction arch wire is in an ideal shape at the beginning, that is, the state of the patient's teeth when the correction is completed; when the braces are placed on the patient's teeth, the correction arch wire will be deformed as the original state of the patient's teeth is twisted; then the teeth are corrected by the elastic recovery ability of the correction arch wire, so that when the correction arch wire returns to the ideal state, it means that the correction is completed; the overall operation is simple and the correction efficiency is high.

[0021] Preferably, in step seven, the correction arch wire is bent back after passing through the arch wire slot of the orthodontic appliance corresponding to the first premolar.

[0022] By adopting the above technical solution, it is possible to avoid the correction arch wire from piercing the tongue.

[0023] In summary, the present application includes at least one of the following beneficial technical effects: 1. Compared with the correction method of using an expander or orthodontic bracket in the patient's mouth, the patient's comfort and adaptability are better; 2. The installation and replacement of the appliance do not require complicated operations, and in the final stage, that is, after the malocclusion is corrected, the appliance can also be used as a retainer, that is, to maintain the ideal state of the corrected teeth for a period of time without inducing tooth relapse; compared with orthodontic metal brackets, it only has a correction function. After the correction is completed, the metal brackets are generally removed and will not be used as retainers; 3. Compared with the invisible braces solution, the invisible braces solution requires several sets of tooth models to be arranged from the original state to the ideal state according to the malocclusion tooth shape, and then the braces are pressed one by one, and the braces are gradually put on according to the correction plan until the correction is completed. The correction solution of the present invention does not require teeth arrangement, but only requires a pair of braces and a correction archwire to align and level the simple case of mild crowding of the front teeth; 4. The production of the orthodontic appliance can be completed by simply trimming and separating the tooth model. The overall production process is simple, time-saving and cost-effective; 5. The length of the labial side is shorter, while the length of the lingual side is longer, which ensures that the appliance has sufficient holding force when installed on the corresponding teeth, and also makes it more beautiful when mounted on the patient's teeth, and facilitates the subsequent removal of the appliance from the teeth; 6. Orthodontic arch wires do not need to be bent by technicians. Preformed wires that are close to the patient's dental arch shape can be directly selected to save bending time and costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the orthodontic device according to an embodiment of the present application.

[0025] Figure 2 It is a schematic diagram of the inner structure of the orthodontic appliance according to an embodiment of the present application.

[0026] Figure 3 It is a flow chart of the method for manufacturing the orthodontic appliance according to an embodiment of the present application.

[0027] Figure 4 It is a schematic diagram of bonding twisted wire to a physical tooth model according to an embodiment of the present application.

[0028] Figure 5 It is a schematic diagram of a brace device pressed into a conjoined shape according to an embodiment of the present application.

[0029] Figure 6 It is a schematic diagram of trimming wire threading holes on both sides in an archwire slot according to an embodiment of the present application.

[0030] Figure 7 It is a schematic diagram of the ideal state of the correction arch wire in an embodiment of the present application.

[0031] Figure 8 It is a schematic diagram of the orthodontic appliance after installation according to an embodiment of the present application.

[0032] Description of reference numerals: 1. Orthodontic appliance; 11. Labial part; 12. Lingual part; 13. Connecting part; 14. Accommodating cavity; 15. Archwire slot; 16. Wire threading hole; 17. Tooth position number; 2. Tooth physical model; 3. Twisted wire; 4. Orthodontic archwire; 5. First premolar. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-8 This application is described in further detail.

[0034] The present application embodiment discloses a corrective device. Figure 1 and Figure 2The appliance 1 comprises a labial portion 11, a lingual portion 12 and a connecting portion 13, the two ends of the connecting portion 13 are respectively connected to the labial portion 11 and the lingual portion 12, the labial portion 11, the connecting portion 13 and the lingual portion 12 are pressed by a single hard orthodontic membrane, that is, the labial portion 11, the connecting portion 13 and the lingual portion 12 are integrally formed; the labial portion 11, the connecting portion 13 and the lingual portion 12 surround a receiving cavity 14, and the receiving cavity 14 is used for teeth to fit in and match. The labial portion 11 is tightly matched with the labial side of the tooth, the connecting portion 13 is tightly matched with the tooth cutting surface, and the lingual portion 12 is tightly matched with the lingual side of the tooth; the outer side of the lingual portion 12 is integrally formed with a protrusion and provided with an archwire slot 15, the length of the archwire slot 15 is greater than 1 / 2 of the width of the lingual portion 12 and less than the width of the lingual portion 12, and wire holes 16 are provided at both ends of the archwire slot 15; the outer side of the labial portion 11 is provided with a tooth position number 17 to prevent confusion.

[0035] The implementation principle of an orthodontic appliance in an embodiment of the present application is as follows: for general cases of mild crowding of anterior teeth, the archwire is directly passed through the archwire slots 15 in the orthodontic appliance 1 that are pressed out to match the patient's teeth, and then the orthodontic appliance 1 is mounted on the corresponding teeth of the patient. The labial side portion 11 of the orthodontic appliance 1 fits tightly with the labial side of the teeth, and the lingual side portion 12 of the orthodontic appliance 1 fits tightly with the lingual side of the teeth. When the archwire returns to the ideal state, the correction is completed.

[0036] The present application also discloses a method for manufacturing a corrective device. Figure 3 , the preparation method comprises the following steps: S10: Collect patient dental model data: obtain three-dimensional data of the patient's crown, gums, and roots through silicone rubber molding, three-dimensional oral scanning or oral CBCT.

[0037] S20: dental model data processing and printing: the collected patient oral data is imported into computer software to form a data model of the patient's dental model, and a dental physical model 2 is produced by 3D printing or directly using plaster powder casting.

[0038] S30: Bond the twisted wire 3 on the tooth entity model 2 (refer to Figure 4 ): According to the resin model or cast model of the patient's dental mold, draw a mark on the lingual side of the tooth physical model 2 as the arch wire plane, cut out small sections of the twisted wire 3, the length of the twisted wire 3 is shorter than the width of the tooth, and the twisted wire 3 is laterally bonded section by section at the corresponding teeth on the arch wire plane, so that the twisted wire 3 is fixed on the lingual side of the teeth of the tooth physical model 2.

[0039] S40: Appliance 1 compression (refer to Figure 5): A hard orthodontic membrane is pressed onto a tooth entity model 2 through thermoplastic forming to form a one-piece brace 1, wherein the portion of the brace 1 that fits tightly with the lingual side of the tooth is the lingual portion 12, the portion of the brace 1 that fits tightly with the labial side of the tooth is the labial portion 11, the portion of the brace 1 that fits tightly with the tooth section of the tooth is the connecting portion 13, and an archwire slot 15 is formed at a position corresponding to the brace 1 and the twisted wire 3.

[0040] S50: trimming the orthodontic appliance 1: trimming and separating the conjoined orthodontic appliances 1 one by one into individual orthodontic appliances 1.

[0041] Specific trimming and separation methods include: S501: Trim the labial part 11 and the lingual part 12 of the conjoined appliance 1, wherein the labial part 11 is trimmed to 1 / 3 of the distance from the tooth incision surface on the labial side of the tooth, and the lingual part 12 is trimmed to 1 / 3 above the gum edge; and use a velvet wheel to trim along the edge of the appliance 1 to remove burrs.

[0042] S502: Reference Figure 6 , wire holes 16 are trimmed on both sides of the archwire slot 15, and the wire holes 16 can pass 0.016-inch heat-activated orthodontic round wires.

[0043] S503: Separate the conjoined orthodontic appliances 1 into individual orthodontic appliances 1 one by one.

[0044] S60: Correction archwire 4 bends and threading: refer to Figure 7 , select a heat-activated round wire that is close to the patient's dental arch shape, and pass the correction arch wire 4 in the ideal shape through the arch wire slot 15 of each orthodontic appliance 1 one by one to connect each orthodontic appliance 1 in series.

[0045] S70: Appliance 1 installation: refer to Figure 8 In clinical operation, after the preparation work before correction, the orthodontic appliance 1 is installed on the patient's malocclusion teeth, the correction arch wire 4 is deformed from the ideal state to the original state, and the orthodontic appliance 1 is made to the first premolar 5, and the first premolar 5 serves as support; the correction arch wire 4 passes through the archwire slot 15 of the orthodontic appliance 1 corresponding to the first premolar 5 and then is bent back.

[0046] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A corrective appliance, characterized in that: The invention comprises a labial portion (11), a lingual portion (12) and a connecting portion (13); the connecting portion (13) is connected to the labial portion (11) and the lingual portion (12); the labial portion (11), the connecting portion (13) and the lingual portion (12) form a receiving cavity (14) for teeth to fit into; the lingual portion (12) is provided with an archwire slot (15) for an archwire to pass through.

2. The orthodontic appliance according to claim 1, characterized in that: The one-piece protrusion of the archwire slot (15) is arranged on the outer side surface of the tongue side portion (12).

3. The orthodontic appliance according to claim 2, characterized in that: The length of the archwire slot (15) is greater than 1 / 2 of the width of the lingual side portion (12) and less than the width of the lingual side portion (12).

4. The orthodontic appliance according to claim 1, characterized in that: The outer side surface of the labial side portion (11) is provided with tooth position numbers (17).

5. A method for manufacturing a brace, based on the brace according to any one of claims 1 to 4, characterized in that: The production method comprises: Step 1: Obtain 3D data of the patient’s crown, gums, and roots; Step 2: Import the collected patient oral data into computer software to form a data model of the patient's dental mold and make a physical model of the teeth (2); Step 3: Draw a mark on the lingual side of the physical tooth model (2) as the arch wire plane, and laterally bond the twisted wire (3) section by section at the locations corresponding to each tooth on the arch wire plane; Step 4: The hard orthodontic membrane is pressed onto the tooth entity model (2) by thermoplastic forming to form the conjoined appliance (1), wherein the portion of the appliance (1) that closely matches the lingual side of the tooth is the lingual side portion (12), and the portion of the appliance (1) that closely matches the labial side of the tooth is the labial side portion (11), and the position of the appliance (1) corresponding to the twisted wire (3) forms the archwire slot (15); Step 5: trimming and separating the conjoined braces (1) one by one into individual braces (1); Step 6: Passing the correction archwire (4) through the archwire slot (15) of each of the corrective appliances (1) one by one, and connecting the corrective appliances (1) in series; Step seven: The orthodontic appliance (1) is installed on the patient's malocclusion teeth. The orthodontic appliance (1) is made to the first premolar (5), and the first premolar (5) serves as anchorage.

6. The method for manufacturing a corrective appliance according to claim 5, characterized in that: In step 5, the method of trimming and separating the orthodontic appliances (1) one by one into individual orthodontic appliances (1) comprises: The labial side portion (11) and the lingual side portion (12) of the conjoined brace (1) are trimmed, and the edges of the brace (1) are trimmed neatly with a velvet wheel to remove burrs; Trimming the wire threading holes (16) on both sides of the archwire slot (15); The conjoined orthodontic appliances (1) are separated one by one into individual orthodontic appliances (1).

7. The method for manufacturing a corrective appliance according to claim 6, characterized in that: The trimming of the labial side (11) and the lingual side (12) of the orthodontic appliance (1) is specifically as follows: the labial side (11) is trimmed to 1 / 3 of the distance from the tooth incision surface on the labial side of the tooth, and the lingual side (12) is trimmed to 1 / 3 above the gingival edge.

8. The method for manufacturing a brace according to claim 5, characterized in that: In step six, the correction arch wire (4) connecting the braces (1) in series is shaped into an ideal state; in step seven, during the process of installing the braces (1) on the patient's malocclusion teeth, the correction arch wire (4) is deformed from the ideal state to the original state.

9. The method for manufacturing a brace according to claim 5, characterized in that: In step seven, the correction arch wire (4) is passed through the arch wire slot (15) of the orthodontic appliance (1) corresponding to the first premolar (5) and then bent back.

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