Method for manufacturing universal orthodontic archwire and orthodontic archwire

Abstract

The invention discloses a method for making a universal orthodontic archwire and the orthodontic archwire, the method comprising the following steps: 1) forming a plane rectangular coordinate system; 2) making three angles according to the average data of the dental arch angle of Chinese people; 3) making three straight lines according to the average data of the dental arch length of Chinese people; 4) obtaining six intersections of the three angles and the three straight lines; 5) adjusting the positions of the two second intersections and the two third intersections according to the shape of the dental arch of the patient; 6) drawing a circle in the plane rectangular coordinate system with r as the radius and (0, ‑r) as the center; 7) connecting the six intersections with a smooth curve passing through the circumference of the circle and the origin; 8) making an extension line along the tangent direction of the two ends of the smooth curve to form a universal orthodontic archwire model; 9) bending the orthodontic archwire according to the universal orthodontic archwire model. It is used to guide orthodontic clinical operation, reduce chairside operation time, improve correction efficiency, and is conducive to the maintenance of curative effect.

Description

Technical Field

[0001] The present invention belongs to the technical field of orthodontics, and more specifically, relates to a method for manufacturing a universal orthodontic arch wire and the orthodontic arch wire. Background Art

[0002] In orthodontic clinical treatment, the standard procedure for correcting crooked teeth is to attach each tooth to an archwire, and use the deformation and resetting ability of the archwire to pull the teeth to the target position. In clinical operations, orthodontists will bend the archwires according to the standard arch shape diagram or use pre-made archwires, and then make personalized adjustments according to the conditions of different patients. If an inappropriately shaped archwire is used for correction, the therapeutic effect may be poor, or the correction effect may not be well maintained. Existing commercially available archwires and arch shape diagrams often need to be adjusted again before clinical use, which increases the orthodontist's chairside operation time; and for some archwires made of materials that are not easy to bend, if they cannot be adjusted to a suitable arch shape, it is more likely to have a negative impact on the efficacy.

[0003] Therefore, it is expected to develop a universal orthodontic arch wire manufacturing method and orthodontic arch wire to guide orthodontic clinical operations, or to be used as a shape basis for the production of prefabricated arch wires, thereby improving correction efficiency and facilitating the maintenance of therapeutic effects. Summary of the invention

[0004] The purpose of the present invention is to provide a method for making a universal orthodontic arch wire and an orthodontic arch wire to guide orthodontic clinical operations, reduce chairside operation time, and bring convenience to clinical practice; or to provide a shape basis for the production of prefabricated arch wires, improve correction efficiency, and facilitate the maintenance of therapeutic effects.

[0005] In order to achieve the above object, the present invention provides a method for manufacturing a universal orthodontic arch wire, the method comprising the following steps:

[0006] 1) Taking the tooth midline of the standard dental arch shape of the Chinese as the Y axis, taking the contact point between the mesial surface of the central incisor of the standard dental arch shape of the Chinese and the tooth midline as the origin, establishing the X axis to form a plane rectangular coordinate system;

[0007] 2) In the third and fourth quadrants of the plane rectangular coordinate system, with the origin as the vertex and the Y axis as the angle bisector, three angles are made according to the average data of the dental arch angles of the Chinese, including: a first angle is the angle between the bilateral canines, a second angle is the angle between the bilateral first premolars, and a third angle is the angle between the bilateral first permanent molars;

[0008] 3) In the third and fourth quadrants of the plane rectangular coordinate system, three straight lines are drawn according to the average data of the dental arch length of the Chinese people, including: L1 is y=-(length of the front section of the dental arch), L2 is y=-(length of the front middle section of the dental arch), and L3 is y=-(full length of the dental arch);

[0009] 4) obtaining six intersection points of the three angles and the three straight lines, including: two first intersection points formed by the first straight line and two sides of the first angle, two second intersection points formed by the second straight line and two sides of the second angle, and two third intersection points formed by the third straight line and two sides of the third angle;

[0010] 5) In the plane rectangular coordinate system, draw a circle with r as radius and (0, -r) as center, where r represents half of the average length of the line connecting the buccal points of the bilateral first premolars of the standard dental arch morphology of the Chinese;

[0011] 6) connecting the six intersection points with a smooth curve passing through the circumference of the circle and the origin;

[0012] 7) At both ends of the smooth curve, extension lines are made along the tangent directions of both ends of the smooth curve to form a universal orthodontic archwire model;

[0013] 8) Producing the orthodontic arch wire according to the universal orthodontic arch wire model.

[0014] Optionally, the step 2) includes:

[0015] 2.1) With the origin as the vertex, the canines on both sides of the standard dental arch of the Chinese are connected to form the first angle;

[0016] 2.2) With the origin as the vertex, the first premolars on both sides of the standard dental arch of the Chinese are connected to form the second angle;

[0017] 2.3) With the origin as the vertex, the first permanent molars on both sides of the standard dental arch morphology of the Chinese are connected to form the third angle;

[0018] Optionally, the first angle is 126°, the second angle is 97°, and the third angle is 79°.

[0019] Optionally, L1 is y=-10.1 mm, L2 is y=-23.6 mm, and L3 is y=-36.8 mm.

[0020] Optionally, the step 4) further includes: adjusting the positions of the two second intersection points and the two third intersection points according to the patient's dental arch shape data.

[0021] Optionally, when the patient's arch shape is wider than the standard arch shape:

[0022] Move the two second intersection points away from the y-axis by 0.4 mm-0.6 mm;

[0023] The two third intersection points are moved 0.9 mm-1.1 mm away from the y-axis.

[0024] Optionally, when the patient's arch shape is narrower than the standard arch shape:

[0025] Move the two second intersection points toward the y-axis by 0.4 mm to 0.6 mm;

[0026] The two third intersection points are moved 0.9 mm to 1.1 mm in a direction close to the y-axis.

[0027] Optionally, the step 7) includes: the smooth curve sequentially connects the third intersection, the second intersection, and the first intersection on one side of the Y-axis, and sequentially connects the first intersection, the second intersection, and the third intersection on the other side of the Y-axis along the circumference of the circle through the origin.

[0028] Optionally, r in step 6) is 24mm-26mm; and the length of the extension line in step 8) is 19mm-21mm.

[0029] The present invention also provides a universal orthodontic arch wire, which is manufactured according to the manufacturing method of the universal orthodontic arch wire, and includes a maxillary orthodontic arch wire and a mandibular orthodontic arch wire;

[0030] The maxillary orthodontic archwire comprises a first arc segment and a first extended line segment connected to both ends of the first arc segment, wherein the first arc segment is used to connect the maxillary incisor and the maxillary canines, maxillary premolars, and maxillary first permanent molars on both sides of the maxillary incisor;

[0031] The mandibular orthodontic arch wires all include a second arc segment and a second extended line segment connected to both ends of the second arc segment, and the second arc segment is used to connect the mandibular incisor and the mandibular canines, mandibular premolars, and mandibular first permanent molars on both sides of the mandibular incisor.

[0032] Optionally, the first arc segment includes a first arc segment and a first smooth curve segment connected to both ends of the first arc segment, the first arc segment is used to connect the buccal side of the maxillary incisor, and the first smooth curve segment is used to connect the buccal sides of the maxillary canines, the maxillary premolars and the maxillary first permanent molars on both sides of the maxillary incisor.

[0033] Optionally, the radius of the first arc segment is 24 mm-26 mm.

[0034] Optionally, the second arc segment includes a second arc segment and a second smooth curve segment connected to both ends of the second arc segment, the second arc segment is used to connect the buccal side of the mandibular incisor, and the second smooth curve segment is used to connect the buccal sides of the mandibular canines, the mandibular premolars and the mandibular first permanent molars on both sides of the mandibular incisor.

[0035] Optionally, the radius of the second arc segment is 24 mm-26 mm.

[0036] Optionally, the extension direction of the first extended line segment is along the tangent direction of the end of the first arc segment; the extension direction of the second extended line segment is along the tangent direction of the end of the second arc segment.

[0037] Optionally, the lengths of the first extension line segment and the second extension line segment are 19 mm-21 mm.

[0038] Optionally, the maxillary orthodontic arch wire and the mandibular orthodontic arch wire are made of nickel-titanium alloy.

[0039] Optionally, the maxillary orthodontic arch wire and the mandibular orthodontic arch wire both include three sizes: large, medium and small.

[0040] The beneficial effects of the present invention are:

[0041] 1. The method for making universal orthodontic archwires in this scheme can guide orthodontic clinical operations, effectively reduce chairside operation time, and bring convenience to clinical practice; or it can be used as a shape basis for the production of prefabricated archwires, which can effectively improve the efficiency of correction and is more conducive to maintaining the therapeutic effect.

[0042] 2. When using the universal orthodontic archwire of this scheme, the corresponding arch size can be selected according to the actual situation of the patient, and the archwire for clinical use can be bent according to the size figure; or the archwire shape in the present invention can be used for industrial production to obtain the standard archwire commonly used by Chinese people.

[0043] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein like reference numerals generally represent like components throughout the exemplary embodiments of the present invention.

[0045] Figure 1 A schematic diagram of a method for manufacturing a universal orthodontic arch wire according to an embodiment of the present invention is shown.

[0046] Figure 2 A schematic diagram of a universal orthodontic archwire according to an embodiment of the present invention is shown.

[0047] Description of Reference Numerals

[0048] 1. Maxillary orthodontic archwire; 2. Mandibular orthodontic archwire. DETAILED DESCRIPTION

[0049] The preferred embodiments of the present invention will be described in more detail below. Although the preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0050] The invention discloses a method for manufacturing a universal orthodontic arch wire, the method comprising the following steps:

[0051] 1) Taking the tooth midline of the standard dental arch shape of the Chinese as the Y axis, taking the contact point between the mesial surface of the central incisor of the standard dental arch shape of the Chinese and the tooth midline as the origin, establish the X axis to form a plane rectangular coordinate system; wherein, the standard dental arch shape of the Chinese can be obtained based on the dental arch shape related data of the normal Chinese;

[0052] 2) In the third and fourth quadrants of the rectangular coordinate system, with the origin as the vertex and the Y axis as the angle bisector, three angles are made according to the average data of the dental arch angles of the Chinese people, including: the first angle is the angle between the bilateral canines, the second angle is the angle between the bilateral first premolars, and the third angle is the angle between the bilateral first permanent molars;

[0053] 3) In the third and fourth quadrants of the rectangular coordinate system, three straight lines were drawn based on the average data of the dental arch length of the Chinese people, including: L1 is y=-(length of the front section of the dental arch), L2 is y=-(length of the front middle section of the dental arch), and L3 is y=-(total length of the dental arch);

[0054] 4) obtaining six intersection points of the three angles and the three straight lines, including: two first intersection points formed by the first straight line and the two sides of the first angle, two second intersection points formed by the second straight line and the two sides of the second angle, and two third intersection points formed by the third straight line and the two sides of the third angle;

[0055] 5) In the rectangular coordinate system, draw a circle with r as radius and (0, -r) as center, where r represents half of the average length of the line connecting the buccal points of the bilateral first premolars in the standard dental arch morphology of the Chinese;

[0056] 6) Connect the six intersection points with a smooth curve passing through the circumference of the circle and the origin;

[0057] 7) At both ends of the smooth curve, extension lines are made along the tangent directions of both ends of the smooth curve to form a universal orthodontic archwire model;

[0058] 8) Make orthodontic arch wire according to the universal orthodontic arch wire model.

[0059] Specifically, the method for making a universal orthodontic archwire of the present scheme can guide orthodontic clinical operations, effectively reduce chairside operation time, and bring convenience to clinical practice; or it can be used as a shape basis for the production of prefabricated archwires, which can effectively improve correction efficiency and is more conducive to maintaining the therapeutic effect.

[0060] As an option, step 2) includes:

[0061] 2.1) With the origin as the vertex, connect the canines on both sides of the standard dental arch of the Chinese people to form the first angle;

[0062] 2.2) With the origin as the vertex, connect the first premolars on both sides of the standard dental arch of the Chinese people to form the second angle;

[0063] 2.3) With the origin as the vertex, connect the first permanent molars on both sides of the standard dental arch of the Chinese people to form the third angle;

[0064] As an optional solution, the first angle is 126°, the second angle is 97°, and the third angle is 79°.

[0065] As an optional solution, L1 is y=-10.1 mm, L2 is y=-23.6 mm, and L3 is y=-36.8 mm.

[0066] Specifically, the average length of the dental arch of Chinese people is 10.1mm for the front section, 13.5mm for the middle section, and 13.2mm for the back section.

[0067] As an optional solution, step 4) also includes: adjusting the positions of the two second intersection points and the two third intersection points according to the patient's dental arch shape data.

[0068] Specifically, when the positions of the second intersection point and the third intersection point are not adjusted, the orthodontic arch wire is of medium size.

[0069] As an alternative, when the patient's arch shape is wider than the standard arch shape:

[0070] Move the two second intersection points away from the y-axis by 0.4 mm to 0.6 mm;

[0071] Move the two third intersection points away from the y-axis by 0.9 mm to 1.1 mm.

[0072] Specifically, when the positions of the second intersection point and the third intersection point both move in a direction away from the y-axis, the orthodontic arch wire is of large size.

[0073] As an alternative, when the patient's arch shape is narrower than the standard arch shape:

[0074] Move the two second intersection points 0.4mm-0.6mm closer to the y-axis;

[0075] Move the two third intersection points 0.9 mm to 1.1 mm closer to the y-axis.

[0076] Specifically, when the positions of the second intersection point and the third intersection point both move toward the direction close to the y-axis, the orthodontic arch wire is of small size.

[0077] As an optional solution, step 7) includes: a smooth curve sequentially connects the third intersection, the second intersection, and the first intersection on one side of the Y-axis, and sequentially connects the first intersection, the second intersection, and the third intersection on the other side of the Y-axis along the circumference of the circle through the origin.

[0078] As an optional solution, r in step 6) is 24mm-26mm; and the length of the extension line in step 8) is 19mm-21mm.

[0079] The present invention also discloses a universal orthodontic arch wire, which is made according to the universal orthodontic arch wire making method, and includes: an upper orthodontic arch wire and a lower orthodontic arch wire;

[0080] The maxillary orthodontic archwire comprises a first arc segment and a first extended line segment connected to both ends of the first arc segment, wherein the first arc segment is used to connect the maxillary incisor and the maxillary canines, maxillary premolars and maxillary first permanent molars on both sides of the maxillary incisor;

[0081] The mandibular orthodontic archwires all include a second arc segment and a second extended line segment connected to both ends of the second arc segment, and the second arc segment is used to connect the mandibular incisor and the mandibular canines, mandibular premolars, and mandibular first permanent molars on both sides of the mandibular incisor.

[0082] Specifically, when using the universal orthodontic arch wire of the present scheme, the corresponding arch size can be selected according to the actual situation of the patient, and the arch wire for clinical use can be bent according to the size figure; or the arch wire shape in the present invention can be used for industrial production to obtain a standard arch wire commonly used by Chinese people.

[0083] As an optional scheme, the first arc segment includes a first arc segment and a first smooth curve segment connected to both ends of the first arc segment, the first arc segment is used to connect the buccal side of the maxillary incisor, and the first smooth curve segment is used to connect the buccal sides of the maxillary canines, maxillary premolars and maxillary first permanent molars on both sides of the maxillary incisor.

[0084] Specifically, the specific shape of the first smooth curve is designed according to the normal dental arch morphology of the Chinese, and is consistent with the buccal side of the maxillary canines, maxillary premolars and maxillary first permanent molars of the normal dental arch morphology of the Chinese.

[0085] As an optional solution, the radius of the first arc segment is 24 mm-26 mm.

[0086] As an optional scheme, the second arc segment includes a second arc segment and a second smooth curve segment connected to both ends of the second arc segment, the second arc segment is used to connect the buccal side of the mandibular incisor, and the second smooth curve segment is used to connect the buccal sides of the mandibular canines, mandibular premolars and mandibular first permanent molars on both sides of the mandibular incisor.

[0087] Specifically, the specific shape of the second smooth curve is designed according to the normal dental arch morphology of the Chinese, and is consistent with the buccal side of the mandibular canines, mandibular premolars and mandibular first permanent molars of the normal dental arch morphology of the Chinese.

[0088] As an optional solution, the radius of the second arc segment is 24 mm-26 mm.

[0089] As an optional solution, the extension direction of the first extended line segment is along the tangent direction of the end of the first arc segment; the extension direction of the second extended line segment is along the tangent direction of the end of the second arc segment.

[0090] As an optional solution, the lengths of the first extension line segment and the second extension line segment are 19 mm-21 mm.

[0091] As an option, the maxillary and mandibular orthodontic archwires are made of nickel-titanium alloy.

[0092] Specifically, other suitable materials may also be selected.

[0093] As an option, both maxillary and mandibular orthodontic archwires are available in large, medium and small sizes.

[0094] Specifically, the middle-sized orthodontic archwire: the arch width of the first premolar area and the arch width of the first permanent molar area are consistent with the normal arch shape of Chinese people;

[0095] Large-size orthodontic archwire: The arch width of the first premolar area increases by 0.8mm-1.2mm, and the arch width of the first permanent molar area increases by 1.8mm-2.2mm;

[0096] Small-sized orthodontic archwire: The arch width of the first premolar area is reduced by 0.8mm-1.2mm, and the arch width of the first permanent molar area is reduced by 1.8mm-2.2mm;

[0097] That is, different models of orthodontic archwires have different outward expansion angles of the smooth curve segments on both sides of the arc segment. The larger the model, the greater the expansion angle.

[0098] Example

[0099] Figure 1A schematic diagram showing a method for manufacturing a universal orthodontic archwire according to the present embodiment is shown; Figure 2 A schematic diagram of a universal orthodontic archwire according to this embodiment is shown.

[0100] like Figure 1 As shown, a method for making a universal orthodontic arch wire comprises the following steps:

[0101] 1) Take the tooth midline of the standard dental arch shape of the Chinese as the Y axis, take the contact point between the mesial surface of the central incisor of the standard dental arch shape of the Chinese and the tooth midline as the origin, establish the X axis, and form a plane rectangular coordinate system;

[0102] 2) In the third and fourth quadrants of the rectangular coordinate system, with the origin as the vertex and the Y axis as the angle bisector, three angles are made based on the average data of the dental arch angles of the Chinese people, including:

[0103] 2.1) With the origin as the vertex, connect the canines on both sides of the standard dental arch of the Chinese people to form the first angle;

[0104] 2.2) With the origin as the vertex, connect the first premolars on both sides of the standard dental arch of the Chinese people to form the second angle;

[0105] 2.3) With the origin as the vertex, connect the first permanent molars on both sides of the standard dental arch of the Chinese people to form the third angle;

[0106] Among them, the first angle is 126°, the second angle is 97°, and the third angle is 79°;

[0107] 3) In the third and fourth quadrants of the rectangular coordinate system, three straight lines were drawn based on the average data of the dental arch length of the Chinese people, including: L1 is y=-(length of the front section of the dental arch), L2 is y=-(length of the front middle section of the dental arch), and L3 is y=-(total length of the dental arch), where L1 is y=-10.1mm, L2 is y=-23.6mm, and L3 is y=-36.8mm;

[0108] 4) obtaining six intersection points of the three angles and the three straight lines, including: two first intersection points formed by the first straight line and the two sides of the first angle, two second intersection points formed by the second straight line and the two sides of the second angle, and two third intersection points formed by the third straight line and the two sides of the third angle;

[0109] 5) Adjust the positions of the two second intersection points and the two third intersection points according to the shape of the patient's dental arch. The adjustment sizes are three:

[0110] Medium size: the positions of the two second intersection points and the two third intersection points remain unchanged;

[0111] Large size: Move the two second intersection points 0.5 mm away from the y-axis, and move the two third intersection points 1 mm away from the y-axis. Suitable for patients with wider dental arches.

[0112] Small size: Move the two second intersection points 0.5 mm closer to the y-axis, and move the two third intersection points 1 mm closer to the y-axis. It is suitable for patients with narrow dental arches.

[0113] 6) In the rectangular coordinate system, draw a circle with a radius of r = 25 mm and a center of (0, -25 mm), where r represents half of the average length of the line connecting the buccal points of the bilateral first premolars in the standard dental arch morphology of the Chinese;

[0114] 7) A smooth curve sequentially connects the third intersection point, the second intersection point, and the first intersection point on one side of the Y axis, and sequentially connects the first intersection point, the second intersection point, and the third intersection point on the other side of the Y axis along the circumference of the circle through the origin;

[0115] 8) At both ends of the smooth curve, make 20 mm long extension lines along the tangent direction of both ends of the smooth curve to form a universal orthodontic archwire model;

[0116] 9) Make orthodontic arch wire according to the universal orthodontic arch wire model.

[0117] The method for making universal orthodontic archwires in this scheme can guide orthodontic clinical operations, effectively reduce chairside operation time, and bring convenience to clinical practice; or it can be used as a shape basis for the production of prefabricated archwires, which can effectively improve correction efficiency and is more conducive to maintaining the therapeutic effect.

[0118] like Figure 2 The universal orthodontic arch wire shown is made according to the above-mentioned universal orthodontic arch wire making method, and includes a maxillary orthodontic arch wire 1 and a mandibular orthodontic arch wire 2;

[0119] The maxillary orthodontic archwire comprises a first arc segment and a first extended line segment connected at both ends of the first arc segment, the first arc segment is used to connect the maxillary incisor and the maxillary canines, maxillary premolars and maxillary first permanent molars on both sides of the maxillary incisor, wherein the first arc segment comprises a first circular arc segment and a first smooth curve segment connected at both ends of the first circular arc segment, the first circular arc segment is used to connect the buccal side of the maxillary incisor, and the first smooth curve segment is used to connect the maxillary canines, maxillary premolars and buccal sides of the maxillary first permanent molars on both sides of the maxillary incisor respectively;

[0120] The mandibular orthodontic archwires all include a second arc segment and a second extended line segment connected at both ends of the second arc segment, the second arc segment is used to connect the mandibular incisor and the mandibular canines, mandibular premolars, and mandibular first permanent molars on both sides of the mandibular incisor, wherein the second arc segment includes a second circular arc segment and a second smooth curve segment connected at both ends of the second circular arc segment, the second circular arc segment is used to connect the buccal side of the mandibular incisor, and the second smooth curve segment is used to connect the mandibular canines, mandibular premolars, and buccal sides of the mandibular first permanent molars on both sides of the mandibular incisor.

[0121] Among them, the radius of the first arc segment and the second arc segment is 25mm, the extension direction of the first extended line segment is along the tangent direction of the end of the first arc segment; the extension direction of the second extended line segment is along the tangent direction of the end of the second arc segment, and the length is 20mm.

[0122] Among them, the materials of maxillary orthodontic arch wire and mandibular orthodontic arch wire are nickel-titanium alloy, and both include three sizes: large, medium and small.

[0123] When using the universal orthodontic archwire of this scheme, the corresponding arch size can be selected according to the actual situation of the patient, and the archwire for clinical use can be bent according to the size figure; or the archwire shape in the present invention can be used for industrial production to obtain the standard archwire commonly used by Chinese people.

[0124] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A method for making a universal orthodontic archwire, characterized in that: The method comprises the following steps: 1) With the tooth midline of the standard dental arch shape of the Chinese as the Y axis, and the intersection of the mesial surface of the central incisor of the standard dental arch shape of the Chinese and the tooth midline as the origin, the X axis is established to form a plane rectangular coordinate system; 2) In the third and fourth quadrants of the plane rectangular coordinate system, with the origin as the vertex and the Y axis as the angle bisector, three angles are made according to the average data of the dental arch angles of the Chinese, including: the first angle is the angle between the bilateral canines, the second angle is the angle between the bilateral first premolars, and the third angle is the angle between the bilateral first permanent molars; 3) In the third and fourth quadrants of the rectangular coordinate system, three straight lines are drawn according to the average data of the dental arch length of the Chinese people, including: L1 is y=-(length of the front section of the dental arch), L2 is y=-(length of the front middle section of the dental arch), and L3 is y=-(full length of the dental arch); 4) obtaining six intersection points of the three angles and the three straight lines, including: two first intersection points formed by the first straight line and two sides of the first angle, two second intersection points formed by the second straight line and two sides of the second angle, and two third intersection points formed by the third straight line and two sides of the third angle; 5) In the rectangular coordinate system, draw a circle with r as radius and (0, -r) as center, where r represents half of the average length of the line connecting the buccal points of the bilateral first premolars of the standard dental arch morphology of the Chinese; 6) connecting the six intersection points with a smooth curve passing through the circumference of the circle and the origin; 7) At both ends of the smooth curve, extension lines are made along the tangent directions of both ends of the smooth curve to form a universal orthodontic archwire model; 8) manufacturing the orthodontic arch wire according to the universal orthodontic arch wire model; The step 2) comprises: 2.1) With the origin as the vertex, the canines on both sides of the standard dental arch of the Chinese are connected to form the first angle; 2.2) With the origin as the vertex, the first premolars on both sides of the standard dental arch of the Chinese are connected to form the second angle; 2.3) With the origin as the vertex, the first permanent molars on both sides of the standard dental arch of the Chinese are connected to form the third angle; The first angle is 126°, the second angle is 97°, and the third angle is 79°; The L1 is y=-10.1 mm, the L2 is y=-23.6 mm, and the L3 is y=-36.8 mm.

2. The method for making a universal orthodontic archwire according to claim 1, characterized in that: The step 4) further includes: adjusting the positions of the two second intersection points and the two third intersection points according to the patient's dental arch shape data.

3. The method for making a universal orthodontic archwire according to claim 2, characterized in that: When the patient's dental arch shape is wider than the standard dental arch shape: Move the two second intersection points away from the y-axis by 0.4 mm-0.6 mm; The two third intersection points are moved 0.9 mm-1.1 mm away from the y-axis.

4. The method for making a universal orthodontic archwire according to claim 2, characterized in that: When the patient's dental arch shape is narrower than the standard dental arch shape: Move the two second intersection points toward the y-axis by 0.4 mm to 0.6 mm; The two third intersection points are moved 0.9 mm to 1.1 mm in a direction close to the y-axis.

5. The method for manufacturing a universal orthodontic archwire according to claim 1, characterized in that: The step 7) includes: the smooth curve sequentially connects the third intersection, the second intersection, and the first intersection on one side of the Y axis, and sequentially connects the first intersection, the second intersection, and the third intersection on the other side of the Y axis along the circumference of the circle through the origin.

6. The method for manufacturing a universal orthodontic archwire according to claim 1, characterized in that: The r in step 6) is 24 mm-26 mm; the length of the extension line in step 8) is 19 mm-21 mm.

7. A universal orthodontic archwire, characterized in that: The universal orthodontic arch wire is manufactured according to the manufacturing method of any one of claims 1 to 6, and the universal orthodontic arch wire comprises: Maxillary orthodontic archwire and mandibular orthodontic archwire; The maxillary orthodontic archwire comprises a first arc segment and a first extended line segment connected to both ends of the first arc segment, wherein the first arc segment is used to connect the maxillary incisor and the maxillary canines, maxillary premolars, and maxillary first permanent molars on both sides of the maxillary incisor; The mandibular orthodontic arch wires all include a second arc segment and a second extended line segment connected to both ends of the second arc segment, and the second arc segment is used to connect the mandibular incisor and the mandibular canines, mandibular premolars, and mandibular first permanent molars on both sides of the mandibular incisor.

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