CN111658193A - Manufacturing method of universal orthodontic arch wire and orthodontic arch wire - Google Patents
Manufacturing method of universal orthodontic arch wire and orthodontic arch wire Download PDFInfo
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- CN111658193A CN111658193A CN202010596003.1A CN202010596003A CN111658193A CN 111658193 A CN111658193 A CN 111658193A CN 202010596003 A CN202010596003 A CN 202010596003A CN 111658193 A CN111658193 A CN 111658193A
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- A61C7/00—Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
- A61C7/12—Brackets; Arch wires; Combinations thereof; Accessories therefor
- A61C7/20—Arch wires
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- A—HUMAN NECESSITIES
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- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C7/00—Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
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Abstract
The invention discloses a method for manufacturing a universal orthodontic arch wire and the orthodontic arch wire, wherein the method comprises the following steps: 1) forming a plane rectangular coordinate system; 2) making three included angles according to average data of included angles of dental arches of Chinese people; 3) making three straight lines according to the average data of the lengths of Chinese dental arches; 4) acquiring six intersection points of the three included angles and the three straight lines; 5) adjusting the positions of the two second intersection points and the two third intersection points according to the dental arch shape of the patient; 6) drawing a circle by taking r as a radius and (0, -r) as a circle center in a plane rectangular coordinate system; 7) connecting six intersection points by using a smooth curve passing through a circular circumference and an origin; 8) making extension lines along the tangential directions of two ends of the smooth curve to form a universal orthodontic arch wire model; 9) and bending the orthodontic arch wire according to the universal orthodontic arch wire model. The method is used for guiding orthodontic clinical operation, reducing the operation time beside the chair, improving the correction efficiency and being beneficial to maintaining the curative effect.
Description
Technical Field
The invention belongs to the technical field of orthodontics, and particularly relates to a manufacturing method of a universal orthodontic arch wire and an orthodontic arch wire.
Background
In orthodontic clinical treatment, the standard procedure for correcting the tooth misalignment is to attach each tooth to an arch wire and to pull the tooth to a target position through the deformation resetting capability of the arch wire. In clinical operation, an orthodontist can bend an arch wire according to a standard arch figure or use a pre-formed arch wire, and then personalized adjustment is carried out according to the conditions of different patients. If the correction is performed by using an archwire with an improper shape, the curative effect may be poor or the correction effect may not be well maintained. The existing commercially available arch wire and arch pattern are often required to be adjusted again before clinical use, so that the chair-side operation time of an orthodontist is increased; for some arch wires made of materials which are not easy to bend, if the arch wires cannot be adjusted to be proper arch shapes, the negative effects on the curative effect are more likely to be brought.
Therefore, it is expected to develop a method for manufacturing a universal orthodontic archwire and an orthodontic archwire to guide orthodontic clinical operation or to be used as a shape basis in the production of a preformed archwire, thereby improving the orthodontic efficiency and being beneficial to maintaining the curative effect.
Disclosure of Invention
The invention aims to provide a manufacturing method of a universal orthodontic arch wire and the orthodontic arch wire, which are used for guiding orthodontic clinical operation, reducing the operation time beside a chair and bringing convenience to clinic; or the shape of the arch wire is based on the shape of the pre-formed arch wire, so that the correction efficiency is improved, and the maintenance of the curative effect is facilitated.
In order to achieve the above object, the present invention provides a method for manufacturing a universal orthodontic archwire, comprising the steps of:
1) establishing an X axis by taking the tooth center line of the Chinese standard dental arch form as a Y axis and the contact point of the mesial surface of the incisor and the tooth center line of the Chinese standard dental arch form as an origin to form a plane rectangular coordinate system;
2) in the third and fourth quadrants of the plane rectangular coordinate system, the original point is used as the vertex, the Y axis is used as the angular bisector, and three included angles are made according to the average data of the included angles of the dental arches of Chinese people, which comprises the following steps: the first included angle is an included angle between canine teeth on two sides, the second included angle is an included angle between first premolars on two sides, and the third included angle is an included angle between first constant molar teeth on two sides;
3) in the third and fourth quadrants of the rectangular plane coordinate system, three straight lines are made according to the average data of the Chinese dental arch length, including: l1 is y- (anterior arch length), L2 is y- (anterior arch length), and L3 is y- (total arch length);
4) acquiring six intersection points of the three included angles and the three straight lines, including: two first intersection points formed by the first straight line and the two sides of the first included angle, two second intersection points formed by the second straight line and the two sides of the second included angle, and two third intersection points formed by the third straight line and the two sides of the third included angle;
5) drawing a circle by taking r as a radius and (0, -r) as a circle center in the plane rectangular coordinate system, wherein r represents half of the average length of a connecting line of the buccal salient points of the first premolars on both sides of the standard arch form of the Chinese;
6) connecting the six intersection points with a smooth curve passing through the circular circumference and the origin;
7) respectively making extension lines at two ends of the smooth curve along the tangential directions of the two ends of the smooth curve to form a universal orthodontic arch wire model;
8) and manufacturing the orthodontic arch wire according to the universal orthodontic arch wire model.
Optionally, the step 2) includes:
2.1) connecting cuspids on two sides of a Chinese standard dental arch form by taking the original point as a vertex to form the first included angle;
2.2) connecting the first premolars on two sides of the standard arch form of the Chinese to form the second included angle by taking the original point as a vertex;
2.3) connecting the first constant molar teeth on two sides of the Chinese standard dental arch form by taking the original point as a vertex to form the third included angle;
optionally, the first included angle is 126 °, the second included angle is 97 °, and the third included angle is 79 °.
Optionally, the L1 is y-10.1 mm, the L2 is y-23.6 mm, and the L3 is y-36.8 mm.
Optionally, the step 4) further includes: and adjusting the positions of the two second intersection points and the two third intersection points according to the dental arch shape data of the patient.
Alternatively, when the patient's arch shape is wider than the standard arch form, then:
moving the two second intersection points to a direction far away from the y axis by 0.4-0.6 mm;
and moving the two third intersection points to a direction far away from the y axis by 0.9mm-1.1 mm.
Alternatively, when the patient's arch shape is narrower than the standard arch form, then:
moving the two second intersection points to the direction close to the y axis by 0.4mm-0.6 mm;
and moving the two third intersection points to the direction close to the y axis by 0.9mm-1.1 mm.
Optionally, the step 7) comprises: the smooth curve is sequentially connected with a third intersection point, a second intersection point and a first intersection point on one side of the Y axis, and sequentially connected with the first intersection point, the second intersection point and the third intersection point on the other side of the Y axis along the circular circumference through the origin.
Optionally, r in the step 6) is 24mm-26 mm; the length of the extension line in the step 8) is 19-21 mm.
The invention also provides a universal orthodontic arch wire, which is manufactured according to the manufacturing method of the universal orthodontic arch wire and comprises an upper jaw orthodontic arch wire and a lower jaw orthodontic arch wire;
the upper jaw orthodontic arch wire comprises a first arc-shaped section and first extension wire sections connected to two ends of the first arc-shaped section, and the first arc-shaped section is used for connecting upper jaw incisors and upper jaw canine teeth, upper jaw premolars and upper jaw first constant molars on two sides of the upper jaw incisors;
the lower jaw orthodontic arch wire comprises a second arc-shaped section and second extension line sections connected to two ends of the second arc-shaped section, and the second arc-shaped section is used for connecting a lower jaw incisor and lower jaw canine teeth, lower jaw premolars and lower jaw first constant molars on two sides of the lower jaw incisor.
Optionally, the first arc segment includes a first arc segment and first smooth curved segments connected to both ends of the first arc segment, the first arc segment is used for connecting buccal sides of the maxillary incisors, and the first smooth curved segments are respectively used for connecting buccal sides of the maxillary canine, the maxillary premolar and the maxillary first permanent molar on both sides of the maxillary incisors.
Optionally, the radius of the first circular arc segment is 24mm-26 mm.
Optionally, the second arc segment includes a second arc segment for connecting buccal sides of the mandibular incisors and second smooth curved segments connected to both ends of the second arc segment for connecting buccal sides of the mandibular incisors, the mandibular premolars and the mandibular first permanent molars on both sides of the mandibular incisors, respectively.
Optionally, the radius of the second circular arc segment is 24mm-26 mm.
Optionally, the extending direction of the first extension line segment is along the tangential direction of the end part of the first arc-shaped segment; the extension direction of the second extension line segment is along the tangential direction of the end part of the second arc-shaped segment.
Optionally, the length of the first extension line segment and the second extension line segment is 19mm-21 mm.
Optionally, the upper jaw orthodontic arch wire and the lower jaw orthodontic arch wire are made of nickel-titanium alloy.
Optionally, the upper jaw orthodontic arch wire and the lower jaw orthodontic arch wire comprise three types, namely a large type, a middle type and a small type.
The invention has the beneficial effects that:
1. the manufacturing method of the universal orthodontic arch wire can guide orthodontic clinical operation, effectively reduce the operation time beside the chair and bring convenience to clinic; or the shape basis when used for the production of preformed arch wires can effectively improve the correction efficiency and is more beneficial to maintaining the curative effect.
2. When the universal orthodontic arch wire is used, the corresponding arch size can be selected according to the actual condition of a patient, and the arch wire for clinical use can be bent according to the size graph; or the arch wire shape of the invention is used for industrial production to obtain the arch wire with the standard shape common to Chinese people.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings, in which like reference numerals generally represent like parts throughout.
Fig. 1 shows a schematic view of a method of making a universal orthodontic archwire according to one embodiment of the present invention.
Fig. 2 shows a schematic view of a universal orthodontic archwire according to one embodiment of the present invention.
Description of the reference numerals
1. An orthodontic archwire; 2. a mandibular orthodontic archwire.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the following describes preferred embodiments of the present invention, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The invention discloses a method for manufacturing a universal orthodontic arch wire, which comprises the following steps:
1) establishing an X axis by taking the tooth center line of the Chinese standard dental arch form as a Y axis and the contact point of the mesial surface of the incisor and the tooth center line of the Chinese standard dental arch form as an origin to form a plane rectangular coordinate system; wherein, the Chinese standard dental arch form can be obtained according to the data related to the dental arch form of the Chinese normal he;
2) in the third, four quadrants of plane rectangular coordinate system, use the original point as the summit, use the Y axle as the angular bisector, do three contained angles according to the average data of chinese dental arch contained angle, include: the first included angle is an included angle between canine teeth on two sides, the second included angle is an included angle between first premolars on two sides, and the third included angle is an included angle between first constant molar teeth on two sides;
3) in the third and fourth quadrants of the rectangular plane coordinate system, three straight lines are made according to the average data of the Chinese dental arch length, including: l1 is y- (anterior arch length), L2 is y- (anterior arch length), and L3 is y- (total arch length);
4) obtaining six intersection points of the three included angles and the three straight lines, including: two first intersection points formed by the first straight line and the two sides of the first included angle, two second intersection points formed by the second straight line and the two sides of the second included angle, and two third intersection points formed by the third straight line and the two sides of the third included angle;
5) drawing a circle by taking r as a radius and (0, -r) as a circle center in a plane rectangular coordinate system, wherein r represents half of the average length of a connecting line of the buccal salient points of the first premolars on both sides of the standard arch form of the Chinese;
6) connecting six intersection points by using a smooth curve passing through a circular circumference and an origin;
7) respectively making extension lines at two ends of the smooth curve along the tangential directions of the two ends of the smooth curve to form a universal orthodontic arch wire model;
8) and manufacturing the orthodontic arch wire according to the universal orthodontic arch wire model.
Specifically, the manufacturing method of the universal orthodontic arch wire can guide orthodontic clinical operation, effectively reduces the operation time beside a chair and brings convenience to clinic; or the shape basis when used for the production of preformed arch wires can effectively improve the correction efficiency and is more beneficial to maintaining the curative effect.
Alternatively, step 2) comprises:
2.1) connecting two sides of the cuspid of the Chinese standard dental arch form by taking the original point as a vertex to form a first included angle;
2.2) connecting the first premolars on two sides of the standard arch form of the Chinese to form a second included angle by taking the original point as a vertex;
2.3) connecting the first constant molar teeth on two sides of the standard arch form of the Chinese by taking the original point as a vertex to form a third included angle;
alternatively, the first included angle is 126 °, the second included angle is 97 °, and the third included angle is 79 °.
Alternatively, L1 is y-10.1 mm, L2 is y-23.6 mm, and L3 is y-36.8 mm.
Specifically, the average data of the dental arch length of Chinese people is that the front section length of the dental arch is 10.1mm, the middle section length is 13.5mm and the rear section length is 13.2 mm.
As an alternative, step 4) further comprises: and adjusting the positions of the two second intersection points and the two third intersection points according to the dental arch shape data of the patient.
Specifically, when the positions of the second intersection point and the third intersection point are not adjusted, the orthodontic archwire is of a Medium size.
Alternatively, when the patient's arch shape is wider than the standard arch form, then:
moving the two second intersection points to a direction far away from the y axis by 0.4-0.6 mm;
and moving the two third intersection points to a direction far away from the y axis by 0.9mm-1.1 mm.
Specifically, when the positions of the second intersection point and the third intersection point are both moved in the direction away from the y axis, the orthodontic archwire is of a Large (Large) size.
Alternatively, when the patient's arch shape is narrower than the standard arch form, then:
moving the two second intersection points to the direction close to the y axis by 0.4mm-0.6 mm;
and moving the two third intersection points to the direction close to the y axis by 0.9mm-1.1 mm.
Specifically, when the positions of the second intersection point and the third intersection point are both moved in the direction close to the y axis, the orthodontic archwire is Small in size.
Alternatively, step 7) comprises: the smooth curve is sequentially connected with the third intersection point, the second intersection point and the first intersection point on one side of the Y axis, and is sequentially connected with the first intersection point, the second intersection point and the third intersection point on the other side of the Y axis through the origin along the circular circumference.
Alternatively, r in step 6) is 24mm to 26 mm; the length of the extension line in the step 8) is 19mm-21 mm.
The invention also provides and discloses a universal orthodontic arch wire, which is manufactured according to the manufacturing method of the universal orthodontic arch wire, and comprises the following steps: orthodontic arch wires of upper jaw and lower jaw;
the upper jaw orthodontic arch wire comprises a first arc-shaped section and first extension line sections connected to two ends of the first arc-shaped section, and the first arc-shaped section is used for connecting upper jaw incisors and upper jaw canine teeth, upper jaw premolars and upper jaw first constant molars on two sides of the upper jaw incisors;
the lower jaw orthodontic arch wire comprises a second arc-shaped section and second extension line sections connected to two ends of the second arc-shaped section, and the second arc-shaped section is used for connecting lower jaw incisors and lower jaw canine teeth, lower jaw premolars and lower jaw first constant molars on two sides of the lower jaw incisors.
Specifically, when the universal orthodontic arch wire is used, the corresponding arch size can be selected according to the actual condition of a patient, and the arch wire for clinical use is bent according to the size graph; or the arch wire shape of the invention is used for industrial production to obtain the arch wire with the standard shape common to Chinese people.
As an alternative, the first arc-shaped segment comprises a first arc-shaped segment and first smooth curve segments connected to two ends of the first arc-shaped segment, the first arc-shaped segment is used for connecting buccal sides of maxillary incisors, and the first smooth curve segments are respectively used for connecting buccal sides of maxillary canine teeth, maxillary premolars and first maxillary permanent molars on two sides of the maxillary incisors.
Specifically, the specific shape of the first smooth curve is designed according to the arch form of the Chinese normal he, and is matched with the buccal sides of the maxillary canine, the maxillary premolar and the maxillary first permanent molar of the arch form of the Chinese normal he.
Alternatively, the first circular arc segment has a radius of 24mm to 26 mm.
As an alternative, the second arc-shaped segment includes a second arc-shaped segment and second smooth curve segments connected to two ends of the second arc-shaped segment, the second arc-shaped segment is used for connecting buccal sides of mandibular incisors, and the second smooth curve segments are respectively used for connecting buccal sides of mandibular canine teeth, mandibular premolar teeth and mandibular first permanent molars on two sides of the mandibular incisors.
Specifically, the specific shape of the second smooth curve is designed according to the dental arch form of the Chinese normal he, and is matched with the buccal sides of the lower jaw canine, the lower jaw premolar and the lower jaw first permanent molar of the dental arch form of the Chinese normal he.
Alternatively, the radius of the second circular arc segment is 24mm-26 mm.
Alternatively, the extension direction of the first extension line segment is along the tangential direction of the end of the first arc-shaped segment; the extension direction of the second extension line section is along the tangential direction of the end part of the second arc-shaped section.
Alternatively, the first and second extension line segments have a length of 19mm to 21 mm.
As an alternative, the upper jaw orthodontic arch wire and the lower jaw orthodontic arch wire are made of nickel-titanium alloy.
Specifically, other suitable materials may be selected.
As an alternative, the upper jaw orthodontic arch wire and the lower jaw orthodontic arch wire respectively comprise three types, namely a big type, a middle type and a small type.
Specifically, orthodontic archwires of medium size: the width of the dental arch of the first front molar area and the width of the dental arch of the first constant molar area are matched with the shape of the dental arch of the normal he of the Chinese;
orthodontic archwire of large size: the width of the dental arch of the first anterior molar area is increased by 0.8mm-1.2mm, and the width of the dental arch of the first constant molar area is increased by 1.8mm-2.2 mm;
orthodontic archwire of small size: the width of the dental arch of the first front molar area is reduced by 0.8mm-1.2mm, and the width of the dental arch of the first constant molar area is reduced by 1.8mm-2.2 mm;
namely, the orthodontic arch wires of different models have different outward expansion angles of the smooth curve segments on the two sides of the arc segment, and the larger the model is, the larger the expansion angle is.
Examples
Fig. 1 is a schematic view illustrating a method of making a universal orthodontic archwire of this embodiment; fig. 2 shows a schematic view of the universal orthodontic archwire of the present embodiment.
As shown in fig. 1, the method for manufacturing the universal orthodontic archwire comprises the following steps:
1) establishing an X axis by taking the tooth center line of the Chinese standard dental arch form as a Y axis and the contact point of the mesial surface of the incisor and the tooth center line of the Chinese standard dental arch form as an origin to form a plane rectangular coordinate system;
2) in the third, four quadrants of plane rectangular coordinate system, use the original point as the summit, use the Y axle as the angular bisector, do three contained angles according to the average data of chinese dental arch contained angle, include:
2.1) connecting two sides of the cuspid of the Chinese standard dental arch form by taking the original point as a vertex to form a first included angle;
2.2) connecting the first premolars on two sides of the standard arch form of the Chinese to form a second included angle by taking the original point as a vertex;
2.3) connecting the first constant molar teeth on two sides of the standard arch form of the Chinese by taking the original point as a vertex to form a third included angle;
wherein the first included angle is 126 degrees, the second included angle is 97 degrees, and the third included angle is 79 degrees;
3) in the third and fourth quadrants of the rectangular plane coordinate system, three straight lines are made according to the average data of the Chinese dental arch length, including: l1 is y- (anterior arch length), L2 is y- (anterior arch length), and L3 is y- (total arch length), wherein L1 is y-10.1 mm, L2 is y-23.6 mm, and L3 is y-36.8 mm;
4) obtaining six intersection points of the three included angles and the three straight lines, including: two first intersection points formed by the first straight line and the two sides of the first included angle, two second intersection points formed by the second straight line and the two sides of the second included angle, and two third intersection points formed by the third straight line and the two sides of the third included angle;
5) the positions of the two second intersection points and the two third intersection points are adjusted according to the dental arch shape of the patient, and the adjusted sizes are three types:
medium size: the positions of the two second intersection points and the two third intersection points are unchanged;
large size: the two second intersection points move 0.5mm in the direction far away from the y axis, and the two third intersection points move 1mm in the direction far away from the y axis, so that the dental arch support is suitable for patients with wider dental arches.
Small size: the two second intersection points are moved by 0.5mm in the direction close to the y axis, and the two third intersection points are moved by 1mm in the direction close to the y axis, so that the dental arch support is suitable for patients with narrow dental arches.
6) Drawing a circle by taking r as a radius of 25mm and taking (0 to-25 mm) as a center of the circle in a plane rectangular coordinate system, wherein r represents a half of the average length of a connecting line of convex points of first premolar cheek surfaces on two sides of a Chinese standard dental arch form;
7) the smooth curve is sequentially connected with a third intersection point, a second intersection point and a first intersection point on one side of the Y axis, and is sequentially connected with the first intersection point, the second intersection point and the third intersection point on the other side of the Y axis through an origin along the circumference of a circle;
8) respectively making 20mm long extension lines at two ends of the smooth curve along the tangential directions of the two ends of the smooth curve to form a universal orthodontic arch wire model;
9) and manufacturing the orthodontic arch wire according to the universal orthodontic arch wire model.
The manufacturing method of the universal orthodontic arch wire can guide orthodontic clinical operation, effectively reduce the operation time beside the chair and bring convenience to clinic; or the shape basis when used for the production of preformed arch wires can effectively improve the correction efficiency and is more beneficial to maintaining the curative effect.
The universal orthodontic arch wire shown in fig. 2 is manufactured according to the manufacturing method of the universal orthodontic arch wire, and comprises an upper jaw orthodontic arch wire 1 and a lower jaw orthodontic arch wire 2;
the upper jaw orthodontic arch wire comprises a first arc-shaped section and first extension line sections connected to two ends of the first arc-shaped section, the first arc-shaped section is used for connecting upper jaw incisors and upper jaw canine teeth, upper jaw premolar teeth and upper jaw first constant molar teeth on two sides of the upper jaw incisors, the first arc-shaped section comprises a first arc-shaped section and first smooth curve sections connected to two ends of the first arc-shaped section, the first arc-shaped section is used for connecting buccal sides of the upper jaw incisors, and the first smooth curve sections are respectively used for connecting the upper jaw canine teeth, the upper jaw premolar teeth and buccal sides of the upper jaw first constant molar teeth on two sides of the upper jaw incisors;
the lower jaw orthodontic arch wire comprises a second arc-shaped section and second extension line sections connected to two ends of the second arc-shaped section, the second arc-shaped section is used for connecting lower jaw incisors and lower jaw canine teeth, lower jaw premolar teeth and lower jaw first constant molar teeth on two sides of the lower jaw incisors, the second arc-shaped section comprises a second arc-shaped section and second smooth curve sections connected to two ends of the second arc-shaped section, the second arc-shaped section is used for connecting buccal sides of the lower jaw incisors, and the second smooth curve sections are respectively used for connecting the lower jaw canine teeth, the lower jaw premolar teeth and buccal sides of the lower jaw first constant molar teeth on two sides of the lower jaw incisors.
The radius of the first arc section and the radius of the second arc section are 25mm, and the extension direction of the first extension line section is along the tangential direction of the end part of the first arc section; the extension direction of the second extension line section is along the tangential direction of the end part of the second arc-shaped section, and the length of the second extension line section is 20 mm.
Wherein, the upper jaw orthodontic arch wire and the lower jaw orthodontic arch wire are made of nickel-titanium alloy and respectively comprise a big model, a middle model and a small model.
When the universal orthodontic arch wire is used, the corresponding arch size can be selected according to the actual condition of a patient, and the arch wire for clinical use can be bent according to the size graph; or the arch wire shape of the invention is used for industrial production to obtain the arch wire with the standard shape common to Chinese people.
Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
Claims (10)
1. A method of making a universal orthodontic archwire, comprising the steps of:
1) establishing an X axis by taking the tooth center line of the Chinese standard dental arch form as a Y axis and the intersection point of the mesial surface of the incisor and the tooth center line of the Chinese standard dental arch form as an origin to form a plane rectangular coordinate system;
2) in the third and fourth quadrants of the plane rectangular coordinate system, the original point is used as the vertex, the Y axis is used as the angular bisector, and three included angles are made according to the average data of the included angles of the dental arches of Chinese people, which comprises the following steps: the first included angle is an included angle between canine teeth on two sides, the second included angle is an included angle between first premolars on two sides, and the third included angle is an included angle between first constant molar teeth on two sides;
3) in the third and fourth quadrants of the rectangular plane coordinate system, three straight lines are made according to the average data of the Chinese dental arch length, including: l1 is y- (anterior arch length), L2 is y- (anterior arch length), and L3 is y- (total arch length);
4) acquiring six intersection points of the three included angles and the three straight lines, including: two first intersection points formed by the first straight line and the two sides of the first included angle, two second intersection points formed by the second straight line and the two sides of the second included angle, and two third intersection points formed by the third straight line and the two sides of the third included angle;
5) drawing a circle by taking r as a radius and (0, -r) as a circle center in the plane rectangular coordinate system, wherein r represents half of the average length of a connecting line of the buccal salient points of the first premolars on both sides of the standard arch form of the Chinese;
6) connecting the six intersection points with a smooth curve passing through the circular circumference and the origin;
7) respectively making extension lines at two ends of the smooth curve along the tangential directions of the two ends of the smooth curve to form a universal orthodontic arch wire model;
8) and manufacturing the orthodontic arch wire according to the universal orthodontic arch wire model.
2. The method of making a universal orthodontic archwire of claim 1, wherein said step 2) comprises:
2.1) connecting cuspids on two sides of a Chinese standard dental arch form by taking the original point as a vertex to form the first included angle;
2.2) connecting the first premolars on two sides of the standard arch form of the Chinese to form the second included angle by taking the original point as a vertex;
and 2.3) connecting the first constant molars at two sides of the standard arch form of the Chinese by taking the original point as a vertex to form the third included angle.
3. The method of making a universal orthodontic archwire of claims 1 or 2, wherein said first included angle is 126 °, said second included angle is 97 °, and said third included angle is 79 °.
4. The method for manufacturing a universal orthodontic archwire of claim 1, wherein said L1 is-10.1 mm, said L2 is-23.6 mm, and said L3 is-36.8 mm.
5. The method for making a universal orthodontic archwire of claim 1, wherein said step 4) further comprises: and adjusting the positions of the two second intersection points and the two third intersection points according to the dental arch shape data of the patient.
6. The method of making a universal orthodontic archwire of claim 5, wherein when the patient's dental arch shape is wider than the standard dental arch configuration:
moving the two second intersection points to a direction far away from the y axis by 0.4-0.6 mm;
and moving the two third intersection points to a direction far away from the y axis by 0.9mm-1.1 mm.
7. The method of making a universal orthodontic archwire of claim 5, wherein when the patient's arch shape is narrower than the standard arch configuration:
moving the two second intersection points to the direction close to the y axis by 0.4mm-0.6 mm;
and moving the two third intersection points to the direction close to the y axis by 0.9mm-1.1 mm.
8. The method of making a universal orthodontic archwire of claim 1, wherein said step 7) comprises: the smooth curve is sequentially connected with a third intersection point, a second intersection point and a first intersection point on one side of the Y axis, and sequentially connected with the first intersection point, the second intersection point and the third intersection point on the other side of the Y axis along the circular circumference through the origin.
9. The method for making a universal orthodontic archwire of claim 1, wherein r in step 6) is 24mm to 26 mm; the length of the extension line in the step 8) is 19-21 mm.
10. A universal orthodontic archwire formed by the method of making the universal orthodontic archwire of any one of claims 1 to 9, comprising:
orthodontic arch wires of upper jaw and lower jaw;
the upper jaw orthodontic arch wire comprises a first arc-shaped section and first extension wire sections connected to two ends of the first arc-shaped section, and the first arc-shaped section is used for connecting upper jaw incisors and upper jaw canine teeth, upper jaw premolars and upper jaw first constant molars on two sides of the upper jaw incisors;
the lower jaw orthodontic arch wire comprises a second arc-shaped section and second extension line sections connected to two ends of the second arc-shaped section, and the second arc-shaped section is used for connecting a lower jaw incisor and lower jaw canine teeth, lower jaw premolars and lower jaw first constant molars on two sides of the lower jaw incisor.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114431989A (en) * | 2022-01-07 | 2022-05-06 | 可丽尔医疗科技（常州）有限公司 | Target arch curve-based coordinate system establishing method, automatic tooth arrangement method and tooth movement evaluation method |
| CN115040275A (en) * | 2022-04-18 | 2022-09-13 | 哈尔滨理工大学 | Orthodontic arch wire evaluation method based on space translation sub-coordinate system trigram limit judgment |
-
2020
- 2020-06-28 CN CN202010596003.1A patent/CN111658193A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114431989A (en) * | 2022-01-07 | 2022-05-06 | 可丽尔医疗科技（常州）有限公司 | Target arch curve-based coordinate system establishing method, automatic tooth arrangement method and tooth movement evaluation method |
| CN115040275A (en) * | 2022-04-18 | 2022-09-13 | 哈尔滨理工大学 | Orthodontic arch wire evaluation method based on space translation sub-coordinate system trigram limit judgment |
| CN115040275B (en) * | 2022-04-18 | 2023-06-20 | 哈尔滨理工大学 | Orthodontic archwire evaluation method based on space translation sub-coordinate system trigrams judgment |
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