阅读说明：本技术 一种定制式自锁托槽矫治器及制作方法 (Customized self-ligating bracket appliance and manufacturing method thereof ) 是由 叶年嵩 赵民 季洁 李超 李欢欢 朱成勇 谢贞艳 孙可心 于 2021-05-26 设计创作，主要内容包括：本发明公开了一种定制式自锁托槽矫治器及制作方法,其制作方法包括S1,获取患者数字化牙列数据,获取患者牙齿的STL模型；S2,在计算机中使用绘图软件将牙列模型分割成单颗牙齿,标注每颗牙齿的临床冠中心点并设定临床冠长轴,依据医生的要求及患者牙槽基骨和牙列的实际情况进行数字化排牙模拟,定制式自锁托槽矫治器包括多个由弓丝串联起来的托槽和颊面管,所述托槽包括自锁托槽体、托槽连接体以及托槽底板,所述颊面管包括颊面管体、颊面管连接体以及颊面管底板,所述自锁托槽体和颊面管体均为预制成品,所述自锁托槽体的上、下端分别固定有两个两个托槽翼。本发明,根据客户牙齿形态精准的定制,因此使用过程中不会存在差异,从而实现精准正畸治疗。(The invention discloses a custom self-ligating bracket appliance and a manufacturing method thereof, wherein the manufacturing method comprises the steps of S1, acquiring digital dentition data of a patient, and acquiring an STL model of teeth of the patient; s2, dividing the dentition model into single teeth by using drawing software in a computer, marking the clinical crown central point of each tooth and setting a clinical crown long axis, carrying out digital tooth arrangement simulation according to the requirements of doctors and the actual conditions of the alveolar basal bones and dentitions of patients, wherein the custom self-locking bracket corrector comprises a plurality of brackets and buccal tubes which are connected in series by an arch wire, each buccal tube comprises a self-locking bracket groove body, a bracket connector and a bracket bottom plate, each buccal tube comprises a buccal tube body, a buccal tube connector and a buccal tube bottom plate, the self-locking bracket groove body and the buccal tube body are both prefabricated products, and two bracket wings are respectively fixed at the upper end and the lower end of the self-locking bracket groove body. According to the invention, the tooth is precisely customized according to the tooth form of a customer, so that no difference exists in the using process, and the precise orthodontic treatment is realized.)

1. A manufacturing method of a customized self-ligating bracket appliance is characterized by comprising the following steps: the method comprises the following steps:

s1, acquiring digital dentition data of the patient and acquiring an STL model of the teeth of the patient;

s2, dividing the dentition model into single teeth by using drawing software in a computer, marking the central point of a clinical crown of each tooth, setting a long axis of the clinical crown, and performing digital tooth arrangement simulation according to the requirements of doctors and the actual conditions of the alveolar bone and dentition of patients;

s3, in drawing software, placing a bracket body and a connector of a tooth position, a buccal tube body (4) and a CAD model of a buccal tube connector (5) at the middle position of a tooth labial surface along the track and the plane of an arch wire (8) according to the tooth position, adjusting the bending degree of the arch wire (8) to make a bracket connector (2) and the buccal tube connector (5) thinner, performing Boolean operation on the bracket connector (2) or the buccal tube connector (5) and the corresponding tooth surface to form a customized connector, and designing a customized bracket bottom plate (3) according to the intersection range of the connector (5) and the tooth labial surface;

the second sequence of the arch wire can be adjusted according to the height of the dental crown and the occlusal curve in the drawing software, a step (10-1) can be designed in the back tooth and the front tooth through the drawing software, the interference between a bracket and a gum is avoided, the normal spee curve is within 2mm, for a patient with the thickness of more than 2mm, the molar is deviated to the gum direction, the molar cannot be bonded with the bracket when the horizontal arch wire is used, and in the face of the condition, the step between the back teeth can be designed in the drawing software, so that the problem that the molar cannot be bonded can be avoided;

s4, combining the customized connecting body in the step S3 with a customized bracket bottom plate (3) corresponding to the tooth surface of the tooth to form a connecting body and bottom plate composite body, and outputting the composite body in an STL format; manufacturing a connecting body and a bottom plate complex;

s5, aligning and combining the bracket body and the connector-bottom plate complex through a positioning pile D, temporarily fixing the bracket body and the connector-bottom plate complex through resin wax, embedding the bracket body into a bracket body fixing groove C of a welding fixture block A, combining another welding fixture block B with the welding fixture block A, enabling a spring needle in the welding fixture block B to abut against the bracket bottom plate to avoid loosening, manufacturing a customized self-locking bracket through laser welding the bracket body and the connector-bottom plate complex, and manufacturing the customized buccal tube through laser welding the connector-bottom plate complex with a buccal tube body (4) through a similar special fixture.

2. The method for manufacturing a custom self-ligating bracket appliance of claim 1, wherein the method comprises the following steps: the STL model of the patient 'S teeth is obtained in step S1 by scanning a dental cast or tray with a laser, or by scanning the patient' S teeth directly intraorally.

3. The method for manufacturing a custom self-ligating bracket appliance of claim 1, wherein the method comprises the following steps: the drawing software is CAD software.

4. The method for manufacturing a custom self-ligating bracket appliance of claim 1, wherein the method comprises the following steps: the joint and the bottom plate composite in step S4 may be directly manufactured by 3D printing of metal, may be manufactured by 3D printing of a resin mold and then embedding casting, or may be formed by numerical control machining.

5. The method for manufacturing a custom self-ligating bracket appliance of claim 3, wherein: the CAD software is TiTok tooth arrangement software.

6. The method for manufacturing a custom self-ligating bracket appliance of claim 4, wherein: the precision of the 3D printing resin model is 10-50 mu m.

7. The method for manufacturing a custom self-ligating bracket appliance of claim 1, wherein the method comprises the following steps: the thickness of the bracket bottom plate (3) in the step S3 is 0.2-0.7 mm.

8. A custom self-ligating bracket appliance is characterized in that: the self-locking bracket comprises a plurality of brackets and buccal tubes which are connected in series by an arch wire (8), wherein each bracket comprises a self-locking bracket groove body (1), a bracket connecting body (2) and a bracket bottom plate (3), each buccal tube comprises a buccal tube body (4), a buccal tube connecting body (5) and a buccal tube bottom plate (6), the self-locking bracket groove body (1) and the buccal tube body (4) are both prefabricated products, the upper end and the lower end of the self-locking bracket groove body (1) are respectively fixed with two bracket wings (1-1), the middle part of the self-locking bracket groove body (1) is provided with a switchable lock cover structure (1-2), the middle part of the self-locking bracket groove body (1) is also provided with a bracket groove (1-3) for the arch wire (8) to pass through, the middle part of the buccal tube body (4) is provided with a rectangular tube cavity structure (4-1) for the arch wire (8) to pass through, a traction hook (2-2) is arranged in the direction close to the gum of the tooth, and the bracket connecting body (2) is a connecting body for connecting the finished bracket body and the customized bottom plate.

9. The custom self-ligating bracket appliance of claim 8, wherein: the self-locking bracket groove body (1) is a standard part, the self-locking bracket groove body (1) can select bracket groove bodies with different widths according to the widths of different tooth positions, the width range of the bracket groove bodies is 2.0-5.0mm, the buccal tube body (4) is a standard part, the buccal tube body (4) can select bracket groove bodies with different widths according to the widths of different tooth positions, and the width range of the bracket groove bodies is 2.0-5.0 mm.

10. The custom self-ligating bracket appliance of claim 8, wherein: the bracket bottom plate (3) and the buccal tube bottom plate (6) can be in a full crown shape, a ring shape, a half crown shape, a rectangular veneering shape, a rounded rectangular veneering shape, a trapezoidal veneering shape, a circular veneering shape and an oval veneering shape.

Technical Field

The invention relates to the technical field of orthodontic bracket manufacturing, in particular to a self-locking bracket appliance with a certain standard and a manufacturing method thereof.

Background

The incidence rate of malocclusion deformity reaches 70% due to the influence of genetic factors or environmental factors, which has certain influence on the beauty, function and psychology of the patient. In treating the ware of rescuing wrong occlusal deformity, on traditional straight wire bracket rescues the ware, the data in each support groove is according to the average data design preparation of crowd's tooth to rely on doctor's experience, directly bond the arch wire of being located the tooth face and cooperating general form through the naked eye and correct. Because the tooth form of each person has some differences, and the form of the tooth base bone is different, the traditional bracket appliance and the arch wire have larger errors in the treatment process. Therefore, a custom self-ligating bracket appliance "measuring teeth custom" for each patient is needed to achieve accurate orthodontic treatment.

Disclosure of Invention

The invention aims to provide a self-ligating bracket appliance with a certain system and a manufacturing method thereof, and aims to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a certain standard self-ligating bracket appliance and a manufacturing method thereof comprise the following steps:

s1, acquiring digital dentition data of the patient and acquiring an STL model of the teeth of the patient;

s2, dividing the dentition model into single teeth by using drawing software in a computer, marking the central point of a clinical crown of each tooth, setting a long axis of the clinical crown, and performing digital tooth arrangement simulation according to the requirements of doctors and the actual conditions of the alveolar bone and dentition of patients;

s3, in drawing software, placing a bracket body and a connector of the tooth position, a buccal tube body and a CAD model of a buccal tube connector of the tooth position to the middle position of the labial surface of the tooth along an arch wire track and a plane according to the tooth position, adjusting the bending degree of the arch wire to enable the bracket connector and the buccal tube connector to be thinner, performing Boolean operation on the bracket connector or the buccal tube connector and the corresponding tooth surface to form a customized connector, and designing a customized bracket bottom plate according to the intersection range of the connector and the labial surface of the tooth;

the second sequence of the arch wire can be adjusted according to the height of the dental crown and the occlusal curve in the drawing software, a step can be designed in the back tooth and the front tooth through the drawing software, the interference between a bracket and a gum is avoided, the normal space curve is within 2mm, for a patient with the thickness of more than 2mm, the molar is deviated to the gum direction, the bracket cannot be bonded by the molar when the horizontal arch wire is used, and in the face of the condition, the step between the back teeth can be designed in the drawing software, so that the problem that the molar cannot be bonded can be avoided;

s4, combining the customized connecting body in the step S3 with a customized bracket bottom plate (3) corresponding to the tooth surface of the tooth to form a connecting body and bottom plate composite body, and outputting the composite body in an STL format; manufacturing a connecting body and a bottom plate complex;

s5, aligning and combining the bracket body and the connector-bottom plate complex through a positioning pile D, temporarily fixing the bracket body and the connector-bottom plate complex through resin wax, embedding the bracket body into a bracket body fixing groove C of a welding fixture block A, combining another welding fixture block B with the welding fixture block A, enabling a spring needle in the welding fixture block B to abut against the bracket bottom plate to avoid loosening, manufacturing a customized self-locking bracket through laser welding the bracket body and the connector-bottom plate complex, and manufacturing the customized buccal tube through laser welding the connector-bottom plate complex with a buccal tube body (4) through a similar special fixture.

Preferably, the STL model of the patient 'S teeth is obtained in step S1 by scanning a dental cast or tray with a laser, or by intraorally scanning the patient' S teeth directly.

Preferably, the drawing software is CAD software.

Preferably, the junction body and the bottom plate composite in step S4 are directly manufactured by metal 3D printing, or may be manufactured by 3D printing into a resin mold and then embedding casting, or may be formed by numerical control machining.

Preferably, the CAD software is TiTok tooth arrangement software.

Preferably, the 3D printed resin model is made with an accuracy of 10-50 μm.

Preferably, the thickness of the bracket bottom plate (3) in the step S3 is 0.2-0.7 mm.

The utility model provides a customization formula self-ligating bracket unscrambler, includes a plurality of support groove and buccal surface pipe that are established ties by the arch wire, hold in the palm the groove and include self-ligating bracket cell body, hold in the palm groove connector and hold in the palm the groove bottom plate, buccal surface pipe includes buccal surface body, buccal surface union coupling body and buccal surface union bottom plate, self-ligating bracket cell body and buccal surface body are finished product in advance, the upper and lower extreme of self-ligating bracket cell body is fixed with two bracket wing respectively, self-ligating bracket cell body middle part is equipped with a switchable locking closure structure, self-ligating bracket cell body middle part still is equipped with the support groove that supplies the arch wire to pass, the middle part of buccal surface body has the lumen structure that a rectangle can supply the arch wire to pass, and the gum direction that is close to the tooth is set for having a traction hook, hold in the support groove coupling body is the connector of connecting finished product bracket cell body and customization bottom plate.

Preferably, the self-locking bracket groove body is a standard part, the bracket groove body with different widths can be selected according to the widths of different tooth positions, the width range of the bracket groove body is 2.0-5.0mm, the buccal tube body is a standard part, the bracket groove body with different widths can be selected according to the widths of different tooth positions, and the width range of the bracket groove body is 2.0-5.0 mm.

Preferably, the bracket bottom plate and the buccal tube bottom plate can be in a full crown shape, a ring shape, a half crown shape, a rectangular veneering shape, a rounded rectangular veneering shape, a trapezoidal veneering shape, a circular veneering shape and an oval veneering shape.

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, the tooth is precisely customized according to the tooth form of a customer, so that no difference exists in the using process, and the precise orthodontic treatment is well realized.

Drawings

FIG. 1 is a front view of a custom self-ligating bracket appliance of the invention.

FIG. 2 is a side view of a custom self-ligating bracket appliance of the invention.

Figure 3 is a schematic view of an archwire configuration of the present invention.

Fig. 4 is a plan view of a buccal tube base plate of the present invention.

Fig. 5 is a schematic view of the structure of the buccal tube body and the buccal tube coupling body of the present invention.

Fig. 6 is an archwire assembly view of the present invention.

FIG. 7 is a schematic diagram of a customized maxillary digital tooth arrangement self-ligating bracket structure of the present invention.

FIG. 8 is a schematic view of a full-dentition digital-alignment customized self-ligating bracket of the present invention.

Fig. 9 is a schematic view of the structure of the step of the present invention.

Fig. 10 is a schematic view of the connection between the bracket body and the connecting body according to the present invention.

Fig. 11 is a schematic view of the bracket body and the connecting body of the present invention from a rear view.

In the figure: 1. a self-locking bracket body; 1-1, bracket wings; 1-2, a locking cover structure capable of being opened and closed; 1-3, bracket grooves; 2. a bracket connector; 2-2, a traction hook; 3. a bracket base plate; 4. a buccal tube body; 4-1, lumen structure; 5. a buccal tube connector; 6. a buccal tube bottom plate; 7. a single tooth; 8. an arch wire; 9. customizing an arch wire; 10-1 and 10-2 are steps.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-11, the present invention provides a technical solution: a custom self-ligating bracket appliance comprises a plurality of brackets and buccal tubes which are connected in series by an arch wire 8, wherein each bracket comprises a self-ligating bracket body 1, a bracket connector 2 and a bracket bottom plate 3. The buccal tube includes a buccal tube body 4, a buccal tube connector 5, and a buccal tube bottom plate 6. The self-ligating bracket body 1 and the buccal surface tube body 4 are both prefabricated products, and the bracket connector 2, the bracket bottom plate 3, the buccal surface tube connector 5 and the buccal surface tube bottom plate 6 are customized individually. Two bracket wings 1-1 are respectively fixed at the upper end and the lower end of the self-locking bracket body 1, a switchable lock cover structure 1-2 is arranged in the middle of the bracket body, and a bracket groove 1-3 for an arch wire 8 to pass through is also arranged in the middle of the bracket body. The middle part of the buccal tube body 4 is provided with a rectangular tube cavity structure 4-1 for the arch wire 8 to pass through, and a traction hook 2-2 is arranged in the direction close to the gum of the tooth. The bracket connector 2 is a connector for connecting the finished bracket body and the customized bottom plate.

A manufacturing method of a customized self-ligating bracket appliance comprises the following steps:

1. acquiring digital dentition data of a patient: the STL model of the patient's teeth is obtained by laser scanning a dental model or tray, or intraorally directly scanning the patient's teeth.

2. The dentition model is divided into single teeth 7 in a computer by using CAD software, the center point of a clinical crown of each tooth is marked, a long shaft of the clinical crown is set, and digital tooth arrangement simulation is carried out according to the requirements of doctors and the actual conditions of the alveolar bone and the dentition of a patient.

3. In CAD software, according to the tooth position, the bracket body and the connector of the tooth position, the buccal tube body 4 and the CAD model of the buccal tube connector 5 are placed in the middle position of the labial surface of the tooth along the track and the plane of the arch wire 8, the bending degree of the arch wire 8 is adjusted to enable the bracket connector 2 and the buccal tube connector 5 to be thinner, and Boolean operation is carried out on the bracket connector 2 or the buccal tube connector 5 and the corresponding tooth surface to form a customized connector. And designing a customized bracket bottom plate 3 according to the intersection range of the connecting body and the labial surface of the tooth.

The second sequence of archwires may be adjusted within the CAD software based on the height of the crowns and the occlusal curve. For a part of patients with higher front gingiva and lower back gingiva, the arch is placed according to a normal arch plane, and the bracket can interfere with the gingiva. Aiming at the problem, the software can design a step 10-1 between the posterior teeth and the anterior teeth to avoid the interference of the bracket and the gum. The normal sphere curve is within 2mm, and for patients with the diameter of more than 2mm, the molar is deviated to the gum, and the molar can not be bonded with the bracket when a horizontal arch wire is used. In the face of the situation, the step between the back teeth can be designed in the software, so that the problem that the molars cannot be bonded can be avoided.

4. And (3) combining the customized connector in the step (3) with the customized bracket bottom plate (3) corresponding to the tooth surface of the tooth to form a connector-bottom plate composite body, and outputting the composite body in an STL format. The connector-base plate composite can be directly manufactured by metal 3D printing, can also be manufactured by 3D printing into a resin model and then casting, and can also be cut and formed by numerical control machining.

5. And 4, directly manufacturing the connector-bottom plate composite body through metal 3D printing, or printing the composite body into a resin model through 3D printing, then performing embedding casting manufacturing, or performing numerical control machining forming.

6. The bracket body and the connector-bottom plate complex are aligned and combined through a positioning pile D, temporary fixation is carried out through resin wax, then the bracket body is embedded into a bracket body fixing groove C of a welding fixture block A, another welding fixture block B is combined with the welding fixture block A, and a spring needle in the welding fixture block B abuts against the bracket bottom plate to avoid looseness. The bracket body and the connector-bottom plate complex are manufactured into a customized self-locking bracket by laser welding. The connector-base plate composite is laser welded with the buccal tube body 4 by the same special fixture to manufacture the customized buccal tube.

Wherein the content of the first and second substances,

1, the CAD software in the step 2 is TiTok tooth arrangement software; and 4, manufacturing the resin bracket by a resin printer, wherein the input format is an STL format, and the three-dimensional printing precision is 10-50 mu m.

2, the step 1 of obtaining the digital dentition model comprises the following steps: adopting laser scanning or CT to scan a dental model or a tray to obtain a digital dentition model; a digital dentition model is acquired by direct intraoral scanning.

3, in the step 3, the bracket needs to meet two conditions, wherein the groove of the bracket body is placed along the track and the plane of the arch wire 8; the bracket body is positioned in the middle of the side surface of the tooth lip.

4, in the step 3, the thickness of the bottom plate is 0.2-0.7 mm.

5 further, in the CAD software, the CAD models of the bracket connector 2 and the buccal tube connector 5 extend towards the tooth surface to enable the models to be intersected with the tooth surface, then the models are subtracted from the tooth surface by Boolean operation, and the rest connectors positioned on the tooth labial surface are merged with the bottom plate.

Further, in step 5, the casting metal may be cobalt-chromium-molybdenum alloy, titanium alloy, gold alloy or stainless steel material. The 3D metal print may be a cobalt chromium molybdenum alloy, a titanium alloy, a gold alloy, or a stainless steel material. The material for numerical control machining cutting can be cobalt-chromium-molybdenum alloy, titanium alloy, gold alloy or stainless steel material.

7, in the step 6, the self-locking bracket body 1 is a standard part, but the bracket body with different widths can be selected according to the widths of different tooth positions, and the width range of the bracket body is 2.0-5.0 mm. The buccal tube body 4 is a standard part, but the bracket body with different widths can be selected according to the widths of different tooth positions, and the width range of the bracket body is 2.0-5.0 mm.

8 furthermore, in the step 6, a locking cover structure 1-2 which can be opened and closed exists in the self-locking bracket body 1, the arch wire 8 can be put in the opening state, the locking cover can be closed after the arch wire 8 is put in, and the closed locking cover can lock the steel wire in the groove and can not be separated out.

Further, the self-locking bracket body 1 may be used for central incisors, lateral incisors, cuspids, premolars, and molars. The buccal tube 4 may be used for grinding teeth.

10 further, the bracket baseplate 3 and the buccal tube baseplate 6 may be full crown, ring, half crown, rectangular, rounded rectangular, trapezoidal, circular, or oval.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.