阅读说明：本技术 基于3d打印数字化模型的纯钛钢托支架 (Pure titanium steel holds in palm support based on 3D prints digital model ) 是由 彭金东 刘程 苏来青 刘剑聪 于 2021-02-02 设计创作，主要内容包括：本申请旨在提供基于3D打印数字化模型的纯钛钢托支架,其包括基托、固位体、粘结部和卡环,固位体和粘结部设置在基托上,卡环连接在固位体和粘结部之间,固位体至少有四个且连续排列,若干固位体与粘结部之间均固定连接有连接件,连接件朝上的部分呈螺旋状。解决了当需要修复的牙齿数量较多且位置相邻时,纯钛钢托支架的固位体与口腔的连接关系较差,影响咀嚼的问题,本申请具有增强纯钛钢托支架固位体与粘结部连接强度的效果,使得固位体与粘结部的连接更紧密,有利于患者的咀嚼,也增加了连接件的整体抗压强度和抗变形能力,使得纯钛钢托支架的整体强度得到进一步加强,抗拉强度更好,更耐用。(The application aims at providing pure titanium steel support based on 3D prints digital model, and it includes base support, retainer, bonding portion and snap ring, and retainer and bonding portion set up on the base support, and the snap ring is connected between retainer and bonding portion, and the retainer has four and continuous arrangement at least, and equal fixedly connected with connecting piece between a plurality of retainers and the bonding portion, connecting piece part up are the heliciform. The problem of when needs prosthetic tooth quantity is more and the position is adjacent is solved, the retainer of pure titanium steel support is relatively poor with the relation of being connected in oral cavity, influence the problem of chewing, this application has the effect that pure titanium steel support retainer and bonding portion joint strength are strengthened, make the retainer inseparabler with being connected of bonding portion, be favorable to patient's chewing, the whole compressive strength and the anti deformability of connecting piece have also been increased, make the whole intensity of pure titanium steel support obtain further enhancement, tensile strength is better, and is more durable.)

1. Pure titanium steel support based on 3D prints digital model, including base (1), retainer (2), bonding portion (3) and snap ring (4), retainer (2) with bonding portion (3) set up on base (1), snap ring (4) are connected retainer (2) with bond between (3), its characterized in that, retainer (2) have four and continuous arrangement at least, and are a plurality of retainer (2) with equal fixedly connected with connecting piece (5) between bonding portion (3), connecting piece (5) part up is the heliciform.

2. The pure titanium steel bracket based on the 3D printing digital model as claimed in claim 1, characterized in that a plurality of said connecting pieces (5) are arranged in a grid shape.

3. Pure titanium steel bracket according to claim 1, characterized in that the ends of the connecting piece (5) completely cover the side of the retainer (2) facing the inside of the patient's mouth.

4. The pure titanium steel bracket based on 3D printing digital model according to claim 1 is characterized in that the bottom of the retainer (2) is fixed with a connecting rod (6) which is vertically arranged.

5. The pure titanium steel bracket based on the 3D printing digital model according to claim 1, wherein the retainers (2) are all provided with fixing grooves (7) for installing the denture, and the fixing grooves (7) are designed by simulating the contour of the denture to be installed according to the tooth information of the patient through the 3D printing digital model for matching and are printed after the test is passed.

6. The pure titanium steel bracket based on the 3D printing digital model according to claim 5 is characterized in that the fixing grooves (7) are fixed with vertically arranged reinforcing rods (8).

7. The pure titanium steel bracket based on 3D printing digital model according to claim 1, characterized in that the number of the snap rings (4) connected between the retainer (2) and the bonding part (3) is at least two.

8. The pure titanium steel bracket based on the 3D printing digital model is characterized in that the bottom surface of the connecting piece (5) is flattened and is imprinted with lines (9) which are matched with the oral cavity.

Technical Field

The application relates to the technical field of oral cavities, in particular to a pure titanium steel support bracket based on a 3D printing digital model.

Background

The steel bracket uses the residual natural teeth, mucous membrane and bone tissue under the base as supports, the position of the false tooth is fixed by the retainer and the snap ring, the shape and function of the lost tooth are recovered by the artificial tooth, the shape of the defective alveolar ridge, the jaw bone and soft tissue around the jaw bone are recovered by the base material, and the steel bracket is a prosthesis which can be taken off and worn by a patient.

Pure titanium has the advantages of high strength, low density, high hardness, high melting point, strong corrosion resistance, good plasticity and the like. The pure titanium has no phenomena of sensitization, carcinogenesis, distortion and the like after contacting with a human body, can be well combined with bone tissues, epithelia, connective tissues and the like, and has excellent biocompatibility. Therefore, the pure titanium steel bracket is widely applied to the field of manufacturing of the oral denture.

When the number of teeth needing to be repaired is large and the positions are adjacent, the number of the retainer bodies is correspondingly increased and continuously arranged, so that the retainer bodies are fixed only through the clamping rings and the bonding parts at the two ends, and a patient easily loosens the pure titanium steel support bracket when chewing to influence chewing.

In view of the above-mentioned related arts, the applicant believes that there is a defect that when the number of teeth to be restored is large and the teeth are adjacent to each other, the connection relationship between the retainer and the bonding portion of the pure titanium steel bracket is poor, which affects mastication.

Disclosure of Invention

In order to strengthen pure titanium steel support retainer and the joint strength who bonds, this application provides pure titanium steel support based on 3D prints digital model.

The above application purpose of the present application is achieved by the following technical solutions:

pure titanium steel support based on 3D prints digital model, including base support, retainer, bonding portion and snap ring, the retainer with bonding portion sets up on the base support, the snap ring is connected the retainer with bond between the portion, its characterized in that, the retainer has four and continuous arrangement at least, and is a plurality of the retainer with equal fixedly connected with connecting piece between the bonding portion, connecting piece part up is the heliciform.

By adopting the technical scheme, the retainer and the bonding part are used for fixing the position of the denture, and the pure titanium steel bracket is fixedly arranged in the oral cavity of a patient by taking the connection between mucous membrane and bone tissue under the base and the natural tooth as a support; the plurality of retainers are fixedly connected with the bonding part through the connecting piece, and the upward part of the connecting piece is spiral, so that the connecting strength of the retainers and the bonding part of the pure titanium steel support bracket is enhanced, the retainers and the bonding part of the pure titanium steel support bracket are more tightly connected, chewing of a patient is facilitated, the integral compression strength and the deformation resistance of the connecting piece are also increased, the integral strength of the pure titanium steel support bracket is further enhanced, the tensile strength is better, and the pure titanium steel support bracket is more durable; the pure titanium steel support bracket based on the 3D printing digital model realizes a complex structure, and the retainer is more tightly connected with the bonding part; the precision is higher, and the oral cavity of a patient can be better matched; meanwhile, the material consumption is accurate, the material is saved, and the utilization rate of the material is improved.

The present application may be further configured in a preferred example to: and the connecting pieces are arranged in a penetrating manner and are in a grid shape.

Through adopting above-mentioned technical scheme, the connecting piece interlude sets up and is latticed to strengthen the connection between the adjacent connecting piece, the connecting piece is inseparabler and more firm in connection each other, and the tensile strength of connecting piece is better, makes the bulk strength that pure titanium steel held in the palm the support obtain further strengthening.

The present application may be further configured in a preferred example to: the end of the connector completely covers the side of the retainer facing the inside of the patient's mouth.

Through adopting above-mentioned technical scheme, the tip of connecting piece covers the one side of orientation patient oral cavity inside at the retainer completely to increase the area of being connected between connecting piece and the retainer, make the connection between connecting piece and the retainer more firm.

The present application may be further configured in a preferred example to: and the bottom of each retainer is fixedly provided with a vertically arranged connecting rod.

Through adopting above-mentioned technical scheme, the connecting rod of the fixed vertical setting in retainer bottom has further strengthened being connected between pure titanium steel support and the oral cavity for steel support and the oral cavity between be connected more firmly.

The present application may be further configured in a preferred example to: the fixing bodies are all provided with fixing grooves for installing the false teeth, and the fixing grooves are designed in a matching mode through a 3D printing digital model according to the outline of the false teeth to be installed and simulated according to the tooth information of the patient, and are printed after the test is passed.

Through adopting above-mentioned technical scheme, 3D prints digital model and waits to install the profile of artificial tooth according to patient's tooth information simulation, carries out the matching design of fixed slot to print out with the help of 3D prints digital model after the test passes through, the precision is higher, makes more to match between artificial tooth and the fixed slot.

The present application may be further configured in a preferred example to: and vertically arranged reinforcing rods are fixed in the fixing grooves.

Through adopting above-mentioned technical scheme, the stiffener of vertical setting in the fixed slot plays the effect of strengthening joint strength between artificial tooth and the fixed slot for be connected between fixed slot and the stiffener more firm, be favorable to making artificial tooth install in the fixed slot more firmly.

The present application may be further configured in a preferred example to: the number of the snap rings connected between the retainer and the bonding portion is at least two.

Through adopting above-mentioned technical scheme, the snap ring quantity of connecting between retainer and bonding portion has two at least to support with the help of natural tooth better, pure titanium steel holds in the palm the support and can install in patient's oral cavity more firmly.

The present application may be further configured in a preferred example to: the bottom surface of the connecting piece is flattened and is printed with grains matched with the oral cavity.

Through adopting above-mentioned technical scheme, the bottom surface of connecting piece is cut off the paper-back and is carved with the line that agrees with the oral cavity on it to avoid allowancing patient's oral cavity, simultaneously, the line agrees with the oral cavity, makes the foreign matter sense of patient after wearing reduce, has improved the experience sense that the patient wore pure titanium steel and holds in the palm the support.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the pure titanium steel support bracket based on the 3D printing digital model enhances the connection strength of the retainer and the bonding part, and the retainer and the bonding part are connected more tightly, so that the chewing of a patient is facilitated; the pure titanium steel support bracket based on the 3D printing digital model realizes a complex structure, the connection between the retainer and the bonding part is tighter, the precision is higher, and the pure titanium steel support bracket can be better matched with the oral cavity of a patient; meanwhile, the material consumption is accurate, the material is saved, and the utilization rate of the material is improved;

2. the connecting pieces are arranged in a penetrating manner and are in a grid shape, so that the overall strength of the pure titanium steel bracket is further enhanced;

3. the end part of the connecting piece completely covers the side of the retainer facing the inside of the oral cavity of the patient, so that the connection between the connecting piece and the retainer is more stable;

4. the connecting rod which is vertically arranged and fixed at the bottom of the retainer further strengthens the connection between the pure titanium steel support bracket and the oral cavity, so that the connection between the steel support bracket and the oral cavity is more stable;

the 3D printing digital model simulates the contour of the false tooth to be installed according to the tooth information of the patient, the matching design of the fixing groove is carried out, and the false tooth is printed out by means of the 3D printing digital model after the test is passed, so that the precision is higher, and the false tooth is matched with the fixing groove better;

6. the reinforcing rod vertically arranged in the fixing groove plays a role in reinforcing the connection strength between the denture and the fixing groove, and is beneficial to enabling the denture to be more firmly arranged in the fixing groove;

7. the number of the snap rings connected between the retainer and the bonding part is at least two, so that the support can be better supported by means of natural teeth, and the pure titanium steel bracket can be more stably arranged in the oral cavity of a patient;

8. the bottom surface of the connecting piece is flattened and is imprinted with grains matched with the oral cavity, so that the experience of wearing the pure titanium steel support bracket by a patient is improved.

Drawings

Fig. 1 is a schematic overall structure diagram of a pure titanium steel bracket based on a 3D printing digital model according to an embodiment of the present application.

Fig. 2 is a back view of a pure titanium steel bracket based on a 3D printing digital model according to an embodiment of the present application.

Fig. 3 is a schematic production flow diagram of a pure titanium steel bracket based on a 3D printing digital model according to an embodiment of the present application.

Description of reference numerals: 1. a base support; 2. a retainer; 3. a bonding portion; 4. a snap ring; 5. a connecting member; 6. a connecting rod; 7. fixing grooves; 8. a reinforcing bar; 9. lines; 10. a first through groove; 11. a second through slot.

Detailed Description

The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all 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 application.

In addition, the term "and/or" herein is only one kind of association relationship describing an associated object, and means that there may be three kinds of relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship, unless otherwise specified.

The embodiments of the present application will be described in further detail with reference to the drawings attached hereto.

Referring to fig. 1, this application embodiment provides a pure titanium steel support based on 3D prints digital model, and the material that the steel held in the palm the support is pure titanium, and the steel holds in the palm the support and includes base 1, and the upper surface of base 1 all is fixed with bonding portion 3 in the position that corresponds the oral cavity both sides, has all seted up a plurality of second through-grooves 11 on bonding portion 3, and a plurality of second through-grooves 11 evenly distributed are on bonding portion 3, and the notch that the second led to groove 11 runs through to base 1 bottom surface along vertical direction. By placing an adhesive in the second through-groove 11, the denture is fixed to the adhesive portion 3.

The upper surface of the base 1 is fixed with the retainers 2 along the oral cavity edge between the two bonding portions 3, and the retainers 2 are arranged in series of at least four retainers 2.

All offer the fixed slot 7 that is used for installing the artificial tooth on the retainer 2, the notch of fixed slot 7 upwards offers, and fixed slot 7 prints digital model through 3D and waits to install the profile of artificial tooth and match the design and print out after the test passes through according to patient's tooth information simulation. The fixing groove 7 is matched with the false tooth to be installed in a clamping mode.

The center of the inner bottom wall of the fixing groove 7 is provided with a first through groove 10, and the notch of the first through groove 10 penetrates to the bottom surface of the base 1 along the vertical direction. The denture is fixed in the fixing groove 7 by placing the adhesive in the first through groove 10.

Still be fixed with the stiffener 8 of vertical setting in the fixed slot 7, the setting of staggering of stiffener 8 and first logical groove 10, the stiffener 8 is located the first axis that leads to groove 10, and the stiffener 8 plays the effect of being connected between reinforcing false tooth and the fixed slot 7, is favorable to the artificial tooth to install more firmly in fixed slot 7. The reinforcing rod 8 is in a round table shape with a thick upper part and a narrow lower part so as to increase the connection area between the pure titanium steel bracket and the false tooth and ensure that the pure titanium steel bracket is more stably connected.

The retainer 2 and the bonding part 3 at two ends are connected with snap rings 4, and the number of the snap rings 4 is at least two. In this embodiment, the number of the snap rings 4 may be two. The clamping ring 4 is used for being clamped on natural teeth around the false tooth to be installed so as to fix the position of the pure titanium steel bracket.

A connecting piece 5 is fixedly connected between each retainer 2 and each bonding part 3, the upward part of each connecting piece 5 is spiral, the connecting strength of the retainer 2 and each bonding part 3 of the pure titanium steel support bracket is enhanced, the connection of the retainer 2 and each bonding part 3 is tighter, and further, the connection of the retainer 2 and the oral cavity is tighter, which is beneficial to the chewing of a patient; the overall compressive strength and the deformation resistance of the connecting piece 5 are also improved, so that the overall strength of the pure titanium steel bracket is further enhanced, the tensile strength is better, and the pure titanium steel bracket is more durable.

It sets up and is latticedly to alternate between a plurality of connecting pieces 5, alternates between a plurality of connecting pieces 5 to set up and make connecting pieces 5 connection each other inseparabler, and simultaneously, the connection between a plurality of connecting pieces 5 is latticed for connecting pieces 5 connection each other is more firm, and connecting pieces 5's tensile strength is better. In this embodiment, the four connecting members 5 are arranged in a grid-like manner in a parallel manner.

The end of the connecting piece 5 completely covers the side of the retainer 2 facing the inside of the mouth of the patient to increase the connecting area between the connecting piece 5 and the retainer 2, so that the connection between the connecting piece 5 and the retainer 2 is more stable.

Referring to fig. 2, the bottom surface of the connecting piece 5 is flattened and is imprinted with the lines 9 which are fit with the oral cavity, so that the pure titanium steel bracket is more suitable for the oral environment when being worn in the oral cavity of a patient, and the adverse reaction caused by inadaptability is reduced. The bottom surface of the connecting piece 5 is designed according to the actual condition of the oral cavity of the patient, so that the bottom surface of the connecting piece 5 is fit and matched with the interior of the oral cavity of the patient.

The bottom of retainer 2 all is fixed with the connecting rod 6 of vertical setting, and connecting rod 6 staggers the setting with first logical groove 10, and connecting rod 6 is located first axis that leads to groove 10, and connecting rod 6 plays the effect of strengthening being connected between pure titanium steel support and the oral cavity, is favorable to pure titanium steel support more firmly to be installed in the patient oral cavity. The connecting rod 6 is in a round table shape with a thick upper part and a narrow lower part so as to increase the connecting area between the connecting rod and the oral cavity and ensure that the pure titanium steel support bracket is more stably connected.

Referring to fig. 3, the steps of the production process of the pure titanium steel bracket based on the 3D printing digital model are specifically as follows.

Step S1: and (5) checking the denture model to be manufactured. The edges of the silica gel impression and the plaster model are checked to see whether the model is intact or not, whether the accessories are complete or not, whether the occlusion space is enough, whether a good common in-place channel exists or not and the like. Ensuring the edges of the silica gel impression and the plaster model are clear. And repairing or replacing the silica gel impression with fuzzy edges and the plaster model to ensure that the model meets the manufacturing requirements.

Step S2: and (5) preparing the denture model to be prepared. The silica gel tray is cleaned by water and dried by an air gun, gypsum is well mixed by a vacuum mixer, the gypsum is poured into the tray, bubbles in the tray are removed by a vibration machine, the bubbles in the gypsum are completely discharged, after 30 minutes, the gypsum is completely solidified, and the bottom of the gypsum model is flattened by a gypsum trimming machine.

Step S3: and scanning the denture model to be manufactured. After the upper and lower parts are fixed by wax and occluded, the model is put into a 3shape scanning cabin, a replaced and sterilized scanning head of a scanner is used, and then a scanning program is started to enable the scanning head to scan the model.

Step S4: and establishing a 3D printing digital model for bracket design. The designer uses the CCD camera to obtain the image data of each angle and section of the denture model to be manufactured according to the design requirement information, the image data is used as the image data of modeling, and the obtained image data is subjected to binary segmentation processing.

The binary segmentation processing comprises setting a threshold condition of image gray to distinguish the gray gradient of the image and realize the binary segmentation processing of the image, so that the image boundary contour subjected to the binary segmentation processing is clearer.

And then recording the binary segmentation image into a microscopic digital imaging system, and converting the binary segmentation image into an STL denture three-dimensional model format based on a medical three-dimensional graph modeling system.

And finally, inputting the oral cavity scanning data of the denture model to be manufactured, the design drawing and observation line conditions provided by a doctor and the denture three-dimensional model format of the binary segmentation image into modeling software, and establishing the denture three-dimensional model. The modeling software may be CopyCAD or PowerSHAPE of Delcam International.

The denture three-dimensional model can design a pure titanium steel support bracket strictly according to oral cavity scanning data, design drawings and observation line conditions provided by doctors and binary segmentation images, bonding parts 3 are designed on the upper surface of the base 1 at positions corresponding to two sides of an oral cavity, and a plurality of second through grooves 11 are designed on the bonding parts 3; four fixing bodies 2 which are continuously arranged are arranged on the base 1 between the two bonding parts 3 along the edge of the oral cavity; two snap rings 4 matched with two continuous natural teeth adjacent to the denture model to be manufactured are designed between the retainer 2 and the bonding part 3 which are positioned at the two ends; fixing bodies 2 are respectively provided with a fixing groove 7 used for being matched with a denture model to be manufactured, a first through groove 10 is designed at the center of the inner bottom wall of each fixing groove 7, reinforcing rods 8 which are vertically arranged are designed in the fixing grooves 7, the reinforcing rods 8 are arranged in a staggered mode with the first through grooves 10, the reinforcing rods 8 are located on the axis of the first through grooves 10, the bottom of each fixing body 2 is respectively provided with a connecting rod 6 which is vertically arranged, the connecting rods 6 are arranged in a staggered mode with the first through grooves 10, and the connecting rods 6 are located on the axis of the first through grooves 10; connecting pieces 5 are designed between the four retainers 2 and the bonding parts 3, the upward parts of the four connecting pieces 5 are spiral, the four connecting pieces 5 are arranged in a penetrating way and are in a grid shape, the end parts of the connecting pieces 5 completely cover the surface of the retainers 2 facing the inside of the oral cavity of the patient, the bottom surfaces of the connecting pieces 5 are in a planar design, and grains 9 matched with the oral cavity are designed on the bottom surfaces of the connecting pieces 5; the position of the clamping ring is reasonably designed; the design line of the bracket is smooth, light and beautiful; the thickness of the bracket meets the standard requirements, so that the thickness of the full support is more than or equal to 0.5mm, the thickness of the tongue palate rod is more than or equal to 1.0mm, the thickness of the tongue plate is 0.8-1.0 mm, and the thickness of the tongue rod is more than or equal to 1.8 mm.

Based on the oral scanning data, a design drawing provided by a doctor, an observation line condition and a binary segmentation image, the denture three-dimensional model generates 3D printing data and uploads the data to a 3D printing center.

When the established denture three-dimensional model needs to be modified, the denture three-dimensional model is subjected to parameter input and modification based on the 3D tactile design system, and the design and modification of the denture three-dimensional model are realized.

Step S5: and printing the pure titanium steel bracket. The 3D printing center personnel are to the support composing of design, ensure that the angle is reasonable and do not have the deformation, put into the printing storehouse to print printing material titanium powder again after wearing gloves, avoid printing material and naked light or with the condition of other high temperature material contact.

Step S6: and (5) post-treating the pure titanium steel bracket. And releasing sintering stress after printing is finished. The sintering temperature is controlled to be about 830 ℃. And after cooling, removing an oxide layer on the surface of the casting by using a sand blasting machine, removing a supporting rod of the connecting support, then polishing the surface of the casting and the redundant part of the snap ring 4 by using a machine needle or a grinding head, measuring the thickness of the base 1 by using a caliper, completely putting the tried casting on the plaster model base tooth, then primarily polishing the base 1 and the snap ring 4 by using a polishing wheel and a polishing rod, and finally polishing by using polishing paste dipped in a polishing cloth wheel to finish the manufacture of the pure titanium steel support based on the 3D printed digital model.

The beneficial effects of this embodiment are as follows:

1. the spiral connecting piece 5 arranged at the upper part of the pure titanium steel support bracket based on the 3D printing digital model enhances the connection strength of the retainer 2 and the bonding part 3 of the pure titanium steel support bracket, the retainer 2 and the bonding part 3 are more tightly connected, the chewing of a patient is facilitated, and the overall compression strength and the deformation resistance of the connecting piece 5 are also increased, so that the overall strength of the pure titanium steel support bracket is further enhanced, the tensile strength is better, and the pure titanium steel support bracket is more durable;

2. the connecting pieces 5 are arranged in a penetrating manner and are in a grid shape, so that the connecting pieces 5 are connected more tightly and more stably, and the overall strength of the pure titanium steel support bracket is further enhanced;

3. the end of the connecting piece 5 completely covers the side of the retainer 2 facing the inside of the mouth of the patient, so that the connection between the connecting piece 5 and the retainer 2 is more stable;

4. the connecting rod 6 which is vertically arranged and fixed at the bottom of the retainer 2 further strengthens the connection between the pure titanium steel support bracket and the oral cavity, so that the connection between the steel support bracket and the oral cavity is more stable;

5. the reinforcing rod 8 vertically arranged in the fixing groove 7 strengthens the connection strength between the false tooth and the fixing groove 7, so that the connection between the fixing groove 7 and the reinforcing rod 8 is more stable;

6. at least two snap rings 4 are connected between the retainer 2 and the bonding part 3 to better support by means of natural teeth, and the pure titanium steel bracket can be more stably arranged in the oral cavity of a patient;

7. the bottom surface of the connecting piece 5 is flattened and is printed with the lines 9 which are fit with the oral cavity, so as to avoid hurting the oral cavity of a patient, and meanwhile, the lines 9 are fit with the oral cavity, so that the foreign body sensation after the patient wears the connecting piece is reduced, and the experience of the patient wearing the pure titanium steel support bracket is improved;

8. based on the 3D printing digital model, the pure titanium steel support bracket can realize a complex structure, the connection strength of the retainer 2 and the bonding part 3 is enhanced, the precision is high, and the pure titanium steel support bracket can be better matched with the oral cavity of a patient; meanwhile, the material consumption is accurate, the material is saved, and the utilization rate of the material is improved.