CN110464499B - Environment-friendly PRF film pressing guide plate system - Google Patents
Environment-friendly PRF film pressing guide plate system Download PDFInfo
- Publication number
- CN110464499B CN110464499B CN201910767178.1A CN201910767178A CN110464499B CN 110464499 B CN110464499 B CN 110464499B CN 201910767178 A CN201910767178 A CN 201910767178A CN 110464499 B CN110464499 B CN 110464499B
- Authority
- CN
- China
- Prior art keywords
- tooth
- prf
- guide plate
- film
- function
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C13/00—Dental prostheses; Making same
- A61C13/0003—Making bridge-work, inlays, implants or the like
- A61C13/0004—Computer-assisted sizing or machining of dental prostheses
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C13/00—Dental prostheses; Making same
- A61C13/0003—Making bridge-work, inlays, implants or the like
- A61C13/0006—Production methods
- A61C13/0019—Production methods using three dimensional printing
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C13/00—Dental prostheses; Making same
- A61C13/08—Artificial teeth; Making same
- A61C13/087—Artificial resin teeth
Abstract
The invention provides an environment-friendly PRF film pressing guide plate system, which comprises: the 3D printer comprises a first scanning module arranged at one end, a second scanning module arranged at the other end, a first printing module and a second printing module which are arranged at the middle part; the first scanning module scans the cross section or the shape of the tooth missing part of the tooth bone to acquire missing tooth three-dimensional modeling data, stores and expresses the missing tooth three-dimensional modeling function F (a, b, c, d, E), determines a PRF membrane function F (a, b, c, d, E) through calculation after determining the missing tooth three-dimensional modeling function F (a, b, c, d, E), and determines a die pressing guide plate modeling function G through the determination of the missing tooth three-dimensional modeling function F (a, b, c, d, E) and the PRF membrane function F (a, b, c, d, E).
Description
Technical Field
The invention relates to the technical field of PRF material templates, in particular to an environment-friendly PRF film pressing guide plate system.
Background
For a patient with a tooth missing, whether the tooth missing is one, several or the whole dental arch, the dental implant can be used as a main choice for the patient, and the general dental implant operation procedure is a gingival incising operation so as to enable a doctor to see the structure of an alveolar bone, then, a hole is drilled in the alveolar bone of a dental implant part, an implant is implanted into the alveolar bone, then, an abutment and the implant are connected, and finally, a dental prosthesis is connected to the abutment. The decisive factors for the success of the dental implant surgery are: accurate alignment between dental implants and alveolar bone, dental implants and other teeth, and dental implants.
Furthermore, the existing artificial teeth are mainly made of titanium metal, and have the advantages of high mechanical strength, but the titanium-based artificial teeth have the defects of poor biological activity, overhigh elastic modulus, metal ion precipitation and the like, the activity of dental cells is difficult to maintain after the teeth are planted, and with the development of digitization and informatization technologies, a large number of high-tech digital devices, such as radioactive ray CBCT scanning, CT three-dimensional reconstruction, computer virtual planting, oral cavity model scanning, computer aided design/aided manufacturing (CAD/CAM) and other digitization technologies, are gradually popularized in China and in large and medium cities to different degrees in the field of oral dental planting, and the digitization technologies are favorable for improving the efficiency and quality of dental planting.
The prior Chinese patent publication No. CN109203450A discloses a preparation method of a PEEK composite material artificial tooth suitable for 3D printing, which designs the three-dimensional modeling of the artificial tooth through a digital technology, designs the surface of a tooth root below a three-dimensional modeling abutment of the artificial tooth into a net-shaped grooved structure or a honeycomb-shaped hole structure, uses a PEEK composite material containing whiskers as a 3D printing material of the artificial tooth, prints the artificial tooth by a special 3D printer according to the designed modeling data of the artificial tooth, and finally performs surface treatment and coating active bone paste on the artificial tooth, thereby obtaining the PEEK composite material artificial tooth with excellent performance.
However, in the above technical solutions, a 3D printing technology is adopted, but in the planting process, due to the new addition of the composite material, on one hand, the activity of the dental cells is difficult to maintain, and on the other hand, the 3D printer is adopted to print the artificial tooth, and then the artificial tooth is subjected to surface treatment, so that the shape of the artificial tooth is often not matched with the final shape of the dental notch.
Disclosure of Invention
The invention aims to provide an environment-friendly PRF (PRF) film pressing guide plate system to solve the problem that the implant is difficult to form.
In order to achieve the above object, the present invention provides an environment-friendly PRF film pressing guide plate system, comprising: a 3D printer, wherein,
the 3D printer comprises a first scanning module arranged at one end, a second scanning module arranged at the other end, a first printing module and a second printing module which are arranged at the middle part;
the first scanning module scans the section or the shape of the edentulous part of the tooth bone to acquire missing tooth three-dimensional modeling data, stores and expresses missing tooth three-dimensional modeling functions F (a, b, c, d, E), determines PRF membrane functions F (a, b, c, d, E) by calculation after determining the missing tooth three-dimensional modeling functions F (a, b, c, d, E), determines a squeeze film guide plate modeling function G by the determination of the missing tooth three-dimensional modeling functions F (a, b, c, d, E) and the PRF membrane functions F (a, b, c, d, E),
wherein, the PRF film function F (a, b, c, d, E) determines the functional relation of the inner side wall of the film pressing guide plate, and the missing tooth three-dimensional modeling function F (a, b, c, d, E) determines the functional relation of the outer side wall of the film pressing guide plate;
after the first printing module melts the guide plate material according to the moulding function G of the film pressing guide plate, printing is carried out from a first printing nozzle arranged on the first printing module to form the film pressing guide plate;
after the inner side wall of the film pressing guide plate is polished, the second printing module injects a PRF material into the film pressing guide plate through a second printing nozzle arranged on the second printing module according to a PRF film function f (a, b, c, d, e), and the PRF film is formed;
wherein, in the above-mentioned missing tooth three-dimensional modeling function F (a, b, c, D, E), a represents a tooth number, which is determined from natural numbers 1-24 in an order determined by the lower row of teeth and the upper row of teeth, b represents tooth position information, c represents a tooth missing degree, a value setting interval of which is 0.1-0.95, D represents the number of transverse planes to be scanned, which is determined according to a scanning definition set by a 3D printer and a data processing complexity, the higher the scanning definition, the larger the value of D is set, E represents three-dimensional data of each transverse plane, by setting a reference point as a coordinate origin, setting an upper surface position at the center of the maximum diameter of the transverse plane as a coordinate origin, setting corresponding x, y, z coordinates, or setting a two-dimensional coordinate system, setting a position at the center of the maximum diameter of the transverse plane as a coordinate origin, the x, y axes are determined.
Further, in the PRF film function F (a, b, c, d, E), a, b, c, d are consistent with the parameters in F (a, b, c, d, E), and the three-dimensional data of each transverse plane satisfies the following formula:
E(X,Y)＝e(x+x1,y+y1)(1)
e (X, Y) represents two coordinate corresponding values of each transverse plane of the three-dimensional modeling function of the missing tooth;
e (x, y) represents the two coordinate-mapped values for each cross-plane of the PRF film function.
Further, in the above formula (1),
x1, y1 represents the thickness increment per cross-plane of the tooth three-dimensional modeling function per cross-plane of the PRF film function per cross-plane, and L represents the thickness value of the corresponding die pressing guide plate on each cross-plane.
Further, the thickness value L is related to the tooth missing degree c,
L＝L0×c (3)
c represents the tooth loss degree, the value of the c is set to be 0.1-0.95, and L0The preset thickness of the guide plate is shown, the value of the preset thickness is 200um, the preset thickness is determined according to teeth at different positions, the tooth missing degree can be determined according to the proportion of the missing part in the height direction of the whole tooth, the preset height of the tooth is 1.5cm-2.5cm, and the tooth missing degree is determined according to the proportion of the missing part.
Further, after the die pressing guide plate is formed, the second scanning module scans the inner side wall of the die pressing guide plate to form a die pressing guide plate inner side wall function f (a1, b1, c1, d1, e1), the die pressing guide plate inner side wall function f (a1, b1, c1, d1, e1) is compared with the PRF film function f (a, b, c, d, e), and grinding is performed according to the difference between the two functions, so that the three-dimensional value of each transverse plane of the die pressing guide plate inner side wall is smaller than or equal to the corresponding value of the PRF film function under the same coordinate system.
Further, after the PRF film forming is completed, the first printing module acquires the film pressing guide plate modeling function G again, which is also a bone meal modeling function,
injecting bone powder gel into the surface of the PRF film after molding according to the above procedure by the first printing module, wherein the bone powder gel is the same as the molding of the film pressing guide plate, scanning the bone powder gel through the first scanning module after the bone powder gel is molded to obtain a bone powder gel appearance function F (a1, b1, c1, d1 and E1), comparing the bone powder gel appearance function F (a, b, c, d and E) with a missing tooth three-dimensional modeling function F (a, b, c, d and E), and polishing the bone powder gel appearance function F to achieve the same data as the missing tooth three-dimensional modeling function F (a, b, c, d and E).
Further, the manufacturing process of the PRF film comprises the following steps: taking blood out intravenously, and placing in a sterile test tube without antithrombin; the tube was immediately centrifuged at 3000r/min for 10 min; after standing, the blood sample can be divided into 3 layers, and between the red blood cell fragments positioned at the bottom layer and the light yellow clarified liquid platelet plasma positioned at the top layer, light yellow gel at the middle layer is taken out, namely the platelet-rich fibrin is obtained; discarding the supernatant, removing red blood cell part at the bottom of the gel to obtain primary PRF gel, standing in a dry sterilized container for 10min to naturally contract and release serum therein, or adsorbing serum with sterile gauze, and extruding and shaping to obtain platelet-rich fibrin membrane with certain shape, elasticity and toughness.
Further, the bone meal gel comprises poly-racemic lactic acid and mineralized collagen, and the mass of the bone meal gel is 160-200% of that of the poly-racemic lactic acid; the mass of the porous hydroxyapatite is 35 to 40 percent of that of the poly-racemic lactic acid.
Further, the centers of the first printing nozzle and the second printing nozzle are aligned, a transverse guide rail is arranged on a bedplate of the 3D printer to enable the two printing modules to move relatively, opposite surfaces of the two printing nozzles are arc-shaped surfaces respectively, an induction sensor is arranged at the center of each arc-shaped surface to collect and calibrate the positions of the two printing modules, and induction strips are further arranged on the opposite surfaces of the two printing modules to respectively induce the respective positions.
Furthermore, a first supporting table and a second supporting table are respectively arranged at two ends of the bedplate, and a first scanning module and a second scanning module are respectively placed on the two supporting tables and respectively play a supporting role; an adjusting column is further arranged between the two supporting platforms, and a plurality of adjusting holes which are arranged up and down and have certain depth are respectively arranged on the opposite sides of the two supporting platforms.
Compared with the prior art, the method has the beneficial effects that the shape of the tooth missing part of the tooth bone is scanned through the 3D printer to obtain shape data, the three-dimensional reconstruction technology is adopted to simulate the tooth three-dimensional shape of the tooth missing part, then the three-dimensional shape of the film pressing guide plate is determined according to the bone powder thickness, in the printing process, the film pressing guide plate is printed firstly, then the inner side of the film pressing guide plate is scanned, the three-dimensional shape data of the inner side of the film pressing guide plate is compared with the tooth three-dimensional shape, the inner side of the film pressing guide plate is polished, then the PRF film is output by the printer to print the tooth, the tooth missing part is molded, the 3D printer outputs the bone powder at the periphery of the molded tooth according to the three-dimensional shape of the film pressing guide plate, the periphery of the bone powder is polished, and the operation is completed.
In particular, the present invention provides a first printing module for scanning the cross section or shape of the tooth missing part of the tooth bone to obtain the missing tooth three-dimensional modeling data, storing and expressing the missing tooth three-dimensional modeling function F (a, b, c, d, E), wherein the first scanning module determines the missing tooth three-dimensional modeling function F (a, b, c, d, E) and then determines the PRF film function F (a, b, c, d, E) by calculation, and the first printing module determines the moulding function G of the moulding plate of the PRF material by the second printing nozzle arranged thereon according to the PRF film function F (a, b, c, d, e) injecting into a film pressing guide plate, and forming the PRF film. Therefore, the present invention can repair dental pulp while maintaining the activity of the compressed cells by using the entire PRF membrane for dental restoration, and can provide a barrier and support the dental pulp by using the PRF membrane and the bone powder gel structure formed by 3D molding. In addition, the invention firstly forms the film pressing guide plate through the 3D forming technology, which is equivalent to forming a mould, and then forms the PRF film through the film pressing guide plate, thereby overcoming the defect of instability of the single PRF film, being capable of forming at one time and avoiding infection.
Particularly, the material of the pressed film guide plate is an inorganic material such as a PE film, a PVC film and the like, the melting point of the pressed film guide plate is higher than 100 ℃, the pressed film guide plate can also be a ceramic material such as silicon carbide, silicon nitride, aluminum oxide and the like with a high melting point, and the pressed film guide plate can be formed only by outputting molten slurry through 3D printing.
Particularly, the invention is provided with two groups of scanning modules and printing modules, the film pressing guide plate and the PRF film are respectively formed in sequence, and the alignment precision of the two parts is adjusted through the guide rail mechanism and the positioning adjusting structure, so that the rapid and accurate printing and forming are realized.
In particular, after the lamination guide plate is formed, the second scanning module scans the inner side wall of the lamination guide plate 10 to form a lamination guide plate inner side wall function f (a1, b1, c1, d1, e1), the lamination guide plate inner side wall function f (a1, b1, c1, d1, e1) is compared with the PRF film function f (a, b, c, d, e), and grinding is carried out according to the difference of the two functions, so that the three-dimensional value of each transverse plane of the lamination guide plate inner side wall is smaller than or equal to the corresponding value of the PRF film function under the same coordinate system, and the PRF material can be fully filled.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a schematic structural diagram of an environment-friendly PRF film pressing guide plate system according to an embodiment of the present invention;
FIG. 2 is a schematic view of a molding structure of a lamination guide plate according to an embodiment of the present invention;
fig. 3 is a schematic view of a forming structure of a PRF laminated tooth according to an embodiment of the present invention.
Detailed Description
Preferred embodiments of the invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the invention, and do not limit the scope of the invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Please refer to fig. 1, which is a schematic structural diagram of an environment-friendly PRF film pressing guide plate system according to an embodiment of the present invention, including a 3D printer 1, scanning a shape of an edentulous portion of a tooth through the 3D printer to obtain shape data, simulating a three-dimensional tooth model of the missing portion of the tooth by using a three-dimensional reconstruction technique, determining the three-dimensional model of the film pressing guide plate according to a bone powder thickness, during a printing process, firstly printing the film pressing guide plate, then scanning an inner side of the film pressing guide plate, comparing the three-dimensional model data of the inner side of the film pressing guide plate with the three-dimensional tooth model, polishing the inner side of the film pressing guide plate, then outputting a PRF film by using a printer to print the tooth, forming the missing tooth portion, outputting bone powder at a periphery of the formed tooth by using the 3D printer according to the three-dimensional model of the film pressing guide plate, polishing the periphery of the bone powder, and completing the operation.
Specifically, the PRF (platelet rich fibrin membrane) is a gel soft material, is not easy to form by direct 3D printing, is qualified by a film pressing guide plate forming mold, and can be used for repairing damaged teeth and dental pulp by applying bone powder gel to the periphery of the PRF membrane.
Specifically, the PRF film of the embodiment of the present invention is produced by the following steps: taking blood out intravenously, and placing in a sterile test tube without antithrombin; the tube was immediately centrifuged at 3000r/min for 10 min; after standing, the blood sample can be divided into 3 layers, and between the red blood cell fragments positioned at the bottom layer and the light yellow clarified liquid platelet plasma positioned at the top layer, light yellow gel at the middle layer is taken out, namely the platelet-rich fibrin is obtained; discarding the supernatant, removing red blood cell part at the bottom of the gel to obtain primary PRF gel, standing in a dry sterilized container for 10min to naturally contract and release serum therein, or adsorbing serum with sterile gauze, and extruding and shaping to obtain platelet-rich fibrin membrane with certain shape, elasticity and toughness.
Specifically, the bone meal gel provided by the embodiment of the invention comprises poly-racemic lactic acid and mineralized collagen, and the mass of the bone meal gel is 160-200% of that of the poly-racemic lactic acid; the mass of the porous hydroxyapatite is 35 to 40 percent of that of the poly-racemic lactic acid. The preparation process comprises the following steps: preparing a poly-racemic lactic acid solution; adding mineralized collagen into the poly-racemic lactic acid solution, mixing uniformly, adding porous hydroxyapatite, and mixing uniformly to obtain a mixed solution; pouring the mixed solution into a mold; freeze-drying the mould; resolving the material obtained after the freeze-drying; crushing the resolved material; and sieving the particles obtained after crushing to obtain the PLA-based dental bone powder. This is a conventional fabrication method and is not described in detail. The molecular weight of the poly-racemic lactic acid is preferably 115000-85000, and the mineralized collagen is prepared by the following method: adding 120-180 mL of glacial acetic acid into a reaction kettle, pouring purified water to make the total volume reach 3-6L, adding 3-8 g of collagen sponge, and starting stirring. Dissolving 12-15 g of calcium chloride in purified water, filtering the solution through quantitative filter paper, and flowing the solution into a 200mL volumetric flask for later use. Weighing a certain mass of phosphoric acid to enable the molar ratio of phosphorus in the solution to calcium in the calcium chloride solution to be 1-3: 1. The phosphoric acid was dissolved in a suitable amount of purified water, and the solution was filtered through a quantitative filter paper and poured into a 200mL volumetric flask for use. 10-30 g of sodium hydroxide is dissolved in 400mL of purified water for later use. And (3) slowly adding 300-800 mL of the prepared calcium chloride solution into the stirred acid-soluble collagen solution while stirring, and fully reacting and stirring for 2-8 hours. And then, continuously adding 250-500 mL of the prepared phosphoric acid solution into the reaction system, and fully reacting and stirring for 1-5 hours. Adding the prepared sodium hydroxide solution into a reaction system, measuring the pH value, stopping dropwise adding until the pH value is 6-8, continuously stirring the mixed solution for 5-24 h, standing for precipitation, and cleaning the precipitate. And (4) freeze-drying the cleaned precipitate to obtain the mineralized collagen. This is a common manufacturing method and is not described herein.
Specifically, the squeeze film guide plate is made of inorganic materials such as a PE film and a PVC film, the melting point of the squeeze film guide plate is higher than 100 ℃, and the squeeze film guide plate can also be made of ceramic materials such as silicon carbide, silicon nitride and aluminum oxide with high melting points, and the squeeze film guide plate can be formed only by outputting molten slurry through 3D printing.
As shown in fig. 1, the 3D printer of the present embodiment includes a first scanning module 17 provided at one end, a second scanning module 27 provided at the other end, and a first printing module 21 and a second printing module 22 provided at the middle portion. Wherein, the first scanning module 17 scans the cross section or the shape of the tooth to be restored, generates the missing tooth three-dimensional shape of the missing tooth part, that is, the three-dimensional shape of the missing tooth part, and stores and expresses the missing tooth three-dimensional shape function F (a, b, c, D, E), wherein, a represents the tooth mark number, which is determined from natural number 1-24 according to the sequence determined by the lower row of teeth and the upper row of teeth, b represents the tooth position information, which is specifically located at the oral cavity position, and is convenient for positioning the tooth, c represents the tooth missing degree, the value setting interval is 0.1-0.95, because the tooth is missing seriously, the required restoration volume is large, the main components adopted in the embodiment are PRF film and soft body, therefore, the thickness of bone powder is determined according to the missing degree, D represents the number of the scanning transverse layers, and is determined according to the scanning definition set by the 3D printer and the complexity of data processing, the higher the scanning definition is, the larger the d value is set, and E represents the three-dimensional data of each transverse plane, and the three-dimensional data is determined by setting the reference point as the coordinate origin, setting the corresponding x, y, and z coordinates by setting the upper surface position at the center of the maximum diameter of the transverse plane as the coordinate origin, or setting the position at the center of the maximum diameter of the transverse plane as the coordinate origin, and determining the x, y axes by setting the two-dimensional coordinate system without considering the thickness of the transverse plane.
Specifically, after determining the missing tooth three-dimensional modeling function F (a, b, c, d, E), the first scanning module 17 determines, by calculation, that the PRF film function F (a, b, c, d, E), a, b, c, d is consistent with the parameters in F (a, b, c, d, E). Wherein the content of the first and second substances,
E(X,Y)＝e(x+x1,y+y1) (1)
e (X, Y) represents two coordinate corresponding values of each transverse plane of the three-dimensional modeling function of the missing tooth;
e (x, y) represents the corresponding value of two coordinates of each transverse plane of the PRF film function;
x1, y1 represents the thickness increment per cross-plane of the tooth three-dimensional modeling function per cross-plane of the PRF film function per cross-plane, and L represents the thickness value of the corresponding die pressing guide plate per cross-plane, as shown in conjunction with FIG. 2. In this embodiment, the thickness L is related to the tooth missing degree c,
L＝L0×c (3)
in this embodiment, c represents the degree of tooth loss, and the value is set in the interval of 0.1-0.95, L0The preset thickness of the guide plate is shown, the value of the preset thickness is 200um, the preset thickness is determined according to teeth at different positions, the tooth missing degree can be determined according to the proportion of the missing part in the height direction of the whole tooth, the preset height of the tooth is 1.5cm-2.5cm, and the tooth missing degree is determined according to the proportion of the missing part.
According to the embodiment of the invention, the thickness of the guide plate is increased along with the increase of the missing degree of the teeth, and when the teeth with larger volume need to be restored, the thickness of the guide plate is increased along with the increase of the missing degree of the teeth, so that a good supporting effect is achieved.
Specifically, by determining the three-dimensional modeling functions F (a, b, c, d, E) and the PRF film functions F (a, b, c, d, E) of the missing teeth, the squeeze film guide modeling function G is finally determined,
the PRF film function F (a, b, c, d, E) determines the functional relation of the inner side wall of the film pressing guide plate, and the missing tooth three-dimensional modeling function F (a, b, c, d, E) determines the functional relation of the outer side wall of the film pressing guide plate.
Referring to fig. 1, after the first printing module 21 of the present embodiment melts the guide material according to the above described squeeze film guide modeling function G, the first printing module 21 prints from the first print head 31 disposed on the first printing module 21 to form the squeeze film guide 10, i.e., the PRF film forming mold. After the die pressing guide plate 10 is formed, the second scanning module 27 scans the inner side wall of the die pressing guide plate 10 to form a die pressing guide plate inner side wall function f (a1, b1, c1, d1, e1), the die pressing guide plate inner side wall function f (a1, b1, c1, d1, e1) is compared with a PRF film function f (a, b, c, d, e), and grinding is carried out according to the difference of the two functions, so that the three-dimensional value of each transverse surface of the die pressing guide plate inner side wall is smaller than or equal to the corresponding value of the PRF film function under the same coordinate system, and the PRF material can be fully filled. After finishing polishing the inner side wall of the film pressing guide plate, the second printing module 22 injects the PRF material into the film pressing guide plate 10 through the second printing nozzle 32 arranged on the second printing module according to the PRF film function f (a, b, c, d, e), and the PRF film is formed and taken out for later use.
As shown in connection with fig. 1, in the present embodiment, the first print head 21 and the second print head 22 are centrally aligned, and a transverse guide rail 16 is provided on the platen 13 of the 3D printer to enable relative movement of the two print modules. The opposite face of two printing shower nozzles of this embodiment is the arcwall face respectively, sets up inductive sensor 221 at the center of arcwall face to gather and calibrate two positions of printing the module, still be provided with the response strip 223 at two opposite faces of printing the module, respond to respective position respectively, so that adjust the relative position of two modules.
Referring to fig. 1, a first supporting table 11 and a second supporting table 12 are respectively disposed at two ends of the platen 13, and a first scanning module 17 and a second scanning module 27 are respectively disposed on the two supporting tables and respectively support the two supporting tables. An adjusting column 14 is further arranged between the two supporting platforms, a plurality of adjusting holes 15 which are arranged up and down are respectively arranged at the opposite sides of the two supporting platforms, and the adjusting holes 15 have a certain depth so as to adjust the height of the adjusting column and adjust the relative position by moving the two supporting platforms.
Referring to fig. 1, the first scanning module 17 and the second scanning module 27 of the present embodiment can both move laterally, and CBCT tomography is adopted, wherein the first scanning module 17 penetrates into the first cross shaft 18 and can move laterally along the first cross shaft, and a boss is disposed at a free end of the first cross shaft, and can limit the first scanning module; accordingly, the second scanning module 27 penetrates into the second transverse axis 28 and is positionable laterally shifting the stage along the second transverse axis. In this embodiment, the first scanning module 17 and the second scanning module 27 communicate with each other, and communicate with each other in a wired or wireless manner to exchange data. Similarly, the first printing module and the second printing module are communicated with each other in a wired or wireless mode to exchange data.
Specifically, after completing the PRF film formation, the first printing module 21 acquires the squeeze film guide modeling function G again, which is also the bone meal modeling function.
The first printing module 21 injects bone powder gel into the surface of the PRF film after forming according to the above procedure, the bone powder gel is formed in the same way as the film pressing guide plate, after the bone powder gel is formed, the first scanning module scans to obtain a bone powder gel shape function F (a1, b1, c1, d1, E1), compares the bone powder gel shape function F (a, b, c, d, E) with the missing tooth three-dimensional modeling function F (a, b, c, d, E), and then polishes the bone powder gel to obtain the data in the same way as the missing tooth three-dimensional modeling function F (a, b, c, d, E). And (5) restoring the prepared PRF film and bone meal gel on the original tooth.
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.
Claims (6)
1. An environment-friendly PRF pressed film guide plate system, comprising: a 3D printer, wherein,
the 3D printer comprises a first scanning module arranged at one end, a second scanning module arranged at the other end, a first printing module and a second printing module which are arranged at the middle part;
the first scanning module scans the section or the shape of the edentulous part of the tooth bone to acquire missing tooth three-dimensional modeling data, stores and expresses missing tooth three-dimensional modeling functions F (a, b, c, d, E), determines PRF membrane functions F (a, b, c, d, E) by calculation after determining the missing tooth three-dimensional modeling functions F (a, b, c, d, E), determines a squeeze film guide plate modeling function G by the determination of the missing tooth three-dimensional modeling functions F (a, b, c, d, E) and the PRF membrane functions F (a, b, c, d, E),
wherein, the PRF film function F (a, b, c, d, E) determines the functional relation of the inner side wall of the film pressing guide plate, and the missing tooth three-dimensional modeling function F (a, b, c, d, E) determines the functional relation of the outer side wall of the film pressing guide plate;
after the first printing module melts the guide plate material according to the moulding function G of the film pressing guide plate, printing is carried out from a first printing nozzle arranged on the first printing module to form the film pressing guide plate;
after the inner side wall of the film pressing guide plate is polished, the second printing module injects a PRF material into the film pressing guide plate through a second printing nozzle arranged on the second printing module according to a PRF film function f (a, b, c, d, e), and the PRF film is formed;
wherein, in the above-mentioned missing tooth three-dimensional modeling function F (a, b, c, D, E), a represents a tooth number, which is a natural number of 1-24, determined in the order determined by the lower row of teeth and the upper row of teeth, b represents tooth position information, c represents a tooth missing degree, the value setting interval is 0.1-0.95, D represents the number of transverse plane layers to be scanned, determined according to the scanning definition set by the 3D printer and the complexity of data processing, the higher the scanning definition, the larger the value D is set, E represents three-dimensional data of each transverse plane, by setting a reference point as a coordinate origin, setting an upper surface position at the center of the maximum diameter of the transverse plane as a coordinate origin, setting corresponding x, y, z coordinates, or setting a two-dimensional coordinate system, setting the position at the center of the maximum diameter of the transverse plane as a coordinate origin, determining an x axis and a y axis;
after the PRF film forming is completed, the first printing module acquires the moulding function G of the film pressing guide plate again, which is also the bone meal moulding function,
injecting bone powder gel into the surface of the PRF film formed by the first printing module according to the above procedure, wherein the bone powder gel is formed in the same way as the film pressing guide plate, scanning the bone powder gel by the first scanning module after the bone powder gel is formed to obtain a bone powder gel appearance function F (a1, b1, c1, d1 and E1), comparing the bone powder gel appearance function F (a, b, c, d and E) with a missing tooth three-dimensional modeling function F (a, b, c, d and E), and polishing the bone powder gel appearance function F to obtain the same data as the missing tooth three-dimensional modeling function F (a, b, c, d and E);
in the PRF film function F (a, b, c, d, E), a, b, c, d are consistent with parameters in F (a, b, c, d, E), and the three-dimensional data of each transverse plane satisfies the following formula:
E(X,Y)＝e(x+x1,y+y1)(1)
e (X, Y) represents two coordinate corresponding values of each transverse plane of the three-dimensional modeling function of the missing tooth;
e (x, y) represents the corresponding value of two coordinates of each transverse plane of the PRF film function;
in the above-mentioned formula (1),
x1, y1 represents the thickness increment of the PRF film function per cross plane of the tooth three-dimensional modeling function, and L represents the thickness value of the corresponding film pressing guide plate on each cross plane;
said thickness value L being related to the degree of tooth loss c,
L＝L0×c(3)
c represents the tooth missing degree, the value setting interval is 0.1-0.95, L0 represents the preset thickness of the guide plate, the value is 200um, the tooth missing degree is determined according to the tooth at different positions, the tooth missing degree can be determined according to the proportion of the missing part in the whole tooth height direction, the preset height of the tooth is 1.5cm-2.5cm, and the proportion of the missing part determines the tooth missing degree.
2. The environment-friendly PRF squeeze film guide system according to claim 1, wherein after the squeeze film guide is formed, the second scanning module scans the inner side wall of the squeeze film guide to form a squeeze film guide inner side wall function f (a1, b1, c1, d1, e1), the squeeze film guide inner side wall function f (a1, b1, c1, d1, e1) is compared with the PRF film function f (a, b, c, d, e), and grinding is performed according to the difference between the two functions, so that the three-dimensional value of each cross plane of the squeeze film guide inner side wall is less than or equal to the corresponding value of the PRF film function under the same coordinate system.
3. The environment-friendly PRF die pressing guide plate system according to claim 1, wherein the PRF film is manufactured by the following process: placing the blood in a sterile test tube without antithrombin; the tube was immediately centrifuged at 3000r/min for 10 min; after standing, the blood sample can be divided into 3 layers, and between the red blood cell fragments positioned at the bottom layer and the light yellow clarified liquid platelet plasma positioned at the top layer, light yellow gel at the middle layer is taken out, namely the platelet-rich fibrin is obtained; discarding the supernatant, removing red blood cell part at the bottom of the gel to obtain primary PRF gel, standing in a dry sterilized container for 10min to naturally contract and release serum therein, or adsorbing serum with sterile gauze, and extruding and shaping to obtain platelet-rich fibrin membrane with certain shape, elasticity and toughness.
4. The environment-friendly PRF film pressing guide plate system according to claim 3, wherein the bone meal gel comprises poly-racemic lactic acid and mineralized collagen, and the mass of the bone meal gel is 160-200% of the mass of the poly-racemic lactic acid; the mass of the porous hydroxyapatite is 35 to 40 percent of that of the poly-racemic lactic acid.
5. An environment-friendly PRF film pressing guide plate system according to claim 1, wherein the first printing nozzle and the second printing nozzle are aligned in the center, and a transverse guide rail is arranged on a platen of the 3D printer to enable the two printing modules to move relatively, wherein the opposite faces of the two printing nozzles are arc faces respectively, an induction sensor is arranged in the center of the arc face to collect and calibrate the positions of the two printing modules, and induction strips are arranged on the opposite faces of the two printing modules to respectively sense the positions.
6. The environment-friendly PRF film pressing guide plate system according to claim 5, wherein a first supporting table and a second supporting table are respectively arranged at two ends of the platen, and a first scanning module and a second scanning module are respectively arranged on the two supporting tables and respectively support the two supporting tables; an adjusting column is further arranged between the two supporting platforms, and a plurality of adjusting holes which are arranged up and down and have certain depth are respectively arranged on the opposite sides of the two supporting platforms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910767178.1A CN110464499B (en) | 2019-08-20 | 2019-08-20 | Environment-friendly PRF film pressing guide plate system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910767178.1A CN110464499B (en) | 2019-08-20 | 2019-08-20 | Environment-friendly PRF film pressing guide plate system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110464499A CN110464499A (en) | 2019-11-19 |
| CN110464499B true CN110464499B (en) | 2021-09-10 |
Family
ID=68511208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910767178.1A Active CN110464499B (en) | 2019-08-20 | 2019-08-20 | Environment-friendly PRF film pressing guide plate system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110464499B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104905881A (en) * | 2015-04-27 | 2015-09-16 | 苏州光影口腔医疗科技有限公司 | Low-cost multi-material auxiliary guide plate 3 D (three dimensional) printing method |
| CN106584846A (en) * | 2016-12-22 | 2017-04-26 | 深圳市优美齿医疗科技有限公司 | Integrated production equipment for concealed correcting devices and production method thereof |
| CN108096636A (en) * | 2017-12-22 | 2018-06-01 | 北京奥精医药科技有限公司 | PLA abutments section bone meal and preparation method thereof |
| CN108621411A (en) * | 2017-03-21 | 2018-10-09 | 磐纹科技（上海）有限公司 | The method for automatically leveling of self-leveling 3D printer and 3D printer |
| CN109350277A (en) * | 2018-10-08 | 2019-02-19 | 杭州而然科技有限公司 | A method of the accurate production dental prosthesis of digitlization |
| CN109481054A (en) * | 2018-12-20 | 2019-03-19 | 北京大学口腔医学院 | A kind of digitalized oral cavity restorative procedure and system |
| CN109998714A (en) * | 2019-04-10 | 2019-07-12 | 青岛威尔赫义齿科技有限公司 | A kind of 3 D-printing formula preparation method of tooth-implanting bridge |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040152036A1 (en) * | 2002-09-10 | 2004-08-05 | Amir Abolfathi | Architecture for treating teeth |
| US7333874B2 (en) * | 2004-02-24 | 2008-02-19 | Cadent Ltd. | Method and system for designing and producing dental prostheses and appliances |
| JP2016030158A (en) * | 2014-07-30 | 2016-03-07 | 株式会社岩間工業所 | Prosthetic appliance machining method and prosthetic appliance machining device |
| CN106626351A (en) * | 2016-12-19 | 2017-05-10 | 深圳晗竣雅科技有限公司 | Rapid denture forming method and rapid denture forming device |
| CN107411835A (en) * | 2017-07-27 | 2017-12-01 | 河源市精鹰义齿技术有限公司 | A kind of 3D short-term trainings tooth makes and method |
-
2019
- 2019-08-20 CN CN201910767178.1A patent/CN110464499B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104905881A (en) * | 2015-04-27 | 2015-09-16 | 苏州光影口腔医疗科技有限公司 | Low-cost multi-material auxiliary guide plate 3 D (three dimensional) printing method |
| CN106584846A (en) * | 2016-12-22 | 2017-04-26 | 深圳市优美齿医疗科技有限公司 | Integrated production equipment for concealed correcting devices and production method thereof |
| CN108621411A (en) * | 2017-03-21 | 2018-10-09 | 磐纹科技（上海）有限公司 | The method for automatically leveling of self-leveling 3D printer and 3D printer |
| CN108096636A (en) * | 2017-12-22 | 2018-06-01 | 北京奥精医药科技有限公司 | PLA abutments section bone meal and preparation method thereof |
| CN109350277A (en) * | 2018-10-08 | 2019-02-19 | 杭州而然科技有限公司 | A method of the accurate production dental prosthesis of digitlization |
| CN109481054A (en) * | 2018-12-20 | 2019-03-19 | 北京大学口腔医学院 | A kind of digitalized oral cavity restorative procedure and system |
| CN109998714A (en) * | 2019-04-10 | 2019-07-12 | 青岛威尔赫义齿科技有限公司 | A kind of 3 D-printing formula preparation method of tooth-implanting bridge |
Non-Patent Citations (1)
| Title |
|---|
| 富血小板纤维蛋白在整形外科中的应用及研究;赵启明 丁寅佳;《现代实用医学》;20150120;第27卷(第1期);4-5 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110464499A (en) | 2019-11-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Tian et al. | A review of 3D printing in dentistry: Technologies, affecting factors, and applications | |
| Abduo et al. | Trends in computer-aided manufacturing in prosthodontics: a review of the available streams | |
| WO2018014636A1 (en) | Cad/cam/slm-3d combined printing method for dental restorations | |
| KR101235320B1 (en) | Method of manufacturing and installing a ceramic dental implant with aesthetic implant abutment | |
| CN102098979B (en) | Molded member made of form-stabilized material and method for the manufacture thereof | |
| WO2018090579A2 (en) | Concurrent fixed-movable joint repair method | |
| CN107805066B (en) | Method for processing biological ceramic parts based on selective laser sintering | |
| WO2017193981A1 (en) | Dental restoration cad/metal 3d automatic processing method | |
| CN105078598B (en) | The digitized preparation method of edentulous jaw personalization impression tray | |
| EP3181090B1 (en) | Dental all-ceramic restoration and manufacturing method thereof | |
| CN105852998A (en) | Automatic CAD/CAM/3D processing method of dental prostheses | |
| Palin et al. | Trends in indirect dentistry: 8. CAD/CAM technology | |
| CN112972031B (en) | High-precision false tooth and preparation method thereof | |
| CN108245432B (en) | Additive manufacturing method of all-ceramic dental prosthesis | |
| CN105982753A (en) | Method for improving positioning precision of edentulous personalized tray in oral cavity | |
| US20100244294A1 (en) | Smc crown shells | |
| CN1267080C (en) | Composite material for repairing deletion of tooth and human hard tissues and its preparation | |
| Kihara et al. | Applications of three-dimensional printers in prosthetic dentistry | |
| CN104367387B (en) | Simulate customized metal tooth stake of nature tooth mechanical property and preparation method thereof | |
| CN110464499B (en) | Environment-friendly PRF film pressing guide plate system | |
| Wang et al. | Recent progress in additive manufacturing of ceramic dental restorations | |
| CN108272521A (en) | A kind of upper jaw prosthesis production method | |
| CN109394366A (en) | A kind of method of the porous reproducible combination tooth of 3D printing | |
| US20230240798A1 (en) | Dental components | |
| Al Sayed El Saaedi et al. | Evaluation of Accuracy and Position of Milled and 3D-Printed Teeth in Digital Complete Dentures. |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220428 Address after: 132013 no.3999 Binjiang East Road, Fengman District, Jilin City, Jilin Province Patentee after: BEIHUA University Address before: 131300 Cao Wo Pu Tun, Wujianfang village, Lianhe Township, Da'an City, Baicheng City, Jilin Province Patentee before: Hu Guangyao |