CN111590878B - 3d printing planting guide plate manufacturing device and method - Google Patents

3d printing planting guide plate manufacturing device and method Download PDF

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Publication number
CN111590878B
CN111590878B CN202010440563.8A CN202010440563A CN111590878B CN 111590878 B CN111590878 B CN 111590878B CN 202010440563 A CN202010440563 A CN 202010440563A CN 111590878 B CN111590878 B CN 111590878B
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China
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guide plate
printing
implant
intraoral
data
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CN111590878A (en
Inventor
郭云霏
张昀
李婷婷
王晓龙
赵小娥
姬忠莹
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Lanzhou Stomatological Hospital
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Lanzhou Stomatological Hospital
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/10—Processes of additive manufacturing
    • B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0089—Implanting tools or instruments
    • A61C8/009—Implanting tools or instruments for selecting the right implanting element, e.g. templates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/30—Auxiliary operations or equipment
    • B29C64/379—Handling of additively manufactured objects, e.g. using robots
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/30—Auxiliary operations or equipment
    • B29C64/386—Data acquisition or data processing for additive manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/30—Auxiliary operations or equipment
    • B29C64/386—Data acquisition or data processing for additive manufacturing
    • B29C64/393—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y10/00—Processes of additive manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
    • B33Y40/20—Post-treatment, e.g. curing, coating or polishing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y50/00—Data acquisition or data processing for additive manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y50/00—Data acquisition or data processing for additive manufacturing
    • B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Optics & Photonics (AREA)
  • Health & Medical Sciences (AREA)
  • Robotics (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
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  • General Health & Medical Sciences (AREA)
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Abstract

The invention discloses a 3D printing implant guide plate manufacturing device and a manufacturing method, wherein the manufacturing device comprises a data acquisition module, a data processing module and a 3D printing device, wherein the data acquisition module is used for a patient to shoot a CBCT (cone beam computed tomography) and obtain imaging data, and for the patient to carry out oral true color scanning and obtain an intraoral three-dimensional scanning picture; the data acquisition module is also used for transmitting the imaging data and the intraoral three-dimensional scanning picture to the data processing module; the data processing module is used for matching the received imaging data with the intraoral three-dimensional scanning picture and carrying out three-dimensional reconstruction, determining the position of the upper structure of the implant, marking an important anatomical structure, determining the model and the position of the implant, drawing the edge of the implant guide plate and generating a guide plate file; the data processing module is also used for transferring the guide plate file into the 3D printing device, and the 3D printing device completes 3D printing.

Description

3d printing planting guide plate manufacturing device and method
Technical Field
The invention belongs to the technical field of medical appliances, and particularly relates to a novel 3d printing planting guide plate manufacturing device and a manufacturing method.
Background
The implant is repaired by the retention force provided by the implant, can achieve the same appearance and function as the real tooth, has no foreign body sensation in the mouth of a patient, and improves the comfort level of the patient. Because the implant restoration mode is a novel restoration mode of implanting the artificial tooth root in the alveolar bone of the missing tooth and installing the restoration body on the artificial tooth root, the implant restoration does not need to grind off the adjacent tooth to provide the retention force for the adjacent tooth, does not have any damage to the healthy adjacent tooth, and can prevent the adjacent tooth from displacing or loosening due to the missing tooth. The implant is composed of a tooth root and a tooth crown like a real tooth, the implant is made of a columnar structure made of pure titanium metal, and a layer of material with good biocompatibility is wrapped on the surface of the columnar structure, so that the columnar structure can be tightly connected with an alveolar bone, the implant can be firmly rooted in the alveolar bone of a patient like the real tooth, and the implant provides a fixing force like the real tooth root. The natural tooth transmits the chewing pressure in the oral cavity to the alveolar bone through the tooth root, and the implant sufficiently simulates the biomechanical conduction process to transmit the chewing pressure to the alveolar bone through the artificial tooth root (implant), so that the implant can bear stronger mandibular occlusal force than a general prosthesis, and the chewing efficiency is more excellent than that of a traditional denture.
However, dental implants have their drawbacks as a dental prosthesis technology of the technical level examined. If the implantation operation is not accurate, the adjacent teeth, nerves and other potential danger areas can be injured; if the angle of the implanted implant is not good or the installation of the repair crown is not precise, sequelae such as weak chewing, easy food filling, periodontitis inflammation and the like can occur, and the service life of teeth can be affected; if the dental regimen is not properly selected, unnecessary waiting and pain may be incurred.
Because the implant operation is a novel repair technology for implanting the implant in the alveolar bone, a hole for accommodating the implant to be embedded needs to be formed in the alveolar bone before the implant is implanted. The process is the most critical factor influencing the success or failure of the implant operation, because the appearance of the implant is slowly expanded by changing the cutter for a plurality of times from small to large in the process, and the failure of the implant operation can not achieve the expected repairing effect due to slight deviation.
In the prior art, the implantation operation has quite high requirements on the clinical experience and qualification of doctors, the success of the operation depends on the clinical experience of the doctors to a great extent, and the advanced degree of medical equipment also has very high requirements. The position and the installation direction of the implant are judged by the experience of doctors, and the implantation effects of different doctors are different. The operation is at great risk because the alveolar bone and the neural tube cannot be visually seen in the operation process.
In the prior art, need the patient to carry out the oral cavity impression taking in order to obtain patient's oral cavity model before planting, use silicon rubber or alginate to carry out the impression taking usually, carry out the model and pour into, can cause the uncomfortable sense of patient at the impression taking in-process, the model fineness that manual impression taking obtained has difference with the intraoral actual conditions of patient to can not show the position of key anatomical landmarks such as patient's neural tube, thereby increase the degree of difficulty of planting the operation design. The oral true color scanning technology adopted by the invention uses the probe to scan the mouth of the patient, can accurately and quickly obtain soft and hard tissue data in the mouth of the patient, has small error, can be matched with CBCT data and then carries out three-dimensional reconstruction to obtain a three-dimensional digital model, expresses key anatomical marks which cannot be seen by meat on the digital model, and improves the accuracy of the design of the planting operation.
In the traditional implant operation, a doctor analyzes and determines the implant needed by the implant operation on a plaster model, and then roughly determines the position of an implant guide plate through manual measurement and calculation.
Before the 3D printing technology appeared, need mail the processing factory with gypsum model, the baffle was planted in the processing factory use traditional preparation technique preparation, because the restriction in aspects such as material, equipment, transportation commodity circulation, preparation baffle cycle length often needs the time about a week, and it has the thermal deformation, the not enough scheduling problem of intensity to plant the baffle. According to the technology, the 3d printing planting guide plate manufacturing device and the 3d printing planting guide plate manufacturing method are provided, the automation degree is high, data collection and processing can be completed on the same day to complete manufacturing of the planting guide plate, the guide plate manufactured through the device is high in hardness and not prone to deformation, and the success rate of planting operations is greatly improved.
Disclosure of Invention
In order to solve the technical problems, the invention provides a 3d printing implant guide plate manufacturing device and a manufacturing method, the 3d printing implant guide plate manufacturing device and the manufacturing method have high automation degree, the position of an upper structure of an implant is determined by three-dimensional reconstruction through matching CBCT data and intraoral scanning data, an important anatomical structure (such as a mandibular nerve tube) can be marked, the model and the position of the implant are further determined, and the manufactured implant guide plate is more accurate.
In order to solve the technical problem, the invention provides a 3D printing and planting guide plate manufacturing device which comprises a data acquisition module, a data processing module and a 3D printing device, wherein the data acquisition module is used for a patient to shoot a CBCT (cone beam computed tomography) and obtain imaging data, and for the patient to carry out oral true color scanning and obtain an intraoral three-dimensional scanning picture; the data acquisition module is also used for transmitting the imaging data and the intraoral three-dimensional scanning picture to the data processing module; the data processing module is used for matching the received imaging data with the intraoral three-dimensional scanning picture and carrying out three-dimensional reconstruction, determining the position of the upper structure of the implant, marking an important anatomical structure, determining the model and the position of the implant, drawing the edge of the implant guide plate and generating a guide plate file; the data processing module is also used for transferring the guide plate file into the 3D printing device, and the 3D printing device completes 3D printing.
The data processing module comprises planting guide plate software, and the planting guide plate software is used for matching the received imaging data with the intraoral three-dimensional scanning picture and performing three-dimensional reconstruction.
The labeling of the important anatomical structures comprises labeling of a mandibular nerve tube.
The guide plate file is a file in an STL format.
The 3D printing device is a 3D printer supporting STL format.
The 3D printing device comprises a printing head, a control device and a cable, wherein the printing head comprises a feeding cylinder, an extrusion part, a circular truncated cone sleeve and an inverted cone sleeve, and the feeding cylinder is connected with the extrusion part through threads; a first feeding pipe, a second feeding pipe and a plurality of heater grooves which are axially communicated are arranged in the extrusion part, and the plurality of heater grooves are arranged along the circumferential direction of the first feeding pipe and the second feeding pipe; a tubular heater is vertically arranged in each heater groove; a feeding screw is arranged in the feeding cylinder and used for extruding the printing material in the feeding cylinder into the first material passing pipe and extruding the printing material through the second material passing pipe; the side wall of the extrusion part is provided with a wire inlet hole which is communicated with the heater groove; the cable extends into the heater groove through the wire inlet hole, the tubular heater is electrically connected with the control device through the cable, and the heating temperature of the tubular heater is controlled by the control device; the extrusion part comprises a cylindrical part and an inverted cone part, the circular truncated cone sleeve is sleeved outside the cylindrical part, the inverted cone sleeve is sleeved outside the inverted cone part, a first gap is defined between the inner wall surface of the circular truncated cone sleeve and the outer wall surface of the cylindrical part, a second gap is defined between the inner wall surface of the inverted cone sleeve and the outer wall surface of the inverted cone part, and the first gap and the second gap are communicated with each other; the outer wall surface of the circular truncated cone sleeve is provided with a hot air inlet communicated with the first gap, and the outer wall surface of the inverted conical sleeve is provided with a cooling gas channel communicated with the second gap.
The inner wall of the feeding cylinder is provided with internal threads, the outer wall of the extrusion part is provided with external threads, and the feeding cylinder and the extrusion part are connected together through the internal threads and the external threads.
The diameter of the first material passing pipe is larger than that of the second material passing pipe.
The heater grooves are provided with three heater grooves which are uniformly arranged at intervals of 120 degrees.
The invention also provides a manufacturing method of the 3d printing planting guide plate, which comprises the following steps:
the method comprises the following steps of firstly, data acquisition:
the patient shoots the CBCT and obtains imaging data;
the patient carries out oral true color scanning and obtains an intraoral three-dimensional scanning picture;
step two, data processing:
transmitting the imaging data and the intraoral three-dimensional scanning picture to the planting guide plate software;
matching the imaging data with the intraoral three-dimensional scanning picture, performing three-dimensional reconstruction, and determining the position of the upper structure of the implant;
marking an important anatomical structure, determining the model and the position of an implant, drawing the edge of an implant guide plate and generating a guide plate file in an STL format;
and step three, completing 3D printing:
and transmitting the guide plate file data in the STL format into the 3D printing device to finish 3D printing.
Compared with the prior art, the technical scheme of the invention has the following advantages:
(1) the 3d printing implant guide plate manufacturing device and the manufacturing method are high in automation degree, the position of the upper structure of the implant is determined by utilizing three-dimensional reconstruction through matching CBCT data and intraoral scanning data, an important anatomical structure (such as a mandibular nerve tube) can be marked, the model and the position of the implant are further determined, and the manufactured implant guide plate is more accurate.
(2) According to the 3d printing planting guide plate manufacturing device, the circumferential heater and the circumferential cooling device are arranged, the 3d printing temperature can be accurately controlled, cracks are prevented from occurring in the printing process of the planting guide plate, the printing material is cooled by low-temperature nitrogen immediately when the printing material leaves the printing device through the cooling device, the quenching effect is formed, the surface hardness of the planting guide plate is improved, and the planting guide plate is prevented from deforming.
Drawings
In order that the present disclosure may be more readily and clearly understood, reference is now made to the following detailed description of the embodiments of the present disclosure taken in conjunction with the accompanying drawings, in which
Fig. 1 is a schematic structural view of a prior art planting guide.
Fig. 2 is a schematic structural diagram of a 3D printing apparatus according to the present invention.
Fig. 3 is a sectional view of the 3D printing apparatus.
Detailed Description
The invention provides a 3D printing planting guide plate manufacturing device which comprises a data acquisition module, a data processing module and a 3D printing device, wherein the data acquisition module is used for a patient to shoot a CBCT (cone beam computed tomography) and obtain imaging data, and for the patient to carry out oral true color scanning and obtain an oral three-dimensional scanning picture; the data acquisition module is also used for transmitting the imaging data and the intraoral three-dimensional scanning picture to the data processing module; the data processing module is used for matching the received imaging data with the intraoral three-dimensional scanning picture and carrying out three-dimensional reconstruction, determining the position of the upper structure of the implant, marking an important anatomical structure, determining the model and the position of the implant, drawing the edge of the implant guide plate and generating a guide plate file; the data processing module is also used for transferring the guide plate file into the 3D printing device, and the 3D printing device completes 3D printing.
The data processing module comprises planting guide plate software, and the planting guide plate software is used for matching the received imaging data with the intraoral three-dimensional scanning picture and performing three-dimensional reconstruction.
The labeling of the important anatomical structures comprises labeling of a mandibular nerve tube.
The guide plate file is a file in an STL format.
The 3D printing device is a 3D printer supporting STL format.
In one embodiment, the data acquisition module may take CBCT with kavo in germany and scan the oral cavity true color with 3shape in denmark. The 3D printing device can adopt a German BEGO Varseo 3D printer.
As shown in fig. 1, the prior art implant guide plate generally comprises a base plate 202 and a plurality of guide holes 204 formed on the base plate 202, wherein the installation position, the internal depth and the inclination angle of the guide holes 204 have strict requirements, and if deviations occur, the normal operation of the implant operation will be affected, unnecessary pain is brought to the patient, and the effect of the operation is seriously affected.
When the 3D printer is used for printing, the printing material needs to be heated to be in a fluid state, the printing material in the fluid state is extruded layer by layer, and the printing materials on different layers are overlapped together to form a required shape. Due to the fact that the cooling speeds of the printing materials on different layers are different, cracks are easily formed among the layers, local warping of the whole planting guide plate is caused, and machining accuracy of the planting guide plate is affected. And stress concentration is easily generated at the joint of the guide hole 204 and the base plate 202, and when the cutting tool is used, the cutting tool inevitably needs to vibrate and collide with the guide hole at high frequency because the cutting tool needs to pass through the guide hole 204 to contact with the alveolar bone of a patient, and if stress concentration exists, the guide hole is easily broken, so that the normal use of the planting guide plate is influenced. The 3D printing planting guide plate is high in cost, and high economic loss is brought to a patient once the 3D printing planting guide plate is broken. And if the implant guide plate is broken in the operation, great pain is caused to the patient, and medical disputes are caused. In addition, in addition to avoiding stress concentration as much as possible, it is also necessary to maintain the top edge of the guide hole 204 to have high hardness, so as to avoid the guide hole from being broken due to collision of the tool, and further avoid the tool from shifting.
In order to avoid cracks between layers of the planting guide plate in the 3D printing process, reduce stress concentration and improve local hardness, the invention partially modifies a 3D printing device, as shown in figures 2 to 3, the 3D printing device comprises a printing head 12, a control device 76 and a cable 16, the printing head 12 comprises a feeding cylinder 48, an extruding part 50, a circular truncated cone sleeve 14 and an inverted cone sleeve 84, and the feeding cylinder 48 is connected with the extruding part 50 through a thread 60; the extrusion part 50 is internally provided with a first feeding pipe 52, a second feeding pipe 62 and a plurality of heater grooves 68 which are axially communicated, and the plurality of heater grooves 68 are arranged along the circumferential direction of the first feeding pipe 52 and the second feeding pipe 62; a tubular heater is vertically disposed in each heater pocket 68; a feeding screw 54 is arranged inside the feeding cylinder 48 and is used for extruding the printing material in the feeding cylinder into the first material passing pipe 52 and extruding the printing material through the second material passing pipe 62; the side wall of the extrusion part 50 is provided with a wire inlet hole 74, and the wire inlet hole 74 is communicated with the heater groove 68; the cable 16 extends into the heater groove 68 through the wire inlet hole 74, the cable 16 electrically connects the tubular heater with the control device 76, and the control device 76 controls the heating temperature of the tubular heater; the extrusion part 50 comprises a cylindrical part 96 and an inverted cone part 86, the circular truncated cone sleeve 14 is sleeved outside the cylindrical part 96, the inverted cone sleeve 84 is sleeved outside the inverted cone part 86, a first gap is defined between the inner wall surface 94 of the circular truncated cone sleeve 14 and the outer wall surface of the cylindrical part 96, a second gap 118 is defined between the inner wall surface 98 of the inverted cone sleeve 84 and the outer wall surface 86 of the inverted cone part 86, and the first gap and the second gap are communicated with each other; the outer wall surface of the circular truncated cone sleeve 14 is provided with a hot air inlet 120 communicated with the first gap, and the outer wall surface of the inverted circular truncated cone sleeve 84 is provided with a cooling air channel 106 communicated with the second gap.
The inner wall of the feeding cylinder 48 is provided with internal threads, the outer wall of the extruding part 50 is provided with external threads, and the feeding cylinder 48 and the extruding part 50 are connected together through the internal threads and the external threads.
The diameter of the first feeding pipe 52 is larger than that of the second feeding pipe 62.
The heater pocket 68 is provided with a total of three heater pockets 68, which are evenly spaced 120 degrees apart.
When the 3D printing device works, firstly, the printing materials in the feeding cylinder are extruded into the first feeding pipe 52 and the second feeding pipe 62 by the feeding screw 54, the heating temperature of the tubular heater is controlled by the control device 76, the printing materials are heated to be in a fluid state and are extruded out through the second feeding pipe 62, and the printing materials are overlapped layer by layer to form the planting guide plate. Meanwhile, cooling gas (inert gas or nitrogen) is introduced into the second gap in the inverted cone sleeve 84 through the cooling gas channel 106, flows out from the bottom of the second gap and is directly sprayed onto the printing material which is just extruded from the second material passing pipe 62, so that the cooling speed of each layer of the printing material is basically the same, cracks are prevented from being formed among layers, local warping of the whole planting guide plate is eliminated, and the processing precision of the planting guide plate is improved.
When the portion where the guide hole 204 is bonded to the substrate 202 is printed, the supply of the cooling gas from the cooling gas passage 106 to the second gap in the inverted conical sleeve 84 is stopped. Hot air is introduced into the first gap of the circular truncated cone sleeve 14 through the hot air inlet 120, the temperature of the hot air is 50-80 ℃ lower than the heating temperature of the tubular heater, the hot air sequentially passes through the first gap and the second gap, flows out from the bottom of the second gap, and is sprayed to the position where the guide hole 204 is combined with the substrate 202, so that the combined position is immersed in the atmosphere of the hot air for at least 40 minutes to eliminate stress.
When the top edge of the guide hole 204 is printed, the hot air supply from the hot air inlet 120 to the first gap of the circular truncated cone sleeve 14 is stopped. Cryogenic gas is introduced into the second gap in inverted conical sleeve 84 through cooling gas passage 106. The low-temperature gas is 80-100 ℃ lower than the cooling gas, and the low-temperature gas rapidly cools the top edge of the guide hole 204, so that the top edge of the guide hole 204 is quenched, the guide hole is high in hardness, the guide hole is prevented from being broken due to collision of a cutter, and the cutter is prevented from being deviated.
The invention also provides a manufacturing method of the 3d printing planting guide plate, which comprises the following steps:
the method comprises the following steps of firstly, data acquisition:
the patient shoots the CBCT and obtains imaging data;
the patient carries out oral true color scanning and obtains an intraoral three-dimensional scanning picture;
step two, data processing:
transmitting the imaging data and the intraoral three-dimensional scanning picture to the planting guide plate software;
matching the imaging data with the intraoral three-dimensional scanning picture, performing three-dimensional reconstruction, and determining the position of the upper structure of the implant;
marking an important anatomical structure, determining the model and the position of an implant, drawing the edge of an implant guide plate and generating a guide plate file in an STL format;
and step three, completing 3D printing:
and transmitting the guide plate file data in the STL format into the 3D printing device to finish 3D printing.
After 3D printing is completed, the manufactured planting guide plate is required to be worn in the mouth of a patient, and planting operation is performed again without problems. And after the planting is finished, performing the CBCT again, and observing the postoperative repairing effect.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims (2)

1. The utility model provides a 3D printing device, the device is used for printing planting board preparation, characterized by: the printing head comprises a feeding cylinder, an extrusion part, a circular truncated cone sleeve and an inverted cone sleeve, wherein the feeding cylinder is connected with the extrusion part through threads; a first feeding pipe, a second feeding pipe and a plurality of heater grooves which are axially communicated are arranged in the extrusion part, and the plurality of heater grooves are arranged along the circumferential direction of the first feeding pipe and the second feeding pipe; a tubular heater is vertically arranged in each heater groove; a feeding screw is arranged in the feeding cylinder and used for extruding the printing material in the feeding cylinder into the first material passing pipe and extruding the printing material through the second material passing pipe; the side wall of the extrusion part is provided with a wire inlet hole which is communicated with the heater groove; the cable extends into the heater groove through the wire inlet hole, the tubular heater is electrically connected with the control device through the cable, and the heating temperature of the tubular heater is controlled by the control device; the extrusion part comprises a cylindrical part and an inverted cone part, the circular truncated cone sleeve is sleeved outside the cylindrical part, the inverted cone sleeve is sleeved outside the inverted cone part, a first gap is defined between the inner wall surface of the circular truncated cone sleeve and the outer wall surface of the cylindrical part, a second gap is defined between the inner wall surface of the inverted cone sleeve and the outer wall surface of the inverted cone part, and the first gap and the second gap are communicated with each other; the outer wall surface of the circular truncated cone sleeve is provided with a hot air inlet communicated with the first gap, and the outer wall surface of the inverted circular truncated cone sleeve is provided with a cooling gas channel communicated with the second gap; the inner wall of the feeding cylinder is provided with internal threads, the outer wall of the extrusion part is provided with external threads, and the feeding cylinder and the extrusion part are connected together through the internal threads and the external threads; the diameter of the first material passing pipe is larger than that of the second material passing pipe; the heater grooves are provided with three heater grooves which are uniformly arranged at intervals of 120 degrees.
2. A3 d printing planting guide plate manufacturing method is characterized by comprising the following steps:
the method comprises the following steps of firstly, data acquisition:
the patient shoots an oral CBCT, and intraoral soft and hard tissue imaging data are generated through the CBCT;
the oral cavity true color scanner obtains intraoral three-dimensional digital image data, a probe of the oral cavity scanner is inserted into the oral cavity of a patient, the intraoral tissue is scanned, and the scanning result generates intraoral soft and hard tissue three-dimensional digital image data;
step two, data processing:
transmitting the intraoral imaging data obtained by CBCT and intraoral three-dimensional scanning pictures obtained by a true color scanner to the planting guide plate software;
matching the intraoral iconography data and the intraoral three-dimensional scanning picture through the implant guide plate software, performing three-dimensional reconstruction, overlapping the iconography data of intraoral soft and hard tissues and the image data by taking key anatomical marks as a standard, and establishing an oral three-dimensional digital model after the three-dimensional reconstruction;
analyzing the width and height of the alveolar bone through type analysis, measurement and calculation, and determining the position of the upper structure of the implant;
determining the model and the position of the implant on the three-dimensional model by marking the position of the important anatomical structure of the neural tube;
determining the position of the implant guide plate and the position depth of the guide hole according to the model and the placement position of the implant through the analysis of implant guide plate software, and drawing the edge of the implant guide plate;
completing the three-dimensional model of the planting guide plate, and generating a guide plate file in an STL format;
and step three, completing 3D printing:
and (3) transmitting the guide plate file data in the STL format into the 3D printing device according to claim 1 to finish 3D printing.
CN202010440563.8A 2020-05-22 2020-05-22 3d printing planting guide plate manufacturing device and method Expired - Fee Related CN111590878B (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003017862A2 (en) * 2001-08-31 2003-03-06 Leonard Marotta Stable dental analog systems
WO2011157762A3 (en) * 2010-06-15 2012-02-23 Materialise Dental Nv Custom healing cap for dental implantology and method for design and manufacturing thereof
CN104382661A (en) * 2014-11-25 2015-03-04 深圳市康泰健牙科器材有限公司 Manufacturing method and system of digitized 3D implanting guide plate
CN206030553U (en) * 2016-09-18 2017-03-22 三威实业（珠海）有限公司 Hot mouth of second grade heating and adopt this hot mouth increase material formula 3D printer with hot -blast structure
CN206856014U (en) * 2017-05-03 2018-01-09 沈阳三迪度维科技有限公司 A kind of 3D printer cooling nozzles

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003017862A2 (en) * 2001-08-31 2003-03-06 Leonard Marotta Stable dental analog systems
WO2011157762A3 (en) * 2010-06-15 2012-02-23 Materialise Dental Nv Custom healing cap for dental implantology and method for design and manufacturing thereof
CN104382661A (en) * 2014-11-25 2015-03-04 深圳市康泰健牙科器材有限公司 Manufacturing method and system of digitized 3D implanting guide plate
CN206030553U (en) * 2016-09-18 2017-03-22 三威实业（珠海）有限公司 Hot mouth of second grade heating and adopt this hot mouth increase material formula 3D printer with hot -blast structure
CN206856014U (en) * 2017-05-03 2018-01-09 沈阳三迪度维科技有限公司 A kind of 3D printer cooling nozzles

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