CN109394364B - Novel 3D printing movable denture support manufacturing process - Google Patents
Novel 3D printing movable denture support manufacturing process Download PDFInfo
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- CN109394364B CN109394364B CN201811266811.0A CN201811266811A CN109394364B CN 109394364 B CN109394364 B CN 109394364B CN 201811266811 A CN201811266811 A CN 201811266811A CN 109394364 B CN109394364 B CN 109394364B
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- 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
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Abstract
The invention discloses a manufacturing process of a novel 3D printing removable denture support, which comprises the following steps: checking the model to see whether the model is intact or not; manufacturing a model, namely cleaning a silica gel tray with water, drying the silica gel tray by using an air gun, and filling gypsum into the tray; scanning the model, fixing the model by wax, occluding up and down, putting the model into a 3shape scanning cabin, and starting a scanning program to scan the model; CAD design, wherein CAD designers design the bracket of the oral scanning data; 3D support printing, wherein a 3D printing center worker reasonably has no deformation to the designed support typesetting angle, and printing materials of titanium powder or cobalt chromium powder are placed in a printing bin for printing; and (4) post-processing, namely after printing, releasing sintering stress at the temperature of 830 ℃ pure titanium and 1050 ℃ cobalt-chromium alloy, cooling, and removing an oxide layer on the surface of the casting by using a sand blasting machine. The invention reduces the material cost and the labor cost, greatly reduces the rework rate and ensures that the removable denture bracket is more precise.
Description
Technical Field
The invention relates to the technical field of 3D printing, in particular to a manufacturing process of a novel 3D printing removable denture framework.
Background
The manufacturing process of the traditional removable denture bracket comprises the following steps:
1. manufacturing a model, namely cleaning a silica gel tray with water and drying the silica gel tray by using an air gun, mixing gypsum by using a vacuum stirrer, pouring the gypsum into the tray, removing bubbles in the tray by using a vibrator, waiting for 30 minutes until the gypsum is completely solidified, and flattening the bottom of the gypsum model by using a gypsum finisher; 2, determining a positioning channel, designing the position of the clamping ring by using an observation instrument, determining an undercut area, and filling the undercut area at the position of the clamping ring by using anhydrite; 3. the plaster mold filled with the undercut is placed in a mold recovery box, agar boiled in an agar machine is filled in the mold recovery box, and the plaster mold is taken out after the agar is completely solidified for 30 minutes; 4, fixing, pouring the agar mould into a phosphate embedding material to copy a phosphate model, and after 30 minutes, completely curing the model and then carrying out hardening treatment (after soaking a phosphate hardening agent, putting the model into an oven and baking the model); 5. the method comprises the following steps of (1) wax pattern manufacturing, wherein a wax adhesive is coated on a phosphate model, snap ring wax and a thin wax sheet are bonded on the phosphate model according to design, the wax pattern is described on an auxiliary model according to a design drawing and an observation line condition provided by a doctor, the wax pattern is manufactured according to the design drawing strictly, the wax pattern is smooth, light and attractive in design line, the thickness of the wax pattern meets the standard requirement, and the position of a snap ring is designed reasonably; 6. embedding, inserting the prepared wax pattern into a lead, removing oil stains on the surface of the wax pattern by using a wax pattern cleaning agent, and embedding the wax pattern in a casting ring. The embedding material liquid is strictly mixed according to the water-powder ratio specified by the manufacturer, then a vacuum stirrer is used for 60s, and after 30 minutes, the embedding material is completely solidified; 7. casting, namely putting the casting ring into a muffle furnace for dewaxing and baking treatment (when dewaxing, the temperature of the high-temperature muffle furnace is adjusted to 300 ℃ and baked for 30 minutes, then continuously heating to 900 ℃, keeping the temperature for 45-60 minutes when the final temperature is 900 ℃), putting the crucible and metal used in casting into the muffle furnace for preheating, opening a vacuum pressure casting machine, putting the preheated crucible and metal into the vacuum pressure casting machine, putting the casting ring into the muffle furnace for casting, opening the cast ring after casting, taking out a casting, removing embedded materials and an oxide layer on the surface of the casting by using a sand blasting machine, and cutting a wire connected with the casting by using a metal cutting machine; 8. and (3) polishing, opening the cast ring, taking out the casting, removing the embedded material and the oxide layer on the surface of the casting by using a sand blasting machine, and cutting the lead connected with the casting by using a metal cutting machine. And (3) grinding the surface of the casting and the redundant part of the clamping ring by using a machine needle or a grinding head, measuring the thickness of the substrate by using a caliper, completely positioning the tried casting on the plaster model abutment, primarily polishing the base and the clamping ring by using a polishing wheel and a polishing rod, and finally polishing by dipping polishing paste on a polishing cloth wheel.
The traditional process has the following defects:
1. the traditional process is artificial, so that the data is not accurate enough, the accuracy of the data cannot be ensured when the removable denture support is manufactured, errors exist in the held removable denture support, and the comfort level of a patient is not high.
The traditional process needs a large amount of time for manufacturing, the used materials are more, the rework rate of the manufactured removable denture support is higher, the cost of labor and materials is high, the rework rate of the manufactured removable denture support is higher, and the working efficiency is low.
Disclosure of Invention
The invention aims to provide a novel manufacturing process of a 3D printing removable denture framework, and aims to solve the problems that the traditional process manufacturing provided in the background technology is artificial, so that the data is not accurate enough, the accuracy of the data cannot be ensured when the removable denture framework is manufactured, the manufactured removable denture framework has errors, the comfort of a patient is not high, the traditional process manufacturing needs a large amount of time, the used materials are more, the reworking rate of the manufactured removable denture framework is higher, the cost of the manpower and the materials is high, the reworking rate of the manufactured removable denture framework is higher, and the working efficiency is low.
In order to achieve the purpose, the invention provides the following technical scheme: a manufacturing process of a novel 3D printing removable denture support comprises the following steps:
step S1: the model is inspected, whether the model is intact or not, whether accessories are complete or not, whether the occlusion space is enough or not, whether good common in-place channels exist or not and the like are checked, so that the model is ensured to meet the manufacturing requirement;
step S2: manufacturing a model, namely cleaning a silica gel tray with water and drying the silica gel tray by using an air gun, mixing gypsum by using a vacuum stirrer, pouring the gypsum into the tray, waiting for 30 minutes until the gypsum is completely solidified, and trimming the bottom of the gypsum model by using a gypsum trimming machine;
step S3: scanning the model, fixing the model by wax, occluding up and down, putting the model into a 3shape scanning cabin, and starting a scanning program to scan the model;
step S4: CAD design, wherein a CAD designer designs a bracket for oral scanning data, designs the bracket on a model according to a design drawing and an observation line condition provided by a doctor, designs the bracket strictly according to the design drawing, reasonably designs the position of a snap ring, stores data and transmits the data to a 3D printing center;
step S5: 3D support printing, wherein a 3D printing center worker reasonably has no deformation to the designed support typesetting angle, and printing materials of titanium powder or cobalt chromium powder are placed in a printing bin for printing;
step S6: and (3) post-processing, after printing, sintering stress release is carried out, the stress release temperature is 830 ℃ pure titanium, the cobalt-chromium alloy is 1050 ℃, after cooling, an oxide layer on the surface of the casting is removed by a sand blasting machine, a supporting rod of the connecting support is removed, then the surface of the casting and the redundant part of the clamping ring are ground by a machine needle or a grinding head, the thickness of the base plate is measured by a caliper, the casting after being tried is completely put in place on the abutment of the plaster model, then the base and the clamping ring are preliminarily polished by a polishing wheel and a polishing rod, and finally polished by a polishing cloth wheel.
Further, in step S1, the edges of the silica gel impression and the plaster model need to be checked to ensure whether the edges of the silica gel impression and the plaster model are clear, and the silica gel impression and the plaster model with blurred edges need to be repaired or replaced to ensure that the model meets the manufacturing requirements.
Further, in step S2, a vibrator is used to remove the air bubbles in the tray, so that the air bubbles in the gypsum are completely removed, and the gypsum is completely solidified after waiting for 30 minutes.
Further, before using the scanner in step S3, the protection head needs to be removed and replaced with the sterilized scanning head.
Furthermore, when the CAD is drawn in the step S4, smooth, light and beautiful lines of the bracket design need to be ensured, and the thickness of the bracket meets the standard requirement, so that the 3D printing removable denture bracket is more precise.
Furthermore, the designed size in step S4 is that the full support thickness is more than or equal to 0.5mm, the tongue palate rod thickness is more than or equal to 1.0mm, the tongue plate thickness is 0.8mm-1.0mm, and the tongue rod thickness is more than or equal to 1.8 mm.
Further, in step S5, titanium powder or cobalt chromium powder is placed with gloves, and high temperature, open fire or contact with other substances are avoided.
By adopting the method, the process has the advantages that the time for manufacturing the removable denture support is short, the whole process is subjected to digital processing, the data is more accurate, the material cost and the labor cost are greatly reduced, the rework rate is greatly reduced, and the working efficiency and the comfort level and the satisfaction degree of a patient are improved.
Drawings
Fig. 1 is a flow chart of a manufacturing process of a novel 3D printing removable denture framework according to the present invention;
fig. 2 is a schematic diagram showing the comparison between the manufacturing process of the novel 3D-printed removable denture framework and the conventional removable denture framework.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1-2, the present invention provides a technical solution: a manufacturing process of a novel 3D printing removable denture support comprises the following steps:
step S1: the model is inspected, whether the model is intact or not, whether accessories are complete or not, whether the occlusion space is enough or not, whether good common in-place channels exist or not and the like are checked, so that the model is ensured to meet the manufacturing requirement;
step S2: manufacturing a model, namely cleaning a silica gel tray with water and drying the silica gel tray by using an air gun, mixing gypsum by using a vacuum stirrer, pouring the gypsum into the tray, waiting for 30 minutes until the gypsum is completely solidified, and trimming the bottom of the gypsum model by using a gypsum trimming machine;
step S3: scanning the model, fixing the model by wax, occluding up and down, putting the model into a 3shape scanning cabin, and starting a scanning program to scan the model;
step S4: CAD design, wherein a CAD designer designs a bracket for oral scanning data, designs the bracket on a model according to a design drawing and an observation line condition provided by a doctor, designs the bracket strictly according to the design drawing, reasonably designs the position of a snap ring, stores data and transmits the data to a 3D printing center;
step S5: 3D support printing, wherein a 3D printing center worker reasonably has no deformation to the designed support typesetting angle, and printing materials of titanium powder or cobalt chromium powder are placed in a printing bin for printing;
step S6: and (3) post-processing, after printing, sintering stress release is carried out, the stress release temperature is 830 ℃ pure titanium, the cobalt-chromium alloy is 1050 ℃, after cooling, an oxide layer on the surface of the casting is removed by a sand blasting machine, a supporting rod of the connecting support is removed, then the surface of the casting and the redundant part of the clamping ring are ground by a machine needle or a grinding head, the thickness of the base plate is measured by a caliper, the casting after being tried is completely put in place on the abutment of the plaster model, then the base and the clamping ring are preliminarily polished by a polishing wheel and a polishing rod, and finally polished by a polishing cloth wheel.
In the invention, in step S1, the edges of the silica gel impression and the gypsum model need to be checked to ensure whether the edges of the silica gel impression and the gypsum model are clear, and the silica gel impression and the gypsum model with fuzzy edges need to be repaired or replaced to ensure that the model meets the manufacturing requirements;
in the invention, in step S2, a vibrator is used to remove the bubbles in the tray, so that the bubbles in the gypsum are completely discharged, and the gypsum is completely solidified after 30 minutes;
in the present invention, before using the scanner in step S3, the protection head needs to be removed and the sterilized scanning head needs to be replaced;
in the invention, when the CAD is drawn in the step S4, the smooth, light and beautiful design line of the bracket needs to be ensured, the thickness of the bracket meets the standard requirement, and the 3D printing removable denture bracket is more precise;
in the invention, the designed size in the step S4 is that the full support thickness is more than or equal to 0.5mm, the tongue palate rod thickness is more than or equal to 1.0mm, the tongue plate thickness is 0.8mm-1.0mm, and the tongue rod thickness is more than or equal to 1.8 mm;
in the present invention, in step S5, titanium powder or cobalt chromium powder needs to be placed with gloves, and the situation of high temperature, open fire or contact with other substances is avoided.
The movable denture bracket is manufactured by the process, so that the data is more accurate, the material cost and the labor cost are greatly reduced as shown in figure 2, the rework rate is greatly reduced, and the comfort level and the satisfaction degree of a patient are improved.
Example 2
Referring to fig. 1-2, the present invention provides a technical solution: a manufacturing process of a novel 3D printing removable denture support comprises the following steps:
step S1: the model is inspected, whether the model is intact and undamaged or not, whether accessories are complete or not, whether the edges of the silica gel impression and the plaster model are clear or not, whether the occlusion space is enough or not, whether good common in-place channels exist or not and the like are checked, so that the model is ensured to meet the manufacturing requirements;
step S2: making a model, namely, after receiving the gypsum model, collecting the gypsum model;
step S3: scanning the model, fixing the model by wax, occluding up and down, putting the model into a 3shape scanning cabin, and starting a scanning program to scan the model;
step S4: CAD design, CAD designers design supports for oral cavity scanning data, design on models according to design drawings and observation line conditions provided by doctors, the supports are designed strictly according to the design drawings, the support design lines are smooth, light and attractive, the thickness of the supports meets the standard requirements, and the positions of the snap rings are reasonably designed. (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 0.8mm-1.0mm, and the thickness of the tongue rod is more than or equal to 1.8 mm) data are stored, and the data are transmitted to a 3D printing center;
step S5: 3D support printing, wherein a 3D printing center worker reasonably has no deformation to the designed support typesetting angle, and printing materials of titanium powder or cobalt chromium powder are placed in a printing bin for printing;
step S6: and (3) post-processing, after printing, sintering stress release is carried out, the stress release temperature is 830 ℃ pure titanium, the cobalt-chromium alloy is 1050 ℃, after cooling, an oxide layer on the surface of the casting is removed by a sand blasting machine, a supporting rod of the connecting support is removed, then the surface of the casting and the redundant part of the clamping ring are ground by a machine needle or a grinding head, the thickness of the base plate is measured by a caliper, the casting after being tried is completely put in place on the abutment of the plaster model, then the base and the clamping ring are preliminarily polished by a polishing wheel and a polishing rod, and finally polished by a polishing cloth wheel.
In the invention, in step S1, the edges of the silica gel impression and the gypsum model need to be checked to ensure whether the edges of the silica gel impression and the gypsum model are clear, and the silica gel impression and the gypsum model with fuzzy edges need to be repaired or replaced to ensure that the model meets the manufacturing requirements;
in the present invention, before using the scanner in step S3, the protection head needs to be removed and the sterilized scanning head needs to be replaced;
in the invention, when the CAD is drawn in the step S4, the smooth, light and beautiful design line of the bracket needs to be ensured, the thickness of the bracket meets the standard requirement, and the 3D printing removable denture bracket is more precise;
in the invention, the designed size in the step S4 is that the full support thickness is more than or equal to 0.5mm, the tongue palate rod thickness is more than or equal to 1.0mm, the tongue plate thickness is 0.8mm-1.0mm, and the tongue rod thickness is more than or equal to 1.8 mm;
in the present invention, in step S5, titanium powder or cobalt chromium powder needs to be placed with gloves, and the situation of high temperature, open fire or contact with other substances is avoided.
The movable denture bracket is manufactured by the process, so that the data is more accurate, the material cost and the labor cost are greatly reduced as shown in figure 2, the rework rate is greatly reduced, and the comfort level and the satisfaction degree of a patient are improved.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
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 (5)
1. A manufacturing process of a novel 3D printing removable denture support comprises the following steps:
step S1: the model is inspected, whether the model is intact or not, whether accessories are complete or not, whether the occlusion space is enough or not, whether good common in-place channels exist or not and the like are checked, so that the model is ensured to meet the manufacturing requirement;
step S2: manufacturing a model, namely cleaning a silica gel tray with water and drying the silica gel tray by using an air gun, mixing gypsum by using a vacuum stirrer, pouring the gypsum into the tray, waiting for 30 minutes until the gypsum is completely solidified, and trimming the bottom of the gypsum model by using a gypsum trimming machine;
step S3: scanning the model, fixing the model by wax, occluding up and down, putting the model into a 3shape scanning cabin, and starting a scanning program to scan the model;
step S4: CAD design, wherein a CAD designer designs a bracket for oral scanning data, designs the bracket on a model according to a design drawing and an observation line condition provided by a doctor, designs the bracket strictly according to the design drawing, reasonably designs the position of a snap ring, stores data and transmits the data to a 3D printing center;
step S5: 3D support printing, wherein a 3D printing center worker reasonably has no deformation to the designed support typesetting angle, and printing materials of titanium powder or cobalt chromium powder are placed in a printing bin for printing;
step S6: post-processing, after printing, sintering stress release is carried out, the stress release temperature is 830 ℃ pure titanium and 1050 ℃ cobalt chromium alloy, after cooling, an oxide layer on the surface of the casting is removed by a sand blasting machine, a supporting rod connected with a support is removed, then the surface of the casting and the redundant part of the clamping ring are polished by a needle or a grinding head, the thickness of the base plate is measured by a caliper, the tried casting is completely put in place on a plaster model abutment, then the base and the clamping ring are preliminarily polished by a polishing wheel and a polishing rod, and finally polished by a polishing cloth wheel dipped with polishing paste to obtain a finished product;
in step S1, the edges of the silica gel impression and the gypsum model need to be checked to ensure whether the edges of the silica gel impression and the gypsum model are clear, and the silica gel impression and the gypsum model with blurred edges need to be repaired or replaced to ensure that the model meets the manufacturing requirements; in step S2, a vibrator is used to remove the air bubbles in the tray, so that the air bubbles in the gypsum are completely removed, and the gypsum is completely solidified after 30 minutes.
2. The manufacturing process of the novel 3D printing removable denture framework according to claim 1, characterized in that: before using the scanner in step S3, the protective head needs to be removed and the sterilized scanning head needs to be replaced.
3. The manufacturing process of the novel 3D printing removable denture framework according to claim 1, characterized in that: when the CAD is drawn in the step S4, the smooth, light and beautiful design lines of the bracket need to be ensured, and the thickness of the bracket meets the standard requirement, so that the 3D printing removable denture bracket is more precise.
4. The manufacturing process of the novel 3D printing removable denture framework according to claim 1, characterized in that: the designed size in the step S4 is 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 0.8mm-1.0mm, and the thickness of the tongue rod is more than or equal to 1.8 mm.
5. The manufacturing process of the novel 3D printing removable denture framework according to claim 1, characterized in that: in step S5, titanium powder or cobalt chromium powder is placed with gloves, and high temperature, open fire or contact with other substances are avoided.
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| CN110227823A (en) * | 2019-06-29 | 2019-09-13 | 内蒙古科峰智能科技有限公司 | Treatment process for 3D printing product |
| CN112741700A (en) * | 2020-12-21 | 2021-05-04 | 北京圣爱吉友和义齿制作有限公司 | Injection molding process for denture base |
| CN112972029B (en) * | 2020-12-24 | 2022-06-14 | 青岛东和义齿制作有限公司 | Oral cavity digital bracket all-ceramic combined repairing method for removable denture |
| CN113693753B (en) * | 2021-08-23 | 2022-10-18 | 上海六普医疗科技有限公司 | Simulated full-color transparent full-porcelain tooth 3D printing method |
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Denomination of invention: Fabrication process of a new 3D printing removable denture bracket Effective date of registration: 20220922 Granted publication date: 20210713 Pledgee: Linshang Bank Co.,Ltd. Rizhao Branch Pledgor: SHANDONG MAIER MEDICAL TECHNOLOGY Co.,Ltd. Registration number: Y2022980015813 |