CN112741700A - Injection molding process for denture base - Google Patents
Injection molding process for denture base Download PDFInfo
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- CN112741700A CN112741700A CN202011519767.7A CN202011519767A CN112741700A CN 112741700 A CN112741700 A CN 112741700A CN 202011519767 A CN202011519767 A CN 202011519767A CN 112741700 A CN112741700 A CN 112741700A
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- China
- Prior art keywords
- silicon rubber
- denture base
- injection molding
- molding process
- silicone rubber
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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
- A61C13/01—Palates or other bases or supports for the artificial teeth; Making same
-
- 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
- A61C13/0025—Linings
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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
- B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/753—Medical equipment; Accessories therefor
- B29L2031/7532—Artificial members, protheses
- B29L2031/7536—Artificial teeth
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- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Dentistry (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Dental Prosthetics (AREA)
Abstract
The application relates to the field of cavity denture bases, in particular to a denture base injection molding process, which comprises the following steps: s1, checking and confirming the dental model to be made; s2: taking and manufacturing a proper amount of silicon rubber, and then coating the silicon rubber on the artificial tooth mold; s3: standing, and hardening and shaping the silicon rubber; s4: correcting the shaped silicon rubber; s5: arranging a glue injection port on the silicon rubber; s6: and processing and shaping the denture base. The denture base has the effect of improving the discomfort caused by the long-time contact between the denture base and the oral cavity of a person.
Description
Technical Field
The application relates to the field of cavity denture bases, in particular to a denture base injection molding process.
Background
The denture base is a part of removable partial denture to connect the artificial tooth with the denture. The base is covered on the alveolar ridge of the missing tooth, can connect all parts of the false tooth into a whole, is a base for arranging the artificial teeth, and uniformly transmits the force born by the artificial teeth to the bracket on the oral tissue. Is made of metal and/or resin.
The denture base is usually lined with a soft lining material on the base, the most common denture soft lining material on the market at present and the most clinically applied denture soft lining material is acrylic soft plastic and silicon rubber material, and the inventor finds that the prior art has the following defects: the acrylate soft plastic and the resin base body can form strong adhesion, but the material loses elasticity and becomes hard in a watery environment for a long time, so that the service life is shortened; the elasticity of the silicone rubber cushioning material is a characteristic inherent to the material itself, and can provide good elasticity for a long period of time, but the adhesion between the silicone rubber cushioning material and the resin base body is poor.
Dentures, commonly known as dentures, are artificial teeth that can replace missing natural teeth and are used to restore the integrity and physiological functions of dentition. The typical denture is a complete denture that attaches an artificial dentition to a base. Since the base of such a denture is very hard, it may be uncomfortable to contact with soft tissues in the mouth of a person for a long time, which may cause pain, and even may be unwilling to wear.
Disclosure of Invention
In order to improve the discomfort caused after the denture base is contacted with the oral cavity of a human body for a long time, the application provides a denture base injection molding process.
The application provides a denture base injection moulding technology, adopts following technical scheme:
the injection molding process of the denture base is characterized by comprising the following steps: the method comprises the following steps:
s1, checking and confirming the dental model to be made;
s2: taking and manufacturing a proper amount of silicon rubber, and then coating the silicon rubber on the artificial tooth mold;
s3: standing, and hardening and shaping the silicon rubber;
s4: correcting the shaped silicon rubber;
s5: arranging a glue injection port on the silicon rubber;
s6: and processing and shaping the denture base.
By adopting the technical scheme, the denture base injection molding process adopted by the application has the advantages that the process of dental model processing is smoother, the complicated operation process is saved, the processing efficiency is improved, and the denture base produced by adopting the process flow effectively improves the discomfort generated after the denture base is in long-time contact with the oral cavity of a person.
Optionally, in step S1, it is checked whether the dental model to be processed is consistent with the design list.
By adopting the technical scheme, before preparing to process the dental cast, whether the requirements on the design list to be processed are consistent or not is confirmed, and the mismatching between the dental cast produced and processed and the actual needs and the waste of resources caused by the negligence of workers are avoided.
Optionally, in step S2, a proper amount of catalyst is added to the manufactured silicone rubber, and after the processing is completed, the silicone rubber is coated on the artificial tooth mold, so that the artificial tooth and the wax base can be coated by the silicone rubber.
By adopting the technical scheme, a proper amount of catalyst is added, the added catalyst can accelerate the reaction of the silicon rubber, the silicon rubber is repeatedly kneaded after the addition is completed until the color of the silicon rubber is uniform, then the kneaded silicon rubber is bent to a certain radian by a worker and placed on the forehead surface of the artificial tooth, and the artificial tooth and the wax base support are completely wrapped in the silicon rubber by spreading the palm to the lingual side, and when the silicon rubber is wrapped on the dental model, the force is uniform, so that the thickness of the silicon rubber is consistent, and the artificial tooth and the wax base support are required to be completely wrapped in the silicon rubber.
Optionally, in step S3, the coated silicone rubber is shaped in step S2, and the molded silicone rubber is inspected for the inner forehead surface.
By adopting the technical scheme, a worker needs to perform quality inspection on the inner forehead surface of the silicon rubber to check whether the gum is clear or not and whether the edge of the wax base support is complete or not, and determine the place without damage.
Optionally, in step S4, the silicone rubber removed from the artificial tooth is trimmed.
By adopting the technical scheme, the removed dental model is repaired by using a scalpel, in the repairing process, attention is paid to that the silicon rubber covers at least half of the abutment, the wax base support is required to be completely covered at a position 2-3 mm away from the edge of the wax base support, and then the excessive silicon rubber is cut off.
Optionally, in step S5, a rubber injection port communicated with the inside of the silicone rubber is formed on the tongue side of the silicone rubber, and a pair of exhaust ports are symmetrically formed on both sides of the lip and the cheek of the silicone rubber.
Through adopting above-mentioned technical scheme, in glue injection mouth and the gas vent of seting up made things convenient for the staff to be full of the silicon rubber with glue, the injection in-process, until the glue solution from the gas vent discharge can.
Optionally, in step S6, removing the artificial tooth from the working model, and removing the wax from the working model with boiling water; the taken artificial tooth is processed by steam and firmly bonded with the silicon rubber; the silicone rubber was remounted to the working model.
Through adopting above-mentioned technical scheme, at the in-process of wasing work model and support, will separately wash work model and support to prevent that the support washs unclean, put into warm clear water with work model again and soak about 10 minutes, blow the air gun clean for work model and the silicon rubber that has done the hole again, at the in-process of clearance silicon rubber, prevent that silicon rubber time and other impurity exist in the silicon rubber.
Optionally, in step S6, a certain proportion of glue solution is prepared and filled into the silicone rubber through an injector.
By adopting the technical scheme, the prepared glue solution is filled into the silicon rubber so as to be processed into the denture base.
Optionally, in step S6, the working model and the silicone rubber filled with the glue solution are placed into an injection molding pot for processing and shaping.
By adopting the technical scheme, the silicone rubber filled with the glue solution and the working model are placed into the injection molding pot, so that the shaping of the solution injected into the silicone rubber can be accelerated.
Optionally, in step S6, excess glue on the work model at the glue injection port and the air exhaust port is ground.
By adopting the technical scheme, the redundant solution generated by injecting the silicone rubber is removed, and the subsequent use is prevented from being influenced.
Drawings
Fig. 1 is a flowchart of an embodiment of the present application.
Detailed Description
The present application is described in further detail below with reference to fig. 1.
The embodiment of the application discloses a denture base injection molding process, which comprises the following steps:
s1: checking and confirming a dental model to be manufactured;
before preparing the dental model to be processed, whether the requirements on the design list to be processed are consistent or not is confirmed, and the problem that the dental model to be processed is not matched with the actual requirements due to negligence of workers, so that the waste of resources is caused is avoided.
S2, taking and manufacturing a proper amount of silicon rubber, and then coating the silicon rubber on the artificial tooth model;
the method comprises the following steps that a worker firstly takes a proper amount of silicon rubber, a proper amount of catalyst is added, the added catalyst can accelerate the reaction of the silicon rubber, the silicon rubber is repeatedly kneaded after the addition is completed until the color of the silicon rubber is uniform, then the worker bends the kneaded silicon rubber into a certain radian and puts the radian on the forehead surface of an artificial tooth, the artificial tooth and a wax base support are spread to the tongue frequency side by a palm, when the silicon rubber is coated on a tooth mold, the force is uniform, the thickness of the silicon rubber is consistent, and the artificial tooth and the wax base support are completely coated in the silicon rubber.
S3: standing, and hardening and shaping the silicon rubber;
after the silicon rubber is completely coated on the dental model, standing for 5-8 minutes to completely harden the silicon rubber and then taking off the silicon rubber, in the process of taking off the silicon rubber, the silicon rubber is gently taken from a plurality of angles to prevent the silicon rubber from deforming and breaking, after the silicon rubber is taken off from the dental model, a worker needs to perform quality inspection on the inner forehead surface of the silicon rubber, check whether the gum is clear, check whether the edge of the wax base support is complete and determine the place without damage.
S4: correcting the shaped silicon rubber;
the removed dental model is repaired with a scalpel in step S3, taking care that the silicone rubber covers at least half of the abutment, the wax base must be completely covered 2-3 mm from the edge of the wax base, and then the excess silicone rubber is cut off.
S5: arranging a glue injection port on the silicon rubber;
the method comprises the steps of firstly, forming a glue injection opening communicated with the interior of the silicon rubber at the position, close to the middle of the wax base support, of the tongue side of the repaired silicon rubber by using a split drill, then symmetrically forming a pair of exhaust openings at the edge position, located on the lip and cheek side, of the silicon rubber by using the split drill, and expanding the glue injection opening at the formed glue injection opening and the exhaust openings by using a small pineapple drill to facilitate subsequent glue injection.
S6: processing and shaping the denture base;
the artificial teeth on the working model are taken down and placed in a tooth box to be stored, loss is prevented, the working model is placed in a three-layer net, boiling water is used for boiling for 2-3 minutes until the wax on the working model is completely purified, then the working model after the wax is removed is carefully cleaned by a steam engine until the working model is in a state without the wax and other impurities, in the process of cleaning the working model and the support, the working model and the support are cleaned separately to prevent the support from being cleaned unclean, then the working model is placed in warm clear water to be soaked for about 10 minutes, then the working model and the silicon rubber after the hole is drilled are blown clean by an air gun, and in the process of cleaning the silicon rubber, the silicon rubber and other impurities are prevented from being stored in the silicon rubber.
Placing the taken-down artificial tooth into a tooth net, boiling the artificial tooth for about one minute with boiled water, then blowing the artificial tooth clean with steam, punching a fixing groove on the back surface of the tooth with a small sand sheet, then placing the artificial tooth with the punched fixing groove into denture water for soaking for 3-5 seconds, taking out the artificial tooth, wiping the artificial tooth with toilet paper, then placing back the silicon rubber, and in the process of placing the artificial tooth back to the silicon rubber, dipping a little glue on the buccal surface of the tooth to ensure that the artificial tooth and the silicon rubber can be completely attached.
And drying the soaked working model by blowing, coating a separating agent on the surface of the working model, and preventing the separating agent from being coated too thickly in the process of drawing the separating agent.
The bracket is worn on the working model, the bracket and the working model are required to be tightly attached, then the silicon rubber is attached back to the working model, and the silicon rubber and the model are required to be completely attached tightly.
Then, mixing the following components in a glue solution ratio of 1: 1.7 mixing glue (pouring the measured injection water into a paper cup, pouring a proper amount of injection powder into the paper cup, stirring clockwise for about 20 seconds, sucking into an injector, and taking care to completely discharge bubbles in the injector to start injection molding).
After the glue is reacted and injected into the silica gel in the wire drawing period, the glue solution is uniformly forced until the air vent hole discharges the glue, and the injector is pulled out while pushing the glue to prevent air bubbles.
And (3) putting the work model filled with the glue into an injection molding pot, pressing the work model into the injection molding pot for 30 minutes (the water temperature is about 55 ℃, and the water in the pot is required to completely cover the model) under the pressure of 2.5-4P, removing the silica gel after the glue is solidified, and grinding the redundant glue at the glue inlet and the glue outlet.
And (4) putting the model back to the jaw frame again for checking jaw biting, taking down the false tooth for polishing after determining that the jaw biting is not wrong.
Polishing the dental model by using a 200-mesh polishing machine, brightening after polishing, and finally steaming and washing by using a steam engine to remove impurities on the dental model.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. The injection molding process of the denture base is characterized by comprising the following steps: the method comprises the following steps:
s1, checking and confirming the dental model to be made;
s2: taking and manufacturing a proper amount of silicon rubber, and then coating the silicon rubber on the artificial tooth mold;
s3: standing, and hardening and shaping the silicon rubber;
s4: correcting the shaped silicon rubber;
s5: arranging a glue injection port on the silicon rubber;
s6: and processing and shaping the denture base.
2. The denture base injection molding process according to claim 1, wherein: in step S1, it is checked whether the dental cast to be processed is consistent with the design sheet.
3. The denture base injection molding process according to claim 1, wherein: in the step S2, a proper amount of catalyst is added to the prepared silicone rubber, and after the processing is completed, the silicone rubber is coated on the artificial tooth mold, so that the silicone rubber can coat the artificial tooth and the wax base.
4. The denture base injection molding process according to claim 1, wherein: and step S3, the coated silicone rubber is shaped in step S2, and the molded silicone rubber is inspected for the inner forehead surface.
5. The denture base injection molding process according to claim 1, wherein: in step S4, the silicone rubber removed from the artificial tooth is trimmed.
6. The denture base injection molding process according to claim 1, wherein: in the step S5, a rubber injection port communicating with the interior of the silicone rubber is formed on the lingual side of the silicone rubber, and a pair of exhaust ports are symmetrically formed on both sides of the labial cheek of the silicone rubber.
7. The denture base injection molding process according to claim 1, wherein: in the step S6, taking down the artificial tooth on the working model, and removing the wax on the working model by using boiling water; the taken artificial tooth is processed by steam and firmly bonded with the silicon rubber; the silicone rubber was remounted to the working model.
8. The denture base injection molding process according to claim 1, wherein: in the step S6, a certain proportion of glue solution is prepared and filled into the silicone rubber through an injector.
9. The denture base injection molding process according to claim 1, wherein: and in the step S6, the working model and the silicon rubber filled with the glue solution are placed into an injection molding pot for processing and shaping.
10. The denture base injection molding process according to claim 1, wherein: in the step S6, the excess glue at the glue injection port and the air exhaust port on the work model is ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011519767.7A CN112741700A (en) | 2020-12-21 | 2020-12-21 | Injection molding process for denture base |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011519767.7A CN112741700A (en) | 2020-12-21 | 2020-12-21 | Injection molding process for denture base |
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| CN112741700A true CN112741700A (en) | 2021-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011519767.7A Pending CN112741700A (en) | 2020-12-21 | 2020-12-21 | Injection molding process for denture base |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107361866A (en) * | 2017-07-19 | 2017-11-21 | 贵阳新洋诚义齿有限公司 | A kind of manufacture method of removable partial denture resin base |
| CN107854187A (en) * | 2018-01-03 | 2018-03-30 | 程昕 | A kind of removable denture technique makes and method |
| CN109223218A (en) * | 2018-10-24 | 2019-01-18 | 邢浩 | Rack-type movable Dental CAD/CAM digitized manufacturing system method |
| CN109394364A (en) * | 2018-10-29 | 2019-03-01 | 山东迈尔医疗科技有限公司 | A kind of manufacture craft of novel 3D printing removable denture bracket |
| CN109620440A (en) * | 2019-01-17 | 2019-04-16 | 西安新定远精密齿研有限公司 | Removable denture and its manufacturing process |
| CN110547885A (en) * | 2018-05-30 | 2019-12-10 | 重庆多乐儿童口腔门诊部有限公司 | Tooth appliance |
| CN210056289U (en) * | 2018-12-26 | 2020-02-14 | 陕西定远齿科技术有限公司 | False tooth support |
-
2020
- 2020-12-21 CN CN202011519767.7A patent/CN112741700A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107361866A (en) * | 2017-07-19 | 2017-11-21 | 贵阳新洋诚义齿有限公司 | A kind of manufacture method of removable partial denture resin base |
| CN107854187A (en) * | 2018-01-03 | 2018-03-30 | 程昕 | A kind of removable denture technique makes and method |
| CN110547885A (en) * | 2018-05-30 | 2019-12-10 | 重庆多乐儿童口腔门诊部有限公司 | Tooth appliance |
| CN109223218A (en) * | 2018-10-24 | 2019-01-18 | 邢浩 | Rack-type movable Dental CAD/CAM digitized manufacturing system method |
| CN109394364A (en) * | 2018-10-29 | 2019-03-01 | 山东迈尔医疗科技有限公司 | A kind of manufacture craft of novel 3D printing removable denture bracket |
| CN210056289U (en) * | 2018-12-26 | 2020-02-14 | 陕西定远齿科技术有限公司 | False tooth support |
| CN109620440A (en) * | 2019-01-17 | 2019-04-16 | 西安新定远精密齿研有限公司 | Removable denture and its manufacturing process |
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Application publication date: 20210504 |