CN110002830A - A kind of preparation method of dental antibacterial plaster cast - Google Patents
A kind of preparation method of dental antibacterial plaster cast Download PDFInfo
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- CN110002830A CN110002830A CN201910230067.7A CN201910230067A CN110002830A CN 110002830 A CN110002830 A CN 110002830A CN 201910230067 A CN201910230067 A CN 201910230067A CN 110002830 A CN110002830 A CN 110002830A
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- plaster cast
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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
- A61C13/34—Making or working of models, e.g. preliminary castings, trial dentures; Dowel pins [4]
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
- C04B28/145—Calcium sulfate hemi-hydrate with a specific crystal form
- C04B28/146—Calcium sulfate hemi-hydrate with a specific crystal form alpha-hemihydrate
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00836—Uses not provided for elsewhere in C04B2111/00 for medical or dental applications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/2092—Resistance against biological degradation
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Ceramic Engineering (AREA)
- Engineering & Computer Science (AREA)
- Veterinary Medicine (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Life Sciences & Earth Sciences (AREA)
- Epidemiology (AREA)
- Crystallography & Structural Chemistry (AREA)
- Animal Behavior & Ethology (AREA)
- Inorganic Chemistry (AREA)
- Dentistry (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Dental Preparations (AREA)
Abstract
The invention discloses a kind of preparation methods of dental antibacterial plaster cast.The following steps are included: S1, purification process, phosphorus stone is configured to certain slurries, the screen to filtrate falls bulk impurity and suspended matter, dilute sulfuric acid is added and carries out neutralization reaction, remove a small amount of insoluble oxide, calcium carbonate, the impurity such as magnesium carbonate, it is set to be converted into soluble-salt, organic carbon is filtered simultaneously, after addition quick lime is neutralized, crushing grinding is at land plaster, S2, turn brilliant reaction, the land plaster is placed in mud blender, it is added in sulfuric acid and phosphoric acid mixing acid aqueous solution according to certain solid-to-liquid ratio, it is uniformly mixed, mixed slurry is made, add a certain amount of crystal modifier, sodium acetate is eventually adding as additive, form saturated solution system, so that slurries carry out turning brilliant reaction.The medicine have the advantages that it is more abundant that the raw material of dental antibacterial plaster cast can be made to stir, and the efficiency of die worker's work can be increased into.
Description
Technical field
The present invention relates to plaster cast field, in particular to a kind of preparation method of dental antibacterial plaster cast.
Background technique
Model plaster mainly by the half-H 2 O calcium sulphate of α type structure and adds the additives such as pigment appropriate to be fabricated.Gypsum
Mold be it is long-term in industrial production since the traditional moulds that use, the basic material one in casting production based on injection forming
Molding die has become an important factor for cast moulding, regularity, labor productivity and production cost are poured in restriction, and cream mold is industry
In production it is long-term since the traditional moulds that use, basic material a molding tool in casting production based on injection forming is
An important factor for pouring cast moulding, regularity, labor productivity and production cost as restriction, and used in sanitary ceramics industry at
Pattern tool mostly uses plaster cast, although the model of some producers also trial other materials replaces plaster cast both at home and abroad,
But mostly because of complex process, water absorption rate is low and the reasons such as expensive, be only used for certain special techniques and product.
But existing dental antibacterial plaster cast in the production process plaster cast raw material stirring be not enough,
Agitator tank can not be cleaned while stirring simultaneously, plaster cast not can be carried out quick positioning during Cheng Mo,
So that the efficiency of Cheng Mo substantially reduces.
Summary of the invention
The main purpose of the present invention is to provide a kind of preparation methods of dental antibacterial plaster cast, can effectively solve
The raw material stirring of plaster cast is not enough in background technique, at the same stir while agitator tank can not be carried out cleaning and
The problem of plaster cast not can be carried out quick positioning during Cheng Mo.
To achieve the above object, the technical scheme adopted by the invention is as follows:
A kind of preparation method of dental antibacterial plaster cast, comprising the following steps:
Phosphorus stone is configured to certain slurries by S1, purification process, and the screen to filtrate falls bulk impurity and suspended matter, and dilute sulfuric acid is added
Neutralization reaction is carried out, the impurity such as a small amount of insoluble oxide, calcium carbonate, magnesium carbonate is removed, so that it is converted into soluble-salt, together
When filter organic carbon, be added after quick lime is neutralized, crushing grinding is at land plaster；
S2, turn brilliant reaction, the land plaster is placed in mud blender, sulfuric acid is added according to certain solid-to-liquid ratio and phosphoric acid is mixed
It in aqueous acid, is uniformly mixed, mixed slurry is made, adds a certain amount of crystal modifier, is eventually adding sodium acetate as additional
Agent forms saturated solution system, so that slurries carry out turning brilliant reaction；
S3, crystallographic orientation are added chemical additives in Xiang Suoshu mixed liquor, stir evenly, be oriented crystallization, obtain α type half
The mixed liquor of water gypsum, the chemical additives include fumaric acid, fatty acid and surfactant；
Mixed liquor made from the step 3 containing alpha semi-hydrated gypsum is separated by solid-liquid separation, obtains solid phase A and liquid by S4, separation of solid and liquid
Phase B, liquid phase B are recycled, and obtained solid phase A and liquid phase B is mixed and carries out the brilliant reaction of circulation turn, the washing of solid phase A hot water
Afterwards, solid phase C and liquid phase D are obtained, liquid phase D provides sulfuric acid solution for diluting concentrated sulfuric acid, and solid phase C drying obtains pure half water of α type
Gypsum crystal；
S5, dry grinding, the pure alpha semi-hydrated gypsum crystal that the step 4 is obtained is in 120 degrees Celsius to 170 degrees Celsius items
Part is dried, and carries out grinding according to application fineness after drying to get the high whiteness alpha semi-hydrated gypsum powder of high-purity is arrived；
The preparation of S6, raw material, reinforcing agent, toughener, antiwear additive, water-reducing agent, defoaming agent and the resulting α type of the step 1 half
Water land plaster, the dental models gypsum raw material and parts by weight are respectively alpha semi-hydrated gypsum powder, reinforcing agent, toughener, wear-resistant
Agent, water-reducing agent, defoaming agent, wherein the reinforcing agent be cyanoacrylate, the toughener be acrylic resin and fiber,
The antiwear additive be butadiene and acrylonitrile copolymer, the water-reducing agent be naphthalene series high-efficiency water-reducing agent and melamine, it is described
Defoaming agent is D-30X high effective antifoaming agent；
The water of appropriate ratio is added in S7, stirring, first carries out manual stirring, by hand vacuum secondary agitation again after stirring, stirring it is same
When cleaned with cleaning device, flushing machine is rinsed after the completion of stirring；
S8, Cheng Mo will be stirred under vacuum the finished product that finishes and pour into reconstructed model in stamp, positioning mechanism to vacuum stirring finish at
Product are positioned, and curing and demolding is waited after standing.
Preferably, the solid content of the slurries in the step S1 is six ten five to percent percent, the gypsum
The granular size of powder is 20 to five ten microns.
Preferably, the ratio of solid-to-liquid ratio described in the step S2 is 1:8, and it is total that the quality of the sulfuric acid accounts for nitration mixture aqueous solution
Eight to percent ten the percent of quality, the quality of the phosphoric acid account for the 10 eight to percent of nitration mixture aqueous solution gross mass
20, the time of the conversion is four hours to 16 hours.
Preferably, the time of crystallographic orientation is one hour to four hours in the step S3.
Preferably, the hot water temperature of the washing of solid phase A hot water described in the step S4 is 80 degrees Celsius Celsius to 100
Degree.
Preferably, the time of drying described in the step S5 is one hour to two hours.
Preferably, 100 parts of alpha semi-hydrated gypsum powder in the step S6,15-20 parts of reinforcing agent, 10-12 parts of toughener, resist
8-10 parts of grinding agent, 6-8 parts of water-reducing agent, 3-5 parts of defoaming agent.
Preferably, the end of agitating shaft described in the step S7 is connected with cleaning brush, and the flushing machine passes through flushing
Head is rinsed agitator tank.
Preferably, the contact jaw of positioning mechanism is equipped with removable shim in the step S8.
Compared with prior art, the invention has the following beneficial effects: pass through increased secondary agitation, simultaneously cleaning and punching
Washing machine structure can be such that the raw material of dental antibacterial plaster cast stirs more abundant, while can guarantee the cleaning of agitator tank,
It by increased positioning mechanism, can quickly be positioned during Cheng Mo, so as to increase into the effect of die worker's work
Rate.
Detailed description of the invention
Fig. 1 is a kind of preparation flow schematic diagram of the preparation method of dental antibacterial plaster cast of the present invention；
Fig. 2 is a kind of flow diagram of the stirring of the preparation method of dental antibacterial plaster cast of the present invention；
Fig. 3 is a kind of flow diagram of the Cheng Mo of the preparation method of dental antibacterial plaster cast of the present invention.
Specific embodiment
To be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, below with reference to
Specific embodiment, the present invention is further explained.
Embodiment
A kind of preparation method of dental antibacterial plaster cast, comprising the following steps:
Phosphorus stone is configured to certain slurries by S1, purification process, and the screen to filtrate falls bulk impurity and suspended matter, and dilute sulfuric acid is added
Neutralization reaction is carried out, the impurity such as a small amount of insoluble oxide, calcium carbonate, magnesium carbonate is removed, so that it is converted into soluble-salt, together
When filter organic carbon, be added after quick lime is neutralized, crushing grinding is at land plaster；
S2, turn brilliant reaction, the land plaster is placed in mud blender, sulfuric acid is added according to certain solid-to-liquid ratio and phosphoric acid is mixed
It in aqueous acid, is uniformly mixed, mixed slurry is made, adds a certain amount of crystal modifier, is eventually adding sodium acetate as additional
Agent forms saturated solution system, so that slurries carry out turning brilliant reaction；
S3, crystallographic orientation are added chemical additives in Xiang Suoshu mixed liquor, stir evenly, be oriented crystallization, obtain α type half
The mixed liquor of water gypsum, the chemical additives include fumaric acid, fatty acid and surfactant；
Mixed liquor made from the step 3 containing alpha semi-hydrated gypsum is separated by solid-liquid separation, obtains solid phase A and liquid by S4, separation of solid and liquid
Phase B, liquid phase B are recycled, and obtained solid phase A and liquid phase B is mixed and carries out the brilliant reaction of circulation turn, the washing of solid phase A hot water
Afterwards, solid phase C and liquid phase D are obtained, liquid phase D provides sulfuric acid solution for diluting concentrated sulfuric acid, and solid phase C drying obtains pure half water of α type
Gypsum crystal；
S5, dry grinding, the pure alpha semi-hydrated gypsum crystal that the step 4 is obtained is in 120 degrees Celsius to 170 degrees Celsius items
Part is dried, and carries out grinding according to application fineness after drying to get the high whiteness alpha semi-hydrated gypsum powder of high-purity is arrived；
The preparation of S6, raw material, reinforcing agent, toughener, antiwear additive, water-reducing agent, defoaming agent and the resulting α type of the step 1 half
Water land plaster, the dental models gypsum raw material and parts by weight are respectively alpha semi-hydrated gypsum powder, reinforcing agent, toughener, wear-resistant
Agent, water-reducing agent, defoaming agent, wherein the reinforcing agent be cyanoacrylate, the toughener be acrylic resin and fiber,
The antiwear additive be butadiene and acrylonitrile copolymer, the water-reducing agent be naphthalene series high-efficiency water-reducing agent and melamine, it is described
Defoaming agent is D-30X high effective antifoaming agent；
The water of appropriate ratio is added in S7, stirring, first carries out manual stirring, by hand vacuum secondary agitation again after stirring, stirring it is same
When cleaned with cleaning device, flushing machine is rinsed after the completion of stirring；
S8, Cheng Mo will be stirred under vacuum the finished product that finishes and pour into reconstructed model in stamp, positioning mechanism to vacuum stirring finish at
Product are positioned, and curing and demolding is waited after standing.
The preparation method of a kind of dental antibacterial plaster cast as described in Figure 1: slurries in the step S1
Solid content is six ten five to percent percent, and the granular size of the land plaster is 20 to five ten microns.
The preparation method of a kind of dental antibacterial plaster cast as described in Figure 1: solid-to-liquid ratio described in the step S2
Ratio is 1:8, and the quality of the sulfuric acid accounts for eight to percent ten the percent of nitration mixture aqueous solution gross mass, the quality of the phosphoric acid
The 10 eight to percent two ten of nitration mixture aqueous solution gross mass are accounted for, the time of the conversion is four hours to 16 hours.
A kind of preparation method of dental antibacterial plaster cast as described in Figure 1: in the step S3 crystallographic orientation when
Between be one hour to four hours.
A kind of preparation method of dental antibacterial plaster cast as described in Figure 1: solid phase A hot water described in the step S4
The hot water temperature of washing is 80 degrees Celsius to 100 degrees Celsius.
A kind of preparation method of dental antibacterial plaster cast as described in Figure 1: drying described in the step S5 when
Between be one hour to two hours.
A kind of preparation method of dental antibacterial plaster cast as described in Figure 1: alpha semi-hydrated gypsum powder in the step S6
100 parts, 15-20 parts of reinforcing agent, 10-12 parts of toughener, 8-10 parts of antiwear additive, 6-8 parts of water-reducing agent, 3-5 parts of defoaming agent.
The preparation method of a kind of dental antibacterial plaster cast as described in Figure 2: agitating shaft described in the step S7
End is connected with cleaning brush, and the flushing machine is rinsed agitator tank by syringe pipe.
A kind of preparation method of dental antibacterial plaster cast as described in Figure 3: positioning mechanism connects in the step S8
Contravention is equipped with removable shim.
It should be noted that a kind of preparation method of dental antibacterial plaster cast of the present invention when in use matches phosphorus stone
Be made certain slurries, the screen to filtrate falls bulk impurity and suspended matter, and dilute sulfuric acid is added and carries out neutralization reaction, remove it is a small amount of not
The impurity such as insoluble oxide, calcium carbonate, magnesium carbonate make it be converted into soluble-salt, while filtering organic carbon, be added quick lime into
After row neutralisation treatment, land plaster is placed in mud blender by crushing grinding at land plaster, and sulphur is added according to certain solid-to-liquid ratio
It in acid and phosphoric acid mixing acid aqueous solution, is uniformly mixed, mixed slurry is made, adds a certain amount of crystal modifier, is eventually adding acetic acid
Sodium forms saturated solution system as additive, so that slurries carry out turning brilliant reaction, crystal form control is added in Xiang Suoshu mixed liquor
Agent stirs evenly, and is oriented crystallization, obtains the mixed liquor of alpha semi-hydrated gypsum, the chemical additives include fumaric acid,
Mixed liquor obtained containing alpha semi-hydrated gypsum is separated by solid-liquid separation, obtains solid phase A and liquid phase B, liquid by fatty acid and surfactant
Phase B is recycled, and obtained solid phase A and liquid phase B are mixed and carries out circulation and turns brilliant reaction, solid phase A after hot water washs,
Solid phase C and liquid phase D are obtained, liquid phase D provides sulfuric acid solution for diluting concentrated sulfuric acid, and solid phase C drying obtains pure half water stone of α type
Cream crystal obtained pure alpha semi-hydrated gypsum crystal is dried at 120 degrees Celsius to 170 degrees celsius, root after drying
Grinding is carried out according to application fineness to get the high whiteness alpha semi-hydrated gypsum powder of high-purity, reinforcing agent, toughener, antiwear additive, diminishing is arrived
The preparation of the raw materials such as agent, defoaming agent and alpha semi-hydrated gypsum powder, is added the water of appropriate ratio, first carries out manual stirring, stirs by hand
Vacuum secondary agitation again after mixing, stirring while, are cleaned with cleaning device, and flushing machine is rinsed after the completion of stirring,
The finished product finished will be stirred under vacuum and pour into reconstructed model in stamp, the finished product that positioning mechanism finishes vacuum stirring positions,
It is demoulded after waiting it to be cured after standing.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes still within the protection scope of the invention.
Claims (10)
1. a kind of preparation method of dental antibacterial plaster cast, which comprises the following steps:
Phosphorus stone is configured to certain slurries by S1, purification process, and the screen to filtrate falls bulk impurity and suspended matter, and dilute sulfuric acid is added
Neutralization reaction is carried out, the impurity such as a small amount of insoluble oxide, calcium carbonate, magnesium carbonate is removed, so that it is converted into soluble-salt, together
When filter organic carbon, be added after quick lime is neutralized, crushing grinding is at land plaster；
S2, turn brilliant reaction, the land plaster is placed in mud blender, sulfuric acid is added according to certain solid-to-liquid ratio and phosphoric acid is mixed
It in aqueous acid, is uniformly mixed, mixed slurry is made, adds a certain amount of crystal modifier, is eventually adding sodium acetate as additional
Agent forms saturated solution system, so that slurries carry out turning brilliant reaction；
S3, crystallographic orientation are added chemical additives in Xiang Suoshu mixed liquor, stir evenly, be oriented crystallization, obtain α type half
The mixed liquor of water gypsum, the chemical additives include fumaric acid, fatty acid and surfactant；
Mixed liquor made from the step 3 containing alpha semi-hydrated gypsum is separated by solid-liquid separation, obtains solid phase A and liquid by S4, separation of solid and liquid
Phase B, liquid phase B are recycled, and obtained solid phase A and liquid phase B is mixed and carries out the brilliant reaction of circulation turn, the washing of solid phase A hot water
Afterwards, solid phase C and liquid phase D are obtained, liquid phase D provides sulfuric acid solution for diluting concentrated sulfuric acid, and solid phase C drying obtains pure half water of α type
Gypsum crystal.
2.S5, dry grinding, the pure alpha semi-hydrated gypsum crystal that the step 4 is obtained is at 120 degrees Celsius to 170 degrees Celsius
Condition is dried, and carries out grinding according to application fineness after drying to get the high whiteness alpha semi-hydrated gypsum powder of high-purity is arrived；
The preparation of S6, raw material, reinforcing agent, toughener, antiwear additive, water-reducing agent, defoaming agent and the resulting α type of the step 1 half
Water land plaster, the dental models gypsum raw material and parts by weight are respectively alpha semi-hydrated gypsum powder, reinforcing agent, toughener, wear-resistant
Agent, water-reducing agent, defoaming agent, wherein the reinforcing agent be cyanoacrylate, the toughener be acrylic resin and fiber,
The antiwear additive be butadiene and acrylonitrile copolymer, the water-reducing agent be naphthalene series high-efficiency water-reducing agent and melamine, it is described
Defoaming agent is D-30X high effective antifoaming agent；
The water of appropriate ratio is added in S7, stirring, first carries out manual stirring, by hand vacuum secondary agitation again after stirring, stirring it is same
When cleaned with cleaning device, flushing machine is rinsed after the completion of stirring；
S8, Cheng Mo will be stirred under vacuum the finished product that finishes and pour into reconstructed model in stamp, positioning mechanism to vacuum stirring finish at
Product are positioned, and curing and demolding is waited after standing.
3. a kind of preparation method of dental antibacterial plaster cast according to claim 1, it is characterised in that: the step
The solid content of the slurries in S1 is six ten five to percent percent, and the granular size of the land plaster is 20 to five ten
Micron.
4. a kind of preparation method of dental antibacterial plaster cast according to claim 1, it is characterised in that: the step
The ratio of solid-to-liquid ratio described in S2 is 1:8, and the quality of the sulfuric acid accounts for eight to percent the percent of nitration mixture aqueous solution gross mass
Ten, the quality of the phosphoric acid accounts for the 10 eight to percent two ten of nitration mixture aqueous solution gross mass, and the time of the conversion is
Four hours to 16 hours.
5. the preparation method of dental antibacterial plaster cast according to claim 1, it is characterised in that: in the step S3
The time of crystallographic orientation is one hour to four hours.
6. a kind of preparation method of dental antibacterial plaster cast according to claim 1, it is characterised in that: the step
The hot water temperature of the hot water of solid phase A described in S4 washing is 80 degrees Celsius to 100 degrees Celsius.
7. a kind of preparation method of dental antibacterial plaster cast according to claim 1, it is characterised in that: the step
The time of drying described in S5 is one hour to two hours.
8. a kind of preparation method of dental antibacterial plaster cast according to claim 1, it is characterised in that: the step
100 parts of alpha semi-hydrated gypsum powder in S6,15-20 parts of reinforcing agent, 10-12 parts of toughener, 8-10 parts of antiwear additive, 6-8 parts of water-reducing agent,
3-5 parts of defoaming agent.
9. a kind of preparation method of dental antibacterial plaster cast according to claim 1, it is characterised in that: the step
The end of agitating shaft described in S7 is connected with cleaning brush, and the flushing machine is rinsed agitator tank by syringe pipe.
10. a kind of preparation method of dental antibacterial plaster cast according to claim 1, it is characterised in that: the step
The contact jaw of positioning mechanism is equipped with removable shim in rapid S8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910230067.7A CN110002830A (en) | 2019-03-26 | 2019-03-26 | A kind of preparation method of dental antibacterial plaster cast |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910230067.7A CN110002830A (en) | 2019-03-26 | 2019-03-26 | A kind of preparation method of dental antibacterial plaster cast |
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| Publication Number | Publication Date |
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| CN110002830A true CN110002830A (en) | 2019-07-12 |
Family
ID=67168086
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| CN201910230067.7A Pending CN110002830A (en) | 2019-03-26 | 2019-03-26 | A kind of preparation method of dental antibacterial plaster cast |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112562471B (en) * | 2020-12-03 | 2023-09-19 | 西安医学院 | Manufacturing method of children oral teaching operation model |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB941394A (en) * | 1960-08-25 | 1963-11-13 | Hans Joachim Bunder | Reinforcing inserts and a method for incorporating the same in dentures |
| CN108059376A (en) * | 2017-12-29 | 2018-05-22 | 应城市嘉鸿技术服务科技有限公司 | A kind of preparation method of dental models gypsum |
| CN108147447A (en) * | 2017-12-29 | 2018-06-12 | 应城市嘉鸿技术服务科技有限公司 | A kind of liquid phase method prepares the processing technology of alpha semi-hydrated gypsum |
-
2019
- 2019-03-26 CN CN201910230067.7A patent/CN110002830A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB941394A (en) * | 1960-08-25 | 1963-11-13 | Hans Joachim Bunder | Reinforcing inserts and a method for incorporating the same in dentures |
| CN108059376A (en) * | 2017-12-29 | 2018-05-22 | 应城市嘉鸿技术服务科技有限公司 | A kind of preparation method of dental models gypsum |
| CN108147447A (en) * | 2017-12-29 | 2018-06-12 | 应城市嘉鸿技术服务科技有限公司 | A kind of liquid phase method prepares the processing technology of alpha semi-hydrated gypsum |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112562471B (en) * | 2020-12-03 | 2023-09-19 | 西安医学院 | Manufacturing method of children oral teaching operation model |
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Application publication date: 20190712 |
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