CN112562471B - Manufacturing method of children oral teaching operation model - Google Patents
Manufacturing method of children oral teaching operation model Download PDFInfo
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- CN112562471B CN112562471B CN202011394718.5A CN202011394718A CN112562471B CN 112562471 B CN112562471 B CN 112562471B CN 202011394718 A CN202011394718 A CN 202011394718A CN 112562471 B CN112562471 B CN 112562471B
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- gypsum
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/28—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for medicine
- G09B23/283—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for medicine for dentistry or oral hygiene
Abstract
The invention discloses a method for manufacturing an operation model for teaching an oral cavity of a child, which specifically comprises the following steps: s1, preparing dental superhard gypsum powder: the invention relates to the technical field of oral cavity model making, in particular to a method for preparing an oral cavity model by taking a sufficient amount of gypsum, putting the gypsum into a high-speed crusher, crushing the gypsum to less than 1mm by the high-speed crusher, and then adding a crystal transformation agent for uniformly mixing. According to the manufacturing method of the children oral teaching operation model, nano particles and carboxyl liquid nitrile rubber are added into the super-hard gypsum powder and mixed for modulation, as the nano particles are extremely large in surface activity and high in rigidity, cracks can be stopped when the super-hard gypsum is solidified, energy is absorbed, the purpose of toughening is achieved, meanwhile, the anti-impact dispersion capacity of an oral cavity model is improved, the carboxyl liquid nitrile rubber is high in bending resistance and tensile property, and meanwhile, good ageing resistance is achieved, and the service life of the oral cavity model is greatly prolonged due to the fact that the nano particles are matched with the super-hard gypsum powder.
Description
Technical Field
The invention relates to the technical field of oral cavity model manufacturing, in particular to a manufacturing method of an operation model for teaching of an oral cavity of a child.
Background
The model is a male die of an object, the oral cavity model is a male die for recording tissue morphology and relation of each part of an oral cavity, the oral cavity model is formed by pouring an oral cavity female die (impression), a material for pouring the model is called a model material, and materials commonly used for manufacturing the oral cavity restoration model mainly comprise type I impression gypsum, type II plaster, type III ordinary artificial stone, type IV high-strength artificial stone, type V high-strength high-expansion dental artificial stone, type II is used as a model material for movable restoration, and the latter three types are used as a model material for crown bridge restoration.
When teaching children in the oral cavity, the oral cavity teaching model is adopted to help children to know the theoretical knowledge of the oral cavity and learn the practical operation of correctly brushing teeth, therefore, the quality of the oral cavity teaching model is vital, the existing oral cavity model is mainly made of dental superhard gypsum, and gypsum is easy to expand in the solidification process to cause cracks on the surface, so that the precision of the model is biased, and the oral cavity model is easy to break when being demolded, so that the bending resistance and the compressive strength of the oral cavity model are still to be further improved, and meanwhile, the oral cavity model is also easy to age after being exposed to the air for a long time when being used for teaching for a long time, so that the service life of the model is shortened.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the invention provides a method for manufacturing an operation model for children oral teaching, which solves the problems that the ultra-hard gypsum is easy to expand in the solidification process so as to cause cracks on the surface, the precision of the model is deviated, the bending resistance and the compressive strength of the oral model are not high, and the oral model is easy to age after being exposed to the air for a long time.
(II) technical scheme
In order to achieve the above purpose, the invention is realized by the following technical scheme: the method for manufacturing the children oral teaching operation model specifically comprises the following steps:
s1, preparing dental superhard gypsum powder: putting a sufficient amount of raw gypsum into a high-speed crusher, crushing the raw gypsum to less than 1mm by the high-speed crusher, adding a crystal transformation agent, uniformly mixing, putting the mixture into an autoclave, steaming and pressing the mixture at 0.35MPa and 135 ℃ for 6 hours, heating the inside of the autoclave to 120 ℃ after the reaction is finished, drying the material inside the autoclave at the temperature, taking out the dried material, putting the obtained raw material of the super-hard gypsum powder into the high-speed crusher, crushing the raw material of the super-hard gypsum powder by the high-speed crusher, taking out the super-hard gypsum powder by a 200-mesh sieve after crushing, and waiting for standby;
s2, preparing gypsum slurry: putting sufficient nano particles and carboxyl liquid nitrile rubber into a high-speed stirrer, stirring for 10-20S, putting the materials into an ultrasonic oscillator after stirring, adding the super-hard gypsum powder obtained in the step S1 into the ultrasonic oscillator, adding a proper amount of water according to a specified water-powder proportion, mixing and oscillating for 50-80S, and after the mixing is finished, slightly vibrating to remove bubbles, thus preparing gypsum slurry, and waiting for standby;
s3, pouring a gypsum oral cavity model: pouring the gypsum slurry prepared in the step S2 by means of an oscillator, wherein pouring is completed within 2-3min, stirring and vibrating cannot be performed after pouring, heating is started after 5-8min, and demoulding is performed within 45-60min, so that a crude product of the gypsum model is obtained;
s4, subsequent detection and adjustment of the gypsum oral cavity model: and (3) detecting the plaster model coarse product obtained in the step (S3), and detecting whether the ultra-hard plaster of the upper jaw model uniformly covers the palate top to 4mm behind the palate fovea, whether the ultra-hard plaster of the lower jaw model uniformly forms the complete forms of mandibular tooth groove kurtosis, tooth grinding back pad, tooth and kurtosis mucous membrane turning parts and residual teeth, whether the bottom surface of the model is flat, and when dimensional errors exist, carrying out overall precision adjustment on the plaster oral cavity model according to the errors, thereby finally obtaining the ultra-hard plaster oral cavity model with high toughness and compressive strength and aging resistance.
Preferably, the crystal former in the step S1 is one or more of sodium alkylaryl sulfonate, carboxymethyl cellulose, citric acid and malonic acid.
Preferably, the rotation speed of the high-speed stirrer in the step S2 is 1200r/min.
Preferably, the control accuracy error in the step S4 is ±0.05mm.
Preferably, the particle size of the nanoparticles in step S2 is between 1 and 100 nm.
(III) beneficial effects
The invention provides a method for manufacturing an operation model for teaching an oral cavity of a child. The beneficial effects are as follows: the manufacturing method of the children oral teaching operation model comprises the following steps of S1, preparing dental superhard gypsum powder: putting a sufficient amount of raw gypsum into a high-speed crusher, crushing the raw gypsum to less than 1mm by the high-speed crusher, adding a crystal transformation agent, uniformly mixing, putting the mixture into an autoclave, steaming and pressing the mixture at 0.35MPa and 135 ℃ for 6 hours, heating the inside of the autoclave to 120 ℃ after the reaction is finished, drying the material inside the autoclave at the temperature, taking out the dried material, putting the obtained raw material of the super-hard gypsum powder into the high-speed crusher, crushing the raw material of the super-hard gypsum powder by the high-speed crusher, taking out the super-hard gypsum powder by a 200-mesh sieve after crushing, and waiting for standby; s2, preparing gypsum slurry: putting sufficient nano particles and carboxyl liquid nitrile rubber into a high-speed stirrer, stirring for 10-20S, putting the materials into an ultrasonic oscillator after stirring, adding the super-hard gypsum powder obtained in the step S1 into the ultrasonic oscillator, adding a proper amount of water according to a specified water-powder proportion, mixing and oscillating for 50-80S, and after the mixing is finished, slightly vibrating to remove bubbles, thus preparing gypsum slurry, and waiting for standby; s3, pouring a gypsum oral cavity model: pouring the gypsum slurry prepared in the step S2 by means of an oscillator, wherein pouring is completed within 2-3min, stirring and vibrating cannot be performed after pouring, heating is started after 5-8min, and demoulding is performed within 45-60min, so that a crude product of the gypsum model is obtained; s4, subsequent detection and adjustment of the gypsum oral cavity model: and (3) detecting whether the ultra-hard gypsum of the upper jaw model uniformly covers the top of the palate to 4mm behind the concave of the palate, detecting whether the ultra-hard gypsum of the lower jaw model uniformly forms the complete shapes of the mandibular tooth socket kurtosis, the tooth back pad, the tooth and the kurtosis mucous membrane turning part and the remained tooth, and if the bottom surface of the model is smooth, adjusting the integral precision of the gypsum oral cavity model according to the requirement when dimensional errors exist, finally obtaining the ultra-hard gypsum oral cavity model with high toughness and compressive strength and aging resistance.
Drawings
FIG. 1 is a flow chart of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, the embodiment of the invention provides a technical scheme: the method for manufacturing the children oral teaching operation model comprises the steps of adding nano particles and carboxyl liquid nitrile rubber into super-hard gypsum powder, mixing and modulating, wherein the nano particles have very large surface activity and high rigidity, and can stop crack generation when the super-hard gypsum is solidified, so that the purpose of toughening is achieved by absorbing energy, meanwhile, the anti-impact dispersion capacity of an oral cavity model is improved to some extent, the carboxyl liquid nitrile rubber has high bending resistance and tensile property, and meanwhile, the super-hard gypsum powder has good ageing resistance, and the service life of the oral cavity model is greatly prolonged by the cooperation of the nano particles, the materials and the super-hard gypsum powder, and the method specifically comprises the following steps:
s1, preparing dental superhard gypsum powder: putting sufficient amount of gypsum into a high-speed crusher, crushing to less than 1mm by the high-speed crusher, adding a crystal transformation agent, uniformly mixing, putting into the high-pressure kettle, namely a reactor operated under high pressure, and according to the technological requirements, providing two high-pressure kettles with a stirrer and without the stirrer, wherein the structure of the high-pressure kettle is the same as that of stirring equipment, steaming and pressing for 6 hours at 0.35MPa and 135 ℃, heating the inside of the high-pressure kettle to 120 ℃, drying the material at the temperature, taking out the dried material, putting the obtained raw material of the super-hard gypsum powder into the high-speed crusher, crushing by the high-speed crusher, screening by a 200-mesh sieve after crushing is finished, waiting for standby, wherein the gypsum is dihydrate of calcium sulfate, and has the functions of mainly curing cold and hot wind, relieving muscle sweating, removing dry mouth and tongue scorch, relieving headache and toothache and the like;
s2, preparing gypsum slurry: putting sufficient nano particles and carboxyl liquid nitrile rubber into a high-speed stirrer, stirring for 10-20S, putting the materials into an ultrasonic oscillator after stirring, adding the super-hard gypsum powder obtained in the step S1 into the ultrasonic oscillator, adding a proper amount of water according to a specified water-powder proportion, mixing and oscillating for 50-80S, and after the mixing is finished, slightly vibrating to remove bubbles, thus preparing gypsum slurry for standby, wherein the ultrasonic oscillator generates oscillation by utilizing high-frequency sound waves of ultrasonic waves;
s3, pouring a gypsum oral cavity model: pouring the gypsum slurry prepared in the step S2 by means of an oscillator, wherein pouring is completed within 2-3min, stirring and vibrating cannot be performed after pouring, heating is started after 5-8min, and demoulding is performed within 45-60min, so that a crude product of the gypsum model is obtained;
s4, subsequent detection and adjustment of the gypsum oral cavity model: and (3) detecting the plaster model coarse product obtained in the step (S3), and detecting whether the ultra-hard plaster of the upper jaw model uniformly covers the palate top to 4mm behind the palate fovea, whether the ultra-hard plaster of the lower jaw model uniformly forms the complete forms of mandibular tooth groove kurtosis, tooth grinding back pad, tooth and kurtosis mucous membrane turning parts and residual teeth, whether the bottom surface of the model is flat, and when dimensional errors exist, carrying out overall precision adjustment on the plaster oral cavity model according to the errors, thereby finally obtaining the ultra-hard plaster oral cavity model with high toughness and compressive strength and aging resistance.
In the embodiment of the invention, the crystal transfer agent in the step S1 is one or a combination of more of sodium alkylaryl sulfonate, carboxymethyl cellulose, citric acid and malonic acid, and the cellulose is subjected to carboxymethyl to obtain carboxymethyl cellulose (CMC), and the aqueous solution has the functions of thickening, film forming, adhesion, water retention, colloid protection, emulsification, suspension and the like, and the citric acid is an important organic acid, namely citric acid, colorless crystals, usually contains a molecule of crystal water, has no odor, has strong sour taste and is easy to dissolve in water.
In the embodiment of the invention, the rotating speed of the high-speed stirrer in the step S2 is 1200r/min.
In the embodiment of the invention, the control precision error in the step S4 is +/-0.05 mm.
In the embodiment of the invention, the granularity of the nano particles in the step S2 is between 1 and 100 nm.
It is noted that relational terms such as first and second, and the like are 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. Moreover, 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 understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein 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 method for manufacturing an operation model for teaching an oral cavity of a child is characterized by comprising the following steps of: the method specifically comprises the following steps:
s1, preparing dental superhard gypsum powder: putting a sufficient amount of raw gypsum into a high-speed crusher, crushing the raw gypsum to less than 1mm by the high-speed crusher, adding a crystal transformation agent, uniformly mixing, putting the mixture into an autoclave, steaming and pressing the mixture at 0.35MPa and 135 ℃ for 6 hours, heating the inside of the autoclave to 120 ℃ after the reaction is finished, drying the material inside the autoclave at the temperature, taking out the dried material, putting the obtained raw material of the super-hard gypsum powder into the high-speed crusher, crushing the raw material of the super-hard gypsum powder by the high-speed crusher, taking out the super-hard gypsum powder by a 200-mesh sieve after crushing, and waiting for standby;
s2, preparing gypsum slurry: putting sufficient nano particles and carboxyl liquid nitrile rubber into a high-speed stirrer, stirring for 10-20S, putting the materials into an ultrasonic oscillator after stirring, adding the super-hard gypsum powder obtained in the step S1 into the ultrasonic oscillator, adding a proper amount of water according to a specified water-powder proportion, mixing and oscillating for 50-80S, and after the mixing is finished, slightly vibrating to remove bubbles, thus preparing gypsum slurry, and waiting for standby;
s3, pouring a gypsum oral cavity model: pouring the gypsum slurry prepared in the step S2 by means of an oscillator, wherein pouring is completed within 2-3min, stirring and vibrating cannot be performed after pouring, heating is started after 5-8min, and demoulding is performed within 45-60min, so that a crude product of the gypsum model is obtained;
s4, subsequent detection and adjustment of the gypsum oral cavity model: and (3) detecting the plaster model coarse product obtained in the step (S3), and detecting whether the ultra-hard plaster of the upper jaw model uniformly covers the palate top to 4mm behind the palate fovea, whether the ultra-hard plaster of the lower jaw model uniformly forms the complete forms of mandibular tooth groove kurtosis, tooth grinding back pad, tooth and kurtosis mucous membrane turning parts and residual teeth, whether the bottom surface of the model is flat, and when dimensional errors exist, carrying out overall precision adjustment on the plaster oral cavity model according to the errors, thereby finally obtaining the ultra-hard plaster oral cavity model with high toughness and compressive strength and aging resistance.
2. The method for manufacturing the children oral teaching operation model according to claim 1, wherein the method comprises the following steps of: the crystal transfer agent in the step S1 is one or a combination of more of sodium alkylaryl sulfonate, carboxymethyl cellulose, citric acid and malonic acid.
3. The method for manufacturing the children oral teaching operation model according to claim 1, wherein the method comprises the following steps of: the rotating speed of the high-speed stirrer in the step S2 is 1200r/min.
4. The method for manufacturing the children oral teaching operation model according to claim 1, wherein the method comprises the following steps of: and in the step S4, the control precision error is +/-0.05 mm.
5. The method for manufacturing the children oral teaching operation model according to claim 1, wherein the method comprises the following steps of: the particle size of the nano particles in the step S2 is between 1 and 100 nm.
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