CN113317902A - All-ceramic whitening tooth socket and preparation method thereof - Google Patents
All-ceramic whitening tooth socket and preparation method thereof Download PDFInfo
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- CN113317902A CN113317902A CN202110795241.XA CN202110795241A CN113317902A CN 113317902 A CN113317902 A CN 113317902A CN 202110795241 A CN202110795241 A CN 202110795241A CN 113317902 A CN113317902 A CN 113317902A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C19/00—Dental auxiliary appliances
- A61C19/06—Implements for therapeutic treatment
- A61C19/063—Medicament applicators for teeth or gums, e.g. treatment with fluorides
- A61C19/066—Bleaching devices; Whitening agent applicators for teeth, e.g. trays or strips
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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)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
The invention relates to an all-ceramic whitening tooth socket and a preparation method thereof, wherein the all-ceramic whitening tooth socket comprises the following steps: scanning the oral cavity of a patient through a scanner to obtain a digital model of the complete dentition of the patient; inputting the digital model into computer aided design software, determining a dental position to be manufactured based on the requirement of a dental brace of a patient, determining an external crown mode, adding a connecting body, selecting a digital impression and aligning the jaw teeth in the computer aided design software based on the dental position to be manufactured, and further obtaining an order corresponding to the dental position; respectively determining the direction of a channel in place and drawing the outline of an edge line based on the dentition condition and the inverted concave filling condition of a patient, selecting a digital tooth form in a tooth form database, and then connecting each independent digital tooth form in the digital model into a whole to obtain tooth socket data; carrying out secondary processing on the tooth socket data to obtain tooth socket model data, and printing and generating an all-ceramic whitening tooth socket based on the tooth socket model data; the method does not need to polish healthy teeth, does not influence the teeth, and reduces the complicated steps of whitening the teeth in the prior art.
Description
Technical Field
The invention relates to the field of tooth socket equipment, in particular to an all-ceramic whitening tooth socket and a preparation method thereof.
Background
With the increasing living standard of people, people are pursuing beauty increasingly, and especially pay more attention to teeth in facial management. With age, the enamel of a person inevitably becomes thinner and thinner, resulting in more dentin color being transmitted and the teeth appearing more yellow. In addition, food and dark drinks which are eaten by people at ordinary times and people who smoke and drink can also be attached to enamel on the surface of teeth to color the teeth, and the teeth only become yellow with the age.
While existing tooth whitening is divided into two main categories: chemical whitening and physical whitening; in the physical whitening mode, such as resin, all-ceramic veneers and medical porcelain teeth, which belong to special medical methods, can be used only after being treated by special dentists in hospitals, the resin and all-ceramic veneers are used for realizing the whitening effect by pasting a layer of material similar to the color of normal teeth on the surfaces of the teeth, and meanwhile, the veneers need to use special composite resin and ceramic slurry and need to shape, cure and polish the teeth.
In addition, cold light whitening is the most common in chemical whitening, which relies mainly on bleaching agents to brighten the teeth; the bleaching agent used is generally strong oxidant such as hydrogen peroxide, when the cold light is whitened, dentists apply hydrogen peroxide with certain concentration on the surfaces of the teeth of patients, and the surface of the teeth and deeper pigments can be removed through oxidation-reduction reaction; and blue light (cold light) irradiation is generally supplemented in order to accelerate the reaction speed and strengthen the tooth bleaching effect.
When the tooth whitening mode is adopted, the cold light whitening can be generally kept for 1-2 years, if the whitening degree needs to be increased, multiple treatments are carried out, the higher the treatment frequency is, the higher the damage degree of enamel and gum is, the excessive and improper adoption of the cold light whitening method can even cause the early aging and yellowing of teeth, and the cold light whitening needs special instruments and medicaments and needs to be treated in a hospital; the whitening mode of the resin and all-ceramic veneers is expensive, needs to polish teeth, is not suitable for abnormal shapes of the teeth, and is very easy to collapse due to the fact that the thicknesses of the resin and all-ceramic veneers are thin; the medical porcelain tooth is very expensive because the tooth needs to be polished and the price of a single tooth is calculated, and a series of subsequent tooth problems such as gingivitis, tooth necrosis, pulpitis and the like are easily caused by a little carelessness and the subsequent diseases are endless; in addition, there is a method of whitening a tooth paste in tooth whitening, but the tooth paste is not customized for each user, and the shape of the tooth paste is similar to a transparent adhesive tape, and the size of the tooth paste is not suitable for the shape of all the teeth, and the tooth paste may contact with the gum to cause damage to gum tissues.
In summary, in the existing tooth whitening, the physical whitening mode generally needs to polish the teeth of a patient, so that the tissue structure of the teeth is affected, and chemical whitening easily causes advanced aging and yellowing of the teeth after being used for many times, so that the teeth are not good; and the steps of both physical whitening and chemical whitening are cumbersome.
Disclosure of Invention
The invention aims to provide an all-ceramic whitening tooth socket which is convenient to detach, does not need to polish healthy teeth, does not influence the tissue structure of the teeth, has a protective effect on the teeth and reduces the complicated steps in the tooth whitening process, and a preparation method thereof.
In order to solve the technical problems, the invention provides a preparation method of an all-ceramic whitening tooth socket, which comprises the following steps:
step 1, obtaining a digital model: scanning the oral cavity of a patient through a scanner to obtain a digital model of the complete dentition of the patient, wherein the digital model is used for checking the dentition condition, the natural tooth position, the tooth position and the inverted-concave filling condition;
step 2, establishing an order corresponding to the tooth positions: inputting the digital model into computer aided design software, determining a dental position to be manufactured based on the requirement of a dental brace of a patient, determining an external crown mode, adding a connecting body, selecting a digital impression and aligning the jaw teeth in the computer aided design software based on the dental position to be manufactured, and further obtaining an order corresponding to the dental position;
step 3, designing the shape of the tooth socket: in computer aided design software, respectively determining the direction of a positioning channel and drawing a margin line outline based on the dentition condition and the inverted concave filling condition of a patient, selecting a digital tooth form in a tooth form database, and then connecting each independent digital tooth form in a digital model into a whole to obtain tooth socket data;
and 4, finishing the appearance design of the tooth socket: carrying out secondary processing on the tooth socket data to obtain tooth socket model data, wherein the tooth socket data is repaired in the secondary processing to form a tooth body;
and printing and generating the all-ceramic whitening tooth socket based on the tooth socket model data.
Further, the step of printing and generating the all-ceramic whitening tooth socket based on the tooth socket model data comprises the following steps:
step 5, preparing an all-ceramic whitening tooth socket blank: obtaining an all-ceramic whitening tooth socket blank body through 3D printing based on tooth socket model data, wherein the all-ceramic whitening tooth socket blank body is formed by forming a support by using a water-soluble support material, and ceramic slurry is sprayed onto the support to be molded; and then cleaning and removing the water-soluble supporting material to obtain the all-ceramic whitening tooth socket blank body after the supporting object is removed.
Step 6, treating the all-ceramic whitening tooth socket blank: and drying, degreasing, sintering and surface treating the all-ceramic whitening tooth socket blank to obtain the all-ceramic whitening tooth socket.
Further, the drawing of the edge line profile in step 3 is to draw the edge line profile according to the neck edge profile for different teeth positions.
Further, the digital tooth form is selected according to the face form and the arch form of the patient in step 3.
Further, the selecting of the digital tooth form according to the face form of the patient comprises: determining smile lines corresponding to the digital tooth forms according with the face forms of the patients according to the original dentition conditions, the natural tooth positions and a calculation formula of the patients; wherein, the smile line formula is:
smile symmetry rate ═ distance from right corner to upper lip midpoint + distance from right corner to lower lip midpoint)/(distance from left corner to upper lip midpoint + distance from left corner to lower lip midpoint).
Further, when the digital tooth form conforming to the dental arch form of the patient is selected, the size and the direction of the digital tooth form conforming to the facial form of the patient are adjusted; when the size of the digital tooth form is adjusted, the thickness of the front tooth is not less than 0.3mm, and the thickness of the back tooth is not less than 0.5 mm.
Further, after the digital tooth forms are selected in the step 3, each selected digital tooth form is trimmed by computer aided design software, and occlusion interference points in the digital tooth forms are removed through an occlusion testing function.
Further, the ceramic slurry in the step 5 is a mixed solvent of nano zirconia particle powder, a dispersing agent and a stabilizing agent, and the water-soluble support material is a sodium carbonate nano particle suspension.
Further, the step 5 of cleaning and removing the water-soluble supporting materials at the constant temperature comprises the steps of putting the all-ceramic whitening tooth socket blank into a constant-temperature water tank, and carrying out vortex circulation cleaning to remove a support formed by the water-soluble supporting materials.
The invention also discloses an all-ceramic whitening tooth socket which is manufactured according to the preparation method of the all-ceramic whitening tooth socket.
The invention obtains the digital model of the whole dentition of a patient through the scanner, determines the in-position channel direction and draws the edge line outline according to the dentition condition and the undercut filling condition of the patient, selects a proper digital dentition in the dentition database, and obtains the whitening tooth socket suitable for the patient after secondary treatment, the patient can be detached at any time when wearing the whitening tooth socket, and the healthy teeth do not need to be polished in the using process, therefore, the tissue structure of the teeth can not be influenced, meanwhile, because the tooth socket is manufactured according to the oral cavity data of the patient, the adaptability between the whitening tooth socket and the teeth of the patient is improved, the condition that the patient such as a tooth paste is not suitable is avoided, and because the whitening tooth socket does not need to polish the teeth of the patient, the complex operation steps in the existing tooth whitening process are reduced, in addition, because the whitening tooth socket is used, is worn outside the patient's teeth, so the whitening mouthpiece also has a protective effect on the patient's own teeth.
Drawings
FIG. 1 is a schematic flow diagram of the present invention.
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 that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced devices or components must be constructed and operated in a particular orientation and thus are not to be considered limiting.
It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.
As shown in fig. 1, the invention provides a preparation method of an all-ceramic whitening tooth socket, which comprises the following steps:
step 1, obtaining a digital model: scanning the oral cavity of a patient through a scanner to obtain a digital model of the complete oral dentition of the patient, wherein the digital model is used for checking the dentition condition, the natural tooth position, the tooth position and the inverted concave filling condition, and the scanner comprises an oral cavity scanner or an extraoral scanner for scanning;
step 2, establishing an order corresponding to the tooth positions: inputting the digital model into computer aided design software, filling contents such as design date, patient name, doctor name and the like in an order establishing interface, then determining a dental position to be manufactured based on the requirement of a dental brace of a patient, determining an external crown mode, adding a connecting body, selecting a digital impression and aligning the jaw teeth in the computer aided design software based on the dental position to be manufactured, and further obtaining an order corresponding to the dental position;
step 3, designing the shape of the tooth socket: in computer aided design software, determining a positioning channel direction based on the dentition condition and the filling condition of an inverted concave of a patient to ensure the depth and the angle of the inverted concave, then drawing the edge line outline of the corresponding tooth position, selecting a digital tooth form in a tooth form database, selecting the basis of the digital tooth form as the basis of conforming to the face form and the dental arch form of the patient, then adjusting the shape size and the position of the selected digital tooth form to ensure that the digital tooth form can wrap the natural tooth after being manufactured, and finally connecting each independent digital tooth form in a digital model into a whole by using an addition engraving tool carried by the computer aided design software to obtain tooth socket data;
and 4, finishing the appearance design of the tooth socket: carrying out secondary processing on the tooth socket data to obtain tooth socket model data, wherein the secondary processing process comprises the steps of exporting the obtained tooth socket data to generate model data special for 3D printing equipment, namely model data of a stl format file, importing the model data into dental engraving software, repairing the shape of a tooth body in the model data through the dental engraving software during secondary processing, then obtaining designed tooth socket model data, and printing and generating an all-ceramic whitening tooth socket based on the tooth socket model data;
the method for generating the all-ceramic whitening tooth socket based on the tooth socket model data printing comprises the following steps:
step 5, preparing an all-ceramic whitening tooth socket blank: obtaining an all-ceramic whitening tooth socket blank body through 3D printing based on tooth socket model data, wherein the all-ceramic whitening tooth socket blank body is formed by forming a support by using a water-soluble support material, and ceramic slurry is sprayed onto the support to be molded; and then cleaning and removing the water-soluble supporting material to obtain the all-ceramic whitening tooth socket blank body after the supporting object is removed.
Specifically, the designed tooth socket model data is imported into 3D printing processing software, and the designed tooth socket model data is repaired and typeset through the 3D printing processing software to obtain typeset model data; then slicing the typeset model data, and sending the sliced model data to a 3D printer through an internal local area network; after the model data after the slicing processing is input into a 3D printer, a piezoelectric type spray head in the 3D printer receives the model data to be printed, and respectively sprays ceramic slurry and a water-soluble supporting material onto a printing tray, wherein the two materials are mutually independent, and then the tray descends layer by layer in equal height and is matched with the piezoelectric type spray head to perform spray printing; in the process of jet printing, the tray is heated to enable the ceramic slurry to be formed into the all-ceramic whitening tooth socket, and the supporting material is formed into a support to provide protection and supporting functions for the all-ceramic whitening tooth socket, so that a blank body of the all-ceramic whitening tooth socket is finally completed; putting the all-ceramic whitening tooth socket blank into a constant-temperature water tank, carrying out eddy current circulation cleaning to remove water-soluble supports and leaving the cleaned all-ceramic whitening tooth socket blank;
step 6, treating the all-ceramic whitening tooth socket blank: and drying, degreasing, sintering and surface treating the all-ceramic whitening tooth socket blank to obtain the all-ceramic whitening tooth socket.
Specifically, drying: putting the cleaned all-ceramic whitening tooth socket blank body into a drying box for drying treatment;
degreasing and sintering: using a dental sintering furnace to carry out an integrated treatment procedure of degreasing and sintering on the all-ceramic whitening tooth socket blank;
surface treatment: and glazing the surface of the all-ceramic whitening tooth socket by using the glaze paste, and then carrying out glaze firing operation by using a porcelain oven to finally obtain the processed all-ceramic whitening tooth socket.
In the scheme, a digital model of the complete dentition of a patient is obtained through a scanner, a proper in-place way direction is selected according to the dentition condition and the undercut filling condition of the patient, a proper edge line outline is drawn, a proper digital dentition is selected in a dentition database, and a whitening tooth socket suitable for the patient is obtained after secondary carving, the patient can detach the whitening tooth socket at any time when wearing the whitening tooth socket, and the healthy teeth do not need to be polished in the using process, so the tissue structure of the teeth cannot be influenced, meanwhile, because the whitening tooth socket is manufactured according to the oral cavity data of the patient, the adaptability between the whitening tooth socket and the teeth of the patient is improved, the condition that the patient does not adapt to the tooth paste and the like is avoided, and because the whitening tooth socket does not need to be polished and the like, the complex operation steps in the existing tooth process are reduced, in addition, the whitening tooth socket is worn outside the teeth of the patient when in use, so the whitening tooth socket also has a protective effect on the teeth of the patient.
Specifically, in the step 1, the oral cavity scanner or the extraoral scanner is used for scanning the oral cavity of the patient, the oral cavity scanner is preferably 3shape TRIOS 3Basic, and the extraoral scanner is preferably 3shape E3; when the mouth of a patient is scanned by using the external scanner, firstly, the silicon rubber is used, the patient bites the silicon rubber under the correct jaw relation, so that the silicon rubber forms an oral impression of the patient, the dentition details of the patient are accurately acquired, and then the oral impression of the patient formed by the silicon rubber is directly scanned by the external scanner, so that an accurate digital model is obtained; after obtaining the digital model of the patient's mouth by either the oral scanner or the extraoral scanner, the digital model is transmitted to the intended recipient.
Through the two oral cavity scanning modes, in the process of acquiring the oral cavity data of the patient, the appropriate oral cavity scanning mode can be selected in a targeted manner according to the actual condition of the patient, and the adaptability and the accuracy of the oral cavity scanning of the patient are improved.
Computer aided design software used in steps 2 and 3, preferably 3Shape Dental System; wherein, in the in-process of selecting, designing tooth position in step 2, 3, every tooth position in the facing designs one by one, and because every tooth position need design one by one, consequently after each tooth position design is accomplished, need connect every tooth position as an organic whole through the connector, and then form complete facing, through the interpolation of connector for can interconnect between the single tooth position, increase the stability between the tooth position.
In step 3, when the positioning track direction is determined, an average undercut method or an adjustment undercut method is used to ensure that the undercut depth is less than 1-2.5mm and the undercut angle is less than 10-20 degrees; wherein, the average undercut method refers to: drawing a guide line of each abutment at a position where the mesial-distal direction and the bucco-lingual undercut of each abutment are relatively average, designing and manufacturing the false tooth according to the guide line, wherein the common in-place direction of the false tooth is the bisector direction of the intersection angle of the long axes of the abutments at two ends, and the average undercut method is mainly used for cases with more tooth missing gaps and large undercut of the abutments; and the adjustment of the undercut method means: the undercut is properly concentrated on some abutment or one side of the abutment, the false tooth manufactured by the undercut method is adjusted to be obliquely positioned, the locking effect can be utilized to enhance the fixing effect of the false tooth, and the gap between the edentulous area of the anterior tooth and the adjacent tooth can be reduced to be favorable for the appearance.
In addition, when the margin line contour is drawn for the tooth positions in the step 3, the margin line contour is drawn according to the neck-edge contour for different tooth positions to ensure that each tooth has an independent contour, so that the manufactured tooth sockets can correspond to the teeth of the patient one by one, and the adaptability of the patient to the tooth sockets is improved.
In step 3, the selection of the digital tooth form conforming to the patient's facial form comprises: determining smile lines corresponding to the digital tooth forms according with the face forms of the patients according to the original dentition conditions, the natural tooth positions and a calculation formula of the patients; wherein, the smile line formula is:
smile symmetry rate ═ distance from right corner to upper lip midpoint + distance from right corner to lower lip midpoint)/(distance from left corner to upper lip midpoint + distance from left corner to lower lip midpoint)
The digital tooth form is designed in an individualized way through the determined smile line, so that the beautifying effect can be improved when the whitening tooth socket manufactured by the scheme is used by a patient, and the adaptability between the whitening tooth socket and the patient is improved.
In addition, when the digital tooth form conforming to the dental arch form of the patient is selected, the size and the direction of the digital tooth form conforming to the facial form of the patient and aesthetic arrangement are adjusted, the size and the direction of the digital tooth form are adjusted to achieve a proper space curve and a proper wilson curve, and then the size and the position of the digital tooth form are finely adjusted to ensure that the digital tooth form can wrap natural teeth after being manufactured, and meanwhile, when the size of the digital tooth form is adjusted, the thickness of front teeth is not less than 0.3mm, and the thickness of back teeth is not less than 0.5 mm.
In step 3, after selecting the digital tooth forms which accord with the face form and the dental arch form of the patient, trimming each selected digital tooth form by using a dragging function and an adding and subtracting graver in computer aided design software to ensure that each digital tooth form has a proper edge ridge, abduction gap and adjacency, then opening an occlusion test function, and removing occlusion interference points in the digital tooth form through the occlusion test function; when the occlusion test is carried out, an operator cannot lift the occlusion position or interfere the occlusion movement process so as to avoid deviation of the occlusion test result, meanwhile, in the occlusion test process, a virtual jaw frame is used for carrying out the occlusion test, the virtual jaw frame can set parameters according to the condylar guidance inclination transferred by the facial arch of a patient and can also set parameters according to the average value of 20-30 degrees, then, the occlusion test is used for detecting the interference point of the digital tooth form in the occlusion process, and the occlusion high point function is automatically removed by using computer aided design software or the occlusion interference point is removed by adding or subtracting the graver function, so that the condition that the occlusion process of the patient is not suitable due to the existence of the occlusion interference point after the whitening tooth socket is manufactured is avoided.
In step 4, the dental engraving software is preferably Materialise Magics or PLASTY CAD, after model data of the stl format file is imported into the Materialise Magics or PLASTY CAD, since the posterior teeth are in a raised state in the occlusion state, cutting and engraving are required to be performed on the outline of the posterior dentogofacial area along the marginal ridge, the dentofacial area is in a windowing state, the gap between the posterior dentogofacial area is reserved as a dentofacial support, and finally, after secondary engraving is completed, designed tooth socket model data is obtained.
In the step 5, the 3D printing processing software is the 3D printing typesetting software special for the 3D printer.
Specifically, in the step 5, after the designed facing model data is imported into 3D printing processing software, a part repairing interface is entered, and abnormal triangular surface patches, bad edges and interfering shells of the facing model data are repaired; then entering a translation part interface, and placing the tooth socket model data at a proper position through rotation and translation; after the placement is finished, the optimal configuration is selected in software to automatically generate support, and then the typesetted model data is obtained.
Wherein, 3 different configurations are provided in the 3D printing processing software, and the configuration 1: printing a water insoluble support to prevent sintering deformation; configuration 2: printing a fully dissolvable support for hollow parts that are not easily cleaned, with the disadvantage of not being able to withstand heavy parts; configuration 3: the printing mixed support has certain bearing capacity; preferably, configuration 3 is used in this scheme.
In step 5, slicing processing means converting the model data after the stl format typesetting into 3D printer action data by using 3D printer control software proprietary to the 3D printer, dividing an entity into a plurality of layers with equal thickness, which is the basis when 3D printing, and dividing the layers into paths when 3D printing is performed; the layer thickness is the thickness of each layer, the layer thickness determines the precision of the all-ceramic whitening tooth socket, particularly the surface precision, if the layer thickness is smaller, the printed object has high relative precision, and the surface texture is better, the surface texture refers to the fact that the 3D printing can form a layer-by-layer trace on the surface due to the layered manufacturing, and preferably, the layer thickness in the scheme is set to be 5 micrometers-10 micrometers.
Preferably, the 3D printer in step 6 is a nanoparticle inkjet 3D printer.
In step 5, at least two piezoelectric nozzles in the 3D printer are arranged and respectively spray ceramic slurry and water-soluble support material, wherein the ceramic slurry is preferably a mixed solvent containing zirconium oxide particle powder with the particle size of 50-100 nanometers, a dispersing agent and a stabilizing agent, and the water-soluble support material is preferably sodium carbonate nanoparticle suspension; the two printing materials are respectively stored in two sealed ink tanks and automatically filled into the piezoelectric type spray heads according to requirements, the piezoelectric type spray heads precisely move along the direction X, Y according to printing data in the printing process and spray corresponding printing materials on the printing tray, meanwhile, the printing tray descends with the height of 5-10 microns along the Z direction, when one layer descends, the heating lamps at two sides of the piezoelectric type spray heads and the printing tray are heated to evaporate the liquid part in the printing materials at the high temperature of 160 plus 200 ℃ to leave formed zirconium oxide ceramics and a support, the printing process is repeated for each layer, and finally the all-ceramic whitening tooth socket blank with the support protection is obtained.
In the step 5, the water-soluble support can be dissolved and fall off in the aqueous solution under certain conditions, so that the separation between the support material and the all-ceramic whitening tooth socket blank is realized, and when water stripping is carried out, the support material is required to be quickly and completely dissolved in water so as to ensure that the surface of the all-ceramic whitening tooth socket blank is clean and protect the fine structure of the molded all-ceramic whitening tooth socket blank; and because the support has certain intensity, the printing tray is taken out of the printer and is placed into a constant-temperature cleaning tank filled with pure water at the temperature of 25-35 ℃, then the eddy of a flow field of 30-200 r/min is started to be fully soaked, so that water can enter and exit the support, and then the support can be thoroughly removed through cleaning, wherein the preferable time for soaking in the eddy is 6-24 hours.
Preferably, in the step 6 of the scheme, after the all-ceramic whitening tooth socket blank body is placed in a drying oven, the temperature is set to be 100 ℃, and the drying process of the all-ceramic whitening tooth socket can be completed after the all-ceramic whitening tooth socket blank body is kept for 30 minutes.
Step 6, placing the dried all-ceramic whitening tooth socket on zirconium beads of a dental sintering furnace hearth, operating a degreasing and sintering integrated program, heating from 0 ℃ to 300 ℃ at a speed of 5 ℃/min, and keeping the temperature for 30 min; heating from 300 deg.C to 800 deg.C at a speed of 5 deg.C/min, and maintaining for 120 min; heating from 800 ℃ to 1530 ℃ at the speed of 3 ℃/min, and keeping the temperature for 150 min; cooling from 1530 ℃ to 900 ℃ at a speed of 10 ℃/min, and cooling from 900 ℃ to room temperature at a speed of 5 ℃/min; after the sintering temperature curve is operated, degreasing and sintering of the all-ceramic whitening tooth socket are completed, wherein the XYZ triaxial shrinkage rate of the all-ceramic whitening tooth socket is 18%, the size error is accurately controlled to be +/-0.02 mm, and the density is as high as 99.95%.
In the scheme, the surface treatment of the all-ceramic whitening tooth socket only needs the glazing treatment in the step 6, and other treatment steps are not needed, so that the surface treatment procedures are reduced, and the whitening tooth socket manufactured by the scheme has a 'hollywood white' color, and is good in bacterial resistance, luster and transparency.
In addition, according to the scheme, the all-ceramic whitening tooth socket is manufactured through personalized digitalization, and the traditional process procedures such as model filling, wax pattern preparation, embedding casting and the like are eliminated from the process from the end of a doctor to the process from design to additive manufacturing, so that the period is shorter, the precision standard is higher, and the all-ceramic whitening tooth socket is suitable for different patients.
According to the all-ceramic whitening tooth socket manufactured by the preparation method, as the mixed solvent of the zirconia particle powder with the particle size of 50-100 nanometers, the dispersing agent and the stabilizing agent is used in the scheme, the particle crystal grains in the all-ceramic whitening tooth socket have good uniformity, high activity and less agglomeration, and the formed finished product has the tooth color of 'hollywood white'; compared with the existing resin whitening tooth socket, the all-ceramic whitening tooth socket has the advantages of higher strength and stronger wear resistance.
Moreover, for a part of patients who have special diseases and are inconvenient to do oral repair operations, teeth can be whitened through the scheme, anesthesia is not needed in the scheme, the teeth of the patients do not need to be polished, a binder is not needed, and the convenience of the patients in use is improved.
The present invention is not limited to the above-mentioned preferred embodiments, and any other products in various forms can be obtained by anyone in the light of the present invention, but any changes in the shape or structure thereof, which have the same or similar technical solutions as those of the present application, fall within the protection scope of the present invention.
Claims (10)
1. The preparation method of the all-ceramic whitening tooth socket is characterized by comprising the following steps of:
step 1, obtaining a digital model: scanning the oral cavity of a patient through a scanner to obtain a digital model of the complete dentition of the patient, wherein the digital model is used for checking the dentition condition, the natural tooth position, the tooth position and the inverted-concave filling condition;
step 2, establishing an order corresponding to the tooth positions: inputting the digital model into computer aided design software, determining a dental position to be manufactured based on the requirement of a dental brace of a patient, determining an external crown mode, adding a connecting body, selecting a digital impression and aligning the jaw teeth in the computer aided design software based on the dental position to be manufactured, and further obtaining an order corresponding to the dental position;
step 3, designing the shape of the tooth socket: in computer aided design software, respectively determining the direction of a positioning channel and drawing a margin line outline based on the dentition condition and the inverted concave filling condition of a patient, selecting a digital tooth form in a tooth form database, and then connecting each independent digital tooth form in a digital model into a whole to obtain tooth socket data;
and 4, finishing the appearance design of the tooth socket: carrying out secondary processing on the tooth socket data to obtain tooth socket model data, wherein the tooth socket data is repaired in the secondary processing to form a tooth body;
and printing and generating the all-ceramic whitening tooth socket based on the tooth socket model data.
2. The preparation method of the all-ceramic whitening tooth socket according to claim 1, characterized in that: the method for generating the all-ceramic whitening tooth socket based on the tooth socket model data printing comprises the following steps:
step 5, preparing an all-ceramic whitening tooth socket blank: obtaining an all-ceramic whitening tooth socket blank body through 3D printing based on tooth socket model data, wherein the all-ceramic whitening tooth socket blank body is formed by forming a support by using a water-soluble support material, and ceramic slurry is sprayed onto the support to be molded; and then cleaning and removing the water-soluble supporting material to obtain the all-ceramic whitening tooth socket blank body after the supporting object is removed.
Step 6, treating the all-ceramic whitening tooth socket blank: and drying, degreasing, sintering and surface treating the all-ceramic whitening tooth socket blank to obtain the all-ceramic whitening tooth socket.
3. The preparation method of the all-ceramic whitening tooth socket according to claim 1, characterized in that: the drawing of the edge line profile in the step 3 is to draw the edge line profile according to the neck edge profile aiming at different tooth positions.
4. The preparation method of the all-ceramic whitening tooth socket according to claim 1, characterized in that: the digital tooth form is selected in step 3 based on the face shape and arch shape of the patient.
5. The preparation method of the all-ceramic whitening tooth socket according to claim 4, characterized in that: the selection of the digital tooth form according to the face form of the patient comprises the following steps: determining smile lines corresponding to the digital tooth forms according with the face forms of the patients according to the original dentition conditions, the natural tooth positions and a calculation formula of the patients; wherein, the smile line formula is:
smile symmetry rate ═ distance from right corner to upper lip midpoint + distance from right corner to lower lip midpoint)/(distance from left corner to upper lip midpoint + distance from left corner to lower lip midpoint).
6. The preparation method of the all-ceramic whitening tooth socket according to claim 4, characterized in that: when the digital tooth form conforming to the dental arch form of the patient is selected, the size and the direction of the digital tooth form conforming to the facial form of the patient are adjusted; when the size of the digital tooth form is adjusted, the thickness of the front tooth is not less than 0.3mm, and the thickness of the back tooth is not less than 0.5 mm.
7. The preparation method of the all-ceramic whitening tooth socket according to claim 1, characterized in that: and (3) after the digital tooth forms are selected in the step (3), trimming each selected digital tooth form by using computer aided design software, and removing occlusion interference points in the digital tooth forms through an occlusion testing function.
8. The preparation method of the all-ceramic whitening tooth socket according to claim 1, characterized in that: the ceramic slurry in the step 5 is a mixed solvent of nano zirconia particle powder, a dispersing agent and a stabilizing agent, and the water-soluble support material is a sodium carbonate nano particle suspension.
9. The preparation method of the all-ceramic whitening tooth socket according to claim 1, characterized in that: and 5, the constant-temperature cleaning for removing the water-soluble supporting material comprises the steps of putting the all-ceramic whitening tooth socket blank into a constant-temperature water tank, and carrying out eddy current circulation cleaning to remove a support formed by the water-soluble supporting material.
10. An all-ceramic whitening tooth socket manufactured according to the manufacturing method of the all-ceramic whitening tooth socket of any one of claims 1-9.
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