CN116350371A - Occlusion relation remolding method and 3D printing method for adsorptive false tooth - Google Patents
Occlusion relation remolding method and 3D printing method for adsorptive false tooth Download PDFInfo
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- CN116350371A CN116350371A CN202310358625.4A CN202310358625A CN116350371A CN 116350371 A CN116350371 A CN 116350371A CN 202310358625 A CN202310358625 A CN 202310358625A CN 116350371 A CN116350371 A CN 116350371A
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- 230000000274 adsorptive effect Effects 0.000 title claims abstract description 59
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000010146 3D printing Methods 0.000 title claims abstract description 26
- 230000002159 abnormal effect Effects 0.000 claims abstract description 16
- 238000007639 printing Methods 0.000 claims abstract description 14
- 210000004513 dentition Anatomy 0.000 claims description 36
- 230000036346 tooth eruption Effects 0.000 claims description 36
- 210000004763 bicuspid Anatomy 0.000 claims description 12
- 210000003464 cuspid Anatomy 0.000 claims description 9
- 238000003745 diagnosis Methods 0.000 claims description 6
- 210000004283 incisor Anatomy 0.000 claims description 6
- 238000007634 remodeling Methods 0.000 claims description 5
- 238000005266 casting Methods 0.000 claims description 3
- 238000013500 data storage Methods 0.000 claims description 3
- 239000006185 dispersion Substances 0.000 claims description 3
- 229910052602 gypsum Inorganic materials 0.000 claims description 3
- 239000010440 gypsum Substances 0.000 claims description 3
- 239000011505 plaster Substances 0.000 claims description 3
- 210000004357 third molar Anatomy 0.000 claims description 3
- 238000004364 calculation method Methods 0.000 claims 1
- 238000001179 sorption measurement Methods 0.000 abstract description 7
- 238000002360 preparation method Methods 0.000 abstract description 4
- 230000005856 abnormality Effects 0.000 abstract description 3
- 201000010099 disease Diseases 0.000 abstract description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 210000000214 mouth Anatomy 0.000 abstract description 3
- 210000005036 nerve Anatomy 0.000 abstract description 3
- 238000004904 shortening Methods 0.000 abstract 1
- 230000001055 chewing effect Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000000474 nursing effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C13/00—Dental prostheses; Making same
- A61C13/0003—Making bridge-work, inlays, implants or the like
- A61C13/0004—Computer-assisted sizing or machining of dental prostheses
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C13/00—Dental prostheses; Making same
- A61C13/0003—Making bridge-work, inlays, implants or the like
- A61C13/0006—Production methods
- A61C13/0019—Production methods using three dimensional printing
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- 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
- A61C13/225—Fastening prostheses in the mouth
- A61C13/24—Fastening by suction, i.e. total dentures
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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]
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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
- A61C19/04—Measuring instruments specially adapted for dentistry
- A61C19/05—Measuring instruments specially adapted for dentistry for determining occlusion
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
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- Oral & Maxillofacial Surgery (AREA)
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Abstract
The invention discloses a method for remolding the occlusion relation of an adsorptive denture and a 3D printing method, which belong to the technical field of dental restoration preparation, wherein the remolding method is characterized in that the occlusion areas corresponding to different upper teeth are calculated and analyzed, and the occlusion surfaces corresponding to the upper teeth are adjusted on a digital adsorption denture model until the occlusion areas corresponding to the upper teeth are distributed reasonably, so that the problem of obvious occlusion abnormality caused by abnormal occlusion areas of a patient when the corresponding adsorptive denture is used is solved, and then the printing of the adsorptive denture of a finished product is performed, thereby shortening the time for trial wearing adjustment and reducing the risks of oral cavity and nerve diseases caused by improper adjustment of the occlusion relation; in addition, the invention can remarkably improve printing efficiency by integrally printing the partial denture and the denture base, can reduce the manufacturing cost of the adsorptive denture, and can not influence the overall comfort of the adsorptive occlusion denture.
Description
Technical Field
The invention belongs to the technical field of dental restoration preparation, and particularly relates to a method for remolding occlusion relation of an adsorptive false tooth and a 3D printing method.
Background
The adsorptive denture is a complete denture or a half denture, is a very advanced denture repairing method at present, has larger retention area and wider range of base area, can play a good role in edge sealing, thereby obtaining better tooth adsorption force and providing a better tooth nursing mode for patients. After restoration, the chewing efficiency of the teeth is high, and the phenomenon of loosening does not occur.
When the occlusion relation of a patient is remodeled through the adsorptive false tooth, in the process of molding the upper and lower jaw relation and performing trial wearing tooth arrangement, a doctor needs to cooperate with the patient to perform occlusion adjustment on the false tooth structure, so that the patient can quickly adapt to the false tooth, discomfort caused by wearing the adsorptive false tooth is reduced, the adsorptive false tooth can provide an occlusion chewing function as comfortably and reasonably as possible, but the whole trial wearing tooth arrangement and the occlusion surface adjustment period are long, the efficiency is low, and the workload of the occlusion surface adjustment is large.
Disclosure of Invention
The invention aims to provide a method for remolding the occlusion relation of an adsorptive denture and a 3D printing method, which solve the problems of long period, low efficiency and large workload of occlusion surface adjustment of the whole try-on tooth arrangement and occlusion surface adjustment in the prior art.
The aim of the invention can be achieved by the following technical scheme:
a method of reshaping the occlusion relationship of an adsorptive denture comprising the steps of:
s1, preparing an impression, acquiring an intraoral structure of a patient, and casting to obtain a gypsum model according to the prepared impression;
the plaster model corresponds to the intraoral structure of the patient;
s2, determining the upper and lower jaw position relation of a patient, transferring the upper and lower jaw position relation to a working model of the mechanical dental articulator, and scanning the working model through a scanner to obtain a digital model;
designing a virtual diagnosis wax pattern according to the digital model, and after the virtual aesthetic diagnosis wax pattern is checked to achieve mutual protection dentition, performing 3D printing by using 3D printing equipment based on the virtual diagnosis wax pattern to obtain a diagnosis wax pattern, and performing trial wearing and tooth arrangement by using the wax pattern to obtain an adsorptive false tooth model;
s3, scanning the adsorptive denture model through a scanner to obtain a digital adsorptive denture model, and obtaining a denture with an occlusion relationship according to the digital adsorptive denture model, and marking the denture as an occlusion denture;
obtaining a denture without an occlusion relationship, and marking the denture as a fixed denture;
the occlusion relationship refers to that when the upper jaw and the lower jaw are in an occlusion state, the false teeth in the upper dentition are contacted with the teeth in the lower dentition;
s4, acquiring corresponding marks G1, G2, … and Gn of the occlusion dentures of the upper dentition when the digital adsorptive denture model is in an occlusion state of the middle jaw;
the corresponding occlusion area of the occlusion denture Gi is denoted Ri,
the occlusion area Ri of the occlusion denture Gi is the sum of the areas of independent contact surfaces between the occlusion denture Gi and the occlusion denture corresponding to the lower dentition;
wherein i is more than or equal to 1 and less than or equal to n;
s5, when Ri is less than or equal to rip, considering that the occlusion relation of the corresponding occlusion false tooth Gi is abnormal, wherein θ is a preset value smaller than 1;
according to the formula
Calculating to obtain a fitting coefficient gamma of the corresponding digital adsorptivity denture model;
rx is the sum of the absolute value of the maximum value and the absolute value of the minimum value in Ri-rip;
the rip is the reference occlusion area of the occlusion denture corresponding to the upper dentition by Ri;
s6, adjusting the occlusion surface of the occlusion denture Gi with abnormal occlusion relation and the corresponding tooth in the lower dentition in the digital adsorptivity denture model until the corresponding fitting coefficient gamma is smaller than or equal to a preset value;
based on the adjusted digital adsorptivity denture model, 3D printing of the corresponding adsorptivity denture is performed through 3D printing equipment, so that the adsorptivity denture is obtained.
And S7, performing trial wearing and adjustment on the adsorptive denture to obtain the final adsorptive denture.
As a further aspect of the present invention, the number of the occlusion contact surfaces corresponding to the occlusion denture Gi is Qi;
the number Qi of the occlusion contact surfaces corresponding to the occlusion denture Gi is the number of independent contact surfaces existing between the occlusion surfaces of the occlusion denture Gi and the occlusion denture corresponding to the lower dentition, and any two independent contact surfaces are not contacted with each other.
As a further scheme of the invention, when Qi is less than or equal to Qy, the occlusion relation of the corresponding occlusion denture Gi is considered to be abnormal;
the Qy is a value preset according to the category of the occlusion denture Gi, wherein the category comprises incisors, cuspids, premolars and molars;
as a further aspect of the present invention, the premolars have a Qy value of 2 corresponding to molar teeth;
the Qy value of the incisors corresponding to the cuspids is 1.
As a further aspect of the present invention, the method for calculating the reference occlusion area rip of the denture corresponding to the upper dentition occlusion is as follows:
reading an occlusion area coefficient r corresponding to each upper dentition occlusion denture with a corresponding name in a digital model of the adsorptive denture with the occlusion relationship remodelling completed stored in the data storage module;
for the upper dentition occlusion false tooth with the same name, the corresponding occlusion area coefficients are marked as r1, r2, … and rn in sequence;
the occlusal area coefficient ri is the occlusal area of the corresponding tooth divided by the volume of the corresponding tooth;
according to the formula
Calculating to obtain a dispersion coefficient mu of the group of parameters r1 to rn;
if mu is more than or equal to mu y, deleting the corresponding ri values in sequence from larger to smaller according to the |ri-rp| until mu is less than mu y, calculating an average value rip of the remaining un-deleted ri values at the moment, and taking rip as a reference occlusion area of the corresponding upper dentition occlusion false tooth;
wherein b1 is a preset value, rp= (r1+r2+, …, +rn).
As a further aspect of the present invention, the designation of the tooth includes a center cut tooth, a side cut tooth, a cuspid tooth, a first premolars tooth, a second premolars tooth, a first molar tooth, a second molar tooth, and a third molar tooth.
The invention also discloses a 3D printing method of the adsorptive denture, which comprises the steps of integrally printing the denture base and the corresponding fixed denture through 3D printing equipment after the adjusted digital adsorptive denture model is obtained;
printing the occlusion false tooth singly through 3D printing equipment;
the occlusion denture is fixed on the denture base to form the shaped adsorptive denture.
The invention has the beneficial effects that:
1. according to the invention, through calculating and analyzing the corresponding occlusion areas of different upper teeth, and adjusting the corresponding occlusion surfaces of each upper tooth on the digital adsorption denture model, until the corresponding occlusion areas of each upper tooth are distributed reasonably, the problem that obvious occlusion abnormality exists when a patient uses the corresponding adsorption denture due to the abnormality of the occlusion areas is avoided, and then printing of the finished adsorption denture is performed, so that the time of trial wearing adjustment can be shortened, and the risks of oral cavity and nerve diseases caused by improper adjustment of the occlusion relation are reduced;
2. the number of the occlusion contact surfaces of the partial denture can be analyzed, so that the abnormal upper denture and the abnormal lower denture corresponding to the abnormal upper denture can be obtained rapidly, and the corresponding treatment is carried out, so that the adjustment period of the adsorptive denture model is effectively reduced, and the preparation efficiency of the adsorptive denture is improved;
3. according to the invention, the printing efficiency can be remarkably improved by integrally printing the partial denture and the denture base, meanwhile, the manufacturing cost of the adsorptive denture can be reduced, and the overall comfort of the adsorptive occlusion denture is not influenced.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments 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.
A method of reshaping the occlusion relationship of an adsorptive denture comprising:
s1, preparing an impression, acquiring an intraoral structure of a patient, and casting to obtain a gypsum model according to the prepared impression;
the plaster model corresponds to the intraoral structure of the patient;
s2, determining the upper and lower jaw position relation of a patient, transferring the upper and lower jaw position relation to a working model of the mechanical dental articulator, and scanning the working model through a scanner to obtain a digital model;
designing a virtual diagnosis wax pattern according to the digital model, and after the virtual aesthetic diagnosis wax pattern is checked to achieve mutual protection dentition, performing 3D printing by using 3D printing equipment based on the virtual diagnosis wax pattern to obtain a diagnosis wax pattern, and performing trial wearing and tooth arrangement by using the wax pattern to obtain an adsorptive false tooth model;
s3, scanning the adsorptive denture model through a scanner to obtain a digital adsorptive denture model, and obtaining a denture with an occlusion relationship according to the digital adsorptive denture model, and marking the denture as an occlusion denture;
obtaining a denture without an occlusion relationship, and marking the denture as a fixed denture;
the occlusion relationship refers to that when the upper jaw and the lower jaw are in an occlusion state, the false teeth in the upper dentition are contacted with the teeth in the lower dentition;
s4, acquiring corresponding marks G1, G2, … and Gn of the occlusion dentures of the upper dentition when the digital adsorptive denture model is in an occlusion state of the middle jaw;
marking the occlusion area corresponding to the occlusion denture Gi as Ri, and marking the number of occlusion contact surfaces corresponding to the occlusion denture Gi as Qi;
in one embodiment of the present invention, the method for calculating the occlusion area corresponding to the occlusion denture Gi includes:
measuring a contact area of the tooth by fitting a 3D curved surface of the tooth surface to an ideal shape;
the surface of the tooth contact area is gridded to divide it into a plurality of small triangles. Calculating the area of each small triangle, and overlapping the areas of all the small triangles to obtain the occlusion area of the tooth;
the number Qi of the occlusion contact surfaces corresponding to the occlusion denture Gi refers to the number of independent contact surfaces existing between the occlusion surfaces of the occlusion denture Gi and the occlusion denture corresponding to the lower dentition, and any two independent contact surfaces are not contacted with each other;
the occlusion area Ri of the occlusion denture Gi is the sum of the areas of independent contact surfaces between the occlusion denture Gi and the occlusion denture corresponding to the lower dentition;
wherein i is more than or equal to 1 and less than or equal to n;
the number of the occlusion dentures Gi corresponding to the lower dentition may be one or two;
when Qi is less than or equal to Qy, the occlusion relationship of the corresponding occlusion denture Gi is considered to be abnormal;
the Qy is a value preset according to the category of the occlusion denture Gi, wherein the category comprises incisors, cuspids, premolars and molars;
in one embodiment of the invention, the Qy value is 2 for premolars and molars;
for incisors and cuspids, the Qy value is 1;
in the step, the abnormal upper denture and the corresponding lower denture can be obtained rapidly by analyzing the number of the occlusal contact surfaces of the partial dentures, and the corresponding treatment is carried out, so that the period of adjusting the adsorptive denture model is effectively reduced, and the preparation efficiency of the adsorptive denture is improved;
s4, reading the occlusion area coefficient r corresponding to the upper dentition occlusion false tooth of each corresponding name in the digital model of the adsorptive false tooth which is stored in the data storage module and completes occlusion relation remodeling;
for the upper dentition occlusion false tooth with the same name, the corresponding occlusion area coefficients are marked as r1, r2, … and rn in sequence;
the occlusion area coefficient ri is the occlusion area of the corresponding tooth divided by the volume of the corresponding tooth;
according to the formula
Calculating to obtain a dispersion coefficient mu of the group of parameters r1 to rn;
if mu is more than or equal to mu y, deleting the corresponding ri values in sequence from larger to smaller according to the |ri-rp| until mu is less than mu y, calculating an average value rip of the remaining un-deleted ri values at the moment, and taking rip as a reference occlusion area of the corresponding upper dentition occlusion false tooth;
wherein b1 is a preset value, rp= (r1+r2+, …, +rn);
calculating and obtaining the reference occlusion area of the upper dentition occlusion false tooth of each name;
the names of the teeth comprise a middle cutting tooth, a side cutting tooth, a cuspid tooth, a first premolars tooth, a second premolars tooth, a first molar tooth, a second molar tooth and a third molar tooth;
s5, when Ri is less than or equal to rip, considering that the occlusion relation of the corresponding occlusion false tooth Gi is abnormal, wherein θ is a preset value smaller than 1;
according to the formula
Calculating to obtain corresponding digital adsorptionFitting coefficient gamma of the artificial tooth model;
wherein Rx is the sum of the absolute value of the maximum value and the absolute value of the minimum value in Ri-rip;
s6, adjusting the occlusion surface of the occlusion denture Gi with abnormal occlusion relation and the corresponding tooth in the lower dentition in the digital adsorptivity denture model until the corresponding fitting coefficient gamma is smaller than or equal to a preset value;
and then, based on the adjusted digital adsorptivity denture model, 3D printing of the corresponding adsorptivity denture is performed through 3D printing equipment, so that the adsorptivity denture is obtained.
And S7, performing trial wearing and adjustment on the adsorptive denture to obtain the final adsorptive denture.
According to the method, the occlusion areas corresponding to different upper teeth are calculated and analyzed, and the occlusion surfaces corresponding to the upper teeth are adjusted on the digital adsorption denture model until the occlusion areas corresponding to the upper teeth are reasonably distributed, so that the problem that a patient has obvious abnormal occlusion when using the corresponding adsorption denture due to abnormal occlusion areas is solved, the time for trial wearing adjustment can be shortened, and the risks of oral cavity and nerve diseases caused by improper occlusion relation adjustment are reduced.
The invention also discloses a 3D printing method of the adsorptive false tooth, which comprises the following steps:
acquiring the digital adsorptivity denture model adjusted in the step S6;
printing the denture base and the corresponding fixed denture in an integrated way through 3D printing equipment;
printing the occlusion false tooth singly through 3D printing equipment;
the occlusion denture is fixed on the denture base to form the shaped adsorptive denture.
The printing mode can remarkably improve printing efficiency by integrally printing the partial false teeth and the false tooth base, can reduce the manufacturing cost of the adsorptive false teeth, and can not influence the overall comfort of the adsorptive occlusion false teeth;
in the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is merely illustrative and explanatory of the invention, as various modifications and additions may be made to the particular embodiments described, or in a similar manner, by those skilled in the art, without departing from the scope of the invention or exceeding the scope of the invention as defined in the claims.
Claims (7)
1. A method of reshaping the occlusion relationship of an adsorptive denture comprising the steps of:
s1, preparing an impression, acquiring an intraoral structure of a patient, and casting to obtain a gypsum model according to the prepared impression;
the plaster model corresponds to the intraoral structure of the patient;
s2, determining the upper and lower jaw position relation of a patient, transferring the upper and lower jaw position relation to a working model of the mechanical dental articulator, and scanning the working model through a scanner to obtain a digital model;
designing a virtual diagnosis wax pattern according to the digital model, and after the virtual aesthetic diagnosis wax pattern is checked to achieve mutual protection dentition, performing 3D printing by using 3D printing equipment based on the virtual diagnosis wax pattern to obtain a diagnosis wax pattern, and performing trial wearing and tooth arrangement by using the wax pattern to obtain an adsorptive false tooth model;
s3, scanning the adsorptive denture model through a scanner to obtain a digital adsorptive denture model, and obtaining a denture with an occlusion relationship according to the digital adsorptive denture model, and marking the denture as an occlusion denture;
obtaining a denture without an occlusion relationship, and marking the denture as a fixed denture;
the occlusion relationship refers to that when the upper jaw and the lower jaw are in an occlusion state, the false teeth in the upper dentition are contacted with the teeth in the lower dentition;
s4, acquiring corresponding marks G1, G2, … and Gn of the occlusion dentures of the upper dentition when the digital adsorptive denture model is in an occlusion state of the middle jaw;
the corresponding occlusion area of the occlusion denture Gi is denoted Ri,
the occlusion area Ri of the occlusion denture Gi is the sum of the areas of independent contact surfaces between the occlusion denture Gi and the occlusion denture corresponding to the lower dentition;
wherein i is more than or equal to 1 and less than or equal to n;
s5, when Ri is less than or equal to rip, considering that the occlusion relation of the corresponding occlusion false tooth Gi is abnormal, wherein θ is a preset value smaller than 1;
according to the formula
Calculating to obtain a fitting coefficient gamma of the corresponding digital adsorptivity denture model;
rx is the sum of the absolute value of the maximum value and the absolute value of the minimum value in Ri-rip;
the rip is the reference occlusion area of the occlusion denture corresponding to the upper dentition by Ri;
s6, adjusting the occlusion surface of the occlusion denture Gi with abnormal occlusion relation and the corresponding tooth in the lower dentition in the digital adsorptivity denture model until the corresponding fitting coefficient gamma is smaller than or equal to a preset value;
based on the adjusted digital adsorptivity denture model, 3D printing of the corresponding adsorptivity denture is performed through 3D printing equipment, so that the adsorptivity denture is obtained.
And S7, performing trial wearing and adjustment on the adsorptive denture to obtain the final adsorptive denture.
2. The method for dental occlusion relation remodeling of an adsorptive denture according to claim 1, wherein the number of occlusion contact surfaces corresponding to said occlusion denture Gi is Qi;
the number Qi of the occlusion contact surfaces corresponding to the occlusion denture Gi is the number of independent contact surfaces existing between the occlusion surfaces of the occlusion denture Gi and the occlusion denture corresponding to the lower dentition, and any two independent contact surfaces are not contacted with each other.
3. The method for dental occlusion remodeling according to claim 2, wherein when Qi is equal to or less than Qy, the dental occlusion of the dental occlusion Gi is considered to be abnormal;
the Qy is a value preset according to the category to which the occlusion denture Gi belongs, including incisors, cuspids, premolars, and molars.
4. A method of dental occlusion remodeling according to claim 3, wherein said premolars and molars have a Qy value of 2;
the Qy value of the incisors corresponding to the cuspids is 1.
5. The method for reshaping an occlusion relationship of an adsorptive denture according to claim 1, wherein the calculation method of the reference occlusion area rip of the denture corresponding to the upper dentition occlusion denture is as follows:
reading an occlusion area coefficient r corresponding to each upper dentition occlusion denture with a corresponding name in a digital model of the adsorptive denture with the occlusion relationship remodelling completed stored in the data storage module;
for the upper dentition occlusion false tooth with the same name, the corresponding occlusion area coefficients are marked as r1, r2, … and rn in sequence;
the occlusal area coefficient ri is the occlusal area of the corresponding tooth divided by the volume of the corresponding tooth;
according to the formula
Calculating to obtain a dispersion coefficient mu of the group of parameters r1 to rn;
if mu is more than or equal to mu y, deleting the corresponding ri values in sequence from larger to smaller according to the |ri-rp| until mu is less than mu y, calculating an average value rip of the remaining un-deleted ri values at the moment, and taking rip as a reference occlusion area of the corresponding upper dentition occlusion false tooth;
wherein b1 is a preset value, rp= (r1+r2+, …, +rn).
6. The method of claim 5, wherein the dental designations include center cut, side cut, cuspid, first premolars, second premolars, first molars, second molars, and third molars.
7. A 3D printing method of an adsorptive denture, characterized in that after an adjusted digital adsorptive denture model is obtained by the occlusion relationship remodeling method of an adsorptive denture according to any one of claims 1 to 6, a denture base and a corresponding fixed denture are integrally printed by a 3D printing device;
printing the occlusion false tooth singly through 3D printing equipment;
the occlusion denture is fixed on the denture base to form the shaped adsorptive denture.
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| CN111150507A (en) * | 2020-01-19 | 2020-05-15 | 四川大学 | Method for transferring occlusion relation and morphological design in dental occlusion reconstruction restoration |
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| CN114917046A (en) * | 2022-05-23 | 2022-08-19 | 万善军 | Method for making digital movable complete denture |
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