CN104688367A - Preparation method of removable denture - Google Patents
Preparation method of removable denture Download PDFInfo
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- CN104688367A CN104688367A CN201510079125.2A CN201510079125A CN104688367A CN 104688367 A CN104688367 A CN 104688367A CN 201510079125 A CN201510079125 A CN 201510079125A CN 104688367 A CN104688367 A CN 104688367A
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Abstract
The invention provides a preparation method of a removable denture. The preparation method is characterized by comprising the following specific steps: 1, preparing a base plate preform body, processing a cavity in a base plate preform block, and processing a first curve surface and a second curve surface at the bottom of the cavity, wherein the first curve surface is a division surface of a base plate and a denture part; and a boundary line of the first curve surface and the second surface is a gingival line; and 2 forming the denture part in the cavity, and processing the base plate preform body into the base plate part. The fussy preparation flow of a dental technician is not needed; a plurality of sets of dentures can be repeatedly produced; and the design requirements of all clinical applications on artificial tooth type can be basically met.
Description
Technical field
The present invention is applicable to that the department of stomatology is clinical makes personalized artificial tooth local and full mouth removable denture for agomphosis patient repairs.
Background technology
As everyone knows, the making of artificial tooth is a traditional repaired by hand technology, it not only needs Dental Technician to have more rich dental clinic Professional knowledge, more need to possess more professional technical ability hand-manipulated, especially denture processing, although its operating equipment is simple, operating procedure is complicated and consuming time longer, thus very easily produce the problems such as occlusion distortion, the technician only possessing suitable operating experience could complete independently all operations process.
In recent years, along with CAD/CAM technology is in the application of dental restorative area, numerous and diverse removable denture dummy is made and becomes simple, the repairing effect that past great master just can produce, present common technician just can realize with nationality CAD/CAM technology, and CAD/CAM technology allows produces perfection and the dummy meeting clinical effectiveness accurately completely becomes a thing easy to learn.Before several years, when CAD/CAM technology has just been introduced into dental restorative area, domestic existing a lot of well-known research institutions and technical magazine conduct in-depth research and report in the application of dental industry CAD/CAM technology, such as, as far back as the Lv Peijun of Peking University School of Stomatology in 2007, the professors such as Wang Yong are just devoted to the research of digital mouth prosthesis making device, and propose and pass through 3-D scanning, CAD/CAM designs, numerical control equipment completes the manufacture method (patent publication No. is: CN101450010 A) of dummy, they illustrating in detail scanning, design and the principle of processing and mode of operation, for CAD/CAM has made huge contribution in the popularization of dental industry, this is have very much advance at that time, but along with technological innovation in recent years, even to this day these three kinds of technology there occurs snafu change, the scanning technique of current employing can realize single pass five faces, each scanning automatic Mosaic, the mode of operation being similar to idiot camera allows everyone easily can complete high accuracy scanning, in software design, the software of the 3Shape company research and development of Denmark has been accomplished numeral row's tooth and has set up virtual occluding relation in software to help denture designing, and this platform is open, the development of numerical control equipment is maked rapid progress especially, CAM machine, CNC engraving machine, the numerical control devices such as 3D printing are simple with it, efficiently, processing characteristic is widely used accurately, in a word, CAD/CAM technology brings revolutionary change to dental restorative area.
But in the making of removable denture personalized artificial tooth, it seems at present, although can the design system process denture of artificial tooth be assisted to arrange and carry out Occlusal adjustment by computer, but the form when practical application owing to being subject to such as commercially available finished product artificial tooth limits and the impact of scale error, the personalization that directly affects 3D printing and CNC processing output post-prosthesis is formed and occlusion degree of accuracy, therefore, present stage removable denture and Complete dentures repair time still need Dental Technician, after the molding of cerul type, artificial tooth is carried out manual arrangement and adjustment.Nonetheless, the artificial tooth that most of case relates to is limited to the technology of Dental Technician, the form of time and commercially available finished product artificial tooth cannot modify the reasons such as expanded application, cannot obtain the individualized therapy effect of approximate natural teeth.
Illustrate the manufacture method that current most of Dental Technician adopts in removable denture and step below:
The making of movable partial denture: 1. first Dental Technician carries out Gypsum Fibrosum filling mould to the die of the agomphosis patient acquired by dentist, turns over and gets gypsum work mould; 2. on Working mould, press the denture designing scheme of dentist, make fixing device (as snap ring, connector, support etc., these fixing devices are mostly that lost-wax casting obtains now) respectively; 3. on Working mould by the denture designing scheme of dentist by place to snap ring, connector, support; 4. on Working mould by the denture designing scheme manufacturing artificial tooth of dentist, artificial tooth be manufactured with two kinds of method: A, by commercially available artificial tooth by form and size mill rebuild decorations suitable after enter (note: the restriction that the use of commercially available finished product artificial tooth is often subject to form cannot be revised and extend to complete personalization) and add cerul holder synthetic wax fundamental mode; B, with wax stone hand engraving artificial tooth (note: this to reach at present personalized operational approach, but need to look the wish of technician, technical level and institute's time spent length etc. on model), add cerul holder synthetic wax fundamental mode; 5. the artificial tooth wax pattern completed on gypsum work mould is placed in dental mechanic flask and carries out Gypsum Fibrosum embedding; 6. will be embedded with artificial tooth wax pattern dental mechanic flask and be placed on dewax in boiling water; 7. the liquid separating agent of coating containing sodium alginate on plaster mold; 8.A method direct filling PMMA artificial tooth base resin; The first filling PMMA acrylic resin teeth of B method then filling PMMA artificial tooth base resin.And carry out after squeezer adds tooth, fastening dental mechanic flask bolt; 9. in water-bath heater, be heated to 100 degree by room temperature, be incubated 1 hour.Naturally cool to room temperature; 10. open dental mechanic flask, take out artificial tooth blank, trimming, polishing, polishing; 11. to try in backed stamper, adjust; 12. deliver dentist.
The making of complete denture: 1. first Dental Technician carries out Gypsum Fibrosum filling mould to the die of the anodontia patient acquired by dentist, turns over and gets gypsum work mould.Plaster mold is the upper jaw or half mouthful, lower jaw according to edentulous jaw situation sometimes; 2. on gypsum work mould, make temporary base-plate (temporary base-plate can be conventional rde wax flakes, Malaya's natural gum temporary base-plate sheet, self-solidifying artificial tooth base resin, photocuring temporary base-plate resin) laying shape of a hoof wax dike; 3. return the Centric relation position relation (articulation registration) measuring Edentulous Cases to dentist; 4. Dental Technician is by fixing on occludator for the plaster mold measuring Centric relation position relation (articulation registration); 5. on occludator, open upper and lower wax dike carry out row's tooth by the line prompting of dentist on wax dike, make cerul type.The at present usually wax dike display that all provides with dentist of technician and text prompt situation select the commercially available artificial tooth of corresponding form and color and luster, row's tooth substantially with no personalization and modification, and everybody is stereotyped, neatly pure white, and false picture is obvious; 6. cerul type is returned to dentist to carry out trying on inspecting in Edentulous Cases mouth; 7. will try on and inspect normal cerul type and carry out final surface and edge moditied processing; 8. the complete denture wax pattern completed on gypsum work mould is placed in dental mechanic flask and carries out Gypsum Fibrosum embedding; 9. will be embedded with complete denture wax pattern dental mechanic flask and be placed on dewax in boiling water; 10. the liquid separating agent of coating containing sodium alginate on plaster mold; 11. filling PMMA artificial tooth base resins, and fastening dental mechanic flask bolt after carrying out squeezer pressurization; 12. are heated to 100 degree by room temperature in water-bath heater, are incubated 2 hours.Naturally cool to room temperature; 13. open dental mechanic flask, take out artificial tooth blank, trimming, polishing, polishing; 14. return occludator tries on, adjusts; 15. deliver dentist.
From the flow process that removable denture presented hereinbefore makes, can find out that the step of technician's routine work is very numerous and diverse, very high to the requirement of operant skill, only special case in the step of the row's for the treatment of tooth, technician is almost difficult to free hand engraving or deliberately revises artificial tooth reach the treatment effect should complying with personalization, and this can't but be a kind of shortcoming to natural beauty.
Existing multinomial technology attempts to change this state before making the present invention, although these technology all try hard to improve in personalized manufacturing artificial tooth, but all there is the obvious gap of actual making effect and the manual traditional fabrication effect of technician, be difficult to promote the use on a large scale.Such as:
1. have to print in conjunction with 3D with CAD designing technique and directly to make personalized artificial tooth, but because of the restriction by printed material, the artificial tooth's poor biocompatibility made, wearability is low, anti-dye is poor, impact strength is low etc., so far clinical practice is not obtained, such as, patent publication No.: the preparation method of the resin tooth mentioned in CN102688106 A.
2. have and commercially available PMMA resin tooth carried out manual adaptation reprocessing, but be subject to the restriction of the original form of commercially available artificial tooth and color and luster, and time-consumingly take a lot of work, such as, Guangdong dental prevention, has just delivered the paper of a section " the personalized manufacture method of removable denture " by name in the 18th volume the 12nd phase periodical.
3. have and make multi-layer-colored artificial tooth and the one-body molded carviag block of base by CAD design injection molding manner, then through CNC cutting forming, adopt carviag block material therefor injection molded in this way in physicochemical property and bio-compatible and safety, whether meet commercially available plastic tooth standard (ISO22112) and artificial tooth base resin standard (ISO 20795-1:2008, IDT) not yet confirmation is obtained, what obtain certification at present and register support take polymethyl methacrylate as the molding mode making tooth and denture base material of raw material is all mold pressing or injection moulding, injection molding manner makes multi-layer-colored artificial tooth in addition and the one-body molded carviag block of base is only the PMMA accumulation of common different colours layer and superposes, artificial tooth add how to make man-hour the gum fate boundary line between artificial tooth and base make a clear distinction between good and evil all do not set forth, if the gum edge line of justing think between the artificial tooth and base of secondary artificial tooth is demarcated fuzzy or chaos that as gingival hemorrhage, wouldn't be embarrassed.Such as, patent publication No.: CN103654981 A just describes so a kind of processing mode.
4. have and nano ceramics resin composite materials is made composite artificial tooth through being layering, also the artificial tooth manufacturing and designing personalized multi-ply construction by CAD is had, but due to the artificial tooth that makes and base material different shaped, therefore the combination of artificial tooth and base need make fixing device separately, considerably increase the difficulty that basal seat area is made, and then have impact on the scope of application and using value, such as, patent publication No.: CN101518469 A and patent publication No.: artificial tooth's preparation method that CN101299973 A mentions.
5. have in base, to copy natural teeth form to make root of the tooth, and the design of artificial tooth is carried out according to the curve of occlusion of tooth, object makes artificial tooth more firm when masticatory movement, but the root of the tooth of artificial tooth can not as natural teeth with tooth one integrated mass, do not possess the physicochemical property of natural teeth, such as contractility and the suitability, therefore which greatly limits the range of application of this technology yet, such as, patent publication No.: the basal seat area preparation method that W020I4159436 A1 mentions.
Current, along with CAD/CAM technology has entered into dentures repai field, the design of area of computer aided Complete dentures (CAD) is become a reality, but how the removable denture applying CAD design is directly carried out automatization and adds the manual steps reducing technician man-hour being committed to, accelerate make efficiency, thus obtain high accuracy artificial tooth, and the aesthetic orthopaedics characteristic of General Promotion artificial tooth and individualized feature, just become a kind of in the urgent need to technology.
Based on this situation, if imagine by now quite ripe CAM technology, the personalized artificial tooth that CAD designs accurately is exported, intactly the artificial tooth in artificial tooth and denture and base all can be formed out, its base of the artificial tooth that this technology molds and artificial tooth are one, (with traditional artificial tooth make first have artificial tooth after do base split technique compared with, integral type artificial tooth can be referred to as temporarily).After the manufacture method advantage of this artificial tooth is that dentist obtains the associated restoration information of patient, do not need to overlap complicated Making programme through technician, just can the manufacturing process (certain dentist also can outsourcing processing center on behalf of completing) of complete independently removable denture, chair gauche form removable denture can be referred to as again and be repaired system.This chair gauche form repairs the integral type artificial tooth that system makes, make fast, base makes a clear distinction between good and evil with the gum edge line of artificial tooth, artificial tooth's personalized designs and the physicochemical property of physicochemical property and commercial resins tooth is close, intensity and traditional artificial tooth consistent, make dentist and patient both sides can obtain the repairing effect be satisfied with.
Summary of the invention
The object of this invention is to provide a kind of manufacture method of removable denture, the artificial tooth that this manufacture method makes and base are one, the gum edge line of base and artificial tooth is made a clear distinction between good and evil, and the physicochemical property of the physicochemical property of artificial tooth and commercial resins tooth is close, obtain the associated restoration information of patient like this dentist after, do not need through the complicated Making programme of technician, the just manufacturing process of energy complete independently removable denture, and the artificial tooth made not only has such as firm, the advantage such as can to copy completely, also remain traditional adopted gingival margin line to greatest extent clearly demarcated, the feature that artificial tooth physicochemical property is all good.
In order to achieve the above object, the invention provides a kind of manufacture method of removable denture, described removable denture comprises base part and is formed in the artificial tooth part on base part, and it is characterized in that, concrete steps comprise:
The first step: make the pre-adult of base, processing cavity on the pre-in bulk of described base, at the bottom of die cavity processing first surface and the second curved surface, described first surface is the separating surface of base part and artificial tooth part, and the boundary line of first surface and the second curved surface is gum edge line;
Second step: form artificial tooth part in described die cavity, and pre-for base adult is processed into base part.
Preferably, the described processing of the bottom at die cavity first surface and the second curved surface, in described die cavity, form artificial tooth part and pre-for base adult is processed into base part and all adopt computer-aided design and manufacture method (CAD/CAM) to design, and export molding with Computerized digital control system (CNC).
More preferably, when designing and process first surface and the second curved surface, gum edge line correspondence is designed to multiple full-length by the model difference according to removable denture, the full-length of the concrete model determination gum edge line of the removable denture selected according to patient, according to the difference at the age of patient, gum edge line correspondence is designed to multiple position, according to the actual age of patient, determines the position of corresponding gum edge line.
Preferably, described processing cavity on the pre-adult of base adopts computer-aided design and manufacture method (CAD/CAM) to design, and exports molding with Computerized digital control system (CNC).
Preferably, the manufacture method of the pre-adult of described base comprises: the metal forming mould making the thick pre-adult of base of 20 ~ 60mm, joins PMMA resin raw material in metal forming mould, hot-forming, obtains the pre-adult of base.
Preferably, the concrete steps of described second step comprise:
Step 1: neck portion manufactured materials is inserted curing molding in die cavity, adopts computer-aided design and manufacture method (CAD/CAM) to carry out the design of personalized neck portion form, and exports the pre-adult in formation neck portion with Computerized digital control system (CNC);
Step 2: dentin manufactured materials is inserted curing molding in die cavity; Adopt computer-aided design and manufacture method (CAD/CAM) to carry out the design of personalized dentin form, and export the pre-adult of formation dentin with Computerized digital control system (CNC), dentin preformation body is formed in the upside of the pre-adult in neck portion;
Step 3: dentium nitor portion colour development material is inserted in die cavity, be wrapped in the outside of the pre-adult in neck portion and the pre-adult of dentin, curing molding, computer-aided design and manufacture method (CAD/CAM) is adopted to carry out personalized designs, and export with Computerized digital control system (CNC), form the pre-adult in dentium nitor portion and base part, the pre-adult in the described pre-adult in neck portion, the pre-adult of dentin and dentium nitor portion forms artificial tooth part, and described artificial tooth part and base part form removable denture.
More preferably, the curing molding in described step 1, step 2 and step 3 adopts mold pressing heating means, and its operating condition is temperature is 110 DEG C-135 DEG C, and pressure is 3-5 MPa, and the time is 5-15 minute.
The present invention requires with an artificial tooth meeting artificial tooth and denture base resin technical standard, and can contain or the pre-adult of preforming PMMA base of lower part or whole artificial teeth as the base component of base, and the cavity that base part forms a similar tooth arrangement shape is simultaneously processed on the pre-adult of this PMMA base, and in this cavity, adopt the processing technology of resin tooth and use mold pressing to be heating and curing and make tooth material, make to make tooth material and the pre-adult of PMMA base is combined as a whole, then with CNC according to design one-shot forming cut the pre-adult of whole base and solidification after make tooth material, form base and artificial tooth, thus just can make upper (lower) jaw artificial tooth, the same artificial tooth of many parafacies can be made by means of this production method of Design of digital, this is unthinkable in traditional dentures repai, patient can have how secondary on all four repair to denture, in case of need.
PMMA resin forming principle and the curing process of application in the forming process of mold pressing basis in the present invention are similar to the technical specification of the PMMA resin forming principle that commercially available PMMA plastic tooth is applied and curing process, therefore the color and luster of its artificial tooth can reach consistent with physicochemical property with the resin tooth of commercially available various technological formings, meets the indices of ISO22112 completely.Became one with the personalized artificial tooth of this technological forming and base, together use as coordinated denture designing software when CAD designs, just can CNC technology be used when CAM exports artificial tooth to be machined together with base, make base and the fully integrated dummy of artificial tooth.Like this, once secondary base and artificial tooth be one, the gum edge line of base and artificial tooth is made a clear distinction between good and evil and the close integral type denture prosthesis of the physicochemical property of the physicochemical property of artificial tooth and commercial resins tooth has completed, not only form is personalized for this artificial tooth, occlusion accurately, and meets patient physiological characteristic completely.
The present invention creatively proposes the following two kinds method by means of statistics, stomatological aesthetics and personalized designs theory in the processing of gum edge line, guarantees that the gum edge line processed is made a clear distinction between good and evil.Different people, the model of the removable denture be suitable for is different, the length of gum edge line is just different from position, same person, periodontal tissue also can atrophy gradually with advancing age, gum edge line position declines, neck portion expose portion increases, so the position of the different age gum edge line of same person is not identical yet, therefore, the full-length of statistics different model gum edge line also adds up the position of the gum edge line of same model different times, on this basis, when patient assessment, can according to the full-length selecting model to confirm gum edge line, then according to the age of patient, confirm the physical location of this model at gum edge line corresponding to this age bracket, the gum edge line designed like this meets the age characteristics of patient, meet the natural beauty theory of stomatological aesthetics, and there is personalization, serve multiple, after determining the length and location of gum edge line, when designing by CAD, in the bottom design of die cavity with gum edge line for datum line extends first surface and the second curved surface, the boundary line of first surface and the second curved surface is gum edge line, described first surface is the separating surface of base part and artificial tooth part, first surface the first half is all artificial tooth part, the latter half is all base part, joint line when the gum edge line that this mode processes guarantees base material and artificial tooth material cured to greatest extent and the gum edge line high superposed between base and artificial tooth, thus guarantee that the gum edge line processed is made a clear distinction between good and evil.
The present invention inserts and commercially availablely makes tooth material in the die cavity processed, adopt the processing technology of resin tooth and the curing molding mode using mold pressing to heat commercially availablely makes tooth material and base is solidified into preform by what insert, commercially available its physicochemical property of tooth material of making that this mode is solidified is similar to commercial resins tooth, computer-aided design and manufacture method (CAD/CAM) is adopted preform to be carried out the design of personalized form, and export with Computerized digital control system (CNC), preform is processed into removable denture, its physicochemical property of artificial tooth that the pre-adult adopting this technique and mode to make processes is closest to commercial resins tooth, this improves aesthetics and the quality of removable denture greatly,
Compared with prior art, the invention has the beneficial effects as follows:
1. the present invention's Making programme of not needing Dental Technician complicated, can duplication of production many covers artificial tooth, and substantially can meet all clinical designing requirements to artificial tooth form;
2. due to acrylic resin teeth solidification adopt resin tooth processing technology and the artificial tooth that the curing molding mode using mold pressing to heat makes has identical physics and chemistry intensity and Se Ze with commercially available artificial tooth;
3., because artificial tooth of the present invention is disjunctor molding, will increase at the surface area of artificial tooth's ridge lap and base contacts, thus substantially increase the adhesion of artificial tooth and base.
4. because artificial tooth and the basal seat area of the present invention's design are integrally, when employing CNC exports, to add man-hour artificial tooth will be integrally with basal seat area gingival margin line completely, can not gap be produced, thus there will not be similar traditional artificial tooth easily problems such as turning black and changing color in gum edge line place initiation oral cavity bacterium attachment;
5. due to the boundary of the gum edge line of base and tooth body make a clear distinction between good and evil, location-appropriate, considerably increase the aesthetics of basal seat area, this is the important symbol of an outstanding basal seat area.
6. owing to being digitized processing so the oral cavity of patient and artificial tooth information can store and export, when patient for various need to make again a secondary artificial tooth form Design identical artificial tooth time, just can pay within very short time.
Accompanying drawing explanation
Fig. 1 is metal forming mould schematic diagram; 1 is mould upper cover, and 2 is mould lower cover, and 3 is mold cavity.
Fig. 2 is the manufacture method schematic diagram of the pre-adult of base; 4 is upper heating panel, and 5 is lower heating panel.
Fig. 3 is the pre-adult structure schematic diagram of base.
Fig. 4 is the structural representation of the base part on the pre-adult of processing base; 6 is the pre-adult of base, and 7 is base part.
Fig. 5 is A-A profile in Fig. 4.
Fig. 6 inserts neck portion manufactured materials schematic diagram in the die cavity formed when processing base.
Fig. 7 is the hot-forming schematic diagram of neck portion manufactured materials; 8 is neck portion manufactured materials.
Fig. 8 is the pre-adult profile in neck portion, and 9 is the pre-adult in neck portion.
Fig. 9 is the pre-adult profile of dentin, and 10 is the pre-adult of dentin.
Figure 10 is the pre-adult profile of neck portion, dentin and enamel; 11 is the pre-adult of enamel.
Figure 11 is full mouth Complete dentures denture and base design sketch.
Figure 12 is B-B profile in Figure 11.
Detailed description of the invention
Below in conjunction with specific embodiment, set forth the present invention further.Should be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.In addition should be understood that those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values fall within the application's appended claims limited range equally after the content of having read the present invention's instruction.
Embodiment, a kind of manufacture method of removable denture, described removable denture comprises base part and is formed in the artificial tooth part on base part, and concrete steps are:
One, the pre-adult 6 of base is made, the pre-adult of described base 6 processes the die cavity 7 of similar tooth arrangement shape, at the bottom of die cavity 7 processing first surface 21 and the second curved surface 22, described first surface 21 is the separating surface of base part and artificial tooth part, the boundary line of first surface 21 and the second curved surface 22 is gum edge line 23, specific as follows:
1. first make one meet artificial tooth base resin technical standard require, and the pre-adult of PMMA base of whole artificial tooth can be contained, its manufacture method is: as shown in Figure 1, make the metal forming mould of the pre-adult of 40mm thick PMMA base, the commercially available artificial tooth base resin powder (main component polymethyl methacrylate) and commercially available artificial tooth base resin liquid (main component methyl methacrylate) that make the pre-adult of base are concocted in polypropylene plastics pocket according to the ratio of weight ratio 2:1, through the reactions of 10 minutes to dough, be filled into according to the profile of the pre-adult of base in the mold cavity 3 making the pre-adult of base, cold press is first used to cold pressing preforming, the pressure setting of cold press is 2 MPas, temperature of colding pressing is 15 DEG C, preforming time of colding pressing is 2 minutes, then compression molding hot press (as shown in Figure 2) is used to use two sections of temperature hot-forming, first paragraph hot pressing temperature is set as 70 DEG C-85 DEG C, pressure setting is 5 MPas, pre-molding 10 minutes, resetting second segment hot pressing temperature is 110 DEG C-135 DEG C, pressure setting is 5 MPas, hot-forming 10 minutes, naturally cool to room temperature, produce the pre-adult 6(of the thick base of 40mm as shown in Figure 3).
2, as shown in Figure 4 and Figure 5, adopt the method design of computer-aided design and manufacture (CAD/CAM), and export with Computerized digital control system (CNC), the pre-adult of described base 6 processes the die cavity 7 of similar tooth arrangement shape, die cavity bottom design and process first surface 21 and the second curved surface 22, described first surface 21 is the separating surface of base part and artificial tooth part, the boundary line of first surface 21 and the second curved surface 22 is gum edge line 23, when designing and process first surface 21 and the second curved surface 22, gum edge line correspondence is designed to multiple full-length by the model difference according to removable denture, the full-length of the concrete model determination gum edge line of the removable denture selected according to patient, according to the difference at the age of patient, gum edge line correspondence is designed to multiple position, according to the actual age of patient, determine the position of corresponding gum edge line.
Two, in described die cavity, form artificial tooth part, and pre-for base adult is processed into base part, specific as follows:
1, the neck portion colour developing commercially available acrylic resin teeth of manufactured materials (main component polymethyl methacrylate) and commercially available dental base acrylic resin liquid (main component methyl methacrylate) are concocted in polypropylene plastics pocket according to the ratio of weight ratio 2:1, through the reactions of 10 minutes to dough, insert in die cavity 7, as shown in Figure 6, with compression molding hot press hot-forming (as shown in Figure 7), temperature is set as 110 DEG C-135 DEG C, pressure setting is 3-5 MPa, hot-press solidifying molding time is set as 10 minutes, room temperature is naturally cooled to after 10 minutes, develop the color pre-in bulk in formation neck portion, adopt computer-aided design and manufacture method (CAD/CAM) to carry out the design of personalized neck portion form, and export with Computerized digital control system (CNC), the pre-in bulk that developed the color in neck portion is processed into the pre-adult 9(in neck portion as shown in Figure 8).
2. curing molding in die cavity inserted by the manufactured materials that developed the color by dentin, forms dentin and to develop the color pre-in bulk; Described dentin colour developing manufactured materials and neck portion develop the color manufactured materials composition and cure process identical; Computer-aided design and manufacture method (CAD/CAM) is adopted to carry out the design of personalized dentin form, and export with Computerized digital control system (CNC), the pre-in bulk that developed the color by dentin is processed into the pre-adult 10 of dentin, and the pre-adult of dentin 10 is formed in the upside of the pre-adult 9 in neck portion;
3, dentium nitor portion colour development material is inserted in die cavity, be wrapped in the outside of the pre-adult in neck portion 9 and the pre-adult 10 of dentin, curing molding, form the pre-adult of removable denture; Described dentium nitor portion colour development material and neck portion develop the color manufactured materials composition and cure process identical; Computer-aided design and manufacture method (CAD/CAM) is adopted to carry out personalized designs, and export with Computerized digital control system (CNC), form the pre-adult 11 in dentium nitor portion and base part 12, the described pre-adult in neck portion 9, the pre-adult 11 of the pre-adult of dentin 10 and dentium nitor portion form artificial tooth part, and described artificial tooth part and base part 12 form removable denture.
The each layer color developing effect of above-mentioned artificial tooth all copies the making of resin tooth to require to design, the different tooth position colour developing hight coordinate accomplish that symmetrical same tooth position colour developing is completely the same, being engaged up and down, and the thickness of the neck portion of each tooth position, tooth our department, each layer in dentium nitor portion can precisely control, the overall color developing effect of artificial tooth can be met like this, personalized designs can be carried out to the local colour developing of partial denture again, meet the requirement of patient to stomatological aesthetics to greatest extent.
Three, post processing is carried out to removable denture, obtain finished product.
Cut off the design connecting rod (usually having 4-6 root) in CNC processing, because cutting tool is very thin, blank artificial tooth dipped beam is sliding, and micro-polishing just can reach clinical requirement.
Like this, complete once the complete denture that secondary form is personalized, meet patient physiological characteristic completely.
Claims (7)
1. a manufacture method for removable denture, described removable denture comprises base part and is formed in the artificial tooth part on base part, and it is characterized in that, concrete steps comprise:
The first step: make the pre-adult of base, processing cavity on the pre-in bulk of described base, at the bottom of die cavity processing first surface and the second curved surface, described first surface is the separating surface of base part and artificial tooth part, and the boundary line of first surface and the second curved surface is gum edge line;
Second step: form artificial tooth part in described die cavity, and pre-for base adult is processed into base part.
2. the manufacture method of removable denture as claimed in claim 1, it is characterized in that, the described processing of the bottom at die cavity first surface and the second curved surface, in described die cavity, form artificial tooth part and pre-for base adult is processed into base part and all adopt computer-aided design and manufacture method (CAD/CAM) to design, and export molding with Computerized digital control system (CNC).
3. the manufacture method of removable denture as claimed in claim 2, it is characterized in that, when designing and process first surface and the second curved surface, gum edge line correspondence is designed to multiple full-length by the model difference according to removable denture, the full-length of the concrete model determination gum edge line of the removable denture selected according to patient, according to the difference at the age of patient, is designed to multiple position by gum edge line correspondence, according to the actual age of patient, determine the position of corresponding gum edge line.
4. the manufacture method of removable denture as claimed in claim 1, it is characterized in that, described processing cavity on the pre-adult of base adopts computer-aided design and manufacture method (CAD/CAM) to design, and exports molding with Computerized digital control system (CNC).
5. the manufacture method of removable denture as claimed in claim 1, it is characterized in that, the manufacture method of the pre-adult of described base comprises: the metal forming mould making the thick pre-adult of base of 20 ~ 60mm, joins PMMA resin raw material in metal forming mould, hot-forming, obtain the pre-adult of base.
6. the manufacture method of removable denture as claimed in claim 1, it is characterized in that, the concrete steps of described second step comprise:
Step 1: neck portion manufactured materials is inserted curing molding in die cavity, adopts computer-aided design and manufacture method (CAD/CAM) to carry out the design of personalized neck portion form, and exports the pre-adult in formation neck portion with Computerized digital control system (CNC);
Step 2: dentin manufactured materials is inserted curing molding in die cavity; Adopt computer-aided design and manufacture method (CAD/CAM) to carry out the design of personalized dentin form, and export the pre-adult of formation dentin with Computerized digital control system (CNC), dentin preformation body is formed in the upside of the pre-adult in neck portion;
Step 3: dentium nitor portion colour development material is inserted in die cavity, be wrapped in the outside of the pre-adult in neck portion and the pre-adult of dentin, curing molding, computer-aided design and manufacture method (CAD/CAM) is adopted to carry out personalized designs, and export with Computerized digital control system (CNC), form the pre-adult in dentium nitor portion and base part, the pre-adult in the described pre-adult in neck portion, the pre-adult of dentin and dentium nitor portion forms artificial tooth part, and described artificial tooth part and base part form removable denture.
7. the manufacture method of removable denture as claimed in claim 6, it is characterized in that, the curing molding in described step 1, step 2 and step 3 adopts mold pressing heating means, and its operating condition is temperature is 110 DEG C-135 DEG C, pressure is 3-5 MPa, and the time is 5-15 minute.
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| EP3275397A1 (en) * | 2016-07-28 | 2018-01-31 | Scott Keating | Real time prosthetic base adaptation |
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| CN107307917A (en) * | 2017-06-01 | 2017-11-03 | 成都贝施美医疗设备有限公司 | A kind of band is layered the artificial tooth forming technique of color |
| EP3654873B1 (en) * | 2017-10-04 | 2023-01-18 | Kulzer GmbH | Monochrome composite milling blocks and method for the production thereof |
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