CN102499765A - Tooth cosmetic veneering method - Google Patents
Tooth cosmetic veneering method Download PDFInfo
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- CN102499765A CN102499765A CN201110349217XA CN201110349217A CN102499765A CN 102499765 A CN102499765 A CN 102499765A CN 201110349217X A CN201110349217X A CN 201110349217XA CN 201110349217 A CN201110349217 A CN 201110349217A CN 102499765 A CN102499765 A CN 102499765A
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Abstract
The invention provides a tooth cosmetic veneering method, which comprises the following steps that: spinels are adopted for porcelain laminate veneering, wherein the veneer thickness can be controlled between 0.5 and 0.8; tooth surfaces are free from being processed, so that painless cosmetology is realized; temporary teeth are free from being worn, so that inconvenience of a person being subject to cosmetology can be reduced; and the tongue side parts of teeth are free from being processed, so that jaw teeth can be effectively protected, and 'foreign body feeling' is free. In the invention, a compound material prepared by a special glass permeation method is adopted, the strength can reach over 400 Mpa after bonding, the durability of the prepared spinel porcelain laminate tooth veneer can reach over 10 years; the prepared spinel porcelain laminate tooth veneer has the optical speciality being the same as that of natural tooth tissues, and has a simulation cosmetic effect; the material has good mechanical and physical properties so as to bear high stress, high acid corrosion resistance, and low heat conduction property so that the tooth body can not be irritated by heating, and no stimulation is caused to teeth pulp when people eat cold and hot food; the material has a self-cleaning capability, so that bacteria are difficult to grow; the X-ray transmission property is good; and the cost is low.
Description
Technical field
The present invention relates to dental prosthetics and repair the field, specifically, is a kind of beauty method that utilizes the full ceramic material of spinelle to do the tooth veneer.
Background technology
Current society, along with growth in the living standard, people have progressively obtained satisfying to the pursuit of material, and increasing is the pursuit of spiritual aspect.Spiritual pursuit is embodied directly on the craving for of U.S.A most; Especially recent years; People not only are confined to face, stature aspect to the location of U.S.A, and the whitening of tooth, health are more paid attention to, and having neat, pure white, the beautiful tooth of a bite is one of modern's ten big healthy signs.Also just therefore, dental prosthetics is also just rising in the oral cavity industry.
For a long time, the variable color of tooth body, especially in, severe tetracycline pigmentation teeth, dental fluorosis, small size bursts apart, teeth space crack and slight denture are uneven etc., and all dental problems are puzzlement all trades and professions personage's a great problems.Tooth staining, common mainly contains two kinds, and a kind of is tetracycline pigmentation teeth, and another kind then is a dental fluorosis.According to statistics, the people of eighties of last century six the seventies birth, it is sorry much all to have stayed lifelong tooth---tetracycline pigmentation teeth.They have to worried for " tooth " throughout one's life.Bring worried dental fluorosis to people equally; Then be owing to geographic reason; Fluorine too high levels in the drinking water, the child seven, eight years old front teeth grow the calcification phase and possibly endanger the ameloblast of dental gram as drinking the too high water of fluorinated volume, thereby cause enamel hypoplasia to form.In the reality because such, such dental problems but lets them quite unexpected in the misery of choosing a job, bring in the choose friends for a lot of patients.Along with the transition of oral cavity technology, from photocuring veneer, the porcelain tooth of the nineties of the eighties technology of whitening to current various oral cavities, just let them see dawn, the full porcelain veneer technology of tooth is rise thereupon also, and becomes most of dental prosthetics persons' selection.
The full porcelain veneer beauty method of spinelle of the present invention is that means are repaired at present up-to-date beauty treatment.Initial surface lining is directly to be bonded on the tooth with the light-cured resin material, and aesthetics and firm degree are all relatively poor, and gingiva is had certain stimulation.The full porcelain veneer that present stomatological hospital is used morely is with full ceramic; Tooth surface to be obtaining good aesthetic before being pasted on through high-strength adhesive, but exists problem (list of references: 1:Y.-G.Jung, I.M.Peterson such as damage tooth, fastness is poor, service life is short equally; A.Pajares; And B.R.Lawn*Contact Damage Resistance and Strength, Degradation of Glass-infiltratedAluminaand Spinel Ceramics, J Dent Res 77 (3): 804-814; March, 1999; With reference to network address: http://j dr.sagepub.com/content/78/3/804; 2, McLarenEA.All-ceramic alternatives to conventional metal-ceramicrestorations.Compend Contin Educ Dent.1998Mar; 19 (3): 307-8,310,312passim; Quiz 326. is with reference to network address http://www.ncbi.nlm.nih.gov/pubmed/9590952/; 3, A.S.Rizkallaa; *; D.W.Jonesb, Mechanical properties of commercial highstrength ceramic core materials, Dental Materials (2004) 20; 207-212 is with reference to network address: http://www.intl.elsevierhealth.com/journals/dema4, " Guangdong dental prevention " Chen Guifeng, Hu Qiurong; 1999 04 phases; The high-temperature behavior test of fire-resistant die material; 5, the selection of full ceramic material hat bridge repair materials is drawn from " international stomatology journal the 37th volume 1-6 page or leaf in January, 2,010 1 phase; The author: West China College of Stomatology Sichuan University's prosthodontics is Meng Yukun; 6, the colorimetry research Color measurement of Vita In-Ceram technical shade guide of In-Ceram osmotic ceramic skilled worker color board; " oral and maxillofacial surgery prosthodontics magazine CHINESE JOURNAL OF PROSTHODONTICS " 2005 the 6th the 1st phases of volume; Author: Yi Yuanfu, Wen Ning, Wang Zhongyi, Tian Jiemo; 7, the permeating method of machinable osmotic ceramic and performance Properties and Infiltration Arts of Machinable Infiltration Ceramic (M IC); " West China stomatology magazine WEST CHINA JOURNAL OF STOMATOLOGY " 2000 the 18th the 3rd phases of volume; Author: Yang He, bright Su Qin, Liao Yunmao, Xue Yuping, bavin maple)
Summary of the invention
In order to solve the deficiency of present oral cavity industry on the tooth facing technology; A kind of dental prosthetics veneer method is provided; Be a kind of beauty method that utilizes the full ceramic material of spinelle to do the tooth veneer, to satisfy the requirements at the higher level of vast beauty treatment person and solidness attractive in appearance, healthy, comfortable to the tooth veneer.
This programme is realized through following technical scheme:
A. cleaning teeth; B. get tooth model; C. colorimetric; D. irritate casting tooth work model with super hard gypsum; E. make the full porcelain veneer of spinelle; (1) makes the plaster die type; The refractory model of using when (2) manufacturing the veneer sintering; (3) prepare the spinelle mixed slurry; (4) the preparation spinelle mixed pulp bed of material; (5) twice sintering of the spinelle mixed pulp bed of material; (6) glass infiltration sintering; (7) remove unnecessary frit: after the spinelle porcelain veneer was come out of the stove, using granularity was the aluminium oxide sandblast removal polishing residual glass material of 50 μ m, the maximum 3Bar of the pressure of aluminium oxide sandblast; (8) revise roast; (9) porcelain on the individual character; F. the full porcelain tooth veneer of bonding spinelle; Accomplish the beauty treatment reparation of the full porcelain veneer of spinelle.
Beneficial effect: a kind of dental prosthetics veneer method of the present invention, adopt the full porcelain veneer beauty method of spinelle, can accomplish to accomplish the beauty treatment of tooth with the veneer THICKNESS CONTROL at 0.5-0.8mm in the situation that need not handle facing, really accomplish painless beauty treatment; Need not wear interim tooth, reduce beauty treatment person's inconvenience to the full extent, shorten the time; The tongue side sections that does not need dental treatments can keep the tooth form of whole tongue sides, has effectively protected the jaw tooth, and tongue touches simultaneously remains not ruined natural teeth, and sense of touch is natural, comfortable, does not have " foreign body sensation ".
The present invention adopts special glass to soak into a kind of composite that method is processed, and its intensity of bonding back reaches more than the 400Mpa, satisfies the requirement of beauty treatment person to veneer high abrasion degree, has prolonged the service life of veneer greatly.
The full ceramic material of spinelle that the present invention uses is compared with traditional surface lining, and more remarkable aesthetic features and excellent biological compatibility are arranged; Promptly do not contain any metal ingredient; The phenomenon of the common gingiva black line of porcelain tooth can never occur, marginal fit property is good, and gingiva can atrophy; Have the optics speciality identical with natural teeth soma, the cosmetic result of emulation no longer includes under light the embarrassment of " blue or green tooth sparkles ", shows best aesthetic effect; Distinctive light transmission had both satisfied the requirement of people to penetrating degree, had also better hidden the dentin color of painted teeth such as tetracycline pigmentation teeth, and its not coloring can make veneer reach permanent aesthetic, satisfy people to requirement attractive in appearance; The favorable mechanical physical characteristic of this material own can be born heavily stressed; The resistance to acid attack property of height; Its low heat conductivity makes the tooth body excitation that can not be heated, and people eat hot and cold food can not cause stimulation to dental pulp, and pathogenic bacteria can't be survived for the self-cleaning ability that itself just has in addition more difficulty, the transmission of X line, plurality of advantages such as low-cost high-efficiency benefit.The durable degree of the full porcelain tooth tooth of the spinelle that method of the present invention is produced veneer can reach more than 10 years.
The specific embodiment
1 one kinds of dental prosthetics veneers of embodiment method:
A. cleaning teeth: polishing rotor is installed on the contra-angle handpiece, dips in and get a little toothpaste beauty treatment person's facing is cleaned;
B. get tooth model: get the 10g tooth family alginate impression material and place the glue bowl, add 23mL water, stir with toolsetting; Obtain the impression material of paste; The impression material of paste evenly is filled in the upper jaw or lower jaw pallet of suitable types, after be put in beauty treatment person's mouth and compress delivery, after the impression material typing of 1-2 minute paste; Formed tooth model in the pallet, the formation that obtains the pallet of tooth model in patient's mouth, take out;
C. colorimetric: color board is placed on beauty treatment person's tooth next door, the color of comparison dentine porcelain, enamel porcelain, if beauty treatment person requires the emulation reparation, some effect porcelain are relatively again selected the color of porcelain powder; Described dentine porcelain is the yellow opaque porcelain powder of imitation natural teeth dentin; The enamel porcelain is the transparent porcelain powder of imitation natural teeth enamel color; The effect porcelain is other color porcelain powder that exceed 26 kinds of colors of color board;
D. irritate casting tooth work model with super hard gypsum: get the 100g super hard gypsum and join in the glue bowl, mix well the super hard gypsum that obtains paste with the 23mL distilled water; The pallet that has formed tooth model is put on the agitator; The super hard gypsum that adds the paste that mixes up from a side of the pallet of this tooth model; Along with making the super hard gypsum of paste, the agitator vibrations flow until being full of pallet; Again the super hard gypsum of paste is increased to apart from treating 3 millimeters of tray edges, treated to take off after the super hard gypsum full solidification of paste, obtain the tooth work model; Described super hard gypsum technical parameter: infusion time 6-8 minute, temperature was 20 ℃; Thixotroping 3-5 minute, can repair time 12-13 minute, after-hardening in 24 hours expands＜0.08, and resistance to compression is ca.62N/mm after 1 hour
2, hardness is ca.320N/mm after 24 hours
2
E. make the full porcelain veneer of spinelle:
(1) make the Gypsum Fibrosum die:
With the equating of Gypsum Fibrosum tooth work model bottom, at all abutments of model and face the bear of tooth, tooth is faced in both sides, and each makes a call to a hole with kind of nailing machine with the Gypsum Fibrosum polisher, and each makes a call to a hole tongue side of abutment and lip side, and the aperture is between 1.7mm-2.7mm; Be coated in the bottom of Gypsum Fibrosum tooth work model to vaseline, fastener bonded in the hole of getting, record the Gypsum Fibrosum base with the super hard gypsum of paste with 502 glue; After 1 hour, super hard gypsum is solid firmly, and the Gypsum Fibrosum tooth on Gypsum Fibrosum tooth and next door of making needs the Gypsum Fibrosum tooth work model of veneer separates so that prepare silicone rubber and duplicates for model; Begin to cut to the incisxal edge direction with saw blade,, break isolated in form Gypsum Fibrosum tooth work model off with the fingers and thumb with hands as for adosculation point place by substrate; And repair Gypsum Fibrosum tooth work model shoulder with bench drill, during the finishing shoulder, pare off 2 millimeters to the Gypsum Fibrosum of shoulder below; Expose the shoulder edge clearly, more accurate when doing veneer, fill and lead up recessed on the Gypsum Fibrosum tooth with wax spatula; And on isolating Gypsum Fibrosum tooth work model, be coated with one deck gypsum hardener, obtain the Gypsum Fibrosum die;
Plaster model is to make the requisite material of mouth mending material; Yet make high-precision dummy; Nearly all gypsum material all is difficult to meet the demands fully at present; Especially at aspects such as case hardness and mar proofs, be coating gypsum surface sclerosing agent and improve these 2 performances method relatively more commonly used; Described gypsum hardener contains epoxy resin and acrylic resin, is Japan Kuraray Medical Treatment Apparatus Co., Ltd's product; (Japan Kuraray Medical Treatment Apparatus Co., Ltd's contact details: address: inner region Japan bridge 3-1-6 Kuraray Japan bridge building 2F in the Tokyo, Japan; Phone: 81-3-3277-6921; Kuraray Shanghai representative office address: No. 918 things of a specified duration in Huai-Hai, Shanghai City road revive D chamber, mansion the 19th building; Phone: 86-21-6415-1146);
Described shoulder: in Oral Repair, the complete crown of tooth do to(for) needs will carry out the tooth preparation, and a circle platform that evenly grinds near the place of gingiva is called shoulder; Even do not do if the shoulder making is not in place, can produce symptoms such as gingival hemorrhage, even cause original corona to rot;
Described recessed: the appearance profile of tooth body, end area and floor space are unequal, or major axis and datum plane out of plumb, i.e. the range differences in the existence axially or the heeling condition of appearance;
The silicone rubber of using when (2) manufacturing the veneer sintering duplicates for model:
Gypsum Fibrosum die bottom is fixed with the special-purpose wax disk(-sc) of tooth section, fixed with plastic ring on every side, plastic ring is from 2 millimeters of dies;, vinyl polysiloxanes impression material, hydrophilic ethylene based polysiloxane impression material is fully admixed together by weight the ratio that is 1: 1, transfer and mix evenly; Pour into and be filled in the plastic ring, solidified then 30 minutes, spraying KKD surface tension is removed liquid on solidified silicone rubber impression; Dry up again, finally obtain silicone rubber and duplicate for model; It is Japanese loose wind Co., Ltd. product that described KKD surface tension is removed liquid, and Japanese loose wind Co., Ltd. address: No. 11, high loose raised path between farm fields on the capital of a country city Dongshan District good fortune rice; China agency: No. 645, Ji Ye road, She Shan industrial occupancy, Songjiang District, Shanghai City, China, phone: 021-57796980.
Pour the 3.3mL distilled water into jar; Add the high temperature resistant 1180 ℃ fire-resistant Gypsum Fibrosum of 15g then, the manual mix homogeneously of elder generation, vacuum machine shook for 20 seconds then; Mixed fire-resistant Gypsum Fibrosum is poured into the silicone rubber that is placed on the agitator duplicate among the Dai Momo, avoid forming bubble; Dabbling fire-resistant Gypsum Fibrosum can the demoulding after at least two hours; Must repair the bottom of the refractory model that obtains after the demoulding and make it smooth; Must keep model dry in the operating process, and with Pencil with 2B hardness edge graticule around the preparation veneer on silicone rubber duplicates for model;
(3) prepare the spinelle mixed slurry: the special-purpose accent of VITA In-Ceram spinelle of in glass, pouring 5mL into mixed liquid; Accurately take by weighing 13.5g VITA In-Ceram spinel powder again; At least divide to add VITA In-Ceram spinel powder to be equipped with to transfer for 3 times and mix in the glass of liquid, add VITA In-Ceram spinel powder at every turn after, glass was placed on the VITASONIK ultrasonic oscillator that frozen water is housed concussion 2 minutes; After all spinel powders are sneaked into; At last glass beaker was put into VITA SONIK ultrasonic oscillator vibration 4 minutes, obtain the spinelle mixed slurry, then with spinelle mixed slurry evacuation 1 minute;
(4) the preparation spinelle mixed pulp bed of material: pour the spinelle mixed slurry that mixes into sealable plastics accent and mix in the cup; And the spinelle mixed slurry is coated in silicone rubber as early as possible duplicates for model surface; The finishing of reuse scalpel; Until the mark line that exposes refractory model, duplicate for the mold surface formation spinelle mixed pulp bed of material at silicone rubber;
(5) twice sintering of the spinelle mixed pulp bed of material: the silicone rubber that will apply the spinelle mixed pulp bed of material duplicates for model and is placed on sintering in the high temperature furnace; Sintering temperature is 1120 ℃ first; 10 hours time, after sintering finishes, duplicate for mold surface formation spinelle overlay coating at silicone rubber; Duplicate from silicone rubber and to take off described spinelle overlay coating for model and be placed on the high temperature cotton, carry out double sintering, sintering temperature is 1180 ℃, and the time is 3 hours; After twice sintering accomplished; Obtain the spinelle veneer that sinters, be placed on the spinelle veneer on the super hard gypsum filling casting tooth work model and try on, with inspection adaptation between the two; And making close fit between the two to making amendment, the thickness of polishing spinelle veneer is to 0.3mm;
(6) glass infiltration sintering: the VITA spinelle with distilled water mediation required color permeates glass dust to thin shape, the ratio of glass dust and water 1: 0.2; Use the porcelain pen applies the 1-2 millimeters thick on the spinelle veneer glass dust, the spinelle veneer inversion that coats glass dust is placed on the platinum sheet, advance stove infiltration sintering, 1140 ℃ of temperature, 1.5 hours time;
Described VITA spinelle infiltration glass dust is unformed hard powder, is produced by German VITA company, and (Photar dental instrument (Shenzhen) company limited Beijing Company is acted on behalf of by German VITA company China; Address: Room 905, No. 2 building of No. 5 ground zero mansions of Haidian District Beijing Changchun bridge circuit; Telephone number: (86-10) 82562662,82562550;
(7) remove unnecessary frit: after the spinelle porcelain veneer was come out of the stove, using granularity was the aluminium oxide sandblast removal polishing residual glass material of 50 μ m, the maximum 3Bar of the pressure of aluminium oxide sandblast;
(8) revise roast: the good spinelle veneer of will polishing is placed on the high temperature cotton and places revises roast at porcelain furnace on the sintering pallet, and the porcelain furnace temperature is 1100 ℃, 10 minutes time, carries out twice at least and revises roast; The purpose of revising roasting is the high temperature through stove, can not come out spraying the glass dust sintering that falls, and the spinelle veneer surface, back of coming out of the stove can present shinny state, and shinny part is carried out blasting treatment once more.
(9) porcelain on the individual character: select the porcelain powder according to the good color of colorimetric, use the porcelain pen and dip in directly one deck of brush 0.2 millimeters thick on veneer of porcelain powder,, advance the stove sintering again with the porcelain powder imitates tooth on veneer tooth body true qualities; 920 ℃ of temperature, sintering 10 minutes, polish with bistrique in sintering cooling back; Outer surface with the liquid coating veneer that imitates natural teeth outermost layer glossiness advances stove again and fires, 920 ℃ of temperature; Sintering 13 minutes carries out clinical trying on then, and is bonding;
F. the full porcelain tooth veneer of bonding spinelle:
1. etching agent evenly is coated in hairbrush on the bonding plane of the full porcelain veneer of spinelle, water washes out behind the acid etching 60s, and the reuse air gun dries up it, obtains the acid etching face;
2. with bonding with inorganic agent and 1: 1 mix homogeneously of porcelain inorganic agent, evenly spread upon with small brushes on the acid etching face of the full porcelain veneer of spinelle;
3. dip in small brushes and get etching agent and spread upon uniformly and treat that water is rinsed etching agent well behind the 10s on the bonding dental surface, with air gun the water on the facing is dried up afterwards;
4. mix at 1: 1 on mixing table with inorganic agent II A liquid and B liquid dentine is bonding, and dip in small brushes and to get mixed liquor, spread upon uniformly on the facing behind the acid etching, and use exsiccant air blow drying, strict exclusion of water and saliva;
5. A cream and the B cream with the composite resin binding agent mixed by 1: 1; With toolsetting with compound spread upon through 1., 2. the step after handling on the acid etching face of the full porcelain veneer of spinelle; After smearing evenly with its with through 3., 4. the tooth of step after handling carries out bondingly, and the bonding agent that bonding process is unnecessary removes;
6. with photosensitive lamp bonding spinelle tooth veneer is shone 20s, it is solidified, accomplish the beauty treatment reparation of the full porcelain veneer of spinelle; Described bonding A cream and B cream, the bonding product that is Japan Kuraray Medical Treatment Apparatus Co., Ltd of dentine with inorganic agent and porcelain inorganic agent, composite resin binding agent with inorganic agent II A liquid and B liquid.
Claims (2)
1. a dental prosthetics veneer method is characterized in that may further comprise the steps: a. cleaning teeth; B. get tooth model; C. colorimetric; D. irritate casting tooth work model with super hard gypsum; E. make the full porcelain veneer of spinelle: (1) makes the plaster die type; The refractory model of using when (2) manufacturing the veneer sintering; (3) prepare the spinelle mixed slurry; (4) the preparation spinelle mixed pulp bed of material; (5) twice sintering of the spinelle mixed pulp bed of material; (6) glass infiltration sintering; (7) remove unnecessary frit: after the spinelle porcelain veneer was come out of the stove, using granularity was the aluminium oxide sandblast removal polishing residual glass material of 50 μ m, the maximum 3Bar of the pressure of aluminium oxide sandblast; (8) revise roast; (9) porcelain on the individual character; F. the full porcelain tooth veneer of bonding spinelle; Accomplished the beauty treatment reparation of the full porcelain veneer of spinelle.
2. a kind of dental prosthetics veneer method as claimed in claim 1 is characterized in that may further comprise the steps: a. cleaning teeth: polishing rotor is installed on the contra-angle handpiece, dips in and get a little toothpaste beauty treatment person's facing is cleaned;
B. get tooth model: get the 10g tooth family alginate impression material and place the glue bowl, add 23mL water, stir with toolsetting; Obtain the impression material of paste; The impression material of paste evenly is filled in the upper jaw or lower jaw pallet of suitable types, after be put in beauty treatment person's mouth and compress delivery, after the impression material typing of 1-2 minute paste; Formed tooth model in the pallet, the formation that obtains the pallet of tooth model in patient's mouth, take out;
C. colorimetric: color board is placed on beauty treatment person's tooth next door, the color of comparison dentine porcelain, enamel porcelain, if beauty treatment person requires the emulation reparation, some effect porcelain are relatively again selected the color of porcelain powder; Described dentine porcelain is the yellow opaque porcelain powder of imitation natural teeth dentin; The enamel porcelain is the transparent porcelain powder of imitation natural teeth enamel color; The effect porcelain is other color porcelain powder that exceed 26 kinds of colors of color board;
D. irritate casting tooth work model with super hard gypsum: get the 100g super hard gypsum and join in the glue bowl, mix well the super hard gypsum that obtains paste with the 23mL distilled water; The pallet that has formed tooth model is put on the agitator; The super hard gypsum that adds the paste that mixes up from a side of the pallet of this tooth model; Along with making the super hard gypsum of paste, the agitator vibrations flow until being full of pallet; Again the super hard gypsum of paste is increased to apart from treating 3 millimeters of tray edges, treated to take off after the super hard gypsum full solidification of paste, obtain the tooth work model; Described super hard gypsum technical parameter: infusion time 6-8 minute, temperature was 20 ℃; Thixotroping 3-5 minute, can repair time 12-13 minute, after-hardening in 24 hours expands＜0.08, and resistance to compression is ca.62N/mm after 1 hour
2, hardness is ca.320N/mm after 24 hours
2
E. make the full porcelain veneer of spinelle:
(1) make the Gypsum Fibrosum die: with the Gypsum Fibrosum polisher with equating bottom the Gypsum Fibrosum tooth work model; With kind of nailing machine at all abutments of model and face the bear of tooth; Tooth is faced in both sides, and each makes a call to a hole, and each makes a call to a hole tongue side of abutment and lip side, and the aperture is between 1.7mm-2.7mm; Be coated in the bottom of Gypsum Fibrosum tooth work model to vaseline, fastener bonded in the hole of getting, record the Gypsum Fibrosum base with the super hard gypsum of paste with 502 glue; After 1 hour, super hard gypsum is solid firmly, and the Gypsum Fibrosum tooth on Gypsum Fibrosum tooth and next door of making needs the Gypsum Fibrosum tooth work model of veneer separates so that prepare silicone rubber and duplicates for model; Begin to cut to the incisxal edge direction with saw blade,, break isolated in form Gypsum Fibrosum tooth work model off with the fingers and thumb with hands as for adosculation point place by substrate; And repair Gypsum Fibrosum tooth work model shoulder with bench drill, during the finishing shoulder, pare off 2 millimeters to the Gypsum Fibrosum of shoulder below; Expose the shoulder edge clearly, more accurate when doing veneer, fill and lead up recessed on the Gypsum Fibrosum tooth with wax spatula; And on isolating Gypsum Fibrosum tooth work model, be coated with one deck gypsum hardener, obtain the Gypsum Fibrosum die;
Described shoulder: in Oral Repair, the complete crown of tooth do to(for) needs will carry out the tooth preparation, and a circle platform that evenly grinds near the place of gingiva is called shoulder;
Described recessed: the appearance profile of tooth body, end area and floor space are unequal, or major axis and datum plane out of plumb, i.e. the range differences in the existence axially or the heeling condition of appearance;
The silicone rubber of using when (2) manufacturing the veneer sintering duplicates for model: Gypsum Fibrosum die bottom is fixed with the special-purpose wax disk(-sc) of tooth section, fixed with plastic ring on every side, plastic ring is from 2 millimeters of dies; Vinyl polysiloxanes impression material, hydrophilic ethylene based polysiloxane impression material is fully admixed together by weight the ratio that is 1: 1, transfer and mix evenly, pour into and be filled in the plastic ring; Solidified then 30 minutes; Spraying KKD surface tension is removed liquid on solidified silicone rubber impression, dries up again, finally obtains silicone rubber and duplicates for model;
Pour the 3.3mL distilled water into jar; Add the high temperature resistant 1180 ℃ fire-resistant Gypsum Fibrosum of 15g then, the manual mix homogeneously of elder generation, vacuum machine shook for 20 seconds then; Mixed fire-resistant Gypsum Fibrosum is poured into the silicone rubber that is placed on the agitator duplicate among the Dai Momo, avoid forming bubble; Dabbling fire-resistant Gypsum Fibrosum can the demoulding after at least two hours; Must repair the bottom of the refractory model that obtains after the demoulding and make it smooth; Must keep model dry in the operating process, and with Pencil with 2B hardness edge graticule around the preparation veneer on silicone rubber duplicates for model;
(3) prepare the spinelle mixed slurry: the special-purpose accent of VITA In-Ceram spinelle of in glass, pouring 5mL into mixed liquid; Accurately take by weighing 13.5g VITA In-Ceram spinel powder again; At least divide to add VITA In-Ceram spinel powder to be equipped with to transfer for 3 times and mix in the glass of liquid, add VITA In-Ceram spinel powder at every turn after, glass was placed on the VITASONIK ultrasonic oscillator that frozen water is housed concussion 2 minutes; After all spinel powders are sneaked into; At last glass beaker was put into VITA SONIK ultrasonic oscillator vibration 4 minutes, obtain the spinelle mixed slurry, then with spinelle mixed slurry evacuation 1 minute;
(4) the preparation spinelle mixed pulp bed of material: pour the spinelle mixed slurry that mixes into sealable plastics accent and mix in the cup; And the spinelle mixed slurry is coated in silicone rubber as early as possible duplicates for model surface; The finishing of reuse scalpel; Until the mark line that exposes refractory model, duplicate for the mold surface formation spinelle mixed pulp bed of material at silicone rubber;
(5) twice sintering of the spinelle mixed pulp bed of material: the silicone rubber that will apply the spinelle mixed pulp bed of material duplicates for model and is placed on sintering in the high temperature furnace; Sintering temperature is 1120 ℃ first; 10 hours time, after sintering finishes, duplicate for mold surface formation spinelle overlay coating at silicone rubber; Duplicate from silicone rubber and to take off described spinelle overlay coating for model and be placed on the high temperature cotton, carry out double sintering, sintering temperature is 1180 ℃, and the time is 3 hours; After twice sintering accomplished; Obtain the spinelle veneer that sinters, be placed on the spinelle veneer on the super hard gypsum filling casting tooth work model and try on, with inspection adaptation between the two; And making close fit between the two to making amendment, the thickness of polishing spinelle veneer is to 0.3mm;
(6) glass infiltration sintering: the VITA spinelle with distilled water mediation required color permeates glass dust to thin shape, the ratio of glass dust and water 1: 0.2; Use the porcelain pen applies the 1-2 millimeters thick on the spinelle veneer glass dust, the spinelle veneer inversion that coats glass dust is placed on the platinum sheet, advance stove infiltration sintering, 1140 ℃ of temperature, 1.5 hours time.
(7) remove unnecessary frit: after the spinelle porcelain veneer was come out of the stove, using granularity was the aluminium oxide sandblast removal polishing residual glass material of 50 μ m, the maximum 3Bar of the pressure of aluminium oxide sandblast;
(8) revise roast: the good spinelle veneer of will polishing is placed on the high temperature cotton and places revises roast at porcelain furnace on the sintering pallet, and the porcelain furnace temperature is 1100 ℃, 10 minutes time, carries out twice at least and revises roast; The purpose of revising roasting is the high temperature through stove, can not come out spraying the glass dust sintering that falls, and the spinelle veneer surface, back of coming out of the stove can present shinny state, and shinny part is carried out blasting treatment once more.
(9) porcelain on the individual character: select the porcelain powder according to the good color of colorimetric, use the porcelain pen and dip in directly one deck of brush 0.2 millimeters thick on veneer of porcelain powder,, advance the stove sintering again with the porcelain powder imitates tooth on veneer tooth body true qualities; 920 ℃ of temperature, sintering 10 minutes, polish with bistrique in sintering cooling back; Outer surface with the liquid coating veneer that imitates natural teeth outermost layer glossiness advances stove again and fires, 920 ℃ of temperature; Sintering 13 minutes carries out clinical trying on then, and is bonding;
F. the full porcelain tooth veneer of bonding spinelle:
1. etching agent evenly is coated in hairbrush on the bonding plane of the full porcelain veneer of spinelle, water washes out behind the acid etching 60s, and the reuse air gun dries up it, obtains the acid etching face;
2. with bonding with inorganic agent and 1: 1 mix homogeneously of porcelain inorganic agent, evenly spread upon with small brushes on the acid etching face of the full porcelain veneer of spinelle;
3. dip in small brushes and get etching agent and spread upon uniformly and treat that water is rinsed etching agent well behind the 10s on the bonding dental surface, with air gun the water on the facing is dried up afterwards;
4. mix at 1: 1 on mixing table with inorganic agent IIA liquid and B liquid dentine is bonding, and dip in small brushes and to get mixed liquor, spread upon uniformly on the facing behind the acid etching, and use exsiccant air blow drying, strict exclusion of water and saliva;
5. A cream and the B cream with the composite resin binding agent mixed by 1: 1; With toolsetting with compound spread upon through 1., 2. the step after handling on the acid etching face of the full porcelain veneer of spinelle; After smearing evenly with its with through 3., 4. the tooth of step after handling carries out bondingly, and the bonding agent that bonding process is unnecessary removes;
6. with photosensitive lamp bonding spinelle tooth veneer is shone 20s, it is solidified, accomplish the beauty treatment reparation of the full porcelain veneer of spinelle.
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