CN112155764A - Method for instantly repairing teeth in oral cavity - Google Patents
Method for instantly repairing teeth in oral cavity Download PDFInfo
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- CN112155764A CN112155764A CN202010787619.7A CN202010787619A CN112155764A CN 112155764 A CN112155764 A CN 112155764A CN 202010787619 A CN202010787619 A CN 202010787619A CN 112155764 A CN112155764 A CN 112155764A
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- tooth
- implant
- prefabricated
- teeth
- gum
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- 210000000214 mouth Anatomy 0.000 title claims abstract description 33
- 239000007943 implant Substances 0.000 claims abstract description 94
- 238000005516 engineering process Methods 0.000 claims abstract description 11
- 238000009434 installation Methods 0.000 claims description 36
- 238000005498 polishing Methods 0.000 claims description 33
- 238000007639 printing Methods 0.000 claims description 23
- 239000000899 Gutta-Percha Substances 0.000 claims description 20
- 240000000342 Palaquium gutta Species 0.000 claims description 20
- 229920000588 gutta-percha Polymers 0.000 claims description 20
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 14
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 14
- 238000012545 processing Methods 0.000 claims description 13
- 238000010146 3D printing Methods 0.000 claims description 12
- 238000002360 preparation method Methods 0.000 claims description 11
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 10
- 239000002131 composite material Substances 0.000 claims description 10
- 238000012937 correction Methods 0.000 claims description 10
- 239000003822 epoxy resin Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 10
- 229920000647 polyepoxide Polymers 0.000 claims description 10
- 238000007408 cone-beam computed tomography Methods 0.000 claims description 7
- 239000011787 zinc oxide Substances 0.000 claims description 7
- 230000007547 defect Effects 0.000 claims description 6
- 238000012986 modification Methods 0.000 claims description 6
- 230000004048 modification Effects 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 238000005553 drilling Methods 0.000 claims description 5
- 239000010419 fine particle Substances 0.000 claims description 5
- 210000004195 gingiva Anatomy 0.000 claims description 5
- 238000007493 shaping process Methods 0.000 claims description 5
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 5
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 5
- 229920001971 elastomer Polymers 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 3
- 229940034610 toothpaste Drugs 0.000 claims description 3
- 239000000606 toothpaste Substances 0.000 claims description 3
- 230000008439 repair process Effects 0.000 abstract description 9
- 239000000853 adhesive Substances 0.000 description 14
- 230000001070 adhesive effect Effects 0.000 description 14
- 238000004519 manufacturing process Methods 0.000 description 7
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- 241000183024 Populus tremula Species 0.000 description 4
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- 238000010438 heat treatment Methods 0.000 description 4
- 230000001055 chewing effect Effects 0.000 description 3
- 229920005749 polyurethane resin Polymers 0.000 description 3
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 2
- 206010061218 Inflammation Diseases 0.000 description 2
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- 208000037408 Device failure Diseases 0.000 description 1
- 206010067482 No adverse event Diseases 0.000 description 1
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Images
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
-
- A61B6/51—
-
- 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
-
- 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
-
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
- A61C8/0089—Implanting tools or instruments
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
- A61C2008/0084—Provisional implants or abutments
Abstract
The invention provides a method for instantly repairing teeth in an oral cavity, wherein a doctor implants an implant on a gum at teeth needing to be repaired in the oral cavity, a scanning rod capable of being detected by modern three-dimensional scanning is installed at the upper part of the implant, then the three-dimensional position of the implant is determined by positioning a prefabricated tooth in the mouth of a patient and the position of the scanning rod, the prefabricated tooth is designed and restored according to the three-dimensional position of the implant and the shape of the prefabricated tooth, the prefabricated tooth is manufactured by a CNC (computer numerical control) technology, and finally the prefabricated tooth is installed in the oral cavity, so that the rapid and instant repair of the teeth is realized. The method has no damage to the gum of the patient, the prefabricated teeth are perfectly matched with the gum, the gum can be effectively protected, and the perfect matching during replacement of the false tooth is finally realized.
Description
Technical Field
The invention relates to the technical field of intraoral tooth repair, in particular to an intraoral tooth immediate repair method.
Background
At present, a dental hospital or a dental clinic repairs or inlays teeth, which all involve a series of operation steps or methods, and all require that a patient who visits before can complete the denture repair from the oral examination, basic preparation and temporary denture fabrication until one to two weeks are passed.
In the instant implantation and instant repair, the traditional temporary tooth manufacturing process comprises the following steps: taking a mold in the oral cavity of a patient, manually stacking and molding temporary teeth on the mold by using resin after the mold is made of a quick solidification material, putting the temporary teeth into the oral cavity of the patient after polishing, and continuously adjusting the temporary teeth according to the gingival shape of the patient until a more ideal gingival penetrating shape is obtained. In such a conventional temporary tooth making process, there are several disadvantages: firstly, when temporary teeth are manually piled and molded, the gum penetrating outline is not controllable; secondly, the operation time in the oral cavity of the patient is long, the patient and medical staff are tired, and the operation is inconvenient; thirdly, poor polishing usually occurs in the tooth trimming process, and the gum of a patient is injured, so that bacterial plaque is easy to adhere to the gum, and inflammation is induced; fourthly, the temporary teeth manufactured by the method are not easy to disinfect and are easy to cause infection. Poor polishing and sterilization conditions are likely to cause poor healing of the implant area and even cause early inflammation of the implant leading to implant failure. While the gingival penetration profile is not controllable, the position and the shape of the gingival margin are not ideal, and a good aesthetic repairing effect is difficult to obtain. Meanwhile, the conventional dental insertion method has a long period, so that the patient spends a lot of time in visiting a doctor, and repeated damage to the gum occurs, and there are problems in that the gum is shrunk and deformed during the period from the time when the patient uses the prefabricated teeth to the time when the denture is finally installed. Therefore, the invention provides an immediate restoration method for teeth in the oral cavity, which can quickly restore the teeth of a patient.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide an immediate restoration method for teeth in an oral cavity, which comprises the steps of pre-installing an implant which can be detected by modern three-dimensional scanning at the teeth needing to be restored in the oral cavity, then scanning and positioning the implant, restoring the shape of the prefabricated teeth, manufacturing the prefabricated teeth by numerical treatment and a rapid forming technology, and finally installing the prefabricated teeth so as to realize rapid and immediate restoration. The method has no damage to the gum of the patient, the prefabricated teeth are perfectly matched with the gum, the gum can be effectively protected, and the perfect matching during replacement of the false tooth is finally realized.
In order to achieve the above object, the present invention provides an immediate restoration method of an intraoral tooth, the method comprising the steps of:
s1 gum implant: pretreating the teeth which are fallen off or need to be replaced in the oral cavity of a patient, drilling a cavity for installing an implant on a teethridge, and implanting the implant into the teethridge cavity; the implant comprises a first installation part, an outer boss and a second installation part, wherein the first installation part and the second installation part are distributed at two ends of the outer boss, a connection surface is arranged between the outer boss and the second installation part, and the first installation part is installed in the cavity;
s2 installing a scanning rod on the implant: installing a scanning rod on the upper part of the implant, and confirming the installation tightness between the scanning rod and the implant by using a Cone beam scanning imager (Cone beam CT, CBCT for short); when the scanning rod is used, the scanning rod is arranged on the mounting part II; after the scanning rod is used, the scanning rod is detached from the mounting part II;
the S3 scanner scans teeth and scanning bar: scanning the space shape of the tooth and a scanning rod at the upper part of the implant by using an intraoral scanner to obtain the shape structure of the tooth defect and the position of the scanning rod, and forming digital model data in STL or DICOM format;
s4 tooth software design processing: importing the model data in STL or DICOM format obtained in step S3 into 3SHAPE software, and processing the positions of the gum and the implant in three-dimensional structure and the concave SHAPE of the teeth in the 3SHAPE software according to the model data; thereby obtaining the tooth concave shape of the prefabricated tooth and the position composite model data of the implant on the gum;
s5 prefabricated tooth preparation: printing and shaping the prefabricated teeth and the mounting holes of the prefabricated teeth by applying a 3D printing technology according to the position composite model data of the step S4, or engraving the prefabricated teeth and the mounting holes of the prefabricated teeth by using CNC;
s6 prefabricated dental preparation: performing fine polishing and surface shape modification on the prefabricated teeth obtained in the step S5;
s7 prefabricated tooth bonding: mounting a prefabricated temporary abutment prepared in advance in a mounting hole of the prefabricated tooth to obtain a prefabricated tooth with the temporary abutment, wherein the mounting hole and the temporary abutment are bonded by using an adhesive to obtain a restoration body integrating the temporary abutment and the prefabricated tooth, and the rest part of the mounting hole is filled with a closure;
s8 prefabricated tooth installation: mounting the prosthesis in the step S7 on the implant in a mode of bonding by using an adhesive or in a threaded manner;
s9 prefabricated teeth correction: after the prosthesis is implanted into the oral cavity of a patient, the fitting degree of the prosthesis and the periphery of the implant with other teeth is checked, and slight fine polishing correction is carried out to finish immediate repair.
Preferably, the implant and the temporary abutment are standard components manufactured in advance, and the materials are medical stainless steel, titanium alloy, nylon or polyurethane resin. The material has high mechanical strength while having good corrosion resistance, can be used for a long time after being arranged in a dental bed, and avoids the need of replacing the implant again in the subsequent replacement of false teeth market, thereby reducing the frequency and cost of patient treatment.
Preferably, the length of the first installation part of the implant is greater than that of the second installation part, and the length of the first installation part is 6-9 mm; the length value of the second mounting part is 3-5 mm; the connecting surface is a conical surface, the processing is convenient, the connecting surface is matched with the temporary base station completely, the appearance of the second mounting part is rectangular, square or hexagonal, and the structure is convenient to clamp by using a pliers during dismounting.
Preferably, the temporary abutment edge has a shape consistent with the jaw arch shape and is attached to the gum surface; the temporary abutment covers the gingiva; the temporary base station is 0.5-2.5 mm in coverage thickness.
Preferably, the 3D printing or CNC engraving material in the step S5 is medical epoxy resin, the printing speed is 0.2-1 m/S, the printing power is 200-300W, and the printing resolution is 30-60 μm;
preferably, the polishing agent for fine polishing in step S6 is sodium bicarbonate fine particles or toothpaste or tooth powder, the rotation speed of the polisher for fine polishing is 15-35 rpm, and the polishing wheel of the polisher is a rubber wheel or a silk wheel;
preferably, in the step S7, the sealer is a resin gutta-percha point, and the gutta-percha point is composed of 92% -97% of gutta-percha, 2% -4% of zinc oxide and 1% -3% of barium sulfate by mass; the gutta-percha tip has good plasticity, can be softened by heating, can be hardened by cooling, is tightly filled, and has good tissue affinity.
Preferably, the adhesive used in steps S7 and S8 is an epoxy resin, a phenolic resin, or a polyurethane thermosetting adhesive, such as 3M ESPE RelyX U200.
Compared with the prior art, the invention has the following beneficial effects:
1. the method comprises the steps of pre-installing an implant which can be detected by modern three-dimensional scanning at a tooth needing to be repaired in an oral cavity, then scanning and positioning the implant, restoring the shape of a prefabricated tooth, manufacturing the prefabricated tooth through numerical processing and a rapid forming technology, and finally installing the prefabricated tooth so as to realize rapid and immediate repair. The method has no damage to the gum of the patient, the prefabricated teeth are perfectly matched with the gum, the gum can be effectively protected, and the perfect matching during replacement of the false tooth is finally realized.
2. The implant is implanted into the gum, and then CBCT scanning is carried out on the implant and the periphery of the implant to obtain three-dimensional model data, so that the model taking treatment of the teeth by using gypsum or other pre-formed objects is not needed, the repeated operation of the oral cavity of a patient is reduced, and in the whole process, the implant is implanted into the oral cavity by medical personnel and then CBCT scanning is carried out for one time; thereby reducing the number of operating steps, reducing the workload and reducing the risk of infection for the patient.
3. According to the invention, by using the design of the implant software and the 3D printing technology or the CNC engraving technology, the prefabricated teeth are good in quality and standard in appearance, and meanwhile, the mounting holes are accurate in manufacturing, so that the accurate positioning of the implant in the implant operation can be effectively controlled, and therefore, the temporary immediate restoration manufactured before the implant operation can be immediately worn into the mouth of a patient after the implant operation, and the accurate and efficient implant operation and temporary restoration are realized.
Drawings
FIG. 1 is a flow chart of a method for immediate restoration of an intraoral tooth of the present invention;
FIG. 2 is a schematic view of an implant for immediate restoration of teeth in a mouth according to the present invention;
FIG. 3 is a schematic view of a prefabricated tooth for immediate restoration of an intraoral tooth in accordance with the present invention;
FIG. 4 is a schematic view of a dental restoration of a prefabricated tooth according to an instant dental restoration method of the present invention;
FIG. 5 is a schematic view of a prefabricated tooth assembly for an immediate intraoral dental restoration method of the present invention;
FIG. 6 is a schematic view of a prefabricated tooth restoration of an immediate intraoral tooth restoration method of the present invention;
the labels in the figure are: 1-implant, 11-installation of first part, 12-external boss, 13-connection surface, 14-installation of second part; 2-prefabricating teeth, 21-installing holes, 22-inner steps, 3-sealing objects and 4-temporary abutments; 5-prosthesis.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to specific embodiments below so that those skilled in the art can fully understand the technical contents of the present invention. It should be noted that the specific embodiments described herein are merely illustrative of the concepts of the invention and are not intended to limit the invention.
The same or similar reference numbers in the drawings for the embodiments of the present invention correspond to the same or similar locations. In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "inner", "outer", and the like, when used in the positional or orientational relationships indicated in the drawings, are used merely for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated. Therefore, the terms describing positional relationships in the drawings are only for illustrative purposes and are not to be construed as limiting the patent, and the specific meanings of the terms can be understood by those skilled in the art according to specific situations.
Referring to fig. 1-6, the present invention provides a method for immediate restoration of teeth in oral cavity, which comprises the following steps:
s1 gum implant: pretreating the teeth which are fallen off or need to be replaced in the oral cavity of a patient, drilling a cavity for installing the implant 1 on a teethridge, and implanting the implant 1 into the teethridge cavity; the implant 1 comprises a first mounting part 11, an outer boss 12 and a second mounting part 14, wherein the first mounting part 11 and the second mounting part 14 are distributed at two ends of the outer boss 12, a connecting surface 13 is arranged between the outer boss 12 and the second mounting part 14, and the first mounting part 11 is arranged in a cavity; the length of the first installation part 11 of the implant 1 is greater than that of the second installation part 14, and the length value of the first installation part 11 is 6-9 mm; the length value of the second mounting part 14 is 3-5 mm; the connecting surface 13 is a conical surface which is convenient to process and is perfectly matched with the temporary base station 4, and the appearance of the mounting second part 14 is rectangular, square or hexagonal, so that the mounting second part can be conveniently clamped by a pair of pliers during disassembly and assembly;
s2 installing a scanning rod on the implant: installing a scanning rod on the upper part of the implant 1, and confirming the installation tightness between the scanning rod and the implant 1 by using a Cone beam scanning imager (Cone beam CT, CBCT for short); when the scanning rod is used, the scanning rod is arranged on the mounting second part 14; after the scanning rod is used, the scanning rod is detached from the second mounting part 14;
the S3 scanner scans teeth and scanning bar: scanning the space shape of the tooth and the scanning rod at the upper part of the implant 1 by using an intraoral scanner to obtain the shape structure of the tooth defect and the position of the scanning rod, and forming digital model data in STL or DICOM format;
s4 tooth software design processing: importing the model data in STL or DICOM format obtained in step S3 into 3SHAPE software, and processing the position of the gum and the implant 1 with three-dimensional structure and the concave SHAPE of the teeth in the 3SHAPE software according to the model data; thereby obtaining the tooth concave shape of the prefabricated tooth 2 and the position composite model data of the implant 1 on the gum;
s5 prefabricated tooth preparation: according to the position composite model data of the step S4, printing and shaping the prefabricated tooth 2 and the mounting hole 21 of the prefabricated tooth 2 by using a 3D printing technology, or engraving the prefabricated tooth 2 and the mounting hole 21 of the prefabricated tooth 2 by using CNC; the 3D printing or CNC engraving material of the step S5 is medical epoxy resin, the printing speed is 0.2-1 m/S, the printing power is 200-300W, and the printing resolution is 30-60 mu m;
s6 prefabricated dental preparation: performing fine polishing and surface shape modification on the prefabricated tooth 2 obtained in the step S5; the polishing agent for fine polishing is sodium bicarbonate fine particles or toothpaste or tooth powder, the rotating speed of a polisher for fine polishing is 15-35 rpm, and a polishing wheel of the polisher is a rubber wheel or a silk wheel;
s7 prefabricated tooth bonding: installing a prefabricated temporary abutment 4 prepared in advance in an installation hole 21 of the prefabricated tooth 2 to obtain the prefabricated tooth 2 with the temporary abutment 4, adhering the installation hole 21 and the temporary abutment 4 by using an adhesive to obtain a restoration 5 with the temporary abutment 4 and the prefabricated tooth 2 integrated, and filling a closure 3 in the rest part of the installation hole 21; the edge of the temporary abutment 4 has the same shape as the jaw arch and is attached to the surface of the gum; the temporary abutment covers the periphery of the gingiva; the covering thickness of the temporary base station is 0.5-2.5 mm; the sealer 3 is a resin gutta-percha point, the gutta-percha point consists of 92-97% of gutta-percha, 2-4% of zinc oxide and 1-3% of barium sulfate in percentage by mass; the gutta-percha tip has good plasticity, can be softened by heating, can be hardened by cooling, is tightly filled, and has good tissue affinity.
S8 prefabricated tooth installation: installing the prosthesis 5 in the step S7 on the implant 1 in a mode of bonding by using an adhesive or in a threaded connection mode; the adhesive is epoxy resin, phenolic resin, or polyurethane thermosetting adhesive, such as 3M ESPE RelyX U200.
S9 prefabricated teeth correction: after the prosthesis 5 is implanted into the oral cavity of a patient, the degree of fit between the prosthesis 5 and the periphery of the implant 1 and other teeth is checked, and slight fine polishing correction is carried out to complete immediate restoration.
The implant 1 and the provisional abutment 4 are standard components manufactured in advance, and are made of medical stainless steel, titanium alloy, nylon, or urethane resin. The material has high mechanical strength while having good corrosion resistance, can be used for a long time after being arranged in a dental bed, and avoids the need of replacing the implant again in the subsequent replacement of false teeth market, thereby reducing the frequency and cost of patient treatment.
Example 1:
the invention provides an immediate restoration method of teeth in oral cavity, S1 dental bed implant: pretreating the teeth which are fallen off or need to be replaced in the oral cavity of a patient, drilling a cavity for installing the implant 1 on a teethridge, and implanting the implant 1 into the teethridge cavity; the implant 1 comprises a first mounting part 11, an outer boss 12 and a second mounting part 14, wherein the first mounting part 11 and the second mounting part 14 are distributed at two ends of the outer boss 12, a connecting surface 13 is arranged between the outer boss 12 and the second mounting part 14, and the first mounting part 11 is arranged in a cavity; the length of the first mounting part 11 of the implant 1 is greater than that of the second mounting part 14, and the length of the first mounting part 11 is 6 mm; the length value of the second mounting part 14 is 3.5 mm; the connecting surface 13 is a conical surface which is convenient to process and perfectly matched with the temporary base station 4, and the mounting second part 14 is arranged in a square structure, so that the connecting surface can be conveniently clamped by a clamp during disassembly and assembly;
s2 installing a scanning rod on the implant: installing a scanning rod on the upper part of the implant 1, and confirming the installation tightness between the scanning rod and the implant 1 by using a Cone beam scanning imager (Cone beam CT, CBCT for short); when the scanning rod is used, the scanning rod is arranged on the mounting second part 14; after the scanning rod is used, the scanning rod is detached from the second mounting part 14; the implant 1 and the provisional abutment 4 are standard components manufactured in advance, and are made of polyurethane resin.
The S3 scanner scans teeth and scanning bar: scanning the space shape of the tooth and the scanning rod at the upper part of the implant 1 by using an intraoral scanner to obtain the shape structure of the tooth defect and the position of the scanning rod, and forming digital model data in STL or DICOM format;
s4 tooth software design processing: importing the model data in STL or DICOM format obtained in step S3 into 3SHAPE software, and processing the position of the gum and the implant 1 with three-dimensional structure and the concave SHAPE of the teeth in the 3SHAPE software according to the model data; thereby obtaining the tooth concave shape of the prefabricated tooth 2 and the position composite model data of the implant 1 on the gum;
s5 prefabricated tooth preparation: according to the position composite model data of the step S4, printing and shaping the prefabricated tooth 2 and the mounting hole 21 of the prefabricated tooth 2 by using a 3D printing technology, or engraving the prefabricated tooth 2 and the mounting hole 21 of the prefabricated tooth 2 by using CNC; the 3D printing or CNC engraving material of the step S5 is medical epoxy resin, the printing speed is 0.3m/S, the printing power is 250W, and the printing resolution is 35 mu m;
s6 prefabricated dental preparation: performing fine polishing and surface shape modification on the prefabricated tooth 2 obtained in the step S5; the polishing agent for fine polishing is sodium bicarbonate fine particles, the rotating speed of a polisher for fine polishing is 20rpm, and a polishing wheel of the polisher is a rubber wheel;
s7 prefabricated tooth bonding: installing a prefabricated temporary abutment 4 prepared in advance in an installation hole 21 of the prefabricated tooth 2 to obtain the prefabricated tooth 2 with the temporary abutment 4, adhering the installation hole 21 and the temporary abutment 4 by using an adhesive to obtain a restoration 5 with the temporary abutment 4 and the prefabricated tooth 2 integrated, and filling a closure 3 in the rest part of the installation hole 21; the edge of the temporary abutment 4 has the same shape as the jaw arch and is attached to the surface of the gum; the temporary abutment covers the periphery of the gingiva; the coverage thickness of the temporary base station is 1 mm; the sealer 3 is a resin gutta-percha point, the gutta-percha point consists of gutta-percha, zinc oxide and barium sulfate, and the mass percent of the gutta-percha point is 95 percent, the zinc oxide is 3 percent and the barium sulfate is 2 percent; the gutta-percha tip has good plasticity, can be softened by heating, can be hardened by cooling, is tightly filled, and has good tissue affinity.
S8 prefabricated tooth installation: installing the prosthesis 5 in the step S7 on the implant 1 in a mode of bonding by using an adhesive or in a threaded connection mode; the adhesive is epoxy resin 3M ESPE RelyX U200.
S9 prefabricated teeth correction: after the prosthesis 5 is implanted into the oral cavity of a patient, the degree of fit between the prosthesis 5 and the periphery of the implant 1 and other teeth is checked, and slight fine polishing correction is carried out to complete immediate restoration.
This prefabricated tooth 2 is intact with the natural tooth cooperation of both sides, and the patient does not have food card when chewing food and causes uncomfortable sense between the tooth, uses two weeks and does not have the discomfort, and untoward reaction does not appear in the direct change for the artificial tooth.
Example 2:
the invention provides an immediate restoration method of teeth in oral cavity, S1 dental bed implant: pretreating the teeth which are fallen off or need to be replaced in the oral cavity of a patient, drilling a cavity for installing the implant 1 on a teethridge, and implanting the implant 1 into the teethridge cavity; the implant 1 comprises a first mounting part 11, an outer boss 12 and a second mounting part 14, wherein the first mounting part 11 and the second mounting part 14 are distributed at two ends of the outer boss 12, a connecting surface 13 is arranged between the outer boss 12 and the second mounting part 14, and the first mounting part 11 is arranged in a cavity; the length of the first mounting part 11 of the implant 1 is greater than that of the second mounting part 14, and the length of the first mounting part 11 is 7 mm; the length value of the second mounting part 14 is 4.5 mm; the connecting surface 13 is a conical surface which is convenient to process and perfectly matched with the temporary base station 4, and the mounting second part 14 is arranged in a square structure, so that the connecting surface can be conveniently clamped by a clamp during disassembly and assembly;
s2 installing a scanning rod on the implant: installing a scanning rod on the upper part of the implant 1, and confirming the installation tightness between the scanning rod and the implant 1 by using a Cone beam scanning imager (Cone beam CT, CBCT for short); when the scanning rod is used, the scanning rod is arranged on the mounting second part 14; after the scanning rod is used, the scanning rod is detached from the second mounting part 14; the implant 1 and the provisional abutment 4 are standard components manufactured in advance, and are made of polyurethane resin.
The S3 scanner scans teeth and scanning bar: scanning the space shape of the tooth and the scanning rod at the upper part of the implant 1 by using an intraoral scanner to obtain the shape structure of the tooth defect and the position of the scanning rod, and forming digital model data in STL or DICOM format;
s4 tooth software design processing: importing the model data in STL or DICOM format obtained in step S3 into 3SHAPE software, and processing the position of the gum and the implant 1 with three-dimensional structure and the concave SHAPE of the teeth in the 3SHAPE software according to the model data; thereby obtaining the tooth concave shape of the prefabricated tooth 2 and the position composite model data of the implant 1 on the gum;
s5 prefabricated tooth preparation: according to the position composite model data of the step S4, printing and shaping the prefabricated tooth 2 and the mounting hole 21 of the prefabricated tooth 2 by using a 3D printing technology, or engraving the prefabricated tooth 2 and the mounting hole 21 of the prefabricated tooth 2 by using CNC; the 3D printing or CNC engraving material of the step S5 is medical epoxy resin, the printing speed is 0.85m/S, the printing power is 220W, and the printing resolution is 55 mu m;
s6 prefabricated dental preparation: performing fine polishing and surface shape modification on the prefabricated tooth 2 obtained in the step S5; the polishing agent for fine polishing is sodium bicarbonate fine particles, the rotating speed of a polisher for fine polishing is 30rpm, and a polishing wheel of the polisher is a silk wheel;
s7 prefabricated tooth bonding: installing a prefabricated temporary abutment 4 prepared in advance in an installation hole 21 of the prefabricated tooth 2 to obtain the prefabricated tooth 2 with the temporary abutment 4, adhering the installation hole 21 and the temporary abutment 4 by using an adhesive to obtain a restoration 5 with the temporary abutment 4 and the prefabricated tooth 2 integrated, and filling a closure 3 in the rest part of the installation hole 21; the edge of the temporary abutment 4 has the same shape as the jaw arch and is attached to the surface of the gum; the temporary abutment covers the periphery of the gingiva; the coverage thickness of the temporary base station is 2 mm; the sealer 3 is a resin gutta-percha point, the gutta-percha point consists of gutta-percha, zinc oxide and barium sulfate, and the mass percent of the gutta-percha point is 96 percent, the mass percent of the zinc oxide is 2.5 percent and the mass percent of the barium sulfate is 1.5 percent; the gutta-percha tip has good plasticity, can be softened by heating, can be hardened by cooling, is tightly filled, and has good tissue affinity.
S8 prefabricated tooth installation: installing the prosthesis 5 in the step S7 on the implant 1 in a mode of bonding by using an adhesive or in a threaded connection mode; the adhesive is epoxy resin 3M ESPE RelyX U200.
S9 prefabricated teeth correction: after the prosthesis 5 is implanted into the oral cavity of a patient, the degree of fit between the prosthesis 5 and the periphery of the implant 1 and other teeth is checked, and slight fine polishing correction is carried out to complete immediate restoration.
According to the method, the CNC engraved prefabricated teeth 2 are matched with natural teeth on two sides perfectly, a patient does not feel uncomfortable due to food clamped between the teeth when chewing food, the replacement is completed in one cycle through CNC engraving, the replacement is not improper in one cycle, and no adverse reaction occurs until the replacement is performed on the artificial teeth.
Example 3:
the invention provides an oral cavity tooth immediate restoration method, which is different from the embodiment 1 in that the 3D printing material for manufacturing the prefabricated tooth in the step S5 is medical epoxy resin, the printing speed is 0.55m/S, the printing power is 280W, and the printing resolution is 45 mu m;
this prefabricated tooth 2 is intact with the natural tooth cooperation of both sides, and the patient does not have food card when chewing food and causes uncomfortable sense between the tooth, uses two weeks and does not have the discomfort, and untoward reaction does not appear in the direct change for the artificial tooth.
The method comprises the steps of pre-installing an implant which can be detected by modern three-dimensional scanning at a tooth needing to be repaired in an oral cavity, then scanning and positioning the implant, restoring the shape of a prefabricated tooth, manufacturing the prefabricated tooth through numerical processing and a rapid forming technology, and finally installing the prefabricated tooth so as to realize rapid and immediate repair. The method has no damage to the gum of the patient, the prefabricated teeth are perfectly matched with the gum, the gum can be effectively protected, and the perfect matching during replacement of the false tooth is finally realized.
It should be noted that the above-mentioned preferred embodiments are merely illustrative of the technical concepts and features of the present invention, and are intended to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (6)
1. An immediate restoration method of teeth in oral cavity, which is characterized by comprising the following steps:
s1 gum implant: pretreating the teeth which are fallen off or need to be replaced in the oral cavity of a patient, drilling a cavity for installing the implant (1) on a teethridge, and implanting the implant (1) into the teethridge cavity;
s2 installing a scanning rod on the implant: installing a scanning rod on the upper part of the implant (1), and confirming the installation tightness between the scanning rod and the implant (1) by CBCT;
the S3 scanner scans teeth and scanning bar: scanning the space shape of the tooth and a scanning rod at the upper part of the implant (1) by using an intraoral scanner to obtain the shape structure of the tooth defect and the position of the scanning rod, and forming digital model data in STL or DICOM format;
s4 tooth software design processing: importing the model data in STL or DICOM format obtained in step S3 into 3SHAPE software, and processing the positions of the gum and the implant (1) with three-dimensional structure and the concave SHAPE of the teeth in the 3SHAPE software according to the model data; thereby obtaining the tooth concave shape of the prefabricated tooth (2) and the position composite model data of the implant (1) on the gum;
s5 prefabricated tooth preparation: printing and shaping the prefabricated tooth (2) and the mounting hole (21) of the prefabricated tooth (2) by applying a 3D printing technology or engraving the prefabricated tooth (2) by using CNC according to the position composite model data of the step S4;
s6 prefabricated dental preparation: performing fine polishing and surface shape modification on the prefabricated tooth (2) obtained in the step S5;
s7 prefabricated tooth bonding: mounting a prefabricated temporary abutment (4) in a mounting hole (21) of the prefabricated tooth (2) to obtain a restoration body (5) with the temporary abutment (4) and the prefabricated tooth (2) as a whole; the rest of the mounting hole (21) is filled with a closure (3);
s8 prefabricated tooth installation: mounting the prosthesis (5) of step S7 on the implant (1);
s9 prefabricated teeth correction: after the prosthesis (5) is implanted into the oral cavity of a patient, the fitting degree of the prosthesis (5) and the periphery of the implant (1) and other teeth is checked, and slight fine polishing correction is carried out.
2. The method for immediate restoration of an intraoral tooth according to claim 1, wherein:
the 3D printing material in the step S5 is medical epoxy resin, the printing speed is 0.2-1 m/S, the printing power is 200-300W, and the printing resolution is 30-60 mu m.
3. The method for immediate restoration of an intraoral tooth according to claim 1, wherein:
step S6, the polishing agent for fine polishing is sodium bicarbonate fine particles or toothpaste or tooth powder, the rotation speed of the polisher for fine polishing is 15-35 rpm, and the polishing wheel of the polisher is a rubber wheel or a silk wheel.
4. The method for immediate restoration of an intraoral tooth according to claim 1, wherein:
step S7, the sealer (3) is gutta-percha point, which is composed of 92% -97% of gutta-percha, 2% -4% of zinc oxide and 1% -3% of barium sulfate.
5. The method for immediate restoration of an intraoral tooth according to claim 1, wherein:
the length of the first installation part (11) of the implant (1) is greater than that of the second installation part (14), and the length value of the first installation part (11) is 6-9 mm; the length value of the second mounting part (14) is 3-5 mm.
6. The method for immediate restoration of an intraoral tooth according to claim 1, wherein:
the edge of the temporary abutment (4) has the same shape as the jaw arch and is attached to the surface of the gum; the temporary abutment covers the gingiva; the temporary base station is 0.5-2.5 mm in coverage thickness.
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Application publication date: 20210101 |