CN113855292A - Preparation method and structure of zirconium-titanium composite dental bridge for edentulous jaw - Google Patents
Preparation method and structure of zirconium-titanium composite dental bridge for edentulous jaw Download PDFInfo
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61C13/00—Dental prostheses; Making same
- A61C13/0003—Making bridge-work, inlays, implants or the like
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- A—HUMAN NECESSITIES
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- 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
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C13/00—Dental prostheses; Making same
- A61C13/08—Artificial teeth; Making same
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C13/00—Dental prostheses; Making same
- A61C13/08—Artificial teeth; Making same
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Abstract
The invention relates to the technical field of dental implant restoration bridges, and provides a preparation method of a zirconium-titanium composite dental bridge for an edentulous jaw, which comprises the following steps of S1, obtaining a tooth three-dimensional file A1 and S2, processing the tooth three-dimensional file A1 to obtain a trial integral bridge B1, adjusting the trial integral bridge B1, S3, three-dimensionally scanning the trial integral bridge B1 to obtain a dental bridge three-dimensional file A2 and S4, cutting the dental bridge three-dimensional file A2 to obtain a titanium bridge three-dimensional file A20, cutting according to the titanium bridge three-dimensional file A20 to obtain a titanium metal B20, cutting according to the titanium metal bridge three-dimensional file A20 to obtain a zirconium oxide three-dimensional file A21, cutting according to the zirconium oxide three-dimensional file A21 to obtain a zirconium oxide bridge B21, S5, and connecting the titanium metal B20 with the zirconium oxide B21 to obtain the dental bridge B3. Through above-mentioned technical scheme, the problem of the bridge quality is poor among the prior art has been solved.
Description
Technical Field
The invention relates to the technical field of dental implant restoration bridges, in particular to a preparation method and a structure of a zirconium-titanium composite dental bridge for edentulous jaws.
Background
After the tooth is lost, the implant is implanted into the residual alveolar bone or jaw bone in the tooth-deficient area, and the artificial upper prosthesis-the crown is installed on the implant, so that the lost tooth can be repaired, and the chewing, pronunciation and aesthetic functions can be recovered, which is the best solution accepted at home and abroad at present.
After the whole mouth of a tooth is lost, 4-6 dental implants are implanted into the residual alveolar bone or the jaw bone of the upper jaw or the lower jaw, and then an integrated dental bridge is manufactured at the upper part, wherein the integrated dental bridge at the upper part generally has four common manufacturing technologies for repairing:
the first method is to weld a titanium metal connecting rod or numerically control cut a titanium metal integrated bridge frame, use a finished product of composite resin to artificially arrange teeth, copy a silica gel model, and complete the process through injection molding, polymerization, grinding and polishing.
The second one is a personalized titanium metal integrated bridge frame cut and processed by a CAD/CAM numerically controlled lathe, and the surface of the bridge frame is covered with microfiller photocuring gum color and tooth color polymer resin.
And thirdly, cutting a personalized titanium metal integrated bridge frame on a CAD/CAM numerically controlled lathe, covering gum color light curing polymer resin on the gum end surface of the bridge frame, and finishing the bonding by using a zirconia crown as the crown end.
The fourth is CAD/CAM bulk cutting pure zirconia dental bridge.
The method comprises the steps of welding titanium metal connecting rod resin, finishing artificial tooth arrangement, numerically-controlled cutting of a mode of finishing the process of covering the surface of a titanium metal integrated bridge with microfiller photocuring gum color and tooth color polymerization resin, mechanically retaining or wrapping retaining the interface of the artificial tooth and composite resin and a titanium metal bracket, easily breaking and integrally stripping the artificial tooth material and the resin material, and the like, wherein the abrasion resistance of the resin material is poor, so that the loss of the occlusion position relation and the occlusion height of upper and lower jaw teeth is quickly caused, the service life is short, and the repair or the replacement is usually required for 3 to 5 years; the resin material is easy to age and color, has poor aesthetic property, has poor biocompatibility, is easy to be attached with bacterial plaque microorganisms, soft dirt and the like on the surface, and is not beneficial to oral hygiene maintenance and the health of periodontal tissues such as gingiva and the like.
The personalized titanium metal integrated bridge frame cut by the CAD/CAM numerical control lathe adopts a gum color resin repairing mode, and gum color resin has the defects of poor abrasion resistance, easy aging and coloring, poor biocompatibility, easy adhesion of bacterial plaque microorganisms, soft scale and the like on the surface, and is not beneficial to oral hygiene maintenance and the health of periodontal tissues such as gingiva and the like.
The integrally-cut pure zirconia dental bridge is high in manufacturing cost and difficult to process, the dental bridge is easy to break and the like in the manufacturing process or the use process of wearing the dental bridge in the oral cavity of a patient, and the full zirconia dental bridge is heavy in weight.
The bridge frame used by the four repairing technologies has the problems of poor biocompatibility, easy bacterial breeding, easy aging, easy fracture and the like, and the bridge frame needs to be improved.
Disclosure of Invention
The invention provides a preparation method and a structure of a zirconium-titanium composite dental bridge for an edentulous jaw, which solve the problem of poor quality of the dental bridge in the related technology.
The technical scheme of the invention is as follows:
a preparation method of a zirconium-titanium composite dental bridge for a toothless jaw is provided, the zirconium-titanium composite dental bridge is formed by connecting a titanium metal bridge frame and a zirconium oxide bridge frame, and the preparation method comprises the following steps:
s1, obtaining a tooth three-dimensional file,
s2, processing the tooth three-dimensional file to obtain a trial integral bridge, adjusting the trial integral bridge,
s3, three-dimensional scanning is carried out on the trial integral bridge to obtain a dental bridge three-dimensional file,
s4, cutting the three-dimensional file of the bridge to obtain a three-dimensional file of the titanium metal bridge, cutting according to the three-dimensional file of the titanium metal bridge to obtain the titanium metal bridge,
obtaining a zirconia bridge three-dimensional file from the titanium metal bridge three-dimensional file, cutting and processing according to the zirconia bridge three-dimensional file to obtain a zirconia bridge,
and S5, connecting the titanium metal bridge frame and the zirconia bridge frame to obtain the dental bridge.
As a further technical scheme, in the step S2, a trial integral bridge is obtained from the tooth three-dimensional file and is realized by 3D printing, and the trial integral bridge is a resin integral bridge,
in the step S3, when the trial whole bridge is three-dimensionally scanned to obtain the dental bridge three-dimensional file, the adjustment and the three-dimensional scanning are performed several times to obtain the optimal dental bridge three-dimensional file,
in step S5, the connection is specifically fitting and/or bonding.
As a further technical solution, in the step S4, cutting is performed, specifically, by a digital cutting device,
the zirconia bridge three-dimensional file is obtained from a titanium metal bridge three-dimensional file, specifically,
three-dimensionally scanning the titanium bridge to obtain a secondary three-dimensional file of the titanium bridge, automatically performing superposition calculation on the tooth bridge three-dimensional file and the secondary three-dimensional file of the titanium bridge to obtain a zirconium oxide bridge three-dimensional file,
the method comprises the steps of carrying out high-temperature crystallization on a zirconia bridge, dyeing, firing a crown finish porcelain, sintering a gum finish porcelain, adding a gum color porcelain material on the surface of a substrate of the zirconia bridge, carrying out high-temperature sintering, fine modification and glazing to form a gum color part, adding a gum color porcelain material on the surface of the zirconia bridge, carrying out high-temperature sintering, fine modification and glazing to form a crown.
As a further technical solution, the step S5 specifically includes: anodizing the surface of the titanium metal, namely placing the titanium metal bridge in a sodium bicarbonate solution micro-current device, forming a golden anodic oxidation coating on the surface of the titanium metal bridge, changing the gray black of the titanium metal into golden yellow, and fixing the titanium metal bridge and the zirconium oxide bridge by a mechanical micro-embedding structure and a high-molecular dual-curing adhesive material.
The invention also provides a zirconium-titanium composite dental bridge for the edentulous jaw, which is used for connecting an oral implant platform, the oral implant platform is provided with a threaded hole and comprises,
the titanium metal bridge frame is provided with a titanium metal bridge frame,
a titanium connecting part which is jointed and connected with the oral implant platform,
an arcuate body portion provided on the titanium connecting portion and having a through hole,
a connecting screw passing through the through hole and in threaded connection with the threaded hole,
a zirconia bridge frame comprising
A zirconium connecting portion having a bonding groove, the arcuate body portion being bonded in the bonding groove.
As a further technical scheme, the titanium connecting portion have a butt joint face, the butt joint face has a gum tissue connection face that is used for with the laminating of oral cavity gum tissue, gum tissue connection face is smooth round process structure.
As a further technical scheme, the arc-shaped body part is provided with an arc-shaped bulge, and the surface of the arc-shaped bulge is a rough surface and is matched with and connected with the bonding groove in a bonding mode.
As a further technical scheme, the connection part of the titanium connecting part and the arched body part is a thin-edge inward-contraction step, and the thin-edge inward-contraction step is in fit butt joint with the zirconium connecting part.
As a further technical proposal, the zirconia bridge frame also comprises,
a gingival colored portion disposed on the zirconium connecting portion for serving as a missing gingival tissue,
a crown portion disposed on the gingival coloring portion for serving as a missing tooth portion.
As a further technical solution, the arcuate body is one-piece or segmented.
The working principle and the beneficial effects of the invention are as follows:
in order to solve the problem that a pure zirconia dental bridge is easy to break in the cutting process, the inventor adopts the design of a zirconium-titanium composite dental bridge and connects the zirconium-titanium composite dental bridge to an oral implant platform for use, the zirconium-titanium composite dental bridge consists of two parts, one part is a titanium metal bridge, the other part is a zirconia bridge, and the combination of the titanium metal bridge and the zirconia bridge avoids the problem that the pure zirconia dental bridge is heavy overall, wherein the titanium metal bridge consists of a titanium connecting part, an arched body part and a connecting screw, the titanium connecting part is connected to the oral implant platform, the connecting structure with the oral implant platform is a butt-joint platform structure which is cut according to the data of the implant restoration platform, the titanium connecting part is a part for connecting and supporting a gum tissue and an implant, the arched body part is fixed on the titanium connecting part, in addition, the inventor also designs a connecting screw, the connecting screw is arranged in a threaded hole of the oral implant platform through a perforation thread, and the arched body part and the titanium connecting part are fixed on the oral implant. The zirconia crane span structure includes the zirconium connecting portion, set up the recess on the zirconium connecting portion and be used for the adhesion on the bow-shaped somatic part of titanium metal crane span structure, this recess is the bonding recess promptly, the zirconia crane span structure is fixed on the titanium metal crane span structure through the adhesion with bow-shaped somatic part, this kind of design and mechanical gomphosis combined action, can obtain the retention effect of long-term stability, avoid the coming off of zirconia veneer in the long-term use, among the prior art, pure zirconia dental bridge is in the manufacture process or wears into the use in patient's oral cavity, the fracture of dental crane span structure all takes place easily, and pure zirconia crane span structure, the cost of manufacture is high, difficult processing, this kind of design is fine has overcome above shortcoming.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic perspective view of a titanium metal bridge of the present invention;
FIG. 2 is a schematic perspective view of a zirconia bridge of the present invention;
FIG. 3 is a schematic structural view of an implant platform according to the present invention;
FIG. 4 is a schematic perspective view of a zirconium-titanium composite dental bridge for edentulous jaws according to the present invention;
FIG. 5 is a schematic perspective view of a titanium metal bridge and a zirconia bridge assembly according to the present invention;
FIG. 6 is a schematic side sectional view of a titanium metal bridge according to the present invention;
FIG. 7 is a schematic flow chart of a method for preparing the zirconium-titanium composite dental bridge for the edentulous jaw.
In the figure: a1-tooth three-dimensional file, B1-trial integral bridge, A2-tooth bridge three-dimensional file, A20-titanium metal bridge three-dimensional file, B20-titanium metal bridge, A21-zirconium oxide bridge three-dimensional file, B21-zirconium oxide bridge, B3-tooth bridge, A200-titanium metal bridge secondary three-dimensional file, 1-oral implant platform, 101-threaded hole, 2-titanium metal bridge, 201-titanium connecting part, 202-arched body part, 203-through hole, 204-connecting screw, 205-butt joint surface, 206-gingival tissue connecting surface, 207-arc protrusion, 208-thin edge inside step, 3-zirconium oxide bridge, 301-zirconium connecting part, 302-bonding groove, 303-gingival part and 304-tooth crown.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any inventive step, are intended to be within the scope of the present invention.
Example 1
As shown in FIG. 7, this example proposes a method for preparing a zirconium-titanium composite dental bridge for edentulous jaw, comprising the following steps,
s1, obtaining a tooth three-dimensional file A1,
s2, processing the tooth three-dimensional file A1 to obtain a trial integral bridge B1, adjusting the trial integral bridge B1,
s3, three-dimensional scanning is carried out on the trial whole bridge B1 to obtain a dental bridge three-dimensional file A2,
s4, cutting the dental bridge three-dimensional file A2 to obtain a titanium metal bridge three-dimensional file A20, cutting according to the titanium metal bridge three-dimensional file A20 to obtain a titanium metal bridge B20,
obtaining a zirconia bridge three-dimensional file A21 from a titanium metal bridge three-dimensional file A20, obtaining a zirconia bridge B21 by cutting according to the zirconia bridge three-dimensional file A21,
s5, connecting the titanium metal bridge B20 with the zirconia bridge B21 to obtain the dental bridge B3.
Further, in step S2, a trial one-piece bridge B1 is obtained from the dental three-dimensional file A1, which is realized by 3D printing, and the trial one-piece bridge B1 is a resin one-piece bridge,
in step S3, when the trial whole bridge B1 is three-dimensionally scanned to obtain the dental bridge three-dimensional file a2, the adjustment and three-dimensional scanning are performed several times to obtain the optimal dental bridge three-dimensional file a2,
in step S5, the connection is specifically fitting and/or bonding.
Further, in step S4, performing cutting, specifically, by using a digital cutting device; obtaining a zirconia bridge three-dimensional file A21 by a titanium bridge three-dimensional file A20, specifically, obtaining a titanium bridge secondary three-dimensional file A200 by three-dimensionally scanning a titanium bridge B20, obtaining a zirconia bridge three-dimensional file A21 by automatic superposition calculation of the dental bridge three-dimensional file A2 and the titanium bridge secondary three-dimensional file A200,
the method comprises the steps of carrying out high-temperature crystallization on a zirconia bridge B21, dyeing, firing a crown finish porcelain, sintering the gum finish porcelain, carrying out artificial fine addition of a gum color porcelain material on the surface of a substrate of the zirconia bridge B21, carrying out high-temperature sintering, carrying out fine modification and glazing to form a gum color part, then carrying out artificial fine addition of a gum color porcelain material on the surface of the zirconia bridge B21, carrying out high-temperature sintering, carrying out fine modification and glazing to form a crown.
Further, step S5 is specifically, performing anodic oxidation treatment on the surface of the titanium metal, placing the titanium bridge in a sodium bicarbonate solution micro-current device, forming a gold anodic oxidation coating on the surface of the titanium metal bridge in 50 minutes, changing the gray black of the titanium metal into a gold color, and fixing the titanium metal bridge and the zirconia bridge aesthetic frame by a mechanical micro-embedding structure and a polymer dual-curing adhesive material.
In this embodiment, the tooth three-dimensional file a1 in the step S1 is an STL format file of a future virtual dental bridge obtained by digitally scanning 3D data model data, analyzing and judging a case by CAD design software, and then refining the tooth, dental arch form, aesthetic effect, and occlusal contact relationship on a virtual interface according to the occlusal alignment relationship and dental arch positional relationship of the upper and lower teeth, which is accurate and efficient, and after confirming that the obtained tooth three-dimensional file a1 is correct, a high-strength full-resin integral bridge is printed by a digital 3D printer, and this high-strength full-resin integral bridge is the trial integral bridge B1.
The adjustment in the step S2 is specifically to try on the whole bridge B1 in a clinical oral cavity, confirm the correct bridge, and then perform a secondary scan to try on the confirmed whole bridge.
And (4) importing the whole resin whole bridge after secondary scanning try-on confirmation into repair design software to generate a final virtual dental bridge, wherein the final virtual dental bridge is the dental bridge three-dimensional file A2 in the step S3.
The specific operation of obtaining the titanium metal bridge three-dimensional file A20 through back-cut calculation in the step S4 is that the tooth bridge three-dimensional file A2 is back-cut through software calculation, a virtual titanium metal bridge which meets the characteristics of an individualized dental arch is preferably designed, the virtual titanium metal bridge is the tooth bridge three-dimensional file A2, data of the tooth bridge three-dimensional file A2 are imported into digital cutting equipment, and then the solid titanium metal bridge B20 can be generated through cutting, and after manual trimming and grinding and clinical confirmation, the titanium metal bridge B20 is manufactured. The specific operation of obtaining the zirconia bridge three-dimensional file A21 is that the finished titanium bridge B20 is scanned again and computer repair design software is introduced; at the moment, after the virtual data of the secondary scanning full-resin bridge and the virtual data of the secondary scanning titanium metal bridge, namely a titanium metal bridge secondary three-dimensional file A200 and a tooth bridge three-dimensional file A2, are automatically superposed and calculated through software, the virtual data of the zirconia cutting bridge can be generated, wherein the automatic superposition is that the virtual data of the zirconia cutting bridge can be obtained by carrying out reverse guidance on the titanium metal bridge secondary three-dimensional file A200 according to the matching relation between the graph of the titanium metal bridge secondary three-dimensional file A200 and the graph of the zirconia bridge three-dimensional file A21, the virtual data of the zirconia cutting bridge is a zirconia bridge three-dimensional file A21, the zirconia bridge three-dimensional file A21 is typeset and input into a cutting machine, so that an individualized segmented or integrated zirconia decorative bridge part can be generated, the crown part is crystallized at high temperature and dyed and burnt with tooth decorative porcelain, and the gum part decorative porcelain is sintered with zirconia aesthetic bridge, namely zirconia bridge B21.
In step S5, the concrete operation of obtaining the dental bridge B3 is that the titanium metal bridge B20 and the zirconia bridge B21 are fixed by a mechanical micro-embedding structure and a high molecular dual-curing adhesive material.
In this embodiment, in order to obtain titanium metal crane span structure B20 and zirconia crane span structure B21, whole bridge B1's on probation processing has been carried out earlier, because whole bridge B1 on probation can adopt ordinary materials such as resin, it is more convenient to process, the cost is cheaper, thereby it makes the tooth bridge that more accords with the demand more conveniently to adjust simply, thereby fine having avoided direct processing out titanium metal crane span structure B20 and zirconia crane span structure B21, and not laminating and accord with the requirement, lead to extravagant, greatly increased cost's emergence, the fine improvement of design of whole bridge B11 on probation, machining efficiency and product quality.
In the embodiment, the titanium metal bridge frame B20 and the zirconia bridge frame B21 are combined, and the design overcomes the problems that a pure zirconia integrated dental bridge is easy to break in the cutting process, large in deformation rate in the sintering process and other processing difficulties, and is easy to break in a long term and heavy in mass in an inlet cavity; on the other hand, the defects of early design that in the composite repair technology of adding resin materials into the metal bridge frame, the composite resin pre-prepared artificial teeth and the fine adjusting materials meet the requirements of resin color, single shape or poor color sense and cannot meet individual requirements, the uncontrollable property of manual manufacturing in most links, the final result often has larger deviation, the expected result cannot be seen in advance and the like are thoroughly solved; and the preformed artificial teeth and the microfiller photocuring gum color and tooth color polymeric resin materials and the like have poor abrasion resistance, aging and coloring, plaque burden, difficult cleaning, difficult oral soft tissue health and other clinical problems.
Example 2
As shown in fig. 1 to 6, the present embodiment further provides a zirconium-titanium composite dental bridge for edentulous jaw, which is used to connect to an oral implant platform 1, the oral implant platform 1 has a threaded hole 101, including,
the titanium metal bridge frame 2 comprises a titanium metal bridge frame,
a titanium connecting part 201 connected with the oral implant platform 1,
an arcuate body 202, provided on the titanium connection part 3, having a through hole 203,
a connecting screw 204 passing through the through hole 203 and screwed with the screw hole 101,
the zirconia bridge 3, comprising,
the zirconium connecting portion 301 has a bonding groove 302, and the arcuate body portion 202 is bonded in the bonding groove 301.
In the embodiment, in order to solve the problem that a pure zirconia dental bridge is easy to break in the cutting process, the inventor adopts the design of a zirconia-titanium composite dental bridge, and connects the zirconia-titanium composite dental bridge to an oral implant platform 1 for use, the zirconia-titanium composite dental bridge is composed of two parts, one part is a titanium metal bridge 2, the other part is a zirconia bridge 6, and the combination of the titanium metal bridge 2 and the zirconia bridge 6 avoids the problem that the pure zirconia dental bridge is overall heavier, wherein the titanium metal bridge 2 is composed of a titanium connecting part 3, an arched body part 4 and a connecting screw 204, the titanium connecting part 3 is connected to the oral implant platform 1, the connecting structure with the oral implant platform 1 is a butt-joint platform structure cut according to the data of the implant repair platform, the titanium connecting part 3 is a part for connecting and supporting the dental bridge with gum tissue and the implant, the arched body part 4 is fixed on the titanium connecting part 3, in addition, the inventor also designs a connecting screw 5, the connecting screw 5 is installed in the threaded hole 101 of the oral implant platform 1 through the through hole 401 in a threaded manner, and the arched body 4 and the titanium connecting part 3 are fixed on the oral implant. Zirconia crane span structure 6 includes zirconium connecting portion 7, set up the recess on zirconium connecting portion 7 and be used for gluing on titanium metal crane span structure 2's bow-shaped somatic part 4, this recess is bonding recess 701 promptly, zirconia crane span structure 6 is fixed on titanium metal crane span structure 2 through the adhesion with bow-shaped somatic part 4, this kind of design and mechanical gomphosis combined action, can obtain long-term stable maintenance effect, avoid the coming off of zirconia veneer in the long-term use, among the prior art, pure zirconia bridge is in the manufacture process or wear the use in patient's oral cavity, the fracture of dental crane span structure all takes place easily, and pure zirconia crane span structure 6, the cost of manufacture is high, difficult processing, this kind of design is fine has overcome above shortcoming.
Further, the titanium connecting portion 201 has an abutting surface 205, the abutting surface 205 has a gingival tissue connecting surface 206 for fitting with gingival tissue of the oral cavity, and the gingival tissue connecting surface 206 is a smooth round protruding structure.
As shown in fig. 2, in this embodiment, in order to make the zirconium-titanium composite dental bridge better fit with the oral cavity gingival tissue, the inventor designs a gingival tissue connection surface 3011 for fitting with the oral cavity gingival tissue on the butt joint surface 301 of the titanium connection portion 3 and the oral cavity gingival tissue and the oral cavity implant platform 1, and designs the gingival tissue connection surface 3011 into a smooth round protruding structure, so as to achieve a better fitting effect.
Further, the arcuate body 202 has an arcuate projection 207, and the surface of the arcuate projection 207 is roughened and fitted into and adhesively bonded to the bonding groove 302.
As shown in fig. 2, in this embodiment, in order to make the connection between the arcuate body portion 4 and the bonding groove 701 of the zirconium connecting portion 7 more secure, the inventor designs an arcuate projection 402 on the arcuate body portion 4 to fit with the bonding groove 701, that is, the arcuate projection 402 can be fixed in the bonding groove 701 by adhesion, and in addition, the inventor designs the surface of the arcuate projection 402 as a rough surface, and increases the adhesion area between the arcuate projection 402 and the bonding groove 701, so that the connection between the arcuate body portion 4 and the zirconium connecting portion 7 is more secure.
Further, the connection part of the titanium connecting part 201 and the arched body part 202 is a thin-edge inward-contraction step 208, and the thin-edge inward-contraction step 208 is in fit butt joint with the zirconium connecting part 301.
As shown in fig. 2 to 5, in the present embodiment, the inventor designs the connection between the titanium connecting portion 3 and the arcuate body portion 4 as a thin-edge inward-folded step 8 structure, and such a structure is in butt joint with the zirconium connecting portion 7, so as to facilitate precise butt joint and support of the zirconium oxide facing material of the arcuate body portion 4.
Furthermore, the zirconia bridge 6 also comprises,
a gingival colored portion 303, provided on the zirconium connecting portion 301, for serving as a missing gingival tissue,
a crown portion 304, disposed on the gingival coloring portion 303, is configured to act as a missing tooth portion.
As shown in fig. 2 to 6, in the present embodiment, the inventor further designs a gum color portion 9 and a crown portion 10, which are respectively used as a missing gum tissue and a missing tooth portion, wherein the gum color portion 9 is a portion where a zirconia facing recovers the missing gum tissue, and a base portion thereof is zirconia, and the personalized bionic scanning, designing and cutting are completed according to the gum tissue morphology, and then a gum color porcelain material is manually and finely added on the surface of the zirconia base, and the steps of high-temperature sintering, fine modification and glazing are completed; the dental crown part 10 is a part for restoring a lost tooth, the base part of the dental crown part is made of zirconia, scanning, designing and cutting are finished according to actual conditions, then dental color porcelain materials are manually and finely added on the surface of the zirconia base, and the dental color porcelain is finished through high-temperature sintering, fine trimming and glazing liquid. The gum tissue and the tooth part are important parts in the oral cavity, and the gum color part 9 and the dental crown part 10 realize the recovery of the gum tissue and the tooth part, so that the whole body is more complete.
Further, the arcuate body 202 is integral or segmented.
In the embodiment, as shown in fig. 2 to 6, the inventor designs the arch body 4 as an integral or sectional type in consideration of the structural stability of the arch body 4, so that the dental bridge is more firm as a whole and the service life is prolonged.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A preparation method of a zirconium-titanium composite dental bridge for a toothless jaw is characterized in that the zirconium-titanium composite dental bridge is formed by connecting a titanium metal bridge frame and a zirconium oxide bridge frame, and comprises the following steps:
s1, obtaining a tooth three-dimensional file (A1),
s2, processing the tooth three-dimensional file (A1) to obtain a trial integral bridge (B1), adjusting the trial integral bridge (B1),
s3, carrying out three-dimensional scanning on the trial integral bridge (B1) to obtain a dental bridge three-dimensional file (A2),
s4, cutting the dental bridge three-dimensional file (A2) to obtain a titanium metal bridge three-dimensional file (A20), cutting according to the titanium metal bridge three-dimensional file (A20) to obtain a titanium metal bridge (B20),
obtaining a zirconia bridge three-dimensional file (A21) from a titanium metal bridge three-dimensional file (A20), cutting according to the zirconia bridge three-dimensional file (A21) to obtain a zirconia bridge (B21),
and S5, connecting the titanium metal bridge (B20) with the zirconia bridge (B21) to obtain the dental bridge (B3).
2. The method for preparing a zirconium-titanium composite dental bridge for edentulous jaw according to claim 1,
in the step S2, a trial integral bridge (B1) is obtained from the tooth three-dimensional file (A1) and is realized by 3D printing, and the trial integral bridge (B1) is a resin integral bridge,
in the step S3, when the trial whole bridge (B1) is scanned three-dimensionally to obtain the dental bridge three-dimensional file (A2), the adjustment and the three-dimensional scanning are performed for a plurality of times to obtain the optimized dental bridge three-dimensional file (A2),
in step S5, the connection is specifically fitting and/or bonding.
3. The method for preparing a zirconium-titanium composite dental bridge for edentulous jaw according to claim 1,
in step S4, cutting is performed, specifically, by using a digital cutting device,
the zirconium oxide three-dimensional file (A21) is obtained from a titanium metal bridge three-dimensional file (A20), specifically,
and (3) carrying out three-dimensional scanning on the titanium bridge (B20) to obtain a titanium bridge secondary three-dimensional file (A200), and carrying out automatic superposition calculation on the tooth bridge three-dimensional file (A2) and the titanium bridge secondary three-dimensional file (A200) to obtain a zirconium oxide three-dimensional file (A21).
The method also comprises the steps of crystallizing the zirconia bridge (B21) at high temperature, dyeing, firing the porcelain on the surface of the dental crown, sintering the porcelain on the surface of the dental crown, adding a gingival color porcelain material on the surface of the substrate of the zirconia bridge (B21), sintering at high temperature, finely trimming and glazing the porcelain to form a gingival color part, adding the gingival color porcelain material on the surface of the zirconia bridge, sintering at high temperature, finely trimming and glazing the porcelain to form the dental crown.
4. The method for preparing a zirconium-titanium composite dental bridge for edentulous jaws according to claim 1, wherein the step S5 is specifically as follows: anodizing the surface of the titanium metal, namely placing the titanium bridge in a sodium bicarbonate solution micro-current device, forming a golden anodic oxidation coating on the surface of the titanium metal bridge, changing the gray black of the titanium metal into golden yellow, and fixing the titanium metal bridge and the zirconia bridge aesthetic frame by a mechanical micro-embedding structure and a high-molecular dual-curing adhesive material.
5. A zirconium-titanium composite dental bridge for a toothless jaw is characterized by being used for being connected to an oral implant platform (1), wherein the oral implant platform (1) is provided with a threaded hole (101) and comprises,
a titanium metal bridge (2) comprising,
a titanium connecting part (201) connected with the oral implant platform (1),
an arcuate body (202) provided on the titanium connecting portion (3) and having a through hole (203),
a connecting screw (204) which passes through the through hole (203) and is in threaded connection with the threaded hole (101),
a zirconia bridge (3) comprising,
a zirconium connecting portion (301) having a bonding groove (302), the arcuate body portion (202) being bonded in the bonding groove (301).
6. The zirconium-titanium composite dental bridge for edentulous jaw according to claim 5, wherein the titanium connecting portion (201) has an abutment surface (205), the abutment surface (205) has a gingival tissue connecting surface (206) for fitting with oral gingival tissue, and the gingival tissue connecting surface (206) is a smooth round protruding structure.
7. The zirconium titanium composite dental bridge for edentulous jaw according to claim 5,
the arc-shaped body (202) is provided with an arc-shaped protrusion (207), and the surface of the arc-shaped protrusion (207) is rough and is matched with and connected with the bonding groove (302) in a bonding mode.
8. The zirconium titanium composite dental bridge for edentulous jaw according to claim 5,
the titanium connecting part (201) is connected with the arched body part (202) through a thin-edge inward-contraction step (208), and the thin-edge inward-contraction step (208) is in fit butt joint with the zirconium connecting part (301).
9. The zirconium titanium composite dental bridge for edentulous jaw according to claim 5, wherein said zirconia bridge frame (3) further comprises,
a gingival colored portion (303) provided on the zirconium connecting portion (301) for serving as a missing gingival tissue,
a crown portion (304) disposed on the gingival crevicular portion (303) for acting as a missing tooth portion.
10. The zirconium titanium composite dental bridge for edentulous jaws according to claim 5, wherein said arcuate body portion (202) is one piece or segmented.
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Inventor after: Gao Zhenhua Inventor after: Sun Lu Inventor before: Li Qiang Inventor before: Gao Zhenhua Inventor before: Sun Lu |