Preparation method and structure of zirconium-titanium composite dental bridge for edentulous jaw

Abstract

The invention relates to the technical field of dental implant restoration bridges, and proposes a method for preparing a zirconium-titanium composite dental bridge for edentulous jaws, comprising the following steps: S1, obtaining a three-dimensional tooth file A1; S2, processing the three-dimensional tooth file A1 to obtain a trial integral bridge B1, and adjusting the trial integral bridge B1; S3, performing three-dimensional scanning on the trial integral bridge B1 to obtain a three-dimensional dental bridge file A2; S4, cutting the three-dimensional dental bridge file A2 to obtain a titanium metal bridge frame three-dimensional file A20, cutting and processing the titanium metal bridge frame three-dimensional file A20 to obtain a titanium metal bridge frame B20, obtaining a zirconium oxide three-dimensional file A21 from the titanium metal bridge frame three-dimensional file A20, cutting and processing the zirconium oxide three-dimensional file A21 to obtain a zirconium oxide bridge frame B21; and S5, connecting the titanium metal bridge frame B20 and the zirconium oxide bridge frame B21 to obtain a dental bridge B3. Through the above technical scheme, the problem of poor quality of dental bridges in the prior art is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of dental implant restoration bridges, and in particular to a preparation method and structure of a zirconium-titanium composite dental bridge for edentulous jaws. Background Art

[0002] When teeth are missing, dental implants are placed in the remaining alveolar bone or jawbone in the edentulous area, and an artificial upper prosthesis, the crown, is installed on the implant. This can repair the missing teeth and restore chewing, pronunciation and aesthetic functions. This is currently recognized as the best solution both at home and abroad.

[0003] After the complete tooth loss, 4-6 dental implants are implanted in the remaining alveolar bone or jawbone of the maxillary or mandibular, and then a one-piece dental bridge is made on the upper part. There are usually four common production techniques for the upper one-piece dental bridge:

[0004] The first is to weld titanium connecting rods or CNC-cut titanium integrated bridge frames, use finished composite resin artificial teeth to row teeth, replicate silicone models, and complete them through injection molding, polymerization, grinding and polishing.

[0005] The second type is a personalized titanium one-piece bridge machined by CAD / CAM CNC lathe, with the surface covered with micro-filler light-cured gum-colored and tooth-colored polymer resin.

[0006] The third type is a personalized titanium metal one-piece bridge cut on a CAD / CAM CNC lathe. The gingival end surface of the bridge is covered with gingival-colored light-cured polymer resin, and the crown end is a zirconia crown, which is bonded to completion.

[0007] The fourth type is CAD / CAM integrally cut pure zirconia dental bridge.

[0008] Among them, the artificial teeth are completed by welding titanium connecting rods and resin, and the surface of the CNC-cut titanium integrated bridge is covered with micro-fillers and light-cured gum-colored and tooth-colored polymer resin. The interface between the artificial teeth and composite resin and the titanium bracket is mechanically retained or wrapped. The artificial tooth materials and resin materials are easy to break and peel off as a whole. In addition, the resin material has poor wear resistance, which quickly leads to the loss of the occlusal position relationship and occlusal height of the upper and lower teeth. The service life is relatively short and usually needs to be repaired or replaced every 3-5 years. The resin material itself is easy to age and color, and has poor aesthetic performance. In addition, the resin material has poor biocompatibility, and plaque microorganisms and soft scale are easily attached to the surface, which is not conducive to oral hygiene maintenance and the health of periodontal tissues such as the gums.

[0009] The personalized titanium metal integrated bridge frame cut by CAD / CAM CNC lathe is restored with gum-colored resin. Gum-colored resin also has poor wear resistance, is easy to age and stain, has poor biocompatibility, and is easily attached with plaque microorganisms and soft scale on the surface, which is not conducive to the maintenance of oral hygiene and the health of periodontal tissues such as the gums.

[0010] The production cost of integrally cut pure zirconia dental bridges is high and difficult to process. During the production process or when worn in the patient's mouth, the dental bridge is prone to breakage, and the full zirconia bridge is heavy.

[0011] The bridges used in the above four repair technologies have problems such as poor biocompatibility, easy breeding of bacteria, easy aging, and breakage, and the bridges need to be improved. Summary of the invention

[0012] The present invention provides a preparation method and structure of a zirconium-titanium composite dental bridge for an edentulous jaw, which solves the problem of poor quality of dental bridges in the related art.

[0013] The technical solution of the present invention is as follows:

[0014] A method for preparing a zirconium-titanium composite dental bridge for an edentulous jaw, wherein 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:

[0015] S1. Obtain the three-dimensional file of the tooth.

[0016] S2. Process the three-dimensional tooth file to obtain a trial integral bridge, and adjust the trial integral bridge.

[0017] S3. Perform a three-dimensional scan on the trial integral bridge to obtain a three-dimensional file of the dental bridge.

[0018] S4, cutting the three-dimensional file of the dental bridge to obtain a three-dimensional file of the titanium metal bridge frame, and cutting the three-dimensional file of the titanium metal bridge frame to obtain the titanium metal bridge frame,

[0019] The zirconia bridge frame 3D file is obtained from the titanium metal bridge frame 3D file, and the zirconia bridge frame is obtained by cutting according to the zirconia bridge frame 3D file.

[0020] S5. Connect the titanium metal bridge frame and the zirconium oxide bridge frame to obtain a dental bridge.

[0021] As a further technical solution, in step S2, a trial integral bridge is obtained from the three-dimensional tooth file by 3D printing, and the trial integral bridge is a resin integral bridge.

[0022] In step S3, the trial integral bridge is 3D scanned to obtain a 3D file of the dental bridge, and several adjustments and 3D scans are performed to obtain the optimal 3D file of the dental bridge.

[0023] In the step S5, the connection is specifically embedding and / or bonding.

[0024] As a further technical solution, in step S4, cutting processing is performed, specifically by digital cutting equipment.

[0025] The 3D file of the zirconia bridge is obtained from the 3D file of the titanium bridge, specifically,

[0026] The titanium metal bridge frame is 3D scanned to obtain the secondary 3D file of the titanium metal bridge frame. The 3D file of the dental bridge and the secondary 3D file of the titanium metal bridge frame are automatically overlapped and calculated to obtain the 3D file of the zirconia bridge frame.

[0027] It also includes high-temperature crystallization of the zirconia bridge frame, dyeing and crown veneer porcelain sintering, and gingival veneer porcelain sintering. The gingival color part is formed by adding gingival color porcelain material to the base surface of the zirconia bridge frame, high-temperature sintering, fine trimming and glazing liquid, and then the crown part is formed by adding tooth color porcelain material to the zirconia base surface, high-temperature sintering, fine trimming and glazing liquid.

[0028] As a further technical solution, step S5 is specifically as follows: anodizing the titanium metal surface, placing the titanium metal bridge in a sodium bicarbonate solution microcurrent device, forming a golden anodized coating on the surface of the titanium metal bridge, changing the gray-black color of the titanium metal to golden yellow, and then fixing the titanium metal bridge and the zirconium oxide bridge by a mechanical micro-chimeric structure and a polymer dual-curing adhesive material.

[0029] The utility model also provides a zirconium-titanium composite dental bridge for edentulous jaws, which is used to be connected to an oral implant platform, wherein the oral implant platform has a threaded hole, including:

[0030] Titanium bridge, with

[0031] The titanium connection part is connected to the oral implant platform in a fitting manner.

[0032] The arcuate body is arranged on the titanium connecting part and has a perforation.

[0033] A connecting screw passes through the through hole and is threadedly connected with the threaded hole.

[0034] Zirconia bridge, including

[0035] The zirconium connecting part has a bonding groove, and the arcuate body is bonded in the bonding groove.

[0036] As a further technical solution, the titanium connection part has a docking surface, and the docking surface has a gingival tissue connection surface for fitting with oral gingival tissue, and the gingival tissue connection surface is a smooth round protrusion structure.

[0037] As a further technical solution, the arched body has an arc-shaped protrusion, the surface of the arc-shaped protrusion is a rough surface and matches and is bonded to the bonding groove.

[0038] As a further technical solution, the connection between the titanium connecting portion and the arched body portion is a thin-edged inward step, and the thin-edged inward step is fitted and butted with the zirconium connecting portion.

[0039] As a further technical solution, the zirconia bridge frame further includes:

[0040] A gingival-colored portion, disposed on the zirconium connecting portion, is used to act as missing gingival tissue.

[0041] The crown portion is arranged on the gum color portion and is used to serve as the missing tooth portion.

[0042] As a further technical solution, the arched body is integral or segmented.

[0043] The working principle and beneficial effects of the present invention are:

[0044] In the present invention, in order to solve the problem that pure zirconia dental bridges are prone to breakage during the cutting process, the inventors adopted the design of a zirconium-titanium composite dental bridge, and connected 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 frame, and the other part is a zirconium oxide bridge frame. The combination of the titanium metal bridge frame and the zirconium oxide bridge frame avoids the problem that the pure zirconia dental bridge is overall heavy. Among them, the titanium metal bridge frame consists of a titanium connecting part, an arch body and a connecting screw. The titanium connecting part is connected to the oral implant platform, and the connection structure with the oral implant platform is a docking platform structure cut according to the implant restoration platform data. The titanium connecting part is the part that provides connection and support for the dental bridge to the gingival tissue and the implant, and the arch body is fixed on the titanium connecting part. In addition, the inventors also designed a connecting screw, which is installed in the threaded hole of the oral implant platform through a perforated thread to fix the arch body and the titanium connecting part to the oral implant. The zirconia bridge frame includes a zirconium connecting portion, on which a groove is provided for bonding to the arched body of the titanium metal bridge frame. This groove is the bonding groove. The zirconia bridge frame is fixed to the titanium metal bridge frame by bonding to the arched body. This design works together with mechanical interlocking to obtain a long-term stable retention effect and avoid the shedding of the zirconia finish during long-term use. In the prior art, pure zirconia dental bridges are prone to breakage during the manufacturing process or when worn in the patient's mouth. In addition, pure zirconia bridges have high manufacturing costs and are difficult to process. This design overcomes the above shortcomings well. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0046] Figure 1 It is a schematic diagram of the three-dimensional structure of the titanium metal bridge frame in the present invention;

[0047] Figure 2 It is a schematic diagram of the three-dimensional structure of the zirconium oxide bridge frame in the present invention;

[0048] Figure 3 It is a schematic diagram of the implant platform structure in the present invention;

[0049] Figure 4 It is a schematic diagram of the three-dimensional structure of the zirconium-titanium composite dental bridge for edentulous jaws in the present invention;

[0050] Figure 5 This is a schematic diagram of the three-dimensional structure of the titanium metal bridge and the zirconium oxide bridge combined in the present invention;

[0051] Figure 6 It is a schematic diagram of the side cross-sectional structure of the titanium metal bridge frame in the present invention;

[0052] Figure 7 The present invention is a schematic diagram of the process of preparing a zirconium-titanium composite dental bridge for an edentulous jaw.

[0053] In the figure: A1-tooth 3D file, B1-trial integral bridge, A2-tooth bridge 3D file, A20-titanium bridge frame 3D file, B20-titanium bridge frame, A21-zirconia bridge frame 3D file, B21-zirconia bridge frame, B3-tooth bridge, A200-titanium bridge frame secondary 3D file, 1-oral implant platform, 101-threaded hole, 2-titanium bridge frame, 201-titanium connection part, 202-arch body, 203-perforation, 204-connecting screw, 205-jointing surface, 206-gingival tissue connection surface, 207-arc-shaped protrusion, 208-thin edge inward step, 3-zirconia bridge frame, 301-zirconium connection part, 302-bonding groove, 303-gingival color part, 304-crown part. DETAILED DESCRIPTION

[0054] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0055] Example 1

[0056] like Figure 7 As shown, this embodiment provides a method for preparing a zirconium-titanium composite dental bridge for an edentulous jaw, comprising the following steps:

[0057] S1. Obtain the tooth 3D file A1.

[0058] S2, processing the tooth three-dimensional file A1 to obtain a trial integral bridge B1, and adjusting the trial integral bridge B1,

[0059] S3, perform a three-dimensional scan on the trial integral bridge B1 to obtain a three-dimensional dental bridge file A2,

[0060] S4, cutting the dental bridge three-dimensional file A2 to obtain a titanium metal bridge frame three-dimensional file A20, and cutting the titanium metal bridge frame three-dimensional file A20 to obtain a titanium metal bridge frame B20,

[0061] The zirconia bridge frame 3D file A21 is obtained from the titanium metal bridge frame 3D file A20, and the zirconia bridge frame B21 is obtained by cutting the zirconia bridge frame 3D file A21.

[0062] S5. Connect the titanium metal bridge frame B20 and the zirconium oxide bridge frame B21 to obtain a dental bridge B3.

[0063] Further, in step S2, a trial integral bridge B1 is obtained from the tooth three-dimensional file A1 by 3D printing, and the trial integral bridge B1 is a resin integral bridge.

[0064] In step S3, the trial integral bridge B1 is 3D scanned to obtain the 3D bridge file A2, and then several adjustments and 3D scans are performed to obtain the optimal 3D bridge file A2.

[0065] In step S5, the connection is specifically embedding and / or bonding.

[0066] Further, in step S4, cutting processing is performed, specifically by digital cutting equipment; the zirconia bridge frame 3D file A21 is obtained from the titanium metal bridge frame 3D file A20, specifically, the titanium metal bridge frame B20 is 3D scanned to obtain the titanium metal bridge frame secondary 3D file A200, and the dental bridge 3D file A2 is automatically overlapped with the titanium metal bridge frame secondary 3D file A200 to obtain the zirconia bridge frame 3D file A21,

[0067] It also includes high-temperature crystallization of the zirconia bridge frame B21, dyeing and sintering the crown veneer porcelain, and sintering the gingival veneer porcelain. It also includes artificially adding gingival-colored porcelain material to the base surface of the zirconia bridge frame B21, high-temperature sintering, fine trimming and glazing liquid to form the gingival-colored part, and then artificially adding tooth-colored porcelain material to the zirconia base surface, high-temperature sintering, fine trimming and glazing liquid to form the crown part.

[0068] Furthermore, step S5 specifically comprises anodizing the titanium metal surface, placing the titanium bridge frame in a sodium bicarbonate solution microcurrent device, and forming a golden anodized coating on the surface of the titanium metal bridge frame in 50 minutes, changing the gray-black color of the titanium metal to golden yellow, and then fixing the titanium metal bridge frame and the zirconium oxide bridge frame by a mechanical micro-chimeric structure and a polymer dual-curing adhesive material.

[0069] In this embodiment, the tooth three-dimensional file A1 in step S1 is obtained by digitally scanning the 3D data model data, analyzing and judging the case through CAD design software, and refining the teeth, dental arch shape, aesthetic effect and occlusal contact relationship in the virtual interface according to the occlusal alignment relationship of the upper and lower teeth and the position relationship of the dental arches. This is an STL format file of the future virtual dental bridge. This method is both accurate and efficient. After confirming that the obtained tooth three-dimensional file A1 is correct, a high-strength all-resin integral bridge is printed through a digital 3D printer. This high-strength all-resin integral bridge is the trial integral bridge B1.

[0070] The adjustment in step S2 is to first try out the integral bridge B1 in the clinical oral cavity, and after confirmation, conduct a second scan and try out to confirm the full resin integral bridge.

[0071] The all-resin integral bridge after the second scan and trial wear confirmation is imported into the restoration design software to generate the final virtual dental bridge. This final virtual dental bridge is the dental bridge three-dimensional file A2 in step S3.

[0072] In step S4, the specific operation of back-cutting and calculating to obtain the titanium bridge frame three-dimensional file A20 is as follows: the dental bridge three-dimensional file A2 is back-cut by the software, and a virtual titanium bridge frame that meets the characteristics of the personalized dental arch is preferably designed. The virtual titanium bridge frame is the dental bridge three-dimensional file A2, and then its data is imported into the digital cutting equipment to cut and generate a solid titanium bridge frame B20. After manual trimming and polishing, and clinical confirmation, the titanium bridge frame B20 is completed. The specific operation of obtaining the zirconia bridge frame three-dimensional file A21 is as follows: the completed titanium bridge frame B20 is scanned again and imported into the computer restoration design software; at this time, the virtual data of the second-scanned full-resin bridge frame and the virtual data of the second-scanned titanium bridge frame, that is, the titanium bridge frame secondary three-dimensional file A200 and the dental bridge three-dimensional file A2 are automatically overlapped and calculated by the software, and then the virtual data of the zirconia cut bridge frame can be generated, wherein the automatic overlap is based on the graphics of the titanium bridge frame secondary three-dimensional file A200 and the zirconia bridge frame three-dimensional The virtual data of the zirconia cutting bridge can be obtained by reverse engineering the secondary 3D file A200 of the titanium metal bridge. The virtual data of the zirconia cutting bridge is the 3D file A21 of the zirconia bridge. The data of the 3D file A21 of the zirconia bridge is typeset and input into the cutting machine to generate a personalized segmented or integrated zirconia veneer bridge part, which is completed by high-temperature crystallization, dyeing, crown veneer porcelain firing, and gum veneer porcelain sintering to complete the zirconia aesthetic bridge, which is the zirconia bridge B21.

[0073] In step S5, the specific operation of obtaining the dental bridge B3 is that the titanium metal bridge frame B20 and the zirconium oxide bridge frame B21 are fixed by a mechanical micro-chimeric structure and a polymer dual-curing adhesive material.

[0074] In the present embodiment, in order to obtain the titanium metal bridge frame B20 and the zirconia bridge frame B21, the trial integral bridge B1 is first processed. Because the trial integral bridge B1 can adopt common materials such as resin, it is more convenient to process, the cost is lower, and the adjustment is simple, so it is more convenient to make a dental bridge that better meets the needs, thereby effectively avoiding the direct processing of the titanium metal bridge frame B20 and the zirconia bridge frame B21, which do not fit and meet the requirements, resulting in waste and greatly increased costs. The design of the trial integral bridge B11 has greatly improved the processing efficiency and product quality.

[0075] In the present embodiment, a composite bridge frame of titanium metal bridge frame B20 and zirconia bridge frame B21 is used. On the one hand, this design overcomes the difficulties in the cutting process of pure zirconia one-piece dental bridge, such as easy breakage during the sintering process, large deformation rate, and high processing difficulty, as well as the problems of easy breakage and heavy weight in the oral cavity in the long term. On the other hand, it completely solves the problems in the composite restoration technology of metal bridge frame plus resin material, such as composite resin prefabricated artificial teeth and fine-tuning materials that conform to the resin color, single shape or poor color, which cannot meet personalized needs, and the uncontrollability of manual production in most links, and the final result often has a large deviation, and the expected result cannot be seen in advance, etc., and the shortcomings of the preliminary design; and the prefabricated artificial teeth, micro-filler light-cured gum-colored and tooth-colored polymerized resin materials, etc., have poor wear resistance, aging, coloring, plaque accumulation, are difficult to clean, and are not conducive to the health of oral soft tissues.

[0076] Example 2

[0077] like Figure 1 to Figure 6 As shown, this embodiment also provides a zirconium-titanium composite dental bridge for edentulous jaws, which is used to be connected to an oral implant platform 1. The oral implant platform 1 has a threaded hole 101, including:

[0078] Titanium bridge 2, including:

[0079] The titanium connection part 201 is connected to the oral implant platform 1.

[0080] The arched body 202 is disposed on the titanium connecting part 201 and has a through hole 203.

[0081] The connecting screw 204 passes through the through hole 203 and is threadedly connected with the threaded hole 101.

[0082] Zirconia bridge 3, including,

[0083] The zirconium connecting portion 301 has a bonding groove 302 , and the arcuate body portion 202 is bonded in the bonding groove 302 .

[0084] In this embodiment, in order to solve the problem that the pure zirconia dental bridge is easy to break during the cutting process, the inventor adopts the design of a zirconium-titanium composite dental bridge, and connects the zirconium-titanium composite dental bridge to the oral implant platform 1 for use. The zirconium-titanium composite dental bridge consists of two parts, one part is a titanium metal bridge frame 2, and the other part is a zirconium oxide bridge frame 3. The combination of the titanium metal bridge frame 2 and the zirconium oxide bridge frame 3 avoids the problem that the pure zirconia dental bridge is overall heavy. Among them, the titanium metal bridge frame 2 consists of a titanium connecting part 201, an arch body 4 and a connecting screw 204. The titanium connecting part 201 is connected to the oral implant platform 1, and the connection structure with the oral implant platform 1 is a docking platform structure cut according to the implant restoration platform data. The titanium connecting part 201 is the part that provides connection and support for the dental bridge, the gingival tissue and the implant. The arch body 4 is fixed on the titanium connecting part 201. In addition, the inventor has also designed a connecting screw 5, which is threadedly installed in the threaded hole 101 of the oral implant platform 1 through the through hole 401 to fix the arch body 4 and the titanium connecting part 201 on the oral implant. The zirconia bridge frame 3 includes a zirconium connecting portion 301, and a groove is provided on the zirconium connecting portion 301 for bonding to the arched body 4 of the titanium metal bridge frame 2. The groove is the bonding groove 302. The zirconia bridge frame 3 is fixed to the titanium metal bridge frame 2 by bonding to the arched body 4. This design works together with the mechanical interlocking to obtain a long-term and stable retention effect, thereby avoiding the shedding of the zirconia finish during long-term use. In the prior art, pure zirconia dental bridges are prone to breakage during the manufacturing process or when worn in the patient's mouth. In addition, the pure zirconia bridge frame 3 has a high manufacturing cost and is difficult to process. This design overcomes the above shortcomings well.

[0085] Furthermore, the titanium connection part 201 has a docking surface 205, and the docking surface 205 has a gingival tissue connection surface 206 for fitting with oral gingival tissue, and the gingival tissue connection surface 206 is a smooth round protrusion structure.

[0086] like Figure 2 As shown, in this embodiment, in order to make the zirconium-titanium composite dental bridge better fit with the oral gingival tissue, the inventor designed a gingival tissue connecting surface 3011 for fitting with the oral gingival tissue on the docking surface 205 between the titanium connecting part 201 and the oral gingival tissue and the oral implant platform 1, and designed the gingival tissue connecting surface 3011 to be a smooth round protrusion structure, which can achieve a better fitting effect.

[0087] Furthermore, the arcuate body 202 has an arc-shaped protrusion 207 , the surface of which is a rough surface and matches and is bonded to the bonding groove 302 .

[0088] like Figure 2As shown, in the present embodiment, in order to make the connection between the arched body 4 and the bonding groove 302 of the zirconium connecting portion 301 more secure, the inventor designed an arcuate protrusion 402 on the arched body 4 to cooperate with the bonding groove 302, that is, the arcuate protrusion 402 can be fixed in the bonding groove 302 by bonding. In addition, the inventor also designed the surface of the arcuate protrusion 402 to be a rough surface, thereby increasing the bonding area between the arcuate protrusion 402 and the bonding groove 302, thereby making the connection between the arched body 4 and the zirconium connecting portion 301 more secure.

[0089] Furthermore, the connection between the titanium connecting portion 201 and the arched body portion 202 is a thin-edge inward step 208 , and the thin-edge inward step 208 is fitted and butted with the zirconium connecting portion 301 .

[0090] like Figure 2~Figure 5 As shown, in this embodiment, the inventor designs the connection between the titanium connecting part 201 and the arched body 4 as a thin-edged inward step 8 structure, which fits well with the zirconium connecting part 301 to facilitate the precise docking and support of the zirconium oxide facing material of the arched body 4.

[0091] Further, the zirconia bridge 3 also includes:

[0092] The gingival color portion 303 is disposed on the zirconium connection portion 301 and is used to act as the missing gingival tissue.

[0093] The crown portion 304 is disposed on the gum-colored portion 303 and is used to serve as a missing tooth portion.

[0094] like Figure 2~Figure 6 As shown, in this embodiment, the inventor also designed a gingival color part 9 and a crown part 10, which are used to serve as the missing gingival tissue and tooth part respectively, wherein the gingival color part 9 is a part of the zirconia veneer to restore the missing gingival tissue, and its base is zirconia, which is scanned, designed and cut according to the personalized bionics of the gingival tissue morphology, and then the gingival color porcelain material is finely added to the surface of the zirconia base, and it is sintered at high temperature, refined and glazed; the crown part 10 is a part to restore the missing teeth, and its base is zirconia, which is scanned, designed and cut according to the actual situation, and then the tooth color porcelain material is finely added to the surface of the zirconia base, and it is sintered at high temperature, refined and glazed. The gingival tissue and tooth part are very important parts in the oral cavity, and the gingival color part 9 and the crown part 10 realize the restoration of the gingival tissue and tooth part, making the whole more complete.

[0095] Furthermore, the arcuate body 202 is of an integral type or a segmented type.

[0096] like Figure 2~Figure 6 As shown, in this embodiment, the inventors consider the stability of the arch body 4 structure and design the arch body 4 as an integrated or segmented type, so that the dental bridge as a whole is more secure and the service life is extended.

[0097] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for preparing a zirconium-titanium composite dental bridge for an edentulous jaw, characterized in that: The zirconium-titanium composite dental bridge is made of a titanium metal bridge frame and a zirconium oxide bridge frame, and includes the following steps: S1. Obtain the three-dimensional tooth file (A1). S2, processing the tooth three-dimensional file (A1) to obtain a trial integral bridge (B1), and adjusting the trial integral bridge (B1), S3, perform a three-dimensional scan on the trial integral bridge (B1) to obtain a three-dimensional file of the dental bridge (A2). S4, cutting the dental bridge three-dimensional file (A2) to obtain a titanium metal bridge frame three-dimensional file (A20), and cutting the titanium metal bridge frame three-dimensional file (A20) to obtain a titanium metal bridge frame (B20), The zirconia bridge frame 3D file (A21) is obtained from the titanium metal bridge frame 3D file (A20), and the zirconia bridge frame (B21) is obtained by cutting according to the zirconia bridge frame 3D file (A21). S5. Connect the titanium metal bridge frame (B20) and the zirconium oxide bridge frame (B21) to obtain a dental bridge (B3).

2. The method for preparing a zirconium-titanium composite dental bridge for an edentulous jaw according to claim 1, characterized in that: In the step S2, a trial integral bridge (B1) is obtained from the tooth three-dimensional file (A1) by 3D printing, and the trial integral bridge (B1) is a resin integral bridge. In the step S3, the trial integral bridge (B1) is subjected to a three-dimensional scan to obtain a three-dimensional dental bridge file (A2), and then several adjustments and three-dimensional scans are performed to obtain an optimized three-dimensional dental bridge file (A2). In the step S5, the connection is specifically embedding and / or bonding.

3. The method for preparing a zirconium-titanium composite dental bridge for edentulous jaw according to claim 1, characterized in that: In step S4, cutting processing is performed, specifically by using a digital cutting device. The zirconia bridge 3D file (A21) is obtained from the titanium metal bridge 3D file (A20), specifically, The titanium metal bridge frame (B20) is 3D scanned to obtain a secondary 3D file of the titanium metal bridge frame (A200), and the dental bridge 3D file (A2) is automatically overlapped with the secondary 3D file of the titanium metal bridge frame (A200) to obtain a 3D file of the zirconia bridge frame (A21); It also includes high-temperature crystallization of the zirconia bridge frame (B21), dyeing and sintering of the crown veneer porcelain, and sintering of the gingival veneer porcelain. The gingival color part is formed by adding gingival color porcelain material to the base surface of the zirconia bridge frame (B21), high-temperature sintering, fine trimming and glazing liquid, and then the crown part is formed by adding tooth color porcelain material to the zirconia base surface, high-temperature sintering, fine trimming and glazing liquid.

4. The method for preparing a zirconium-titanium composite dental bridge for edentulous jaw according to claim 1, characterized in that: The step S5 specifically comprises: anodizing the titanium metal surface, placing the titanium metal bridge (B20) in a sodium bicarbonate solution microcurrent device, forming a golden anodized coating on the surface of the titanium metal bridge (B20), changing the gray-black color of the titanium metal to golden yellow, and then fixing the titanium metal bridge (B20) and the zirconium oxide bridge (B21) by a mechanical micro-chimeric structure and a polymer dual-curing adhesive material.

5. A zirconium-titanium composite dental bridge for edentulous jaws, characterized in that: Used to be connected to an oral implant platform (1), the oral implant platform (1) having a threaded hole (101), comprising: Titanium bridge (2), comprising: The titanium connecting portion (201) is connected to the oral implant platform (1). The bow-shaped body (202) is arranged on the titanium connecting part (201) and has a through hole (203). A connecting screw (204) passes through the through hole (203) and is threadedly connected to the threaded hole (101). Zirconia bridge (3), comprising, The zirconium connecting portion (301) has a bonding groove (302), and the arched body portion (202) is bonded into the bonding groove (302).

6. The zirconium-titanium composite dental bridge for edentulous jaws according to claim 5, characterized in that: The titanium connection part (201) has a docking surface (205), and the docking surface (205) has a gingival tissue connection surface (206) for fitting with oral gingival tissue, and the gingival tissue connection surface (206) is a smooth round protrusion structure.

7. The zirconium-titanium composite dental bridge for edentulous jaws according to claim 5, characterized in that: The arched body (202) has an arc-shaped protrusion (207); the surface of the arc-shaped protrusion (207) is a rough surface and is matched with and bonded to the bonding groove (302).

8. The zirconium-titanium composite dental bridge for edentulous jaws according to claim 5, characterized in that: The connection point between the titanium connection part (201) and the arched body part (202) is a thin-edge inward step (208), and the thin-edge inward step (208) is fitted and butted with the zirconium connection part (301).

9. The zirconium-titanium composite dental bridge for edentulous jaws according to claim 5, characterized in that: The zirconia bridge (3) further comprises: The gingival-colored portion (303) is disposed on the zirconium connecting portion (301) and is used to serve as missing gingival tissue. The tooth crown portion (304) is arranged on the gum color portion (303) and is used to serve as a missing tooth portion.

10. The zirconium-titanium composite dental bridge for edentulous jaws according to claim 5, characterized in that: The arched body (202) is of an integral type or a segmented type.

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