Titanium-zirconium alloy dental implant and method of manufacturing the same

Abstract

The application discloses a titanium-zirconium alloy dental implant and a manufacturing method thereof, and belongs to the technical field of biological medical device manufacturing. Three supporting feet are uniformly arranged on the circumference of the small-diameter end of the conical tube along the generatrix direction, which not only ensures the area and stability of the contact between the implant and the jaw bone, but also is beneficial to the growth and tightness of the bone tissue. The hollow tubular structure of the implant body has more than 50% higher bending deformation resistance than the solid columnar structure, effectively ensures the stability of the implant when biting food, and prevents the implant from loosening caused by micro-deformation. The crown base is an important bearing part of the implanted tooth, and in the process of food biting and chewing, the crown body transmits the biting force to the implant body and the jaw bone through the pile of the crown body base. The side wall of the circular table cooperates with the inner hole wall of the large-diameter end of the conical tube, and the convex rib cooperates with the groove, so as to realize the positioning of the crown base and prevent the displacement of the crown base in the circumferential direction.

Description

Technical Field

[0001] This invention belongs to the field of biomedical device manufacturing technology, and more specifically relates to a titanium-zirconium alloy dental implant and its manufacturing method. Background Technology

[0002] Titanium alloys are increasingly widely used in dental implants due to their excellent biocompatibility. With the growing demand for dental implants, the domestic dental implant market currently relies heavily on imports from South Korea, Germany, and Switzerland, all made of pure titanium. However, several major problems exist. Firstly, there's the issue of the implant material itself. Pure titanium implants have relatively low strength, typically between 400-500 MPa. While this is adequate for incisors and nearby teeth, it's insufficient for the first, second, and third molars, which primarily function in chewing. This leads to micro-deformation of the implant during chewing, which is the most significant reason for its reduced lifespan. Secondly, there's the issue of implant shape and structure. Currently, all implants are conical with threads on the surface, with the apex either rounded or slightly flattened. This is primarily to minimize the surgical incision during implantation. However, due to the small contact area between the implant and the jawbone, relying solely on the threads on the implant surface for fusion with the jawbone limits bone strength, resulting in poor implant stability. In contrast, natural progenitor teeth, especially the first, second, and third molars, have two or three columellar bases that fuse with the jawbone, providing excellent stability during chewing. Thirdly, most existing implants require two surgeries. The first surgery involves drilling a hole in the jawbone, installing the implant, and observing the success rate for about three months. The second surgery involves cutting open the gingival tissue covering the implant to install the crown abutment. The connection between the crown abutment and implant is mostly threaded, with a few using a tapered static fit. Both methods present uncertainties in the positioning of the crown abutment and crown. Since the forces on teeth during chewing are random and uneven, the forces on the implant also vary randomly, affecting its lifespan.

[0003] Therefore, how to develop a titanium-zirconium alloy dental implant that improves the lifespan and success rate of implants and its manufacturing method are technical problems that urgently need to be solved by those skilled in the art. Summary of the Invention

[0004] In view of this, the present invention provides a titanium-zirconium alloy dental implant and a method for manufacturing the same.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A titanium-zirconium alloy dental implant includes an implant body and a crown abutment, wherein the implant body and the crown abutment are designed separately.

[0007] The implant body is a hollow conical tube with threads on the surface. The inner wall of the large-diameter end of the conical tube has several grooves evenly arranged along the generatrix. The small-diameter end of the conical tube is the end that contacts and fixes the jawbone. Three through holes are evenly arranged along the generatrix on the circumference of the small-diameter end of the conical tube, forming three support legs.

[0008] The aforementioned crown abutment includes a frustum and a cylinder with a tubular structure. The bottom end of the cylinder is fixedly connected to the center of the large-diameter end face of the frustum. The sidewall of the frustum is uniformly provided with a number of protruding ridges along the generatrix direction, and the two ends of the protruding ridges extend to the two end faces of the frustum.

[0009] The sidewall of the aforementioned frustum mates with the inner wall of the large-diameter end of the aforementioned conical tube, the large-diameter end of the aforementioned frustum mates with the inner diameter of the large-diameter end of the aforementioned conical tube, and the aforementioned protruding ridge mates with the aforementioned groove.

[0010] The beneficial effects of this invention are as follows: Three through holes are evenly arranged along the generatrix on the circumference of the small-diameter end of the conical tube, forming three support legs. This ensures the contact area and stability between the implant and the jawbone, and also promotes bone tissue growth and tight connection. The hollow tubular structure of the implant body has more than 50% higher resistance to bending deformation than a solid columnar structure, effectively ensuring the stability of the implant during food biting and preventing implant loosening caused by micro-deformation.

[0011] The abutment is a crucial force-bearing component of a dental implant. During chewing, the crown transmits occlusal forces to the implant and jawbone through the post and post of the abutment. The sidewall of the frustum mates with the inner wall of the large-diameter end of the conical tube, and the large-diameter end of the frustum mates with the inner diameter of the large-diameter end of the conical tube. The convex ridge mates with the aforementioned groove, serving to position the abutment and prevent circumferential displacement.

[0012] Furthermore, the wall thickness of the hollow cone is 1.0-1.5 mm, and the height is 10-20 mm.

[0013] The beneficial effects of adopting the above-mentioned further technical solutions are: while ensuring the compressive strength of the implant, it also ensures the maximization of its bending resistance and prevents loosening due to implant deformation.

[0014] Furthermore, the outer wall diameter of the large-diameter end of the conical tube is 5-7 mm, and the outer wall diameter of the small-diameter end of the conical tube is 3-5 mm.

[0015] The beneficial effects of adopting the above-mentioned further technical solutions are: ensuring the tightness of the implant placement process and the integration with the jawbone and gingival tissue.

[0016] Furthermore, the height of the aforementioned groove is the same as the height of the frustum, the height of the groove is 2-4mm, the width is 0.2-0.3mm, and the depth is 0.3-0.5mm.

[0017] The beneficial effects of adopting the above-mentioned further technical solutions are as follows: the above-mentioned combination can effectively prevent the rotation and stability of the abutment, and prevent the micro-rotation of the abutment caused by uneven force during the biting process.

[0018] Furthermore, the number of the aforementioned grooves is 3, and the number of the aforementioned protrusions is 3.

[0019] Furthermore, the height of the aforementioned through hole is 1-2 mm, and the width is 0.3-0.5 mm.

[0020] The beneficial effects of adopting the above-mentioned further technical solutions are: in accordance with the principles of mechanics, the stability of triangular support is much higher than that of single-point support.

[0021] Furthermore, the implant body and crown abutment mentioned above both contain the following components by weight percentage: Zr 13.00-17.00%, Ag 0.30-0.45%, Ti balance; impurity control range: O < 0.12%, N < 0.002%, H < 0.001%, C < 0.008%, Fe < 0.05%.

[0022] The beneficial effects of adopting the above-mentioned further technical solutions are as follows: Implant materials must not only consider biocompatibility but also corrosion resistance and antibacterial properties. This is because the oral environment is far more complex than that of other human implants. The food we ingest daily changes constantly, creating a complex and variable oral environment that includes not only oxidizing acids but also reducing acids. Pure titanium has low resistance to reducing acids. Since food debris inevitably remains in the gaps between teeth and at the root, its antibacterial properties against anaerobic bacteria also help protect the gingival tissue of the implant patient, preventing periodontal inflammation and loosening. Therefore, the above-mentioned high-performance rods are used as the raw materials for implant manufacturing. The abutment, being a crucial load-bearing component of the implant, is also made of high-strength, corrosion-resistant titanium-zirconium rods.

[0023] The present invention also provides a method for manufacturing the above-mentioned titanium-zirconium alloy dental implant, comprising the following steps:

[0024] (1) Drawings for designing titanium-zirconium alloy dental implants;

[0025] (2) Digital modeling;

[0026] (3) Titanium alloy rods are manufactured according to the above composition;

[0027] (4) Laser cutting of titanium alloy rods;

[0028] (5) The implant body and crown abutment are manufactured using a CNC machining center;

[0029] (6) Precision grinding is performed using a CNC grinding machine;

[0030] (7) Polishing;

[0031] (8) Ultrasonic cleaning of the implant body and abutment;

[0032] (9) Surface anodizing treatment;

[0033] (10) Test and obtain the finished product.

[0034] The beneficial effects of this invention are as follows: This invention uses digital machining, and the implant body and crown abutment surfaces are anodized to further improve their corrosion resistance and biocompatibility. Attached Figure Description

[0035] Figure 1 An exploded view of a titanium-zirconium alloy dental implant assembly;

[0036] Figure 2 This is a cross-sectional view of the implant itself;

[0037] Figure 3 This is a schematic diagram of the structure of a dental crown abutment;

[0038] Figure 4 This is a cross-sectional view of the crown abutment;

[0039] Figure 5 A schematic diagram of the three-dimensional structure of a titanium-zirconium alloy dental implant assembly. Figure 1 ;

[0040] Figure 6 A schematic diagram of the three-dimensional structure of a titanium-zirconium alloy dental implant assembly. Figure 2 ;

[0041] Among them, 1-implant body, 2-crown abutment, 3-groove, 4-through hole, 5-support foot, 6-frustum, 7-cylinder, 8-protruding ridge. Detailed Implementation

[0042] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] like Figure 1-6 As shown, the titanium-zirconium alloy dental implant includes an implant body 1 and a crown abutment 2, and the implant body 1 and the crown abutment 2 adopt a separate design;

[0044] The implant body 1 is a hollow conical tube with threads on the surface. The inner wall of the large diameter end of the conical tube is uniformly provided with several grooves 3 along the generatrix direction. The small diameter end of the conical tube is the end that contacts and fixes the jawbone. Three through holes 4 are uniformly provided on the circumference of the small diameter end of the conical tube along the generatrix direction, forming three support legs 5.

[0045] The crown abutment 2 includes a frustum 6 and a cylinder 7 with a tubular structure. The bottom end of the cylinder 7 is fixedly connected to the center of the large-diameter end face of the frustum 6. The side wall of the frustum 6 is uniformly provided with a number of protruding ribs 8 along the generatrix direction. The two ends of the protruding ribs 8 extend to the two end faces of the frustum 6.

[0046] The side wall of the frustum 6 mates with the inner wall of the large-diameter end of the conical tube, the large-diameter end of the frustum 6 mates with the inner diameter of the large-diameter end of the conical tube, and the protruding ridge 8 mates with the groove 3.

[0047] In one embodiment, the hollow cone has a wall thickness of 1.0-1.5 mm and a height of 10-20 mm.

[0048] In one embodiment, the outer wall diameter of the large-diameter end of the conical tube is 5-7 mm, and the outer wall diameter of the small-diameter end of the conical tube is 3-5 mm.

[0049] In one embodiment, the height of the groove 3 is the same as the height of the frustum 6, the height of the groove 3 is 2-4mm, the width is 0.2-0.3mm, and the depth is 0.3-0.5mm.

[0050] In one embodiment, there are 3 grooves 3 and 3 protrusions 8.

[0051] In one embodiment, the height of the through hole 4 is 1-2 mm and the width is 0.3-0.5 mm.

[0052] In one embodiment, both the implant body 1 and the crown abutment 2 comprise the following components by weight percentage: Zr 13.00-17.00%, Ag 0.30-0.45%, Ti balance; impurity control range: O < 0.12%, N < 0.002%, H < 0.001%, C < 0.008%, Fe < 0.05%.

[0053] A method for manufacturing titanium-zirconium alloy dental implants includes the following steps:

[0054] (1) Drawings for designing titanium-zirconium alloy dental implants;

[0055] (2) Digital modeling;

[0056] (3) Manufacturing titanium alloy bars according to their composition;

[0057] (4) Laser cutting of titanium alloy rods;

[0058] (5) The implant body and crown abutment 2 are manufactured using a CNC machining center;

[0059] (6) Precision grinding is performed using a CNC grinding machine;

[0060] (7) Polishing;

[0061] (8) Ultrasonic cleaning of implant body 1 and abutment;

[0062] (9) Surface anodizing treatment;

[0063] (10) Test and obtain the finished product.

[0064] In this embodiment of the invention, the titanium alloy rod is manufactured according to the method of manufacturing a novel medical dental corrosion-resistant and antibacterial titanium alloy with application publication number CN 115466868 A and invention titled "Manufacturing Method of a Novel Medical Dental Corrosion-Resistant and Antibacterial Titanium Alloy".

[0065] 1. The production process of zirconium-silver master alloy is as follows:

[0066] Sponge zirconium (Zr > 99.9%) + silver powder (Ag > 99.90%) are mixed and placed in the vacuum electron beam furnace feed box. The vacuum electron beam furnace is then evacuated. The zirconium-silver alloy ingot is melted under high vacuum. The intermediate alloy ingot is cooled in the furnace under high vacuum. The intermediate alloy ingot is removed from the furnace at room temperature after the vacuum is broken. The composition of the intermediate alloy is analyzed. The intermediate alloy ingot is machined to particles (or shaved). The ingot is then tested, packaged, and ready for use.

[0067] 2. The production process of titanium alloy ingots is as follows:

[0068] Sponge titanium (GB0 grade or above) + sponge zirconium (1 grade or above) + zirconium-silver master alloy mixing — hydraulic press extrusion of titanium alloy consumable electrode blocks — vacuum welding box assembly of titanium alloy consumable electrodes — vacuum consumable furnace primary melting — ingot cooling and unloading from the furnace — machining of the head, tail and surface of the primary consumable ingot — assembly of secondary consumable electrodes — vacuum consumable furnace secondary melting — argon-assisted cooling of titanium alloy ingot — ingot room temperature vacuum breaking and unloading from the furnace — machining of the head and tail of the ingot and peeling of the ingot surface — alloy composition and impurity analysis by sampling five points at the top, middle and bottom of the ingot — testing and storage for future use;

[0069] 3. The manufacturing process of titanium alloy bars is as follows:

[0070] Titanium alloy ingot electric furnace heating — hydraulic high-speed forging machine free forging billet opening — billet grinding — sawing and blanking — three or more hydraulic high-speed forging machine upsetting and drawing forging — rough billet grinding — radial forging machine precision forging of bars — grinding bar surface — hot rolling mill rolling of fine bars — peeling and grinding bar surface — proprietary patented technology warm drawing — bar straightening — bar polishing — mechanical property testing, microstructure testing — surface quality testing and flaw detection — dimensional specifications and tolerance testing — packaging and warehousing;

[0071] Opening temperature: 1100-1150℃;

[0072] Precision forging temperature: 930-980℃;

[0073] Hot rolling temperature: 950-980℃;

[0074] Wintrade temperature: 600-800℃;

[0075] Tissue control: The alloy is an α-structure titanium alloy, and the grain size is controlled at or above level 3 of the international medical titanium alloy standard.

[0076] 4. Antibacterial treatment process:

[0077] Mechanical processing of implants: cleaning of finished products – placing them in a vacuum heat treatment furnace – vacuuming – heating to 450-650℃ – holding for more than 8 hours – cooling and removing from the furnace – inspection and packaging.

[0078] 5. Corrosion resistance test of titanium alloy;

[0079] Sulfuric acid: Concentration 3-5%; Temperature: Room temperature; Time: 180 days; Corrosion rate: <0.01mm / year;

[0080] Hydrochloric acid: Concentration 1-5%; Temperature: Room temperature; Time: 180 days; Corrosion rate: <0.01mm / year;

[0081] Acetic acid: Concentration 7-9%; Temperature: Room temperature; Time: 180 days; Corrosion rate: <0.001mm / year;

[0082] Salt water concentration: 5-15%; Temperature: room temperature; Time: 180 days; Corrosion rate: <0.001mm / year;

[0083] Soda ash solution; concentration 3-5%; temperature: room temperature; time: 180 days; corrosion rate: <0.001mm / year;

[0084] 6. Antibacterial test;

[0085] An antibacterial test was commissioned to a hospital in Shenyang. The results showed that the inactivation rate of three common anaerobic bacteria in the gingival and periodontal tissues was >90%.

[0086] Example 1

[0087] The titanium-zirconium alloy incisor implant includes an implant body 1 and a crown abutment 2, which are designed to be separate.

[0088] The implant body 1 is a hollow conical tube with threads on its surface. The wall thickness of the hollow cone is 1.0 mm, and the height is 10 mm. The outer diameter of the large-diameter end of the conical tube is 5 mm, and the outer diameter of the small-diameter end is 3 mm. Three grooves 3 are evenly distributed along the generatrix on the inner wall of the large-diameter end of the conical tube. The height of the grooves 3 is the same as the height of the frustum 6, and the grooves 3 are 2 mm high, 0.2 mm wide, and 0.3 mm deep. The small-diameter end of the conical tube is the contact and fixation end with the jawbone. Three through holes 4 are evenly distributed along the generatrix on the circumference of the small-diameter end of the conical tube. The height of the through holes 4 is 1 mm, and the width is 0.3 mm, forming three support legs 5.

[0089] The crown abutment 2 includes a frustum 6 and a cylinder 7 with a tubular structure. The bottom end of the cylinder 7 is fixedly connected to the center of the large-diameter end face of the frustum 6. The side wall of the frustum 6 is uniformly provided with three protruding ribs 8 along the generatrix direction. The two ends of the protruding ribs 8 extend to the two end faces of the frustum 6.

[0090] The side wall of the frustum 6 mates with the inner wall of the large-diameter end of the conical tube, the large-diameter end of the frustum 6 mates with the inner diameter of the large-diameter end of the conical tube, and the protruding ridge 8 mates with the groove 3.

[0091] Both the implant body 1 and the crown abutment 2 contain the following components by weight percentage: Zr 15.02%, Ag 0.31%, Ti balance; impurity control range: O < 0.12%, N < 0.002%, H < 0.001%, C < 0.008%, Fe < 0.05%.

[0092] Mechanical properties of processed materials

[0093] σb1050-1200MPa

[0094] σ0.2 990-1030MPa

[0095] δ18-22%

[0096] Ψ21-28%

[0097] Mechanical properties: tensile strength 980 MPa, elongation 20%.

[0098] A method for manufacturing titanium-zirconium alloy dental implants includes the following steps:

[0099] (1) Drawings for designing titanium-zirconium alloy dental implants;

[0100] (2) Digital modeling;

[0101] (3) Titanium alloy bars are manufactured according to their composition, and the manufacturing method is as follows:

[0102] (4) Laser cutting of titanium alloy rods;

[0103] (5) The implant body and crown abutment 2 are manufactured using a CNC machining center;

[0104] (6) Precision grinding is performed using a CNC grinding machine;

[0105] (7) Polishing;

[0106] (8) Ultrasonic cleaning of implant body 1 and abutment;

[0107] (9) Surface anodizing treatment;

[0108] (10) Test and obtain the finished product.

[0109] Example 2

[0110] The titanium-zirconium alloy occlusal dental implant includes an implant body 1 and a crown abutment 2, which are designed to be separate.

[0111] The implant body 1 is a hollow conical tube with threads on its surface. The wall thickness of the hollow cone is 1.5 mm, and the height is 20 mm. The outer diameter of the large-diameter end of the conical tube is 7 mm, and the outer diameter of the small-diameter end is 5 mm. Three grooves 3 are evenly distributed along the generatrix on the inner wall of the large-diameter end of the conical tube. The height of the grooves 3 is the same as the height of the frustum 6, and the grooves 3 are 4 mm high, 0.3 mm wide, and 0.5 mm deep. The small-diameter end of the conical tube is the contact and fixation end with the jawbone. Three through holes 4 are evenly distributed along the generatrix on the circumference of the small-diameter end of the conical tube. The height of the through holes 4 is 2 mm, and the width is 0.5 mm, forming three support legs 5.

[0112] The crown abutment 2 includes a frustum 6 and a cylinder 7 with a tubular structure. The bottom end of the cylinder 7 is fixedly connected to the center of the large-diameter end face of the frustum 6. The side wall of the frustum 6 is uniformly provided with three protruding ribs 8 along the generatrix direction. The two ends of the protruding ribs 8 extend to the two end faces of the frustum 6.

[0113] The side wall of the frustum 6 mates with the inner wall of the large-diameter end of the conical tube, the large-diameter end of the frustum 6 mates with the inner diameter of the large-diameter end of the conical tube, and the protruding ridge 8 mates with the groove 3.

[0114] Both the implant body 1 and the crown abutment 2 contain the following components by weight percentage: Zr 16.10%, Ag 0.30%, Ti balance; impurity control range: O < 0.12%, N < 0.002%, H < 0.001%, C < 0.008%, Fe < 0.05%.

[0115] Mechanical properties of processed materials

[0116] σb1050-1200MPa

[0117] σ0.2 990-1030MPa

[0118] δ18-22%

[0119] Ψ21-28%

[0120] Mechanical properties: tensile strength 990 MPa, elongation 18%.

[0121] A method for manufacturing titanium-zirconium alloy dental implants includes the following steps:

[0122] (1) Drawings for designing titanium-zirconium alloy dental implants;

[0123] (2) Digital modeling;

[0124] (3) Titanium alloy bars are manufactured according to their composition, and the manufacturing method is as follows:

[0125] (4) Laser cutting of titanium alloy rods;

[0126] (5) The implant body and crown abutment 2 are manufactured using a CNC machining center;

[0127] (6) Precision grinding is performed using a CNC grinding machine;

[0128] (7) Polishing;

[0129] (8) Ultrasonic cleaning of implant body 1 and abutment;

[0130] (9) Surface anodizing treatment;

[0131] (10) Test to obtain the finished product.

[0132] Example 3

[0133] The titanium-zirconium alloy second molar implant includes an implant body 1 and a crown abutment 2, which are designed to be separate.

[0134] The implant body 1 is a hollow conical tube with threads on its surface. The wall thickness of the hollow cone is 1.2 mm, and the height is 15 mm. The outer diameter of the large-diameter end of the conical tube is 6 mm, and the outer diameter of the small-diameter end is 4 mm. Three grooves 3 are evenly distributed along the generatrix on the inner wall of the large-diameter end of the conical tube. The height of the grooves 3 is the same as the height of the frustum 6, and the grooves 3 are 3 mm high, 0.2 mm wide, and 0.4 mm deep. The small-diameter end of the conical tube is the contact and fixation end with the jawbone. Three through holes 4 are evenly distributed along the generatrix on the circumference of the small-diameter end of the conical tube. The height of the through holes 4 is 1.5 mm, and the width is 0.4 mm, forming three support legs 5.

[0135] The crown abutment 2 includes a frustum 6 and a cylinder 7 with a tubular structure. The bottom end of the cylinder 7 is fixedly connected to the center of the large-diameter end face of the frustum 6. The side wall of the frustum 6 is uniformly provided with three protruding ribs 8 along the generatrix direction. The two ends of the protruding ribs 8 extend to the two end faces of the frustum 6.

[0136] The side wall of the frustum 6 mates with the inner wall of the large-diameter end of the conical tube, the large-diameter end of the frustum 6 mates with the inner diameter of the large-diameter end of the conical tube, and the protruding ridge 8 mates with the groove 3.

[0137] Both the implant body 1 and the crown abutment 2 contain the following components by weight percentage: Zr 16.30%, Ag 0.33%, Ti balance; impurity control range: O < 0.12%, N < 0.002%, H < 0.001%, C < 0.008%, Fe < 0.05%.

[0138] Mechanical properties of processed materials

[0139] σb1050-1200MPa

[0140] σ0.2 990-1030MPa

[0141] δ18-22%

[0142] Ψ21-28%

[0143] Mechanical properties: tensile strength 1020 MPa, elongation 19%.

[0144] A method for manufacturing titanium-zirconium alloy dental implants includes the following steps:

[0145] (1) Drawings for designing titanium-zirconium alloy dental implants;

[0146] (2) Digital modeling;

[0147] (3) Titanium alloy bars are manufactured according to their composition, and the manufacturing method is as follows:

[0148] (4) Laser cutting of titanium alloy rods;

[0149] (5) The implant body and crown abutment 2 are manufactured using a CNC machining center;

[0150] (6) Precision grinding is performed using a CNC grinding machine;

[0151] (7) Polishing;

[0152] (8) Ultrasonic cleaning of implant body 1 and abutment;

[0153] (9) Surface anodizing treatment;

[0154] (10) Test to obtain the finished product.

[0155] The description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A titanium-zirconium alloy dental implant, characterized in that, It includes an implant body and a crown abutment, wherein the implant body and the crown abutment are designed separately; The implant body is a hollow conical tube with threads on its surface. The inner wall of the large-diameter end of the conical tube has several grooves evenly arranged along the generatrix direction. The small-diameter end of the conical tube is the end that contacts and fixes the jawbone. Three through holes are evenly arranged along the generatrix direction on the circumference of the small-diameter end of the conical tube, forming three support legs. The crown abutment includes a frustum and a cylinder with a tubular structure. The bottom end of the cylinder is fixedly connected to the center of the large-diameter end face of the frustum. The sidewall of the frustum is uniformly provided with a number of protruding ridges along the generatrix direction. The two ends of the protruding ridges extend to the two end faces of the frustum. The sidewall of the frustum mates with the inner wall of the large-diameter end of the conical tube, the large-diameter end of the frustum mates with the inner diameter of the large-diameter end of the conical tube, and the protruding ridge mates with the groove. The height of the groove is the same as the height of the frustum, the height of the groove is 2-4mm, the width is 0.2-0.3mm, and the depth is 0.3-0.5mm; Both the implant body and the crown abutment comprise the following components by weight percentage: Zr 13.00-17.00%, Ag 0.30-0.45%, Ti balance; impurity control range: O < 0.12%, N < 0.002%, H < 0.001%, C < 0.008%, Fe < 0.05%; The outer wall diameter of the large-diameter end of the conical tube is 5-7mm, and the outer wall diameter of the small-diameter end of the conical tube is 3-5mm; The height of the through hole is 1-2 mm and the width is 0.3-0.5 mm.

2. The titanium-zirconium alloy dental implant according to claim 1, characterized in that, The hollow cone has a wall thickness of 1.0-1.5 mm and a height of 10-20 mm.

3. The titanium-zirconium alloy dental implant according to claim 1, characterized in that, The number of grooves is 3, and the number of protrusions is 3.

4. A method for manufacturing a titanium-zirconium alloy dental implant according to any one of claims 1-3, characterized in that, Includes the following steps: (1) Drawings for designing titanium-zirconium alloy dental implants; (2) Digital modeling; (3) Titanium alloy rods are manufactured according to the composition described in claim 1; (4) Laser cutting of titanium alloy rods; (5) The implant body and crown abutment are manufactured using a CNC machining center; (6) Precision grinding is performed using a CNC grinding machine; (7) Polishing; (8) Ultrasonic cleaning of the implant body and abutment; (9) Surface anodizing treatment; (10) Test and obtain the finished product.

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