A porous tantalum dental implant with accelerated healing function and a preparation method thereof

Abstract

The present invention relates to the technical field related to dental implants, and discloses a porous tantalum dental implant with an accelerated healing function and a preparation method thereof, comprising: a tooth crown, a tooth base, and an implant base, wherein the implant base is provided with an external thread structure, the implant base is provided with a base counterbore, the base counterbore is provided with an internal thread structure for fastening, the base counterbore is provided with a guide oblique annular surface on the outer wall near the top, and the guide oblique annular surface array is provided with a drainage hole for outputting a liquid medicine; the porous tantalum dental implant with an accelerated healing function of the present invention has a functional component for facilitating healing and anti-inflammatory, which gradually penetrates outwards and downwards from a volume ring cavity through holes in an infiltration guide ring, and the outwardly infiltrated liquid medicine can be directly transported to the bones and flesh on the side of the tooth base through the honeycomb porous characteristics of the tooth base to achieve anti-inflammatory, analgesic and accelerated healing effects.

Description

Technical Field

[0001] The present invention belongs to the technical field related to dental implants, and more specifically, particularly relates to a porous tantalum dental implant with accelerated healing function and a preparation method thereof. Background Art

[0002] Oral problems have always been a major problem affecting human health and quality of life. With the continuous development of scientific fields such as oral medicine, dental implants have also come into being. Implant dentures are currently the preferred treatment option for edentulous teeth. It is a treatment method that replaces natural tooth roots with dental implants and repairs the upper crowns. It is highly comfortable, has high chewing recovery efficiency, and does not damage adjacent teeth.

[0003] The existing dental implant technology mainly involves preparing a base hole on the jawbone, then implanting a dental implant in the hole and installing a tooth base and a crown on the dental implant, thereby forming a complete dental implant to meet daily chewing needs;

[0004] Because the dental implant process involves frontal bone drilling and the need to embed the implant and tooth base, the healing and recovery of bones and nerves will directly affect the effect and recovery efficiency of implant dentures. However, the implant dentures used for edentulous teeth in the prior art still have the following defects:

[0005] In the prior art, implant dentures for edentulous teeth usually consist of three parts: an implant, a tooth base and a crown. The crown is mainly used for chewing and dentition supplementation after implantation, while the implant and the tooth base are embedded in the frontal bone and flesh after implantation. The currently disclosed prior art usually uses different materials to meet the affinity of the human body to achieve accelerated healing and stable implantation effects. For the implant and the tooth base after inlay, their structure is simple and can only be simply embedded. Moreover, due to the limitation of the embedding method, it is not convenient to administer drugs to the base hole and surrounding areas, resulting in slow healing and hidden dangers of inflammation. It is also impossible to ensure site healing and anti-inflammatory treatment by direct drug administration, which has many limitations on the healing efficiency and anti-inflammatory methods of dental implants.

[0006] Therefore, in view of this, the existing structure and defects are studied and improved, and a porous tantalum dental implant with accelerated healing function and a preparation method thereof are provided, in order to achieve a more practical purpose. Summary of the invention

[0007] The present invention provides a porous tantalum dental implant with accelerated healing function and a preparation method thereof, which are used to overcome the above-mentioned defects in the prior art.

[0008] The purpose and efficacy of the porous tantalum dental implant with accelerated healing function and the preparation method thereof of the present invention are achieved by the following specific technical means:

[0009] A porous tantalum dental implant with accelerated healing function and a preparation method thereof, comprising: a tooth crown, a tooth base, and an implant base, wherein the implant base is provided with an external thread structure, the implant base is provided with a base counterbore, the base counterbore is provided with an internal thread structure for fastening, the base counterbore is provided with a diversion oblique annular surface on the outer wall near the top, the diversion oblique annular surface array is provided with a drainage hole for outputting a liquid medicine, the bottom of the tooth base is provided with a lower docking structure and is fixedly installed on the top of the implant base, the tooth base is provided with a base through hole, the middle section of the base through hole is provided with an embedded annular groove, and the inner A permeation guide ring is embedded and fixed in the ring groove, an inner wall at the top position of the permeation guide ring is provided with an inclined drainage part, the annular array of the inclined drainage part is provided with drainage holes, a volume ring cavity for liquid medicine input and diversion is provided in the permeation guide ring, an upper docking structure is provided on the top of the tooth base and a crown is fixedly installed, a crown through hole is provided in the crown, a step structure is provided near the bottom of the crown through hole and a hollow annular bracket is installed, the crown through hole, the base through hole and the base countersunk hole are connected and penetrated and fixed by fasteners, and a hole cover for the healing period is provided on the top of the crown through hole.

[0010] According to a further technical solution, the tooth base is printed with tantalum metal and has a honeycomb-shaped porous truncated cone-shaped matrix, which facilitates penetration and integration with bone and flesh tissues.

[0011] According to a further technical solution, the inside of the permeation guide ring is provided with a uniformly distributed multi-directional through-hole feature, and the outer surface of the permeation guide ring is tightly fitted with the inner wall of the embedded annular groove.

[0012] A further technical solution is that the annular array on the bottom end face of the embedded annular groove is provided with a diversion channel for diversion, and the annular array on the top inner wall of the planting substrate is provided with a docking channel connected to the corresponding drainage holes, and the top of the docking channel is docked and connected with the corresponding diversion channel.

[0013] A further technical solution is that the lower docking structure includes a lower docking groove arranged at the bottom of the tooth base, the bottom hole of the diversion channel is arranged on the top inner wall of the lower docking groove, the top of the implant base is provided with a base docking platform, the base docking platform is embedded and fixed in the lower docking groove, and the top hole of the docking channel is arranged on the top end face of the base docking platform.

[0014] According to a further technical solution, the upper docking structure comprises an upper docking boss arranged on the top end surface of the tooth base, and an upper docking groove is arranged at the bottom of the tooth crown, and the upper docking boss is embedded in the upper docking groove.

[0015] According to a further technical solution, a sealing plug is fixedly installed at the bottom of the hole cover, the sealing plug is embedded in the top of the crown through hole, and a damping ring is provided on the outer wall of the sealing plug.

[0016] According to a further technical solution, the bottom of the implant base has a smooth plane feature, which can avoid damaging the bottom of the tooth base hole during the implant surgery. The external thread of the implant base adopts a 7.3-degree tapered thread.

[0017] According to a further technical solution, the fastener is a fastening stud, the diameter of the top end block of the fastening stud is smaller than the crown through hole, the lower end surface of the top end block of the fastening stud abuts against the top of the hollow annular bracket, and the bottom of the fastening stud is fastened to the inner thread of the base countersunk hole.

[0018] The present invention also includes a method for preparing a porous tantalum dental implant with an accelerated healing function, comprising the following steps:

[0019] S1: Purify and screen the tantalum metal powder, and use tantalum metal powder with a particle size range of 15-60 μm;

[0020] S2: After the tantalum metal powder and the binder are evenly mixed, they are introduced into the silo of a high-precision 3D printer, and the three-dimensional model data is input into the 3D printer, and the crown, tooth base, hollow ring bracket, implant matrix, and infiltration guide ring are processed by 3D printing respectively;

[0021] S3: Surface and adjustment processing of the crown, tooth base, hollow ring bracket, implant matrix, and infiltration guide ring embryo obtained by 3D printing;

[0022] S4: Perform high-temperature vacuum qualitative treatment on the processed crown, tooth base, hollow ring bracket, implant matrix, and infiltration guide ring.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The porous tantalum dental implant with accelerated healing function of the present invention has functional components that facilitate healing and anti-inflammatory. In the prior art, implant dentures for edentulous teeth usually consist of three parts: an implant, a tooth base and a crown. The crown is mainly used for chewing and edentulous supplementation after implantation, while the implant and the tooth base are embedded in the frontal bone and flesh after implantation. The currently disclosed prior art usually uses different materials to meet the affinity of the human body to achieve accelerated healing and stable implantation effects. For the implant and the tooth base after inlay, the structure is simple and can only achieve simple embedding. Moreover, due to the limitation of the embedding method, it is not convenient to administer drugs to the base hole and the surrounding parts, so there are problems of slow healing and hidden dangers of inflammation, and it is impossible to ensure site healing and anti-inflammatory treatment by direct drug administration, so there are many limitations on the healing efficiency and anti-inflammatory methods of dental implants. In the present invention, after the implantation is completed, the doctor installs the crown and the tooth base components in place and tightens them with fastening studs. In the subsequent healing and wound healing stages, the hole cover can be removed by using sterilized medical tweezers, and drugs can be input into the crown through hole through a catheter, a syringe or other applicator. The input drugs are not limited to anti-inflammatory, analgesic, healing liquid, etc. Through the input of the liquid medicine, the hollow annular bracket is guided downward to the top cavity of the infiltration guide ring, and the inclined drainage part is used to carry out the diversion and allow the liquid medicine to enter the volume ring cavity through the drainage hole, and gradually penetrate outward and downward from the volume ring cavity through the holes in the infiltration guide ring. The outwardly infiltrated liquid medicine can be directly transported to the bones and flesh on the side of the tooth base through the honeycomb porous characteristics of the tooth base to achieve anti-inflammatory, analgesic and accelerated healing effects. At the same time, the liquid medicine that penetrates downward is finally output from the drainage hole through the diversion channel and the docking channel, and is gradually guided to the inner wall of the base hole in cooperation with the external thread of the implant base to form a liquid medicine supply function, thereby facilitating drug administration and anti-inflammatory and accelerated healing treatment effects after dental implantation. At the same time, after the healing stage is completed, the doctor replaces the hole cover with a fixed permanent cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall front view structure of the present invention.

[0026] Figure 2 It is a cross-sectional structural schematic diagram of the present invention.

[0027] Figure 3 It is a schematic diagram of the overall structure of the dental crown in the present invention.

[0028] Figure 4 It is a schematic diagram of the overall structure of the planting matrix in the present invention.

[0029] Figure 5 It is a schematic diagram of the cross-sectional structure of the dental crown in the present invention.

[0030] Figure 6 It is a schematic cross-sectional structure diagram of the tooth base in the present invention.

[0031] Figure 7 It is a schematic diagram of the cross-sectional structure of the permeation guide ring in the present invention.

[0032] Figure 8 It is a schematic diagram of the top view of the structure of the seepage guide ring in the present invention.

[0033] Fig. 9 It is a schematic diagram of the cross-sectional structure of the planting matrix in the present invention.

[0034] Explanation of the accompanying drawings: crown 10, crown through hole 11, sealing plug 12, damping ring 13, hole cover 14, tooth base 15, hollow annular bracket 16, upper docking groove 17, upper docking boss 18, embedded annular groove 19, implant base 20, base through hole 21, base countersunk hole 22, lower docking groove 23, base docking platform 24, fastening stud 25, diversion channel 26, infiltration diversion ring 30, inclined drainage part 31, drainage hole 32, volume ring cavity 33, docking channel 36, diversion oblique annular surface 37, drainage hole 38. DETAILED DESCRIPTION

[0035] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0036] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] Example:

[0039] As attached Figure 1 To Attachment Fig. 9 As shown:

[0040] The invention provides a porous tantalum dental implant with a healing acceleration function and a preparation method thereof.

[0041] Refer to the attached Figure 1 To Attachment Fig. 9 , including: a crown 10, a tooth base 15, and an implant base 20, wherein the implant base 20 is provided with an external thread structure, the implant base 20 is provided with a base countersunk hole 22, and the base countersunk hole 22 is provided with an internal thread structure for fastening, and the outer wall of the base countersunk hole 22 near the top is provided with a diversion oblique annular surface 37, and the diversion oblique annular surface 37 array is provided with a drainage hole 38 for outputting liquid medicine, the bottom of the tooth base 15 is provided with a lower docking structure and is fixedly installed on the top of the implant base 20, the tooth base 15 is provided with a base through hole 21, and the middle section of the base through hole 21 is provided with an embedded annular groove 19, and the embedded annular groove 19 is embedded and fixedly installed with a seepage A permeable guide ring 30 is provided, and an inclined drainage part 31 is provided on the inner wall at the top position of the permeation guide ring 30. The inclined drainage part 31 is provided with drainage holes 32 in an annular array. A volume ring cavity 33 for liquid medicine input and diversion is provided in the permeation guide ring 30. An upper docking structure is provided on the top of the tooth base 15 and a crown 10 is fixedly installed. A crown through hole 11 is provided in the crown 10. A step structure is provided near the bottom of the crown through hole 11 and a hollow annular bracket 16 is installed. The crown through hole 11, the base through hole 21, and the base countersunk hole 22 are connected and connected and fixed through fasteners. A hole cover 14 for the healing period is provided on the top of the crown through hole 11.

[0042] Preferably, the tooth base 15 is printed with tantalum metal and has a honeycomb porous truncated cone-shaped matrix, which is convenient for penetration and bonding with bone and flesh tissues.

[0043] Preferably, the inside of the permeation guide ring 30 is provided with uniformly distributed multi-directional through-hole features, and the outer surface of the permeation guide ring 30 is tightly fitted with the inner wall of the embedded annular groove 19.

[0044] Preferably, the bottom end face annular array of the embedded annular groove 19 is provided with a diversion channel 26 for diversion, and the top inner wall annular array of the planting base 20 is provided with a docking channel 36 connected to the corresponding drainage hole 38, and the top of the docking channel 36 is docked and connected with the corresponding diversion channel 26.

[0045] Preferably, the lower docking structure includes a lower docking groove 23 arranged at the bottom of the tooth base 15, the bottom hole position of the diversion channel 26 is arranged on the top inner wall of the lower docking groove 23, and a base docking platform 24 is provided on the top of the implant base 20. The base docking platform 24 is embedded and fixed in the lower docking groove 23, and the top hole position of the docking channel 36 is arranged on the top end surface of the base docking platform 24.

[0046] Preferably, the upper docking structure includes an upper docking boss 18 arranged on the top end surface of the tooth base 15, and an upper docking groove 17 is provided at the bottom of the tooth crown 10, and the upper docking boss 18 is embedded in the upper docking groove 17.

[0047] Preferably, a sealing plug 12 is fixedly installed at the bottom of the hole cover 14 , the sealing plug 12 is embedded in the top of the crown through hole 11 , and a damping ring 13 is provided on the outer wall of the sealing plug 12 .

[0048] Preferably, the bottom of the implant base 20 has a smooth plane feature, which can avoid damaging the bottom of the tooth base hole during the implant surgery. The external thread of the implant base 20 adopts a 7.3-degree tapered thread.

[0049] Preferably, the fastener is a fastening stud 25, the top end block diameter of the fastening stud 25 is smaller than the crown through hole 11, the lower end surface of the top end block of the fastening stud 25 abuts against the top of the hollow annular bracket 16, and the bottom of the fastening stud 25 is fastened to the internal thread of the base countersunk hole 22.

[0050] The present invention also includes a method for preparing a porous tantalum dental implant with an accelerated healing function, comprising the following steps:

[0051] S1: Purify and screen the tantalum metal powder, and use tantalum metal powder with a particle size range of 15-60 μm;

[0052] S2: After the tantalum metal powder and the binder are evenly mixed, they are introduced into a high-precision 3D printer silo, and the three-dimensional model data is input into the 3D printer, and the crown 10, the tooth base 15, the hollow annular bracket 16, the implant matrix 20, and the infiltration guide ring 30 are respectively processed by 3D printing;

[0053] S3: performing surface and adjustment processing on the dental crown 10, the dental base 15, the hollow annular bracket 16, the implant base 20, and the infiltration guide ring 30 embryos obtained by 3D printing;

[0054] S4: performing high-temperature vacuum qualitative treatment on the processed tooth crown 10, tooth base 15, hollow annular bracket 16, implant matrix 20, and infiltration guide ring 30;

[0055] Preferably, the high-temperature vacuum qualitative treatment uses a vacuum sintering processor, and the temperature is set at 1100-1500° C., and the heat treatment time is 120-180 minutes.

[0056] Preferably, the binder is a polyethylene glycol aqueous solution.

[0057] Specific use of the present invention:

[0058] In the dental implantation process, a positioning drill is used to locate and open a hole at the frontal bone position, and then a hole reaming drill is used to expand the positioning base hole step by step, and a neck forming process is performed, and then a tapping drill is used to perform thread forming in the processed hole. After the processing is completed, the implant base 20 is rotated and installed in the tooth base hole through a carrier, and the gums are sutured to complete the implant placement operation;

[0059] A porous tantalum dental implant with an accelerated healing function in the present invention has functional components that facilitate healing and anti-inflammatory. In the prior art, implant dentures for edentulous teeth usually consist of three parts: an implant, a tooth base, and a crown. The crown is mainly used for chewing and edentulous supplementation after implantation, while the implant and the tooth base are embedded in the frontal bone and flesh after implantation. The currently disclosed prior art usually uses different materials to meet the affinity of the human body to achieve accelerated healing and stable implantation effects. For the implant and the tooth base after inlay, the structure is simple and can only achieve simple embedding. Moreover, due to the limitation of the embedding method, it is not convenient to administer drugs to the base hole and the surrounding area, resulting in slow healing and hidden dangers of inflammation. Moreover, it is impossible to ensure site healing and anti-inflammatory treatment by direct drug administration, thereby there are many limitations on the healing efficiency and anti-inflammatory method of dental implants. In the present invention, after the implantation is completed, the doctor installs the crown 10 and the tooth base 15 components in place and fastens them with the fastening studs 25. In the subsequent healing and wound healing stages In the process, the hole cover 14 can be removed by using sterilized medical tweezers, and drugs can be input into the crown through hole 11 through a catheter, a syringe or other applicator. The input drugs are not limited to anti-inflammatory, analgesic, healing drugs, etc. Through the input of the drug solution, the hollow annular bracket 16 guides the drug solution downward to the top cavity of the infiltration guide ring 30, and the inclined drainage part 31 is used to carry out the diversion and allow the drug solution to enter the volume ring cavity 33 through the drainage hole 32, and gradually penetrate outward and downward from the volume ring cavity 33 through the holes in the infiltration guide ring 30, and penetrate outward. The liquid medicine can be directly delivered to the bones and flesh on the side of the tooth base through the honeycomb porous characteristics of the tooth base 15 to achieve anti-inflammatory, analgesic and accelerated healing effects. At the same time, the liquid medicine that penetrates downward is finally output from the drainage hole 38 through the diversion channel 26 and the docking channel 36, and cooperates with the external thread of the implant base 20 to gradually guide the inner wall of the base hole to form a liquid medicine supply function, thereby facilitating drug administration and anti-inflammatory and accelerated healing treatment effects after dental implantation. At the same time, after the healing stage is completed, the doctor replaces the hole cover 14 with a fixed permanent cover.

[0060] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A porous tantalum dental implant with accelerated healing function, comprising a crown, a tooth base, and an implant base, characterized in that: The implant base is provided with an external thread structure outside, a base countersunk hole is provided inside the implant base, an internal thread structure for fastening is provided inside the base countersunk hole, a guide oblique annular surface is provided on the outer wall of the base countersunk hole near the top, the guide oblique annular surface array is provided with a drainage hole for outputting liquid medicine, a lower docking structure is provided at the bottom of the tooth base and is fixedly installed on the top of the implant base, a base through hole is provided inside the tooth base, an embedded annular groove is provided at the middle section of the base through hole, an infiltration guide ring is embedded and fixedly installed in the embedded annular groove, an inclined drainage part is provided on the inner side wall at the top position of the infiltration guide ring, the annular array of the inclined drainage part is provided with drainage holes, a volume ring cavity for liquid medicine input and diversion is provided inside the infiltration guide ring, an upper docking structure is provided at the top of the tooth base and a crown is fixedly installed, the A crown through hole is provided in the crown, and a step structure is provided near the bottom of the crown through hole and a hollow annular bracket is installed. The crown through hole, the base through hole and the substrate countersunk hole are butt-connected and fixed through fasteners. A hole cover for the healing period is provided on the top of the crown through hole. The tooth base is a truncated cone-shaped substrate printed with tantalum metal and has a honeycomb porous structure, which is convenient for penetration and combination with bone and flesh tissue. A uniformly distributed multi-directional through hole feature is provided inside the infiltration guide ring. The outer surface of the infiltration guide ring is tightly fitted with the inner wall of the embedded annular groove. The annular array on the bottom end face of the embedded annular groove is provided with a diversion channel for diversion. The annular array on the top inner wall of the implant substrate is provided with a docking channel connected with the corresponding drainage hole, and the top of the docking channel is butt-connected with the corresponding diversion channel.

2. The porous tantalum dental implant with accelerated healing function according to claim 1, characterized in that: The lower docking structure includes a lower docking groove arranged at the bottom of the tooth base, the bottom hole position of the diversion channel is arranged on the top inner wall of the lower docking groove, the top of the implant base is provided with a base docking platform, the base docking platform is embedded and fixed in the lower docking groove, and the top hole position of the docking channel is arranged on the top end surface of the base docking platform.

3. The porous tantalum dental implant with accelerated healing function according to claim 1, characterized in that: The upper docking structure comprises an upper docking boss arranged on the top end surface of the tooth base, and an upper docking groove is arranged at the bottom of the tooth crown, and the upper docking boss is embedded in the upper docking groove.

4. The porous tantalum dental implant with accelerated healing function according to claim 1, characterized in that: A sealing plug is fixedly installed at the bottom of the hole cover, and the sealing plug is embedded in the top of the crown through hole. A damping ring is provided on the outer wall of the sealing plug.

5. The porous tantalum dental implant with accelerated healing function according to claim 1, characterized in that: The bottom of the implant base has a smooth plane feature, which can avoid damaging the bottom of the tooth base hole during the implant surgery. The external thread of the implant base adopts a 7.3-degree tapered thread.

6. The porous tantalum dental implant with accelerated healing function according to claim 1, characterized in that: The fastener is a fastening stud, the diameter of the top end block of the fastening stud is smaller than the crown through hole, the lower end surface of the top end block of the fastening stud abuts against the top of the hollow annular bracket, and the bottom of the fastening stud is fastened with the inner thread of the base countersunk hole.

7. A method for preparing a porous tantalum dental implant with accelerated healing function, applied to the porous tantalum dental implant with accelerated healing function as claimed in any one of claims 1 to 6, comprising the following steps: S1: Purify and screen the tantalum metal powder, and use tantalum metal powder with a particle size range of 15-60μm; S2: Mix the tantalum metal powder and the binder evenly, introduce them into the high-precision 3D printer silo, input the three-dimensional model data into the 3D printer, and use 3D printing to process and obtain the crown, tooth base, hollow ring bracket, implant matrix, and infiltration guide ring respectively; S3: Perform surface and adjustment processing on the crown, tooth base, hollow ring bracket, implant matrix, and infiltration guide ring embryo obtained by 3D printing; S4: Perform high-temperature vacuum qualitative treatment on the processed crown, tooth base, hollow ring bracket, implant matrix, and infiltration guide ring.

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