Dental implant with concave hexagon

Abstract

The invention discloses a dental implant with a concave hexagon. The dental implant comprises a threaded part, the threaded portion includes a body, a thread, a weight reduction region, and a housing region. On the cross section in the axial direction of the body, the weight reduction area is formed by arranging a plurality of inwards-concave hexagonal unit cell elements in the axial direction of the body. And each concave hexagonal unit cell element comprises a horizontal rod, an inclined rod and a connecting rod. The horizontal rods are arranged in the axial direction of the body and are perpendicular to the axial direction of the body. Two of the four inclined rods are connected with one horizontal rod, the other two of the four inclined rods are connected with the other horizontal rod, one ends of the two connecting rods are connected with two intersection points of the inclined rods respectively, and the other ends of the two connecting rods are connected with the inner side of the shell area. Through the structural arrangement of the concave hexagonal unit cell elements, more space can be formed on the basis that the strength of the weight reduction area is not reduced, so that the weight of the dental implant can be reduced to the greatest extent.

Description

Technical Field

[0001] The invention relates to the technical field of dental implants, and in particular to a dental implant with a concave hexagon. Background Art

[0002] At present, the implant materials used in oral clinics mainly include metals and their alloys, and ceramic materials. Among them, titanium has become the most commonly used implant material due to its excellent bone bonding ability, biocompatibility and mechanical properties. However, titanium and titanium alloy implants have problems such as metal corrosion, ion release, allergic reactions and aesthetic defects, which limit their clinical application scope. Zirconia ceramic materials have excellent aesthetic properties, mechanical properties and biocompatibility, which can meet the demetallization requirements of clinical treatment. They have been used in restorations, orthodontic brackets, implant abutments and dental implants. However, as a brittle material, once subjected to impact loads, crack sources may be formed, which will cause rapid crack expansion and brittle fracture when stress concentration occurs. On the other hand, solid metal implants and solid zirconia implants have a stress shielding phenomenon at the bone-implant interface because their elastic modulus far exceeds that of bone tissue, which may cause aseptic loosening of the implant and bone loss, leading to implant failure.

[0003] The advantage of porous implants is that they reduce stress shielding effects and bone loss. At the same time, their pores provide more new bone colonization sites, guide bone tissue growth, and obtain better bone integration. The factors that affect bone integration of porous implants are mainly related to porosity, pore size, and pore distribution. In the past, some conventional pore-making methods, such as sintering of loose powder blanks and adding pore-forming agents, often failed to accurately control the pore size and distribution of the prepared pores, resulting in the growth of new bone tissue after implantation into the human body. The new bone tissue will grow into these pores, and the pore sizes of these pores are different, and the distribution of the pores is not stable, but the growth of bone tissue is basically consistent, which will cause the porous implant to tilt, and then lead to implant failure. At the same time, in traditional preparation methods, it is difficult to prepare complex structures using ceramics, so that strength and weight cannot be taken into account. Summary of the invention

[0004] In view of this, the present invention provides a method for quickly preparing a dental implant with a concave hexagon with high precision to solve the above technical problems.

[0005] A dental implant with a concave hexagon, comprising a threaded portion. The threaded portion comprises a body, a circle of threads arranged on the body, a weight-reducing area arranged inside the body, and a shell area arranged outside the weight-reducing area. In a cross section along the axial direction of the body, the weight-reducing area is formed by a plurality of concave hexagonal single cells arranged along the axial direction of the body. Each concave hexagonal single cell comprises two spaced horizontal bars, four oblique bars located between the two horizontal bars, and two connecting bars respectively connected at the intersection of the two oblique bars. The horizontal bars are arranged along the axial direction of the body, and the horizontal bars are perpendicular to the axial direction of the body. Two of the four oblique bars are connected to a horizontal bar, and the other two of the four oblique bars are connected to another horizontal bar, and the four oblique bars are connected in pairs and form a symmetrical structure with the line connecting the two intersections of the two oblique bars connected in pairs as the symmetry axis. The angle between the oblique bar and the horizontal bar is an acute angle. One end of the two connecting rods is respectively connected to the two intersection points of the oblique rods, and the other end is connected to the inner side of the shell area.

[0006] Furthermore, the main body is cylindrical, and its diameter is between 0.1 cm and 3 cm. The main body also has a plurality of through holes, which penetrate the shell area, and the aperture range is between 0.1 mm and 2 mm.

[0007] Furthermore, the radial thickness of the shell region is between one fifth and one eighth of the radial maximum diameter of the body.

[0008] Furthermore, the thread is spirally arranged on the body and is a trapezoidal thread. The through hole is arranged in the thread groove of the thread.

[0009] Furthermore, in two adjacent concave hexagonal unit cells, adjacent horizontal rods are arranged to overlap.

[0010] Furthermore, the weight reduction area forms a middle empty area and side empty areas symmetrically arranged on both sides of the middle area, the middle empty area is surrounded by the horizontal rods and the oblique rods, and the side empty areas are formed by the connecting rods, the oblique rods and the inner side of the shell area.

[0011] Furthermore, the length of the horizontal rod 21 is 0.1 mm≤h≤4 mm.

[0012] Furthermore, the length of the oblique edge 22 is 0.1 mm≤1≤4 mm.

[0013] Furthermore, an angle θ between the hypotenuse 22 and the horizontal rod 21 is 1°≤θ≤89.9°.

[0014] Furthermore, the wall thickness of the horizontal rod 21 and the oblique edge 22 is 0.1 mm≤t≤1 mm.

[0015] Compared with the prior art, the dental implant with a concave hexagon provided by the present invention is divided into the shell area and the weight-reducing area accommodated in the shell area by dividing the threaded portion. The weight-reducing area is formed by a plurality of concave hexagonal single cells arranged along the axial direction of the body. The horizontal rod is arranged along the axial direction of the body, and the horizontal rod is perpendicular to the axial direction of the body. Two of the four oblique rods are respectively connected and a symmetrical structure is formed with the line connecting the two intersections of the two-to-two oblique rods as the symmetry axis. The angle between the oblique rod and the horizontal rod is an acute angle. One end of the two connecting rods is respectively connected to the two intersections of the oblique rods, and the other end is connected to the inner side of the shell area. Through the structural setting of the concave hexagonal single cell, more space can be formed in the weight-reducing area without reducing its strength, thereby reducing the weight of the dental implant to the greatest extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The present invention provides a structural schematic diagram of a dental implant with a concave hexagon.

[0017] Figure 2 for Figure 1 Schematic cross-section of a dental implant with a concave hexagon.

[0018] Figure 3 for Figure 2 A partial enlarged schematic diagram of a dental implant with a concave hexagon at point A.

[0019] Figure 4 A schematic diagram of a concave hexagon. DETAILED DESCRIPTION

[0020] The specific embodiments of the present invention are further described in detail below. It should be understood that the description of the embodiments of the present invention herein is not intended to limit the protection scope of the present invention.

[0021] like Figures 1 to 3 As shown, it is a schematic diagram of the structure of a dental implant with a concave hexagon provided by the present invention. The dental implant with a concave hexagon includes a threaded portion 10, and a gingival portion 11 connected to the threaded portion 10. The dental implant also includes some other functional structures, such as a base arranged on the other end of the gingival portion 11 relative to the threaded portion 10, which is a technology well known to those skilled in the art and will not be repeated here. The entire dental implant can be formed by 3D printing of zirconia ceramics, specifically, it can be printed layer by layer along the axial direction of the dental implant. The functional structures such as the threaded portion 10, the gingival portion 11, and the base can be integrally formed through the 3D printing process, thereby reducing processing costs and reducing dental implant procedures.

[0022] The specific 3D printing process should be an existing technology and will not be described in detail here. The height of the entire dental implant is between 0.5 cm and 4 cm, and the specific actual height can be set according to actual needs.

[0023] The threaded portion 10 includes a body 101, a circle of threads 102 arranged on the body 101, a weight reduction area 103 arranged inside the body 101, and a shell area 104 arranged outside the weight reduction area 103. The body 101 is cylindrical, and its diameter is between 0.1cm and 3cm, and its size can be set according to actual needs. When in use, it is screwed into the gums of the oral cavity, so the thread 102 is arranged on the body 101. In order to make the body 101 fastened to the gums during use, the body 101 also has a plurality of through holes 105. The through hole 105 runs through the shell area 104, and its aperture range is between 0.1mm and 2mm. When the threaded portion 10 is screwed into the gums, it will grow into the through hole 105 during the growth of the gum tissue, so that the purpose of fastening can be achieved. The thread 102 is spirally arranged on the body 101, which can be a trapezoidal thread. At the same time, the through hole 105 is also arranged in the thread groove of the thread 102, and cannot be arranged on the thread, so as to ensure the strength of the thread. The shell area 104 has a certain thickness, and its thickness can be based on actual needs. In this embodiment, the radial thickness of the shell area 104 is between one-fifth and one-eighth of the radial maximum diameter of the body 101. In the cross section along the axial direction of the body 101, the weight reduction area 103 is formed by a plurality of concave hexagonal single cells 20 arranged along the axial direction of the body 101. In order to facilitate the illustration of the structure of the inner hexagonal concave, Figure 4A simplified drawing method of an inner hexagonal concave shape is shown. Each inner concave hexagonal unit cell 20 includes two spaced horizontal bars 21, four oblique bars 22 located between the two horizontal bars 21, and two connecting bars 23 respectively connected to the intersections of the two oblique bars 22. The horizontal bars 21 are arranged along the axial direction of the body 101, and the horizontal bars 21 are perpendicular to the axial direction of the body 101. In two adjacent inner concave hexagonal unit cells 20, adjacent horizontal bars 21 are arranged to overlap. Two of the four oblique bars 22 are connected to one horizontal bar 21, and the other two of the four oblique bars 22 are connected to another horizontal bar 21, and the four oblique bars 22 are connected in pairs and form a symmetrical structure with the line connecting the two intersections of the two oblique bars 22 connected in pairs as the symmetry axis. The angle between the oblique bars 22 and the horizontal bars 21 is an acute angle. One end of the two connecting bars 23 is respectively connected to the two intersections of the oblique bars 22, and the other end is connected to the inner side of the shell area 104. It is conceivable that each of the concave hexagonal unit cells 20 is integrally formed by 3D printing, and each of the concave hexagonal unit cells 20 and the shell area 104 are also integrally formed by 3D printing.

[0024] By setting the inwardly concave hexagonal unit cell 20, the weight reduction area 103 forms a middle hollow area 106 and side hollow areas 107 symmetrically arranged on both sides of the middle area 106. The middle hollow area 106 is surrounded by the horizontal rods 21 and the oblique rods 22, and the side hollow areas 107 are formed by the connecting rods 23, the oblique rods 22 and the inner side of the shell area 104.

[0025] The length h of the horizontal rod 21 is 0.1mm≤h≤4mm. If the length of the horizontal rod is less than 0.1mm, the mechanical properties of the implant will be poor, and if it is greater than 4mm, the biocompatibility of the implant will be poor. The length l of the hypotenuse 22 is 0.1mm≤l≤4mm. If the hypotenuse is less than 0.1mm, the mechanical properties of the implant will be poor, and if it is greater than 4mm, the biocompatibility of the implant will be poor. The angle θ between the hypotenuse 22 and the horizontal rod 21 is 1°≤θ≤89.9°. If the intersection angle is less than 1°, the implant will be sintered loosely, and if it is greater than 89.9°, the toughness of the implant will be poor. The wall thickness t of the horizontal rod 21 and the hypotenuse 22 is 0.1mm≤t≤1mm. If the wall thickness is less than 0.1mm, the mechanical properties of the implant will be poor, and if it is greater than 4mm, the biocompatibility of the implant will be poor.

[0026] The gingival portion 11 is provided with a blind hole, so the outer diameter of the gingival portion 11 can be set to 0.2 mm to 6 mm, and the inner diameter can be set to 0.1 mm to 5 mm.

[0027] Compared with the prior art, the dental implant with a concave hexagon provided by the present invention is divided into the shell area 104 and the weight reduction area 103 accommodated in the shell area 104 by the threaded portion 10. The weight reduction area 103 is formed by a plurality of concave hexagonal single cells 20 arranged along the axial direction of the body 101. The horizontal rod 21 is arranged along the axial direction of the body 101, and the horizontal rod 21 is perpendicular to the axial direction of the body 101. Two of the four oblique rods 22 are connected respectively and a symmetrical structure is formed with the line connecting the two intersections of the two oblique rods 22 connected in pairs as the symmetry axis. The angle between the oblique rod 22 and the horizontal rod 21 is an acute angle. One end of the two connecting rods 23 is connected to the two intersections of the oblique rod 22 respectively, and the other end is connected to the inner side of the shell area 104. Through the structural setting of the concave hexagonal single cell 20, the weight reduction area 103 can form more space without reducing its strength, thereby reducing the weight of the dental implant to the greatest extent.

[0028] The above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modification, equivalent substitution or improvement within the spirit of the present invention is included in the scope of the claims of the present invention.

Claims

1. A dental implant having a concave hexagon, characterized in that: The dental implant with a concave hexagon includes a threaded portion, which includes a body, a circle of threads arranged on the body, a weight-reducing area arranged inside the body, and a shell area arranged outside the weight-reducing area. In a cross section along the axial direction of the body, the weight-reducing area is formed by a plurality of concave hexagonal single cells arranged along the axial direction of the body. Each concave hexagonal single cell includes two spaced horizontal rods, four oblique rods located between the two horizontal rods, and two connecting rods respectively connected to the intersection points of the two oblique rods. The horizontal rods are arranged along the axial direction of the body, and the horizontal rods are perpendicular to the axial direction of the body. Two of the four oblique rods are connected to a horizontal rod, and the other two of the four oblique rods are connected to another horizontal rod. The four oblique rods are connected in pairs and form a symmetrical structure with the line connecting the two intersection points of the two oblique rods connected in pairs as the symmetry axis. The angle between the oblique rod and the horizontal rod is an acute angle. One end of the two connecting rods is respectively connected to the two intersection points of the oblique rods, and the other end is connected to the inner side of the shell area.

2. The dental implant with a concave hexagon as claimed in claim 1, characterized in that: The main body is cylindrical, and its diameter is between 0.1cm and 3cm. The main body is also provided with a plurality of through holes, which penetrate through the shell area, and the apertures thereof range from 0.1mm to 2mm.

3. The dental implant with a concave hexagon as claimed in claim 2, characterized in that: The radial thickness of the shell region is between one fifth and one eighth of the radial maximum diameter of the body.

4. The dental implant with a concave hexagonal shape according to claim 2, characterized in that: The thread spiral is arranged on the body and is a trapezoidal thread. The through hole is arranged in the thread groove of the thread.

5. The dental implant with a concave hexagon as claimed in claim 1, characterized in that: In two adjacent concave hexagonal unit cells, adjacent horizontal rods are arranged to overlap.

6. The dental implant with a concave hexagon as claimed in claim 1, characterized in that: The weight reduction area forms a middle empty area and side empty areas symmetrically arranged on both sides of the middle area. The middle empty area is surrounded by the horizontal rods and the oblique rods, and the side empty areas are formed by the connecting rods, the oblique rods and the inner side of the shell area.

7. The dental implant with a concave hexagon as claimed in claim 1, characterized in that: The length of the horizontal rod 21 is 0.1 mm≤h≤4 mm.

8. The dental implant with a concave hexagon as claimed in claim 1, characterized in that: The length of the oblique edge 22 is 0.1 mm≤1≤4 mm.

9. The dental implant with a concave hexagon as claimed in claim 1, characterized in that: The included angle θ between the hypotenuse 22 and the horizontal rod 21 is 1°≤θ≤89.9°.

10. The dental implant with a concave hexagon as claimed in claim 1, characterized in that: The wall thickness of the horizontal rod 21 and the oblique edge 22 is 0.1 mm≤t≤1 mm.

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