An implant with branched roots

Abstract

The application discloses a kind of implants with branch root, it is divided into two parts, upper part is the healing abutment of interface with gum, lower part is the implant retention nail implanted in alveolar bone, including hollow sleeve structure of implant, the bottom of implant is at least provided respectively to left, right side inclined through hole, screw is inserted and fixed in through hole, and is inclined and tied into human alveolar bone.The application, by the above-mentioned setting of implant, to realize the combination of implant and alveolar bone, the occlusal force of implant tooth is borne by implant and its inclined hole screw, so that the crown can withstand larger occlusal force when biting food, long service life, stable and durable;And significantly shorten the length of implant, greatly expand the scope of application.

Description

Technical Field

[0001] The present invention relates to the technical field of artificial tooth implantation, in particular to an implant with branched roots. Background Art

[0002] With the development and refinement of osseointegration theory and decades of clinical practice, dental implants have become a key restoration technology for missing teeth. Compared with traditional removable and fixed dentures, dental implants offer advantages such as aesthetics, increased comfort, and enhanced chewing function. Among the many dental implant failures, loosening of the connection between the implant and the abutment is a common phenomenon. Therefore, preventing loosening of the implant-abutment connection has become a key technical issue to further improve the long-term success rate of dental implants.

[0003] During chewing, the crown, as a tooth replacement, is subjected to cyclical alternating loads of varying magnitude, direction, and type. This actually results in minute relative displacements, with the amplitude of these movements falling within the range of micromotions defined in tribology. Damage caused by these micromotions can lead to material loss on the implant's contact and connection surfaces, resulting in loosening of the abutment and significantly reducing the implant's fatigue life.

[0004] The inventor's previous research shows that fretting damage is an important factor leading to mechanical failure of the abutment; and the tangential fretting damage of the connection surface and the contact surface is the most serious, while the radial and combined fretting damage is relatively mild.

[0005] Dental implants have significant advantages over other types of dentures and are becoming increasingly popular. However, existing dental implants, consisting of a porcelain crown, a healing abutment, and an implant retaining pin, have the following disadvantages:

[0006] 1. Since the fixed connection between the two is achieved only by the lower part of the implant penetrating into the alveolar bone, the implant must be long enough to withstand the chewing force. Therefore, it cannot be used by patients with thin alveolar bones at the upper front teeth or patients who are close to the nasal floor.

[0007] 2. Implants can easily cause surrounding bone absorption, causing the implant to loosen and lead to implant failure.

[0008] 3. The implant is perpendicular to the alveolar bone, resulting in axial misalignment with some crowns, forcing the upper half of the implant to be very short, affecting the fixation and stability of the crown.

[0009] In view of this, the present invention is proposed. Summary of the Invention

[0010] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide an implant with branched roots, the purpose of which is to achieve a firm and reliable combination of the implant and the alveolar bone.

[0011] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0012] An implant with branched roots is divided into two parts. The upper part is a healing base connected to the gums, and the lower part is implanted in the alveolar bone. The implant is a hollow sleeve structure. The bottom of the implant is provided with at least through holes inclined to the left and right respectively. Screws for fixing the implant are inserted into the through holes and obliquely penetrate into the human alveolar bone.

[0013] Furthermore, the implant through hole gradually deviates from top to bottom toward the outside of the implant, and the distance between the two through holes gradually increases from top to bottom, forming an outward-facing "X" shape.

[0014] Furthermore, the implant screw at least extends to the outside of the through hole, the portion of the screw extending outside the through hole is provided with a thread, and a pointed cone-shaped nail head is provided at the bottom of the screw, which can be easily inserted into the alveolar bone of the human body.

[0015] Furthermore, a blind hole that cooperates with a drilling head is provided on the nut of the screw; the screw is drilled into the through hole of the implant through the drill bit structure; the drill bit structure includes an active rod and a driven rod with an inclined angle to each other, the input end of the driven rod is connected to the motor, and the output end is transmission-connected to the input end of the driven rod, and the output end of the driven rod is provided with a cone head that is plugged into the blind hole of the screw; the active rod is coaxially arranged with the implant, and the driven rod is coaxially arranged with the screw.

[0016] Furthermore, the implant is a vertically extending column with a hollow interior and an opening at the top. The top of the implant is provided with a base for fixing the crown, and the bottom of the implant is provided with a surface thread.

[0017] Furthermore, an inner wall of the through hole is provided with an internal thread, and the screw is threadably engaged with the through hole.

[0018] Furthermore, the bottom end of the implant is configured as a tapered flat bottom end surface whose area gradually decreases from top to bottom, and the through hole is provided on the tapered flat bottom end surface. The bottom end has a large stress-bearing area, which is beneficial to uniform stress on the bottom of the implant.

[0019] Furthermore, the base is vertically protruding upward, and the interior of the base is hollow, so the porcelain crown can be embedded in the base.

[0020] Furthermore, openings are respectively provided at the top and bottom ends of the base, the openings are opposite to the hollow portion inside the base and are the same as the implant openings.

[0021] Furthermore, the widths of the hollow parts of the base of the implant and the hollow parts of the implant are both greater than a first set value, which is required to ensure that the screw can pass through and facilitate the drill hole to cooperate with the screw and penetrate into the alveolar bone.

[0022] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

[0023] 1. The screw passes through the hollow implant and through the hole at the bottom of the implant into the human alveolar bone, making the implant installation more stable and preventing the implant from loosening. The screw set on the implant is tilted to the left and right, which facilitates the distribution of the occlusal force to the left and right gums of the implant during use after installation, making the force more even and thus extending the service life of the dental implant.

[0024] 2. The crown can be embedded into the mounting table to facilitate the installation of the crown.

[0025] 3. The lower end of the implant is designed as a conical flat-bottomed end face with a gradually decreasing area from top to bottom. This structure has a large stress-bearing area, which is conducive to uniform stress on the bottom of the implant. The upper end of the implant is a healing base connected to the gum. When the porcelain crown is damaged, the crown can be removed separately to avoid the pain and trouble caused by re-implanting the implant.

[0026] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an undue limitation of the present invention. Obviously, the drawings described below are only some embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without inventive effort. In the accompanying drawings:

[0028] Figure 1 1 is a schematic structural diagram of an implant with branched roots according to an embodiment of the present invention;

[0029] Figure 2 This is a schematic structural diagram of an implant with branched roots without screws according to an embodiment of the present invention;

[0030] Figure 3 This is a left side view of an implant with branched roots according to an embodiment of the present invention with the screw removed;

[0031] Figure 4 This is a schematic diagram of a left side view of an implant with branched roots according to an embodiment of the present invention;

[0032] Figure 5 is a top view of an implant with branched roots according to an embodiment of the present invention;

[0033] Figure 6It is a structural schematic diagram of a screw installation of an implant with branched roots described in an embodiment of the present invention.

[0034] Explanation of the numbers in the accompanying drawings: 1. Explanation of the numbers in the accompanying drawings: 1. Implant, 2. Through hole, 3. Thread, 4. Screw, 5. End surface of tapered flat bottom, 6. Abutment, 7. Motor, 8. Sleeve, 9. Active rod, 10. Driven rod.

[0035] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0037] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They 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 direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0038] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0039] An embodiment of the present invention introduces an implant with branched roots, which is installed on the alveolar bone. The implant is first installed and then fixed to the alveolar bone by passing screws to make the implant more secure. Then, a porcelain crown is installed on the upper base of the implant to actually implant the tooth.

[0040] like Figures 1 to 5As shown, the present invention discloses an implant with branched roots, which includes an implant 1. The implant 1 is a hollow sleeve structure. A thread 3 is provided on the outer side of the lower end of the implant 1. At least two through holes 2 are provided at the bottom of the implant 1. The through holes 2 are arranged obliquely downward. Screws 4 are inserted into the through holes 2. The screws 4 engage with the internal threads of the through holes 2 to make the implant 1 more firmly in the alveolar bone. The bottom of the implant 1 is a conical flat-bottomed end surface 5, and the upper end of the implant 1 is a base 6 to achieve the corresponding installation of a porcelain crown.

[0041] like Figures 1 to 5 As shown, the implant 1 described in this embodiment is implanted into the alveolar bone with a hole prepared by a special high-speed and low-speed drill. The implant 1 is divided into two parts, the upper part is a healing base 6 connected to the gum, and the lower part is implanted in the alveolar bone. The implant 1 is a hollow sleeve structure, which is convenient for placing the screw 4 into the bottom of the implant 1. The bottom of the implant 1 is provided with at least through holes 2 inclined to the left and right respectively. The outer side of the implant 1 is a thread 3. The thread 3 can greatly increase the contact area with the bone and can disperse the force, so that the implant 1 can have good initial stability when implanted in the bone, so as to facilitate bone growth and bone integration, and avoid the situation where the gum is affected by external forces and the porcelain crown falls off. At the same time, the implant 1 can cooperate with the positioning bone channel on the alveolar bone, and then can play the purpose of initial positioning for the implant 1, making installation convenient.

[0042] The bottom of the implant 1 is a conical flat-bottomed end face 5, and the cross-section of the conical end face gradually decreases. This structure has a large force-bearing area, which is conducive to uniform force at the bottom of the implant 1, making the implant 1 stable, reducing the amount of bone loss at the gums, and being able to preserve existing bone tissue, reduce unnecessary bone loss and avoid the occurrence of bone perforation.

[0043] The screw 4 is placed through the hollow part to reach the bottom of the implant 1, and passes through the left and right symmetrical through holes 2 at the bottom. The opening direction of the through hole 2 is inclined downward, and is at an angle of 45 degrees to the vertical direction of the implant 1 as much as possible. Since the left and right through holes 2 are inclined in opposite directions, the lower end of the exposed part of the screw 4 passing through the through hole 2 is set in an outward-facing "X" shape, and a blind hole that cooperates with the drilling head is provided on the nut of the screw 4. Through the through hole 2, a bone channel for the screw 4 to be inserted is opened on the alveolar bone, and the screw 4 can make the implant 1 more secure.

[0044] A better way of opening the hole in this embodiment is to open the hole in the direction of the alveolar bone on both sides of the implant 1. It does not have to be symmetrical and always keeps the hole tilted downward. This can meet the needs of implanting implants 1 in different positions and allow the implant 1 to better adapt to the environment around the alveolar bone.

[0045] The implant 1 of this embodiment also comprises a fastening structure comprising threads 3 on the outside of its lower end and a screw 4 embedded in the through hole 2 of the implant 1. This fastening structure strengthens the implant 1's bond with bone tissue and enhances osseointegration, resulting in a more effective implant 1 and a stronger fixation within the alveolar bone. The through hole 2 has internal threads, and the width of the screw 4 is tailored to the aperture. The threads extend from the bottom of the nut to the screw head, ensuring that the screw 4 engages the internal threads of the through hole 2. This provides a more secure fastening structure and is the optimal solution.

[0046] Another approach to this embodiment is to not have internal threads on the through hole 2. The hole diameter should be the same as that of the screw 4 to ensure that the screw 4 does not loosen after passing through the through hole 2. The portion of the screw 4 that extends outside the through hole 2 is threaded, and the bottom of the screw 4 is provided with a pointed cone-shaped head. This is the preferred head and facilitates the screw 4 to penetrate the alveolar bone. Alternatively, a round-headed screw can be used. The inner portion of the screw 4 that passes through the through hole 2 is not threaded, which also ensures that the fastening structure does not loosen in the alveolar bone. The screw 4 should extend at least to the outside of the through hole 2, avoiding being too long, which would be inconvenient to operate. This ensures that the exposed portion of the screw head accounts for one-third of the total screw length, thus ensuring a secure fastening structure for the implant 1. Alternatively, the upper half of the screw 4, where it engages the internal threads of the through hole 2, can be threaded, while the lower half, where it protrudes from the through hole 2, can be smooth. This also prevents further damage to soft tissue caused by the portion of the screw 4 that protrudes from the through hole 2 when it penetrates the alveolar bone.

[0047] In this embodiment, the edges of the implant 1, the base 6 and the tapered flat-bottom end face 5 are all cylindrical, replacing sharp edges, which can improve the comfort of the implanted prosthesis and avoid wear on the alveolar bone.

[0048] The present invention can produce finished abutments 6 and implants 1 in various sizes and specifications based on the shape of the alveolar bone at different locations. For a specific patient, the location of missing teeth is first determined, and the finished product is selected to determine the curvature. The gingiva can be slightly bent to expose the alveolar bone. The curvature and length of the abutment 6 are then compared, and an electric drill is used to drill an appropriate shape and size of the implant 1 into the alveolar bone. The implant 1 and abutment 6 are then inserted. Screws 4 are screwed into the alveolar bone to a depth appropriate for the implant 1. The implant 1 is screwed in, the gingival incision is sutured, and a removable porcelain crown can be inserted after the gingival incision has healed.

[0049] In this embodiment, the upper and lower ends of the implant 1 have a certain axial angle, which can adapt to the fixation of crowns in different positions and different axial directions, so that the crowns conform to the original characteristics and can facilitate more unknown installations.

[0050] Openings are provided at the top and bottom ends of the abutment 6, respectively, so that the screw 4 can conveniently pass through the abutment 6 and the implant 1 to reach the bottom. The opening is opposite to the hollow part inside the abutment 6, and the minimum size of the opening cannot be less than the length of the screw. The abutment 6 has a vertical upward protrusion extending from its radially outward surface, and the protrusion can engage with the implant 1 accordingly. It is particularly preferred that this surface of the abutment 6 is at least partially cylindrical, which facilitates the installation and removal of the porcelain crown. The size of the surface is limited, and the upper and lower end faces of the abutment 6 are respectively opened, and the size of the opening is consistent with the hollow part of the implant 1. The abutment 6 includes an exposed contour with a definite structure: the cylindrical section of the abutment 6 exposed from the dental implant 1 is adjacent to the upper part of the implant 1, followed by an area that is concave when viewed from a cross section through the axis of the abutment.

[0051] The widths of the hollow parts of the base 6 and the implant 1 are both greater than a first set value, which is at least required to allow the screw 4 to be placed at the bottom of the implant 1 and facilitate the cooperation between the drill bit and the screw 4 .

[0052] like Figure 6 As shown, in the present application, when the implant is installed with a screw, the drill bit structure used includes a sleeve 8, the axes of the two ends of the sleeve 8 have a certain angle, an active rod 9 is inserted at one end of the sleeve 8, and a driven rod 10 is inserted at the other end, and the insertion ends of the active rod 9 and the driven rod 10 are threadedly engaged with each other, and the end of the active rod 9 outside the sleeve is connected to the motor 7, so that the active rod 9 can rotate around the axis under the driving action of the motor, and the power is transmitted to the driven rod 10 through the threaded engagement connection between the active rod 9 and the driven rod 10, driving the driven rod 10 to rotate around the axis; at the same time, the driven rod 10 is provided with a cone head at the end outside the sleeve 8, and the cone head is plugged into the blind hole at the end of the screw 4 to rotate the screw 4 and realize the threaded engagement and extension of the screw 4.

[0053] Preferably, the axis of the active rod 9 of the drill bit is coaxially arranged with the axis of the implant 1 , and the axis of the driven rod 10 is coaxially arranged with the axis of the screw 4 .

[0054] In this application, bearing pads are provided at both ends of the sleeve 8, and the active rod 9 and the driven rod 10 pass through the bearing pads at the corresponding ends respectively. The size of the through hole of the bearing pad is the same as the diameter of the active rod 9 and the driven rod 10 to prevent the active rod 9 and the driven rod 10 from being unstable during rotation.

[0055] In the present application, the active rod 9 and the driven rod 10 are engaged with each other through threads; the insertion ends of the active rod 9 and the driven rod 10 are both tapered; the generatrix of the tapered surfaces at the opposite ends of the active rod 9 and the driven rod 10 are arranged in parallel, so that the opposite ends of the two cones are in contact with each other; the outer wall surfaces of the tapered insertion ends of the active rod 9 and the driven rod 10 are respectively provided with oblique threads, and the two oblique threads are engaged with each other.

[0056] When the active rod rotates, the threaded engagement will also drive the driven rod to rotate, and then the screw 4 can be screwed into the alveolar bone. One end of the driven rod 10 in contact with the screw 4 can be set as the head of a screwdriver, so that it can be suitable for different screws 4. The bend of the sleeve 8 can be set to different angles to meet the tilt direction of the screw 4 in different directions. Thereby, the screw 4 can be driven into the alveolar bone of the human body through the action of the above-mentioned drill bit structure. The base 6 is the uppermost end of the entire implant 1, and is provided with a convex setting. The height is set according to the hole depth of the porcelain crown to ensure that the porcelain crown can be embedded in the base 6 as a whole. The base 6 can be embedded in the porcelain crown, thereby realizing tooth implantation.

[0057] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments using the above technical content without departing from the scope of the technical solution of the present invention. The implementation schemes in the above embodiments can be further combined or replaced. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the solution of the present invention.

Claims

1. An implant with branched roots, which is divided into two parts, the upper part is a healing base (6) connected to the gum, and the lower part is implanted in the alveolar bone, characterized in that: The implant (1) is a vertically extending column with a hollow interior and an opening at the top; a base (6) for fixing a porcelain crown is provided at the top of the implant (1); a surface thread (3) is provided at the bottom of the implant (1); the bottom of the implant (1) is a conical flat-bottomed end face (5); at least a through hole (2) inclined to the left and right is provided on the end face; a screw (4) for fixing the implant is inserted into the through hole (2) and is obliquely inserted into the alveolar bone of the human body.

2. The implant with branched roots according to claim 1, characterized in that: The through holes (2) gradually deviate from top to bottom toward the outside of the implant (1), and the distance between the two through holes gradually increases from top to bottom in an outward-facing "X" shape.

3. The implant with branched roots according to claim 1, characterized in that: The screw (4) at least extends to the outside of the through hole (2), a thread is provided on the portion of the screw (4) extending outside the through hole (2), and a pointed cone-shaped nail head is provided at the bottom of the screw (4).

4. The implant with branched roots according to claim 3, characterized in that: A blind hole is provided on the nut of the screw (4).

5. The implant with branched roots according to claim 1, characterized in that: The inner wall of the through hole (2) is provided with an internal thread, the upper half of the screw (4) is provided with a thread at the location where it engages with the internal thread of the through hole (2), and the lower half is provided with a smooth surface at the location where it protrudes from the through hole (2).

6. The implant with branched roots according to claim 1, characterized in that: The base (6) is vertically raised and arranged, and the interior of the base (6) is hollow, and the base (6) can be embedded in the porcelain crown.

7. The implant with branched roots according to claim 6, characterized in that: The top and bottom ends of the base (6) are respectively provided with openings, and the openings are opposite to the inner hollow portion of the base (6).

8. An implant with branched roots according to any one of claims 6 to 7, characterized in that: The widths of the hollow parts of the base (6) and the implant (1) are both greater than a first set value, and the first set value is required to ensure that the screw can pass through.

Images