CN111839769A

CN111839769A - Integrated dental implant

Info

Publication number: CN111839769A
Application number: CN202010737675.XA
Authority: CN
Inventors: 许奎雪; 李宁; 史春宝; 史春生; 康树靖; 王振国; 王建超
Original assignee: Hebei Chunli Hangnuo New Material Technology Co ltd
Current assignee: Hebei Chunli Hangnuo New Material Technology Co ltd
Priority date: 2020-07-28
Filing date: 2020-07-28
Publication date: 2020-10-30

Abstract

The invention relates to the technical field of medical instruments, and provides an integrated dental implant. The method comprises the following steps: a root part integrally provided at a lower portion of the integrated dental implant and capable of being embedded in an alveolar bone; an intra-gingival portion integrally provided on top of the root portion and capable of being embedded in a gingiva covering the alveolar bone; a crown integral part designed as one body with an abutment of the intra-gingival part; the lower part of the root part is provided with a thread part combined with the alveolar bone, and a trabecular bone part is arranged between the thread part and the intra-gingival part. The invention has the beneficial effects that: the trabecular bone part can increase the contact area with normal bone through pores on the surface, thereby ensuring the ingrowth of bone cells, accelerating the speed of clinical osseointegration, shortening the osseointegration process and enabling the implant to be more stable.

Description

Integrated dental implant

Technical Field

The invention relates to the field of medical tools, in particular to an integrated dental implant.

Background

Present dental implant usually adopts shapes such as cylinder, set up the screw thread in the alveolar bone on the surface of cylinder, and present dental implant is planar structure with alveolar ridge contact surface, because the alveolar bone of alveolar ridge department is the arc terminal surface, consequently need polish the alveolar bone of alveolar ridge department, make radian and dental implant's the unanimity, lead to food waste to be detained between the tooth easily, corrode the tooth easily or arouse gum inflammation scheduling problem, stress concentration appears, can lead to the implant to appear becoming flexible equally, influence the osseointegration. The implant is mainly made of titanium and titanium alloy, and has good mechanical property and biocompatibility, so that the implant is the most widely applied material in oral implantation. However, the elastic modulus of the implant is obviously higher than that of human bone tissues, and stress shielding and stress concentration can be generated after the implant is implanted, so that the degradation and absorption of the bone tissues around the implant are triggered, and even the implant is loosened.

Besides the above defects, the prior art mainly has the following defects:

(1) in the prior art, CN105517505A discloses an integrated implant, which includes an endosseous implant part, a gum penetrating part, an insert adhering part, etc., but the crown part of the implant is easy to rotate, which affects the occlusion relationship of the normal oral cavity.

(2) Prior art CN204765988U discloses a loadable one-piece implant, comprising: the intra-osseous part, the intra-gingival part, the crown part of the worn tooth and the like are exposed after the operation, and the initial stability and the aesthetic property are influenced in the use process.

Disclosure of Invention

The invention aims to provide an integrated dental implant to solve the technical problems in the prior art.

In order to achieve the purpose, the invention adopts the technical scheme that: a one-piece dental implant, comprising: a root part integrally provided at a lower portion of the integrated dental implant and capable of being embedded in an alveolar bone; an intra-gingival portion integrally provided on top of the root portion and capable of being embedded in a gingiva covering the alveolar bone; a crown integral part designed as one body with an abutment of the intra-gingival part; the lower part of the root part is provided with a thread part combined with the alveolar bone, and a trabecular bone part is arranged between the thread part and the intra-gingival part.

In an alternative embodiment, the trabecular part has a length of 3-5 mm.

In an optional embodiment, the trabecular bone part structure has a porosity of 70-80%, a filament diameter of 400 μm and a pore size of 500 μm.

In alternative embodiments, the pore morphology of the trabecular bone portion pore structure is regular or irregular in shape.

In an alternative embodiment, the root portion has a length of 6mm to 10mm and a diameter of 3mm to 6.5 mm.

In an alternative embodiment, the thread pitch of the threaded portion is 0.8-1.2 and the thread depth of the threaded portion is 0.2-0.4 mm.

In an optional embodiment, the integrated dental implant is formed by 3D printing of a tantalum metal material.

In an alternative embodiment, the integral crown portion and the abutment of the intra-gingival portion are fixed by a taper fit.

In an optional embodiment, a taper hole is formed in the abutment of the intra-gingival part, and the taper of the taper hole is 6 degrees.

The invention has the beneficial effects that:

(1) the trabecular bone part of the integrated dental implant can increase the contact area with normal bone through pores on the surface, thereby ensuring the ingrowth of osteocytes, accelerating the clinical osseointegration rate, shortening the osseointegration process and enabling the implant to be more stable.

(2) The gingival internal part of the integrated dental implant protects gingival tissues and prevents tooth roots from being exposed, and the gingival internal part cannot be contacted with the upper jaw during occlusion, so that the stability of the implant is improved, and the attractiveness is ensured.

(3) The integrated dental implant is formed by 3D printing of a tantalum metal material, is excellent in mechanical property, high in hardness and resistant to friction and abrasion, and particularly has an elastic modulus close to that of human bones, so that the stress shielding phenomenon is effectively avoided.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic overall structure view of an integrated dental implant according to an embodiment of the present invention.

Fig. 2 is a schematic view of a crown structure of the one-piece dental implant according to an embodiment of the present invention.

Wherein, the reference numbers in the figures are: 1. root portion, 1.1, thread portion, 1.2, trabecular bone portion, 2, intra-gingival portion, 3, taper hole, 4 and dental crown.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly or indirectly secured to the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positions based on the orientations or positions shown in the drawings, and are for convenience of description only and not to be construed as limiting the technical solution. The terms "first", "second" and "first" are used merely for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "plurality" is two or more unless specifically limited otherwise.

Example one

Referring to fig. 1-2, the present embodiment provides a dental implant for promoting bone cell growth, including: a root part 1, the root part 1 being integrally provided at a lower portion of a dental implant which promotes the ingrowth of bone cells and being capable of being embedded in an alveolar bone, preferably, the root part 1 has a length of 6mm and the root part 1 has a diameter of 3 mm.

Specifically, the dental implant which promotes bone cell ingrowth further includes an intra-gingival part 2, the intra-gingival part 2 being integrally provided on the top of the root part 1, and the intra-gingival part 2 being capable of being embedded in a gingiva covering the alveolar bone, the intra-gingival part 2 protecting gingival tissue and not exposing the tooth root, not contacting the upper jaw at the time of occlusion, and not affecting the stability of the implant.

Further, can promote the dental implant that osteocyte grew into still includes the whole part 4 of dental crown, the whole part of dental crown is as an organic whole with the base station design of the internal part of gum 2, it is worth mentioning that the whole part 4 of dental crown is fixed through taper fit with the base station of the internal part of gum 2, be equipped with tapering hole 3 on the base station of the internal part of gum 2, tapering hole 3's tapering is 6, to the tooth column disappearance and the sufficient patient of bone mass, plant corresponding planting body according to the tooth position, the cap of healing up is sewed up on the installation of planting body top, carry out the secondary operation after a period osseointegration is stable, take out the cap of healing and assemble the whole part 4 of integral type dental crown.

In this embodiment, the lower part of the root portion 1 is provided with a threaded portion 1.1 engaging with the alveolar bone, and preferably, the pitch of the threaded portion 1.1 is 0.8mm and the depth of the thread of the threaded portion 1.1 is 0.2 mm. It is noted that the combination of the threaded portion 1.1 with the alveolar bone increases the contact area, contributing to the improvement of the initial stability.

Further, a trabecular bone portion 1.2 is provided between the threaded portion 1.1 and the intra-gingival part 2, the trabecular bone portion 1.2 having a length of 3mm, and specifically, the trabecular bone portion 1.2 has a structure having a porosity of 70%, a filament diameter of 400 μm, and a pore size of 500. mu.m. In this embodiment, the pore morphology of the trabecular bone portion 1.2 pore structure is a regular shape. The trabecular bone part 1.2 can increase the contact area with normal bone through the pores on the surface, thereby ensuring the ingrowth of osteocytes, accelerating the clinical osseointegration rate, shortening the osseointegration process and enabling the implant to be more stable.

In addition, the dental implant capable of promoting the bone cell growth in the embodiment is formed by 3D printing of a tantalum metal material, wherein the tantalum metal is called as "parent biological metal", has excellent biocompatibility and is biologically inert; the corrosion resistance is excellent, the chemical property is stable, no inflammatory reaction is caused with tissue and body fluid, and the coating can be effectively used in human body environment for a long time; excellent mechanical property, high hardness, friction and abrasion resistance, and particularly, the elastic modulus is very close to that of human bones, thereby effectively avoiding the stress shielding phenomenon.

Example two

Referring to fig. 1-2, the present embodiment provides a dental implant for promoting bone cell growth, including: a root part 1, the root part 1 being integrally provided at a lower portion of a dental implant which promotes the ingrowth of bone cells and being capable of being embedded in an alveolar bone, preferably, the root part 1 has a length of 10mm and the root part 1 has a diameter of 6.5 mm.

Specifically, the dental implant which promotes bone cell ingrowth further comprises an intra-gingival part 2, the intra-gingival part 2 is integrally provided on the top of the root part 1, and the intra-gingival part 2 can be embedded in a gingiva covering the alveolar bone, the intra-gingival part 2 protects gingival tissue and does not expose the tooth root, does not contact with the upper jaw when occluded, and does not affect the stability of the implant.

In this embodiment, the lower part of the root portion 1 is provided with a threaded portion 1.1 engaging with the alveolar bone, and preferably, the pitch of the threaded portion 1.1 is 1.2mm and the depth of the thread of the threaded portion 1.1 is 0.4 mm. It is noted that the combination of the threaded portion 1.1 with the alveolar bone increases the contact area, contributing to the improvement of the initial stability.

Further, a trabecular bone portion 1.2 is provided between the threaded portion 1.1 and the intra-gingival part 2, the trabecular bone portion 1.2 having a length of 5mm, and specifically, the trabecular bone portion 1.2 has a structure having a porosity of 80%, a filament diameter of 400 μm, and a pore size of 500. mu.m. In this embodiment, the pore morphology of the trabecular bone portion 1.2 pore structure is irregular. The trabecular bone part 1.2 can increase the contact area with normal bone through the pores on the surface, thereby ensuring the ingrowth of osteocytes, accelerating the clinical osseointegration rate, shortening the osseointegration process and enabling the implant to be more stable.

In addition, the dental implant capable of promoting the bone cell growth in the embodiment is formed by 3D printing of a tantalum metal material, wherein the tantalum metal is called as "parent biological metal", has excellent biocompatibility and is biologically inert; the corrosion resistance is excellent, the chemical property is stable, no inflammatory reaction is caused with tissue and body fluid, and the coating can be effectively used in human body environment for a long time; excellent mechanical property, high hardness, friction and abrasion resistance, and particularly, the elastic modulus is very close to that of human bones, thereby effectively avoiding the stress shielding phenomenon. The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. A one-piece dental implant, comprising:

a root part (1), the root part (1) being integrally provided at a lower portion of the integrated dental implant and being capable of being embedded in an alveolar bone;

an intra-gingival part (2), the intra-gingival part (2) being integrally provided on top of the root part (1), and the intra-gingival part (2) being capable of being embedded within a gingiva covering the alveolar bone;

a crown integral part (4) designed as one piece with the abutment of the intra-gingival part (2);

the method is characterized in that: the lower part of the root part (1) is provided with a thread part (1.1) combined with the alveolar bone, and a trabecular bone part (1.2) is arranged between the thread part (1.1) and the gingival inner part (2).

2. The one-piece dental implant according to claim 1, wherein the trabecular bone part (1.2) has a length of 3-5 mm.

3. The one-piece dental implant according to claim 2, wherein the trabecular bone part (1.2) structure has a porosity of 70% to 80%, a filament diameter of 400 μm and a pore size of 500 μm.

4. The one-piece dental implant according to claim 3, wherein the pore morphology of the trabecular bone part (1.2) pore structure is regular or irregular in shape.

5. The one-piece dental implant according to claim 4, wherein the root portion (1) has a length of 6mm to 10mm and the root portion (1) has a diameter of 3mm to 6.5 mm.

6. The one-piece dental implant according to claim 1, wherein the thread pitch of the threaded portion (1.1) is 0.8 to 1.2, and the thread depth of the threaded portion (1.1) is 0.2mm to 0.4 mm.

7. The one-piece dental implant of claim 1, wherein the one-piece dental implant is 3D printed and molded from a tantalum metal material.

8. The one-piece dental implant according to claim 1, characterized in that the abutment of the dental crown integral part (4) and the intra-gingival part (2) is fixed by a taper fit.

9. The one-piece dental implant according to claim 8, wherein the abutment of the intra-gingival part (2) is provided with a tapered hole (3), the taper of the tapered hole (3) being 6 °.