CN215839609U

CN215839609U - Implant artificial tooth device

Info

Publication number: CN215839609U
Application number: CN202121958986.5U
Authority: CN
Inventors: 董耀祖; 汤正婷; 孙嫣然
Original assignee: Yantai Hangke Ruisi Medical Technology Co ltd
Current assignee: Yantai Hangke Ruisi Medical Technology Co ltd
Priority date: 2021-08-19
Filing date: 2021-08-19
Publication date: 2022-02-18
Anticipated expiration: 2031-08-19

Abstract

The utility model relates to a denture implanting device, which comprises an implant and a dental crown, wherein the dental crown is arranged on the implant through a screw, the implant comprises a main body part, the outer surface of the main body part is provided with an external thread, a blind hole is arranged in the implant, the blind hole is in a step shape, and a shallow cylindrical hole, a deep cylindrical hole and a threaded hole are sequentially arranged in the blind hole from top to bottom; the interior of the dental crown is hollow, a stepped hole is formed in the dental crown, a short cylinder matched with the shallow cylindrical hole and a long cylinder matched with the deep cylindrical hole are arranged at the lower part of the dental crown, and the rod part of the screw penetrates through the stepped hole to be connected with the threaded hole. The utility model increases the strength of the part of the dental crown contacting with and inserting into the implant, the dental crown is fixed on the implant through the central screw, the positioning is accurate, the abutment is not needed, the implantation repairing structure is greatly simplified, the repairing operation is simplified, the repairing time is shortened, the structure is simple, the manufacture is easy, and the manufacture and maintenance cost is low.

Description

Implant artificial tooth device

Technical Field

The utility model relates to a denture planting device, and belongs to the technical field of oral implant medicine.

Background

In the early 50 s of the last century, after professor Br nemark, having discovered the "osseointegration" phenomenon of titanium metal, he considered that titanium could be utilized to make dental implants to construct artificial teeth, and he then implanted his titanium dental implants into the mouth of a volunteer in 1965 and completed denture repair, his attempt being successful; since the 80 s, titanium dental implants became popular worldwide; at present, the tooth implant becomes an important and first means for restoring missing teeth of human beings, is known as one of the greatest practical utility models of human beings in the twentieth century, and can enable human beings to obtain a third pair of teeth, namely, after the deciduous teeth and the permanent teeth, if the teeth are lost, a new tooth is reconstructed by utilizing a titanium dental implant technology.

The first successful commercial titanium dental implant in the world is the Br nemark series of Nobel Biocare, sweden, and this screw-shaped dental implant forms the basis for the development of the dental implant, and its basic structure is to divide the artificial tooth into three parts, namely an implant, an abutment and a crown, wherein the abutment must be fixed to the implant using screws, and the crown is fixed to the abutment, usually by gluing.

In the last 90 years of the last century, titanium dental implant technology has become mature, generally paid attention to and popularized, and among them, implant restoration technology itself includes two branch technologies, namely implant technology (including abutment) and crown technology (namely denture technology), and the currently popular crown technology can provide various crown products, including metal crown, metal porcelain crown, full porcelain crown and the like.

The history of using precious metal gold for decorating and strengthening teeth in humans has been more than two thousand years, and has been used so far, and modern science and dentistry have provided more options, for example, for more than 20 years, ceramic crowns with better biocompatibility have been valued, among which zirconia crowns have been developed most rapidly, there are zirconia fused to zirconia (PFZ) crowns, structurally similar to metal fused to metal (PFM) crowns, and fully zirconia crowns (monolithic zirconia (MZ), or Full Contact Zirconia (FCZ) crowns), and their technologies have been used in a great number of practical dental clinics, each of which has advantages and its own indications.

Zirconia, known as "king of ceramics", has a strength of up to 1200MPa, which is a strength level of stainless steel and has both high hardness and good impact toughness, and is the only variety of known practical ceramic materials, which has been widely used as a crown material in dental restorative clinics, but in dental implant restorative treatment, such as the use of a zirconia-dedicated abutment (i.e., Ti-base abutment), the abutment has limited effects, such as: the existence of the abutment can complicate the system, increase the complexity of the repair operation, prolong the treatment time, increase the repair cost, and the like.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model provides the artificial tooth implanting device which has the advantages of simple structure, convenience in operation, no need of a base station, convenience in operation, convenience in implanting and repairing and low cost.

The technical scheme for solving the technical problems is as follows: the artificial tooth implanting device comprises an implant body and a dental crown, wherein the dental crown is arranged on the implant body through a screw, the implant body comprises a main body part, an external thread is arranged on the outer surface of the main body part, a blind hole is arranged in the implant body and is in a step shape, and a shallow cylindrical hole, a deep cylindrical hole and a threaded hole are sequentially arranged in the blind hole from top to bottom;

the interior of the dental crown is hollow, a stepped hole is formed in the dental crown, a short cylinder matched with the shallow cylindrical hole and a long cylinder matched with the deep cylindrical hole are arranged at the lower part of the dental crown, and the rod part of the screw penetrates through the stepped hole to be connected with the threaded hole.

The utility model has the beneficial effects that: the long cylinder of crown and the dark cylinder hole cooperation of implant, the long cylinder of crown inserts the deep cylinder hole of implant promptly, the short cylinder of crown and the shallow cylinder hole cooperation of implant, the short cylinder of crown and the cooperation of shallow cylinder hole cartridge in the implant are inserted to the crown promptly, the long cylinder of crown and the cooperation of short cylinder form ladder cylinder structure, can provide higher root for the crown, the intensity of crown and implant contact and insert the implant part has been increased promptly, the crown passes through central screw fixation on the implant, the location is accurate, need not the base station, this implantation repair structure has been simplified greatly, the repair operation has been simplified, the repair time has been shortened, the steam generator is simple in structure, and easy manufacture is also realized, the cost of manufacture and maintenance is low.

On the basis of the technical scheme, the utility model can be further improved as follows.

Furthermore, at least one boss is arranged at the bottom of the shallow cylindrical hole, and a groove corresponding to the boss is arranged on the short cylinder.

The beneficial effect who adopts above-mentioned further scheme is, in order to further guarantee the location stability of implant and dental crown, avoid the two relative rotation, so set up the boss and rather than the recess that corresponds, form "wedge" effect through the cooperation of boss and recess to play the circumferencial of dental crown and fix a position or anti-spiral effect.

Furthermore, the implant comprises a head, a round table is arranged at the top of the head, a supporting surface of the round table is of a plane structure or a conical surface structure, and an annular bottom surface matched with the supporting surface of the round table is arranged on the dental crown.

The further scheme has the beneficial effects that the supporting surface at the top of the circular truncated cone can be a plane structure or a conical surface structure, the conical angle of the conical surface structure can be set between 160 degrees and 150 degrees, and a larger contact area can be provided for the joint part of the dental crown and the implant, and the surface area of the conical surface structure is far larger than that of a circular plane with the same diameter, so that the stress at the position can be reduced, and the sealing property can be enhanced.

Furthermore, the implant further comprises a neck part arranged between the head part and the main body part, and the neck part is of an arc-shaped concave structure.

The further scheme has the advantages that the arc thin neck part is positioned in the gum, the implant has gum-penetrating structural characteristics for gum-penetrating implants, and is also called non-submerged implants or soft tissue horizontal implants, the operation method is a one-time operation type, namely, only one-stage operation and implantation operation are performed, after the soft tissue is healed and removed, the model can be taken to install the crown without performing invasive operation (second-stage operation), and after the crown is correctly installed, the exposed part of the crown screw hole is blocked by a conventional method.

Further, the outer diameter of the circular truncated cone is larger than the maximum diameter of the main body part.

The dental prosthesis has the advantages that the dental crown is more stably supported, and the artificial tooth is convenient to implant and convenient to follow-up repair operation.

Furthermore, a hexagonal hole is further formed between the deep cylindrical hole and the threaded hole.

The technical scheme has the advantages that the hexagonal hole is not crown anti-rotation, but is a rotation driving structure of the implant, and the hexagonal hole is used for driving the implant to be screwed into a prepared jaw hole in an implantation operation.

Furthermore, the inner wall of the long cylinder is provided with an internal thread in threaded connection with the screw.

Adopt the beneficial effect of above-mentioned further scheme to be connected the screw hole of screw accessible and implant and fix the dental crown on the implant, and ladder hole also can set up the internal thread in the dental crown, and the internal thread can be connected with the external screw thread of screw, further improves screw and dental crown installation stability.

Furthermore, the long cylinder is in a cone structure with a thick upper part and a thin lower part.

The further scheme has the advantages that the conical structure with a small cone angle is adopted, the cone angle is 3-5, the root of the long cylinder can be in contact with the upper part of the deep cylindrical hole of the implant to be sealed, the wall of the upper end hole of the deep cylindrical hole can be properly extruded by the long cylinder, and the characteristic that the dental crown material with high hardness can bear compressive stress is better utilized.

Further, the boss is of an arc convex structure, the groove is of an arc concave structure matched with the arc convex structure, and a central angle corresponding to the arc convex structure is 45-90 degrees.

Adopt above-mentioned further scheme's beneficial effect is, the inside and outside surface of boss is the arc respectively, and the arc of internal surface and long cylindrical surface looks adaptation, recess and boss looks adaptation, and the boss closely forms "wedge" effect with the recess block, plays the circumferential location or the anti-spiral effect of dental crown.

Furthermore, the main body part is provided with at least one rotary cutting groove.

The further proposal has the advantages of good self-tapping incision cutting performance, improving the initial stability of the implant and achieving the purpose of shortening the time of the dental implant operation

Furthermore, the dental crown is made of zirconium dioxide.

The further proposal has the advantages that the dental crown adopts the fully-zirconia dental crown either monolithic zirconia or full contourer zirconia, and the dental crown structure can avoid the porcelain collapse phenomenon which troubles the dental community for a long time by virtue of the high strength and good toughness of zirconia. But not a composite all-ceramic porcelain crown structure with other ceramics fused on the zirconia inner crown.

Drawings

FIG. 1 is a schematic structural view of the present invention as a whole;

FIG. 2 is a schematic view in plan cut-away of the utility model as a whole;

FIG. 3 is a schematic perspective view of the structure of the implant of the present invention;

FIG. 4 is a schematic perspective view of the implant of the present invention showing the convex arc;

FIG. 5 is a schematic cross-sectional view of the implant of the present invention and showing the position of the virtual cutting plane;

FIG. 6 is a schematic plane view of the present invention and shows the position of the virtual cutting plane;

FIG. 7 is a schematic structural diagram of the present invention at the virtual cutting plane 4;

FIG. 8 is a schematic top perspective view of a dental crown of the present invention;

FIG. 9 is a schematic bottom perspective view of a crown in accordance with the present invention;

FIG. 10 is a sectional perspective view of the dental crown of the present invention;

FIG. 11 is a schematic view of a screw structure according to the present invention;

FIG. 12 is a schematic plan sectional view of a circular truncated cone and an elongated circular cylinder according to the present invention when the circular truncated cone and the elongated circular cylinder are tapered;

FIG. 13 is a schematic plan view of the clinical restoration effect of the present invention.

In the figure, 1, an implant; 1a, a main body part; 1b, a neck; 1c, a circular truncated cone; 1d, shallow cylindrical holes; 1e, deep cylindrical holes; 1f, shallow cylindrical hole bottom; 1g, hexagonal holes; 1h, boss; 1k, the top surface of the boss; 1m, a threaded hole; 2. a crown of a tooth; 2a, a crown body; 2b, internal threads; 2c, long round columns; 2d, a groove top; 2e, a groove; 2f, an annular bottom surface; 2g, short cylinder; 2h, the bottom surface of the short cylinder; 3. a screw; 3a, a screw head; 3b, a screw rod; 3c, external threads; 4. virtual cutting plane; 5. the jaw bone; 6. the gum is formed.

Detailed Description

The principles and features of this invention are described below in conjunction with examples, which are set forth to illustrate, but are not to be construed to limit the scope of the utility model.

As shown in fig. 1 to 13, a denture implanting device comprises an implant 1 and a dental crown 2, wherein the dental crown is arranged on the implant through a screw 3, the implant comprises a main body part 1a, an external thread is arranged on the outer surface of the main body part, a blind hole is arranged inside the implant, the blind hole is in a step shape, and a shallow cylindrical hole 1d, a deep cylindrical hole 1e and a threaded hole 1m are sequentially arranged in the blind hole from top to bottom;

the crown body 2a of the dental crown is hollow, a stepped hole is formed in the crown body, a short cylinder 2g matched with the shallow cylindrical hole and a long cylinder 2c matched with the deep cylindrical hole are arranged at the lower part of the dental crown, and the rod part of the screw penetrates through the stepped hole to be connected with the threaded hole. The bottom surface 2h of the short cylinder is in contact with the bottom 1f of the shallow cylinder hole.

At least one boss 1h is arranged at the bottom of the shallow cylindrical hole, and a groove 2e corresponding to the boss is arranged on the short cylinder. In order to further ensure the positioning stability of the implant and the dental crown and avoid the relative rotation of the implant and the dental crown, the boss and the corresponding groove are arranged, and a wedge effect is formed by the cooperation of the boss and the groove, so that the circumferential positioning or anti-rotation effect of the dental crown is realized. 1-3 of the arc protrusions can be arranged and uniformly distributed on the bottom 1f of the shallow cylindrical hole.

The implant comprises a head, a round table 1c is arranged at the top of the head, a supporting surface of the round table is of a plane structure or a conical surface structure, and an annular bottom surface 2f matched with the supporting surface of the round table is arranged on the dental crown. The supporting surface at the top of the circular truncated cone can be a plane structure or a conical surface structure, the conical angle of the conical surface structure can be set between 160 degrees and 150 degrees, a larger contact area can be provided for the joint part of the dental crown and the implant, and the surface area of the conical surface structure is far larger than that of a circular plane with the same diameter, so that the stress at the position can be reduced, and the sealing property can be enhanced.

The implant further comprises a neck part 1b arranged between the head part and the main body part, and the neck part is of an arc-shaped concave structure. The arc thin neck part is positioned in the gum 6, the implant has the gum penetrating structural characteristic and is also called as a non-submerged implant or a soft tissue horizontal implant, the operation method is a one-time operation type, namely, only a first-stage operation and an implantation operation are performed, after the soft tissue is healed and the line is removed, the model can be taken and the crown can be installed without performing invasive operation (second-stage operation), and after the crown is correctly installed, the exposed part of the crown screw hole is blocked by a conventional method.

The outer diameter of the circular truncated cone is larger than the maximum diameter of the main body part. On one hand, the supporting dental crown is more stable, on the other hand, the artificial tooth is convenient to implant, and the subsequent repair operation is convenient.

And a hexagonal hole 1g is also arranged between the deep cylindrical hole and the threaded hole. The purpose of the hexagonal hole is not crown anti-rotation, but a rotation driving structure of the implant body, and the hexagonal hole is used for driving the implant body to be screwed into a prepared jaw hole in an implantation operation.

And the inner wall of the long cylinder is provided with an internal thread 2b in threaded connection with the screw. The screw accessible is connected with the screw hole of implant and fixes the dental crown on the implant, and the shoulder hole also can set up the internal thread in the dental crown, and the internal thread can be connected with the external screw thread of screw, further improves screw and dental crown installation stability.

The long cylinder is in a cone structure with a thick upper part and a thin lower part. Specifically, a cone structure with a small cone angle is adopted, the cone angle is 3-5 degrees, the root of the long cylinder can be in contact with the upper part of the deep cylindrical hole of the implant to be sealed, the wall of the upper end hole of the deep cylindrical hole can be properly extruded by the long cylinder, and the characteristic that the dental crown material with high hardness has better capability of bearing compressive stress is utilized.

The boss is of an arc convex structure, the groove is of an arc concave structure matched with the arc convex structure, and the central angle corresponding to the arc convex structure is 45-90 degrees. The inner surface and the outer surface of the boss are respectively arc-shaped, the arc-shaped inner surface is matched with the outer surface of the long cylinder, the groove is matched with the boss, and the boss and the groove are clamped tightly to form a wedge effect, so that the circumferential positioning or anti-rotation effect of the dental crown is achieved.

The height of the boss is half of the depth of the shallow cylindrical hole, and the depth of the groove is half of the height of the short cylinder. The boss and the groove are more stably clamped and positioned, and the problem that the boss and the groove are not stably positioned due to insufficient height of the boss is avoided. A small section of boss 1h is arranged on the bottom 1f of the shallow cylindrical hole, and the top surface 1k of the boss is positioned in the middle of the depth of the shallow cylindrical hole 1d, namely, the height of the boss 1h is half of the depth of the shallow cylindrical hole. The position of the groove top 2d is positioned at the middle waist part of the short cylinder 2g, and the depth of the groove is half of the length of the short cylinder.

The main body part is provided with at least one rotary cutting groove. Has good self-tapping incision cutting performance, can improve the initial stability of the implant and achieve the purpose of shortening the time of the dental implant operation

The dental crown is made of zirconium dioxide. The full-zirconia crown monolithic zirconia or full contourer zirconia is adopted as the crown, the full-zirconia crown can be selected as the posterior tooth, the PFZ crown can be selected as the anterior tooth in view of the poor aesthetic property and simulation degree of the full-zirconia crown compared with the zirconia porcelain crown, and in short, the crown structure can avoid the porcelain collapse phenomenon which troubles the dental department for a long time by virtue of the high strength and good toughness of the zirconia.

The screw enters the hole of the dental crown and reaches the threaded hole in the blind hole of the implant, the blind hole of the implant is fixed on the dental implant by screwing with the threaded hole, and the positions of the implant 1, the dental crown 2 and the screw 3 can be clearly shown by a cross-sectional view after a virtual section 4 in figure 7.

See fig. 11, the central screw 3, which has a cylindrical head screw head 3a, a rod screw rod 3b and an external thread 3c at the lower segment of the rod, can adopt a fine thread to obtain a better anti-loosening effect, the fine thread has a better anti-loosening effect, and since its helix angle is smaller, in addition, the thread diameter is also the rod diameter of 2mm and 2.2mm, then the thread specification adopts M2 × 0.3 and M2.2 × 0.3, and a metric 60-degree triangular thread can provide higher connection strength.

FIG. 12 shows a partial view of a dental crown and an implant, in which a circular platform 1c of the implant 1 can be configured as a conical surface, and a conical angle is configured between 160 DEG and 150 DEG, which can provide a larger contact area for the joint of the dental crown and the implant, and the surface area of the conical platform is far larger than that of a circular plane with the same diameter, so that the stress at the joint can be reduced and the sealing performance can be enhanced, and in addition, a long cylinder 2c of the dental crown 2 can also be configured as a conical body with a small conical angle, and the conical angle is configured between 3 DEG and 5 DEG, so that the root of the long cylinder 2c can be in contact with and sealed with the upper part of a deep cylindrical hole 1e of the implant, and the wall of the upper end of the deep cylindrical hole 1e can be properly pressed by the long cylinder 2c, and the capability of bearing the compressive stress by the zirconia ceramic material is more excellent.

Referring to fig. 9, the length of the short cylinder 2g of the crown 2 can be set to only reach the arc concave top 2d, so that all the arc concave 2e is cancelled, the crown 2 has no anti-rotation function, and can be retained and fixed at any position in the circumferential direction after the implant is inserted, which is suitable for a bridge, i.e. a multi-crown connected structure, because the bridge is supported by two or more implants, i.e. a three-unit bridge, i.e. two crowns matched with the implant are arranged at two ends of the bridge, and a suspended crown without the support of the implant is arranged in the middle, therefore, after the two crowns are respectively inserted into the implant, a natural anti-rotation effect is formed for the whole bridge, and the crowns do not need to be anti-rotation by themselves, on the contrary, if an anti-rotation structure is arranged in the crowns, assembly interference cannot be generated, or cannot be well positioned.

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 utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The denture implanting device comprises an implant (1) and a dental crown (2), wherein the dental crown (2) is arranged on the implant (1) through a screw (3), and is characterized in that the implant (1) comprises a main body part (1a), an external thread is arranged on the outer surface of the main body part (1a), a blind hole is arranged in the implant (1) and is in a step shape, and a shallow cylindrical hole (1d), a deep cylindrical hole (1e) and a threaded hole (1m) are sequentially arranged in the blind hole from top to bottom;

the dental crown (2) is hollow, a stepped hole is formed in the dental crown, a short cylinder (2g) matched with the shallow cylindrical hole (1d) and a long cylinder (2c) matched with the deep cylindrical hole (1e) are arranged at the lower part of the dental crown (2), and the rod part of the screw (3) penetrates through the stepped hole to be connected with the threaded hole (1 m).

2. The denture implant device according to claim 1, wherein the bottom of the shallow cylindrical hole (1d) is provided with at least one boss (1h), and the short cylinder (2g) is provided with a groove (2e) corresponding to the boss (1 h).

3. The denture implant device according to claim 1 or 2, wherein the implant (1) comprises a head, a circular truncated cone (1c) is arranged on the top of the head, a supporting surface of the circular truncated cone (1c) is in a plane structure or a conical surface structure, and an annular bottom surface (2f) matched with the supporting surface of the circular truncated cone (1c) is arranged on the dental crown (2).

4. The implant denture device according to claim 3, wherein the implant (1) further comprises a neck portion (1b) disposed between the head portion and the body portion (1a), the neck portion (1b) having a circular arc concave structure.

5. The denture implant device according to claim 1 or 2, wherein a hexagonal hole (1g) is further provided between the deep cylindrical hole (1e) and the threaded hole (1 m).

6. The denture implant device according to claim 1, wherein the inner wall of the long cylinder (2c) is provided with an internal thread (2b) which is in threaded connection with the screw (3).

7. The denture implant device according to claim 1, wherein the long cylinder (2c) is a cone structure with a thick upper part and a thin lower part.

8. The denture implant device according to claim 2, wherein the boss (1h) is a circular arc convex structure, the groove (2e) is a circular arc concave structure matched with the circular arc convex structure, and the central angle of the circular arc convex structure is 45-90 degrees.

9. The denture implant device according to claim 3, wherein the circular truncated cone (1c) has an outer diameter greater than the maximum diameter of the main body portion (1 a).

10. The implant denture device according to claim 1 or 2, wherein the dental crown (2) is made of zirconium dioxide.