CN214049151U

CN214049151U - Dental implant

Info

Publication number: CN214049151U
Application number: CN202023015259.3U
Authority: CN
Inventors: 周俊; 常林
Original assignee: Guilin Woodpecker Medical Instruments Co Ltd
Current assignee: Guilin Woodpecker Medical Instruments Co Ltd
Priority date: 2020-12-15
Filing date: 2020-12-15
Publication date: 2021-08-27
Anticipated expiration: 2030-12-15

Abstract

The utility model provides a dental implant, relates to dental medical instrument technical field, including bottom, somatic part and the neck that connects gradually, the outer wall of bottom, somatic part and neck is provided with first screw thread, second screw thread and third screw thread respectively, and first screw thread, second screw thread and third screw thread connect gradually, and the thread height of first screw thread, second screw thread and the thread height of third screw thread dwindle gradually along bottom to neck direction. The dental implant can improve the compressive strength and the fatigue strength of the dental implant on the premise of ensuring good initial stability, thereby better meeting the requirement of immediate implantation operation.

Description

Dental implant

Technical Field

The utility model relates to a dental medical instrument technical field particularly, relates to a dental implant.

Background

In the dental implant operation, a doctor needs to judge the bone condition of the edentulous area according to a CBCT (Cone beam CT) image, so as to select a corresponding dental implant which can be implanted immediately, so that the life quality of the edentulous patient is obviously improved and enhanced.

However, in the existing dental implant which can be instantly implanted, the height of the screw thread is the same at each part of the dental implant, and if the height of the screw thread is deeper, the wall of the dental implant is thin, which affects the compressive strength and fatigue strength of the dental implant, causing mechanical complications, and if the height of the screw thread is shallower, the initial stability obtained by rubbing with the bone is insufficient, which affects the success rate of the instant implant surgery.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a dental implant can improve dental implant's compressive strength and fatigue strength under the prerequisite of guaranteeing good initial stability to satisfy the demand of planting the operation at once better.

The embodiment of the utility model is realized like this:

an embodiment of the utility model provides a dental implant, including bottom, somatic part and the neck that connects gradually, the bottom the somatic part with the outer wall of neck is provided with first screw thread, second screw thread and third screw thread respectively, first screw thread the second screw thread with the third screw thread connects gradually, the thread height of first screw thread the thread height of second screw thread with the thread height of third screw thread is followed the bottom extremely the neck direction reduces gradually. The dental implant can improve the compressive strength and the fatigue strength of the dental implant on the premise of ensuring good initial stability, thereby better meeting the requirement of immediate implantation operation.

Optionally, the thread height of the first thread is between 0.45mm and 0.55 mm.

Optionally, the thread height of the second thread is between 0.3mm and 0.35 mm.

Optionally, the thread height of the third thread is between 0.1mm and 0.2 mm.

Optionally, the first thread, the second thread and the third thread are each of a double-start thread configuration.

Optionally, the lead of the bifilar thread structure is between 1.2mm and 2.0mm, and the pitch of the bifilar thread structure is between 0.6mm and 1.0 mm.

Optionally, the lead of the bifilar thread structure is 1.6mm and the pitch of the bifilar thread structure is 0.8 mm.

Optionally, the end surface of the bottom is a plane.

Optionally, a plurality of spiral cutting grooves are formed in the outer wall surface of the bottom, and the spiral cutting grooves are arranged at intervals and are evenly distributed.

Optionally, the dental implant is a tapered structure, and the outer diameter of the tapered structure gradually increases along the direction from the bottom to the neck.

The utility model discloses beneficial effect includes:

this dental implant is including the bottom, somatic part and the neck that connect gradually, and the outer wall of bottom, somatic part and neck is provided with first screw thread, second screw thread and third screw thread respectively, and first screw thread, second screw thread and third screw thread connect gradually to carry out the adaptability design to the screw thread at different positions. Wherein, the thread height of first screw thread, the thread height of second screw thread and the thread height of third screw thread dwindle gradually along bottom to neck direction to satisfy the planting demand at different positions. Compare in each position screw tooth height among the prior art the same dental implant, the dental implant that this application provided can improve the compressive strength and the fatigue strength of dental implant under the prerequisite of guaranteeing good initial stability to satisfy the demand of planting the operation immediately better. Specifically, the thread height of the first thread is larger, so that a higher torque value can be obtained when the first thread is implanted into a fresh extraction socket, and the initial stability is increased. The second thread has a moderate thread height, has the capability of laterally compressing bone when implanted, and can obtain higher primary stability in both poor or medium bone quality extraction sockets and fresh extraction sockets. The thread height of third screw thread is less, has guaranteed the sufficient intensity of neck at first, and simultaneously, because the neck is the combination department of dental implant and base station, the combination department of cortical bone and cancellous bone, be the place that the interlock stress is most concentrated, and the thread height of third screw thread is less, implant that just can be fine through enlarging the neck aperture, it does not have the extrusion to neck bone tissue to have guaranteed also like this that dental implant, reduce the stimulation to osteoclast, and then reduce the neck bone absorption, the operation success rate has also been improved greatly.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a dental implant according to an embodiment of the present invention;

fig. 2 is a second schematic structural view of a dental implant according to an embodiment of the present invention;

fig. 3 is a third schematic structural view of a dental implant according to an embodiment of the present invention.

Icon: 100-a dental implant; 10-bottom; 11-a first thread; 12-spiral cutting grooves; 20-a body; 21-a second thread; 30-neck part; 31-third thread.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be internal to both elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

With respect to the timing of dental implant implantation after tooth extraction, the current consensus classification is divided into four categories: the first type is that the dental implant is implanted immediately after tooth extraction, so that the operation frequency is reduced, and the treatment time is shortened; secondly, after the soft tissue is healed (4-8 weeks after tooth extraction), the dental implant is implanted, and the dental implant has the characteristics of increasing the amount of the soft tissue to obtain soft tissue closure and allowing the healing of local focus; thirdly, the bone tissue is primarily healed (12-16 weeks after tooth extraction) and implanted into the dental implant, so that the dental implant has the characteristics that the soft tissue is completely healed, the closure is facilitated, and the bone tissue is basically filled in the tooth extraction socket; and in the fourth class, the dental implant is implanted into the tooth extraction site after the tooth extraction site is completely healed (the tooth extraction period exceeds 16 weeks), and the dental implant has the characteristics of completely healing soft tissues and completely healing bone.

Among them, the implantation of a dental implant immediately after tooth extraction may be called immediate implantation (immediate implantation). The instant planting reduces the operation frequency, shortens the course of treatment, has small operation wound and little pain of patients, and is widely applied in the treatment process.

For this purpose, referring to fig. 1 to 3, the present embodiment provides a dental implant 100 suitable for immediate implantation, which includes a bottom 10, a body 20, and a neck 30 connected in sequence, wherein the outer wall surfaces of the bottom 10, the body 20, and the neck 30 are respectively provided with a first thread 11, a second thread 21, and a third thread 31, the first thread 11, the second thread 21, and the third thread 31 are connected in sequence, and the thread height of the first thread 11, the thread height of the second thread 21, and the thread height of the third thread 31 are gradually reduced along the direction from the bottom 10 to the neck 30. The dental implant 100 can improve the compressive strength and fatigue strength of the dental implant 100 on the premise of ensuring good initial stability, thereby better satisfying the demand of immediate implantation surgery.

First, the dental implant 100 includes a base 10, a body 20, and a neck 30, wherein the base 10, the body 20, and the neck 30 are connected in sequence. In the present embodiment, the bottom part 10, the body part 20 and the neck part 30 are integrally formed to ensure the integrity and stability of the dental implant 100, thereby preventing the dental implant 100 from having problems in stability and further affecting the stability of osseointegration.

Second, the outer wall surfaces of the bottom 10, the body 20 and the neck 30 are respectively provided with a first thread 11, a second thread 21 and a third thread 31, in other words, the outer wall surface of the bottom 10 is provided with the first thread 11, the outer wall surface of the body 20 is provided with the second thread 21, and the outer wall surface of the neck 30 is provided with the third thread 31, wherein the first thread 11, the second thread 21 and the third thread 31 are sequentially connected so as to be adapted to threads of different portions.

Thirdly, the thread height of the first thread 11, the thread height of the second thread 21 and the thread height of the third thread 31 are gradually reduced along the direction from the bottom 10 to the neck 30, in other words, along the direction from the bottom 10 to the neck 30, the thread height of the first thread 11 is smaller than the thread height of the second thread 21, and the thread height of the second thread 21 is smaller than the thread height of the third thread 31, so as to meet the planting requirements of different parts.

In addition, in the present embodiment, the thread heights of the first thread 11, the second thread 21 and the third thread 31 are gradually reduced along the direction from the bottom 10 to the neck 30, in other words, the thread height of the first thread 11 is gradually reduced along the direction from the bottom 10 to the neck 30, the thread height of the second thread 21 is gradually reduced along the direction from the bottom 10 to the neck 30, and the thread height of the third thread 31 is gradually reduced along the direction from the bottom 10 to the neck 30, so as to obtain the torque value uniformly and rapidly, thereby increasing the initial stability and further improving the success rate of the operation.

In particular, the greater the thread height of the first thread 11, a higher torque value can be obtained in implanting a fresh extraction socket, increasing the initial stability. The second thread 21 has a moderate thread height, has the ability to laterally compress bone when implanted, and achieves high primary stability in both poor or moderate bone quality extraction sockets as well as fresh extraction sockets. The thread height of the third thread 31 is small, the enough strength of the neck 30 is firstly ensured, meanwhile, the neck 30 is the joint of the dental implant 100 and the abutment, the joint of cortical bone and cancellous bone is the place where the occlusion stress is most concentrated, the thread height of the third thread 31 is small, the implant can be well implanted by enlarging the aperture of the neck 30, and therefore the dental implant 100 is ensured not to extrude the bone tissue of the neck 30, the stimulation to osteoclasts is reduced, the bone absorption of the neck 30 is further reduced, and the success rate of the operation is greatly improved.

As described above, the dental implant 100 includes the base 10, the body 20 and the neck 30 which are connected in sequence, the outer wall surfaces of the base 10, the body 20 and the neck 30 are respectively provided with the first screw 11, the second screw 21 and the third screw 31, and the first screw 11, the second screw 21 and the third screw 31 are connected in sequence so as to be adapted to the screw of different portions. The thread height of the first thread 11, the thread height of the second thread 21 and the thread height of the third thread 31 are gradually reduced along the direction from the bottom 10 to the neck 30, so that the planting requirements of different parts are met. Compare in the dental implant that each position screw tooth height is the same among the prior art, the dental implant 100 that this application provided can improve the compressive strength and the fatigue strength of dental implant 100 under the prerequisite of guaranteeing good initial stability to satisfy the demand of planting the operation immediately better. In particular, the greater the thread height of the first thread 11, a higher torque value can be obtained in implanting a fresh extraction socket, increasing the initial stability. The second thread 21 has a moderate thread height, has the ability to laterally compress bone when implanted, and achieves high primary stability in both poor or moderate bone quality extraction sockets as well as fresh extraction sockets. The thread height of the third thread 31 is small, the enough strength of the neck 30 is firstly ensured, meanwhile, the neck 30 is the joint of the dental implant 100 and the abutment, the joint of cortical bone and cancellous bone is the place where the occlusion stress is most concentrated, the thread height of the third thread 31 is small, the implant can be well implanted by enlarging the aperture of the neck 30, and therefore the dental implant 100 is ensured not to extrude the bone tissue of the neck 30, the stimulation to osteoclasts is reduced, the bone absorption of the neck 30 is further reduced, and the success rate of the operation is greatly improved.

Optionally, the thread height of the first thread 11 is between 0.45mm and 0.55mm, such as 0.45mm, 0.47mm, 0.49mm, 0.51mm, 0.53mm, or 0.55mm, etc. Optionally, the thread height of the second thread 21 is between 0.3mm and 0.35mm, such as 0.3mm, 0.31mm, 0.32mm, 0.33mm, 0.34mm, or 0.35mm, etc. Optionally, the thread height of the third thread 31 is between 0.1mm and 0.2mm, such as 0.1mm, 0.12mm, 0.14mm, 0.16mm, 0.18mm, or 0.2mm, etc.

It should be noted that, regarding the thread height of the first thread 11, the thread height of the second thread 21 and the thread height of the third thread 31, those skilled in the art should be able to reasonably select and design the thread heights within the preferred ranges provided in the present application according to practical situations, and no particular limitation is made herein.

In the present embodiment, the first thread 11, the second thread 21, and the third thread 31 each adopt a double-thread structure. Due to the characteristic of the double-thread structure, when the dental implant 100 is implanted, one turn can advance by 2 pitches, thereby realizing rapid implantation in the implantation process and reducing the operation time of the operation.

Alternatively, the lead of the twin-lead thread arrangement is between 1.2mm and 2.0mm, such as 1.2mm, 1.4mm, 1.6mm, 1.8mm or 2.0mm, etc., and the pitch of the twin-lead thread arrangement is between 0.6mm and 1.0mm, such as 0.6mm, 0.7mm, 0.8mm, 0.9mm or 1.0mm, etc. Illustratively, in this embodiment, the lead of the duplex thread structure is 1.6mm and the pitch of the duplex thread structure is 0.8 mm.

It should be noted that the thread pitch of the double-thread structure is 0.6-1.0 mm, and the thread pitch is smaller, so that more threads are formed, a larger surface area can be generated, the area of the dental implant 100 combined with the bone is increased, and the success rate of the operation is greatly improved.

In this embodiment, the end face of the bottom 10 is a plane, and a plurality of spiral cutting grooves 12 are provided along the outer wall surface of the bottom 10, and the spiral cutting grooves 12 are spaced and uniformly arranged. The cross section of the bottom 10 is a plane, and the outer wall surface of the bottom 10 is provided with a plurality of spiral cutting grooves 12, so that the dental implant 100 has good self-tapping performance, thereby realizing up-down and left-right cutting performance in bones, further realizing immediate implantation in different sclerotins, and enabling different patients to wear teeth more quickly and recover the chewing function.

In the prior art, most of dental implants which can be implanted instantly adopt a cone-column structure of an imitated tooth root type, and because the conical section is arranged at the lower structure of the dental implant, the area of the lower part combined with bone tissue is reduced, and the spongy bone at the position is sufficient in blood supply and just needs a large enough area, the structure is not favorable for the stability after immediate implantation. In addition, some dental implants have a columnar structure, and although the osseointegration area is increased, the implant has problems that the operation process of the immediate implant operation is complicated and difficult to implant, and the ideal initial stability cannot be obtained.

Therefore, in the present embodiment, the dental implant 100 has a tapered structure, and the outer diameter of the tapered structure gradually increases along the direction from the bottom 10 to the neck 30, so as to avoid injuring the anatomical structure or causing the apical foramen, and simultaneously, increase the implantation torque and increase the initial stability.

In addition to traditional ceramic materials, carbon materials, metals and alloys, polymers, and composites, the dental implant 100 may also be made of titanium-based implant materials. Compared with the traditional stainless steel and cobalt-based alloy, titanium and the alloy thereof are more and more widely applied in the field of biological materials due to the characteristics of low density, low modulus, high strength, excellent biocompatibility, corrosion resistance and the like, and the titanium is abundant in earth crust (0.6 percent, 9 th site is arranged in all elements, and 4 th site is arranged next to iron, magnesium and aluminum in common metal elements), has the potential advantage of further development, and is an ideal biomedical engineering material with wide application prospect.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a dental implant, its characterized in that, is including the bottom, somatic part and the neck that connect gradually, the bottom the somatic part with the outer wall of neck is provided with first screw thread, second screw thread and third screw thread respectively, first screw thread the second screw thread with the third screw thread connects gradually, the thread height of first screw thread the thread height of second screw thread with the thread height of third screw thread is followed the bottom extremely neck direction reduces gradually.

2. Dental implant according to claim 1, wherein the first thread has a thread height between 0.45mm and 0.55 mm.

3. Dental implant according to claim 2, wherein the thread height of the second thread is between 0.3mm and 0.35 mm.

4. Dental implant according to claim 3, wherein the thread height of the third thread is between 0.1mm and 0.2 mm.

5. The dental implant of claim 1, wherein the first, second and third threads each employ a double-start thread configuration.

6. Dental implant according to claim 5, wherein the lead of the bifilar thread structure is between 1.2mm and 2.0mm and the pitch of the bifilar thread structure is between 0.6mm and 1.0 mm.

7. Dental implant according to claim 6, wherein the lead of the bifilar thread structure is 1.6mm and the pitch of the bifilar thread structure is 0.8 mm.

8. Dental implant according to claim 1, wherein the end surface of the bottom part is planar.

9. The dental implant of claim 1, wherein a plurality of spiral cutting grooves are provided along an outer wall surface of the bottom portion, and the spiral cutting grooves are spaced and uniformly arranged.

10. Dental implant according to any of claims 1-9, wherein the dental implant is of a conical configuration having an outer diameter which gradually increases in the direction from the base to the neck.