CN113180862A

CN113180862A - Dental implant device

Info

Publication number: CN113180862A
Application number: CN202110606823.9A
Authority: CN
Inventors: 董耀祖; 刘晓阳
Original assignee: Yantai Hangke Ruisi Medical Technology Co ltd
Current assignee: Yantai Hangke Ruisi Medical Technology Co ltd
Priority date: 2021-06-01
Filing date: 2021-06-01
Publication date: 2021-07-30

Abstract

The invention discloses a dental implant device, which comprises an implant matrix, wherein the implant matrix comprises a head part, a main body part and a tail part which are sequentially connected from top to bottom, the main body part comprises a main middle cone part connected with the head part and a secondary middle cone part connected with the tail part, the main body part is provided with a cutting groove, the outer surface of the main body part is provided with external threads, and the cutting groove is spirally distributed on the secondary middle cone part and/or the main middle cone part. The lower end of the external thread starts from the lower end position of the cutting groove. The cutting grooves are arranged in pairs, and the external threads are double threads. The secondary middle taper part and the primary middle taper part have different tapers. The head adopts an inverted cone structure with a thin upper part and a thick lower part. The head is provided with at least one circular groove. The invention has simple structure, convenient processing and good self-tapping incision cutting performance, can improve the initial stability of the implant, obtain the dual bone compression effect and achieve the aim of shortening the time of the dental implant operation.

Description

Dental implant device

Technical Field

The invention relates to a dental implant device, and belongs to the technical field of dental implantation.

Background

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 inventions 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.

Commercial titanium dental implants have then emerged, which form the basis for the development of dental implants, and whose basic structure is to divide the artificial tooth into three parts, namely an implant, an abutment and a crown, wherein the abutment has to be fixed to the implant by means of screws, and the crown is fixed to the abutment, usually by means of gluing.

By the last 90 s of the last century, titanium dental implant technology has become mature, and at the moment, not less than 250 varieties are in practical use in the world, the implant has been developed greatly in the aspects of materials, appearance, structure, surface, manufacturing precision, connection mode with a base station and the like, wherein the thread design is diversified and has various characteristics, meanwhile, the application is also improved continuously, and different repairing methods adapted to patients, such as long and short bridges, full teeth and the like, begin to appear.

Later, the dental implant technology continues to be developed, people prefer the edentulous restoration technology, the patient can experience the chewing function feeling which is almost the same as that of natural teeth, and the same or better aesthetic feeling as natural teeth, so the tooth-brushing liquid is favored by the beauty community, and after the new century since 2000, the structure and the repair method of the dental implant are further developed, people have deeper knowledge on the dental implant technology, and then the dental implant suitable for 'immediate planting', namely 'immediate planting', it has the advantages of keeping the soft and hard tissue shape of the extracted affected tooth to the maximum extent, improving the success rate of planting, reducing the waiting time of patients, repairing the functional and aesthetic defects caused by the tooth loss as soon as possible, this is conditional, of course, in that an immediate implant surgery can be performed when the patient is in immediate implant repair condition.

The world's famous dental implant manufacturer zeeman Straumann company, switzerland introduced BLT implants suitable for immediate implantation, which are tapered or root-like implants with self-tapping flutes, after which BLX implants were introduced, which were interpreted as having a shape and structure optimized for immediate implantation, also with a head-narrowing structure, tapered, thin and deep trapezoidal threads, with helical flutes distributed over the whole threaded zone, whereas "immediate implantation" means that the implant was directly implanted in the extraction socket immediately after the tooth was extracted, of course sometimes also requiring appropriate drilling to enlarge the implantation hole and taking into account the ease of controlling the implantation direction, obviously requiring that the shape and structure of the implant must be adapted to the implantation occasion and the operation method. For the self-tapping cutting groove on the implant, it can make the implantation more convenient, save labor, and reduce unnecessary bone compression caused by screwing/extruding, but there are problems, for example, that a gap formed after the implantation takes time to heal, and for example, there is no benefit to the jaw bone when the implant is stressed due to a complicated structure and more sharp corners formed, and further, a larger gap between the surface of the implant and the jaw bone formed due to the shape characteristics of the implant takes a longer time to heal after the implant is implanted.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a dental implant device which has simple structure, good self-tapping cutting-in and cutting performance and reliable initial stability of the dental implant.

The technical scheme for solving the technical problems is as follows: the utility model provides a dental implant device, includes the planting base member, the planting base member includes head, main part and the afterbody that top-down connects gradually, the main part include with the main well pyramis that the head is connected and with the inferior well pyramis that the afterbody is connected, be equipped with the cutting flutes on the main part, be equipped with the external screw thread on the surface of main part, the cutting flutes is the spiral and distributes in inferior pyramid and/or on the main well pyramis.

The invention has the beneficial effects that: the main body part is provided with cutting grooves in a spiral layout, the cutting grooves have good cutting performance, the spiral cutting grooves properly extend to the main middle cone, and meanwhile, the wedge angle at the starting point of the spiral cutting grooves, namely the blade edge of the 'shovel' at the starting point of the spiral cutting grooves, can be adjusted by the spiral angle, and the spiral angle is related to the axial moving distance of the spiral winding distance of the spiral cutting grooves when the spiral winding distance of the spiral cutting grooves rotates around the implant for one circle along the spiral, so that the good self-tapping cutting performance can be obtained. The bottom diameter of the external thread, namely the thread root, is distributed on a conical surface, namely the bottom diameter cone core, so that when the implant is screwed in an operation, the wall of a bone hole can be compressed, because the bone hole is relatively static during the implantation, the implant moves and is screwed in the bone hole, and because the thread bottom diameter cone core is continuously screwed in the bone hole, an advanced person is thin, a backward person is thick, the bone is pushed out and compressed by the bottom diameter cone core, and the initial stability of the implant after the implantation can be improved. The section radius is reduced from the lower edge of the head part to the large end of the tail cone, namely the section radius is tapered, the taper can also generate compression action on the bone hole when the bone implant is implanted, the compression principle of the taper is the same as that of the bottom diameter cone nucleus, therefore, the compression action on the bone hole is generated on two surfaces, namely the outer diameter surface of the external thread, or the outermost surface, and the bottom diameter of the external thread, namely the bottom diameter cone nucleus, namely, the invention can obtain double bone compression effects. In a word, the invention has simple structure, convenient processing and good self-tapping incision cutting performance, can improve the initial stability of the implant, obtains the dual bone compression effect and achieves the aim of shortening the time of the dental implant operation.

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

Further, the lower end of the external thread starts from the lower end position of the cutting groove.

The further scheme has the advantages that the cutting grooves are not randomly arranged on the outer surface of the planting substrate, the lower end starting points of the spiral cutting grooves are also the lower end starting points of the external threads, the spiral cutting grooves and the external threads can start synchronously, and the synchronous cutting grooves are formed like a scraper knife, so that the self-tapping cutting-in cutting performance is good.

Further, the cutting grooves are arranged in pairs, and the external thread is a double-thread.

The further scheme has the beneficial effect that the lower starting point of each spiral cutting groove is also the lower starting point of the corresponding external thread. The lower end of the cutting groove is synchronous with the lower starting point of the thread, each external thread and the corresponding cutting groove are of the structure, the cutting grooves which are arranged in pairs in the screwing-in process of the implant form the synchronous cutting grooves, the self-tapping cutting-in performance of the dental implant is further improved, and therefore the self-tapping performance of the implant is greatly improved.

Further, the double-thread comprises a first thread and a second thread, and the initial positions of the first thread and the second thread are distributed at an interval of 180 degrees along the circumference.

The double-thread has the advantages that the double-thread is two completely same threads, but the starting positions of the two threads are spaced 180 degrees along the circumferential direction, so that the adjacent threads are not the same, and the respective lead of the two threads, namely the axial moving distance when the threads rotate for one circle, is equal, so that the distance between the adjacent threads is half of the lead, which means that the advancing distance of one rotation of the implant, namely the lead of one thread, is doubled compared with the lead of a single thread, and the distance of one rotation of the threads is equal to 2 times of the thread pitch, so that the number of turns of the implant during the implantation operation is reduced by half, and the operation time is shortened.

Furthermore, the head part adopts an inverted cone structure with a thin upper part and a thick lower part.

The technical scheme has the advantages that the inverted cone is a cortical bone avoiding structure, in principle, cortical bone is difficult to compress, improper compression is one of important reasons for bone absorption, the shrinkage of the inverted cone is small, the diameter of the cylinder is reduced by 0.1-0.3 mm and then is the diameter of the end face of the head of the implant, and therefore the cortical bone can be properly prevented from being compressed, and the situation that gaps are too large after implantation is avoided.

Furthermore, the head is provided with at least one circular groove.

The advantage of using the above further solution is that the circular grooves increase the contact area between the head of the implant and the jaw bone, so that the stability of the implant after healing is enhanced, and in addition, they also contribute to the sealing of the head of the implant (also called "head"), i.e. the blocked path for the invasion of foreign substances or harmful microorganisms is lengthened, so that the sealing is improved, which is now known to be an important and major way for the invasion of foreign substances and microorganisms into the subgingival jaw bone, which is an important cause for peri-implantitis and bone resorption.

Further, arc grooves are formed in the outer surface of the main body portion between the adjacent external threads and/or the outer surface of the external threads.

The beneficial effects of adopting above-mentioned further scheme are that, the arc groove is shallow arc groove, and shallow arc groove can set up on the screw surface, also can set up on the surface of the main part between the screw thread, and even the arc groove can set up simultaneously on the surface of the lower part of main part and the external screw thread surface on main part upper portion, further increases the area of contact of implant and jaw, improves the long-term stability after the healing.

Further, the taper of the secondary middle taper part is different from that of the primary middle taper part.

The taper of the main middle cone part is smaller than that of the secondary middle cone part or the taper of the main middle cone part is larger than that of the secondary middle cone part. The taper of the main middle cone part is smaller than that of the secondary middle cone part, so that on one hand, the resistance is small, and the installation is convenient; on the other hand, if the main body part adopts a cone structure with consistent taper, the looseness is easy to occur, and the anti-loosening effect can be achieved by adopting two cones with different degrees.

Furthermore, the circular ring groove and the circular arc groove are both of circular arc structures, the circular arc radius of the circular arc structures is 0.1-0.3 mm, and the circular arc depth is 0.05-0.15 mm.

The beneficial effect of adopting the above further scheme is that 1-4 ring grooves can be arranged, and the ring grooves can increase the contact area between the head of the implant and the jaw bone, so that the stability of the implant after healing is enhanced, in addition, the ring grooves are the important and main ways for the invasion of foreign matters and microorganisms into the subgingival jaw bone, the invasion is the important reason for causing peri-implantitis and bone absorption, and can also contribute to the sealing performance of the head of the implant, namely the blocked route of the invasion of the foreign matters or harmful microorganisms is lengthened, so that the sealing performance can be improved.

Further, the main body part further comprises a cylindrical part connected with the head part, and the external thread extends upwards to the outer surface of the cylindrical part.

The beneficial effects of adopting above-mentioned further scheme are that, the processing of the main part of being convenient for on the one hand, on the other hand can suitably avoid the cortex bone to be compressed, is unlikely to cause the too big situation in here gap after the implantation again, and sealed effectual does benefit to the stability after the implant healing simultaneously.

Further, the tail part comprises a conical tail and a tail tip, the cone angle of the conical tail is 120-135 degrees, the tail tip is of a spherical structure, and the diameter of the spherical structure is 1-3 mm.

The beneficial effect who adopts above-mentioned further scheme is that, the shape of afterbody can cooperate better with drill bit point portion, makes 120 angles according to industry standard twist drill bit point portion more easily, can reduce the clearance between implant tail point and the drill bit and be equipped with the hole bottom like this, makes the time that this clearance was filled up in the growth of new bone shorten, especially the great occasion of bone density.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic plan sectional view of the present invention;

FIG. 3 is an enlarged view of the head of the implant according to the present invention;

FIG. 4 is a partially cut-away enlarged schematic view of the middle of the implant of the present invention;

FIG. 5 is a schematic view of the bottom diameter taper core of the external thread of the implant of the present invention;

fig. 6 is a schematic structural view of an implant base type for processing an implant body according to the present invention;

FIG. 7 is a schematic front view of the present invention;

FIG. 8 is a rear view of the present invention;

FIG. 9 is a sectional plan view of the present invention in use;

in the figure, 1, an implant body; 11. a head portion; 12. a cylindrical portion; 13. a primary mid-cone portion; 14. a secondary middle cone part; 15. a tail portion; 1a, a circular groove; 1b, external threads; 1c, arc grooves; 1d, cutting a groove; 1f, an external thread head; 1g, conical tail; 1h, tail tip; 1k, a bottom diameter cone core; 2. a base station; 3. a central screw; 4. planting body base type; 4a, back taper; 4b, a cylinder; 4c, a main middle cone; 4d, secondary middle cone; 4e, a tail cone; 4 f; a basal-type tail tip.

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 invention.

As shown in fig. 1 to 9, a dental implant device comprises an implant base body 1, wherein the implant base body 1 comprises a head part 11, a main body part and a tail part 15 which are sequentially connected from top to bottom, the main body part comprises a main middle cone part 13 connected with the head part and a secondary middle cone part 14 connected with the tail part, the main body part is provided with a cutting groove 1d, the outer surface of the main body part is provided with external threads 1b, and the cutting grooves are spirally distributed on the secondary middle cone part and/or the main middle cone part.

The lower end of the external thread starts from the lower end position of the cutting groove. The cutting grooves are not randomly arranged on the outer surface of the planting substrate, but the starting point of the lower end of the spiral cutting groove is just the starting point of the external thread 1d on the cone tail, namely the external thread head 1f, so that the tail cutting groove is a 'synchronous cutting groove', and the tail cutting groove is just like a 'scraper knife', has good cutting performance, and the self-tapping performance of the planting body is greatly improved due to the double-head thread and the structure that each external thread and the corresponding cutting groove are the same, so that the planting body is suitable for immediate planting and is also suitable for other application occasions.

The cutting grooves 1d are arranged in pairs, and the external thread is a double-thread. The double-thread comprises a first thread and a second thread, and the starting positions of the first thread and the second thread are distributed at an interval of 180 degrees along the circumference. The lower starting point of each spiral cutting groove is also the lower starting point of the corresponding external thread. The lower end of the cutting groove is synchronous with the lower starting point of the thread, each external thread and the corresponding cutting groove are of the structure, the cutting grooves which are arranged in pairs in the screwing-in process of the implant form the synchronous cutting grooves, the self-tapping cutting-in performance of the dental implant is further improved, and therefore the self-tapping performance of the implant is greatly improved.

The head 11 is in an inverted cone structure with a thin upper part and a thick lower part.

The head is provided with at least one circular groove 1 a.

And arc grooves 1c are formed on the outer surface of the main body part between the adjacent external threads and/or the outer surface of the external threads. The arc grooves are shallow arc grooves which can be arranged on the surfaces of the threads and also can be arranged on the surfaces of the main body parts between the threads, even the arc grooves can be arranged on the surfaces of the lower parts of the main body parts and the surfaces of the external threads on the upper parts of the main body parts, and the specific positions of the arc grooves can be selected according to actual needs; further increasing the contact area of the implant and the jaw bone and improving the long-term stability after healing.

The circular groove 1a and the circular groove 1c are both circular arc structures, the circular arc radius of the circular arc structures is 0.1-0.3 mm, and the circular arc depth is 0.05-0.15 mm.

The secondary medium taper portion 14 has a different taper than the primary medium taper portion 13. The taper of the primary medium taper portion is smaller than that of the secondary medium taper portion. On one hand, the resistance is small, and the installation is convenient; on the other hand, if the main body part adopts a cone structure with consistent taper, the looseness is easy to occur, and the anti-loosening effect can be achieved by adopting two cones with different degrees.

The tooth shape of the external thread 1b is a symmetrical trapezoidal structure, and the thickness of the external thread is gradually reduced from top to bottom.

The body portion further comprises a cylindrical portion 12 connected to the head portion, the external thread extending up to the outer surface of the cylindrical portion. On the one hand, the processing of the main body part is convenient, on the other hand, the compression of cortical bone can be properly avoided, the situation that gaps are too large after the implant is implanted is avoided, the sealing effect is good, and meanwhile, the stability after the implant is healed is facilitated.

The tail part comprises a conical tail 1g and a tail tip 1h, the cone angle of the conical tail is 120-135 degrees, the tail tip is of a spherical structure, and the diameter of the spherical structure is 1-3 mm.

The spiral cutting groove has an angular cross section and is a synchronous cutting groove, has the same cutting performance, and is properly extended to the main middle cone part, meanwhile, the wedge angle at the starting point of the spiral cutting groove, namely the sharp angle of the section of the blade of the shovel, can be adjusted by the spiral angle, and the spiral angle is related to the spiral winding distance of the spiral cutting groove, namely the axial moving distance when the spiral cutting groove rotates around the spiral implant for one circle, so that the self-tapping cutting performance can be obtained. The spiral cutting groove is arranged on the external thread, the outline of the implant body 1 is formed by connecting a plurality of sections of revolution bodies, the implant body is processed by adopting an implant base form, the implant base form comprises an inverted cone 4a, a cylinder 4b, a main middle cone 4c, a secondary middle cone 4d, a tail cone 4e and a base form tail tip 4f, wherein an annular groove 1a is processed on the inverted cone 4a to form the head of the implant body, continuous external threads 1b are processed on other parts, in addition, the bottom diameters of thread teeth are distributed on a bottom diameter cone core 1k, the total number of the two external threads is 180 degrees, shallow arc grooves 1c are further arranged on the bottom diameter cone core of the external thread teeth, and as shown in figure 8, the abutment 2 is connected to the implant body 1 through a central screw 3. The tooth form of external screw thread 1b is symmetrical trapezoidal, begins to extend and run through the tail cone to lower part tail cone 4e from the cylinder 4b upper edge of implant base type, and the bottom diameter of the external screw thread distributes on bottom diameter awl core 1k in addition, and two external screw threads distribute the interval 180 degrees along the circumference on the implant surface, and simultaneously, still process shallow circular arc groove 1c on the bottom diameter awl core of external screw thread tooth, and this shallow circular arc groove can further increase the area of contact of implant and jaw, improves the long-term stability after healing.

The afterbody of implant body 1 comprises cone tail 1g and tail point 1h, and the tail point is spheroidal partly, and both link together with tangent relation each other, and tail point spheroid diameter is between 1-3 millimeters, and this kind of afterbody shape can cooperate better with the drill bit point portion that industry provided, because according to the industrial standard, twist drill bit point portion makes 120 angles more easily, can reduce the implant tail point and the drill bit and be equipped with the clearance between the hole bottom of the hole like this, makes the time that this clearance was filled up in to the new bone growth shorten, especially the great occasion of bone density. The shrinkage of the inverted cone 4a is very small, namely the diameter of the cylinder 4b is reduced by 0.1-0.3 mm to be the diameter of the head end surface of the implant, so that the cortical bone can be properly prevented from being compressed, and the situation that the gap is too large after the implantation is avoided. The implant 1 is covered with an external thread 1b, which is a "double thread", i.e. two identical threads but spaced 180 degrees apart circumferentially, on the other surface than the back taper of the head, so that the adjacent threads are not identical, and the respective leads of the two threads, i.e. the axial displacement distance when the threads are rotated one turn, are equal, so that the distance between the adjacent threads is half of the lead, which means that the lead of one thread when the implant is rotated one turn, is doubled compared to a single thread, which reduces the number of turns of the implant when implanted by one half, thereby shortening the operation time, and the base diameter of the external thread 1b, i.e. the thread roots, are distributed on a conical surface, i.e. the base diameter taper core 1k, so that, when the implant is screwed in during operation, it will have a compression effect on the bone hole wall, because, when implanted, in contrast, the bone hole is stationary, and the implant moves and is screwed into the bone hole, so that since the threaded bottom diameter conical nucleus 1k is continuously screwed into the bone hole, the advanced one is thin and the advanced one is thick, the bone is pushed out and compressed by the bottom diameter conical nucleus, which can improve the initial stability of the implant after implantation.

FIG. 6 shows an implant base type 4 for processing an implant, that is, the appearance structure characteristics of the implant 1 after hiding a circular groove 1a, an external thread 1b, a shallow circular groove 1c, a tail cutting groove 1d and a middle cutting groove 1j, which determine the appearance profile characteristics of the implant, including six sections of revolution bodies, namely an inverted cone 4a, a cylinder 4b, a main middle cone 4c, a secondary middle cone 4d, a tail cone 4e and a base type tail tip 4f, wherein the implant base type is the first appearance to be processed in the manufacturing process, and then the circular groove 1a, the external thread 1b, the shallow circular groove 1c and the cutting groove 1d are processed thereon, after that the appearance profile of the implant base type is still maintained "intermittently", but the base type tail tip 4f is completely maintained, so that the base type tail tip 4f is completely the same as the implant circular cone tail 1g, and thus the appearance profile of the implant is still consistent with the appearance profile of the implant base type, one feature of this profile is that the cross-sectional radius is reduced from the lower edge of the cylinder 4b to the larger end of the tail cone 4e, i.e. it is tapered, which also compresses the bone hole when implanted, according to the same principle as the base diameter cone core 1k, so that a double bone compression effect is obtained on both sides of the bone hole, i.e. the implant outer diameter is the outer diameter surface of the external thread 1b, or the outermost side, and the base diameter of the external thread is the base diameter cone core 1 k.

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

Claims

1. The utility model provides a dental implant device, includes the planting base member, its characterized in that, the planting base member includes head, main part and the afterbody that top-down connects gradually, the main part include with the main well pyramis that the head is connected and with the inferior well pyramis that the afterbody is connected, be equipped with the cutting flutes on the main part, be equipped with the external screw thread on the surface of main part, the cutting flutes is the spiral and distributes in inferior well pyramis and/or on the main well pyramis.

2. The dental implant device of claim 1, wherein the lower end of the external thread starts at a lower end position of the cutting flute.

3. The dental implant device of claim 1 or 2, wherein the cutting flutes are arranged in pairs and the external thread is a double thread.

4. The dental implant device of claim 1 or 2, wherein the secondary median taper portion has a different taper than the primary median taper portion.

5. The dental implant device of claim 1 or 2, wherein the head portion has an inverted cone structure with a thin upper portion and a thick lower portion.

6. A dental implant device according to claim 1 or 2, characterised in that the head portion is provided with at least one circumferential groove.

7. The dental implant device of claim 6, wherein a circular arc groove is provided on the outer surface of the main body portion between adjacent external threads and/or on the outer surface of the external threads.

8. The dental implant device of claim 7, wherein the circumferential groove and the arc groove are arc structures, the arc structures have an arc radius of 0.1-0.3 mm and an arc depth of 0.05-0.15 mm.

9. The dental implant device of claim 4, wherein the body portion further includes a cylindrical portion connected to the head portion, the external thread extending up to an outer surface of the cylindrical portion.

10. The dental implant device of claim 1 or 2, wherein the tail portion comprises a conical tail and a tip, the conical angle of the conical tail is 120-135 degrees, the tip is a spherical structure, and the diameter of the spherical structure is 1-3 mm.