CN212066906U

CN212066906U - Wedge type expansion tooth planting device with expansion block

Info

Publication number: CN212066906U
Application number: CN201920904137.8U
Authority: CN
Inventors: 毛志红; 刘帆
Original assignee: Wuyi University
Current assignee: Wuyi University
Priority date: 2019-06-17
Filing date: 2019-06-17
Publication date: 2020-12-04
Anticipated expiration: 2029-06-17

Abstract

The utility model relates to a wedge type expansion tooth planting device with an expansion block, which comprises a threaded base station, a planting body, an adjusting screw and an expansion block, wherein an expansion taper hole running through the lower end is arranged in the planting body, and a screw mounting hole communicated with the expansion taper hole is also arranged in the planting body; the expansion cutting groove and the micro cutting groove are distributed from the lower end of the implant to the neck; adjusting screw is connected with the screw base station and inserts in the screw rod mounting hole of implant, and the expansion piece passes through in the expansion taper hole of adjusting screw's the embedding implant of adjusting screw, the utility model discloses simple structure, it is effectual to plant, mutually supports through expansion piece and adjusting screw, thereby makes it reach the effect of inflation implant along implant center pin rebound to improve implant and bone contact area through miniature grooving, improve second phase stability, can effectively reduce the planting failure rate, improve planting efficiency, on the other hand can improve the frictional force of implant and bone, prevents to plant the implant of initial stage not hard up.

Description

Wedge type expansion tooth planting device with expansion block

Technical Field

The utility model belongs to the technical field of the medical instrument technique and specifically relates to a take wedge type of inflation type tooth planting device of inflation piece.

Background

The dental Implant technology is gradually developed and matured from the 90 th of the 20 th century, the Implant restoration is a common dental restoration technology, generally, a dental Implant (also called an artificial tooth root) is made of materials with good biocompatibility, such as titanium or titanium alloy and the like, is implanted into a jawbone part of an edentulous tooth of a patient to replace a natural tooth root and stably support an upper dental crown. The implant has the advantages of beautiful appearance, nature and vividness, and the cleaning of the implant is different from that of the traditional inlay tooth in nature, the traditional inlay tooth cleaning needs to be disassembled for cleaning, and the cleaning mode of the implant tooth is the same as that of the real tooth. And the traditional porcelain restoration technology may need to move nearby adjacent teeth, and belongs to destructive restoration, so the durability and the stability of the planting restoration are far greater than those of the porcelain restoration.

For the anterior dental implant implantation restoration, after the dental implant body is installed, the zirconia base station can be installed on the upper part of the dental implant body, and the zirconia ceramic base station has no toxic damage to surrounding bone tissues, does not have metallic colors such as titanium alloy and the like, and has better aesthetic effect.

The initial stability of the implant is not only related to the length of the implant, the design of the tooth shape, the design of the appearance and the type of the implant, but also more importantly related to the bone conditions, the bone can be classified into I-IV classes according to the Lekholm and Zarb bone classification, the bone defects in III and IV jaws with poor bone conditions and clinically occurred bone defects can not achieve a good planting effect by only changing the length, width and other designs of the implant, and at the moment, the bone extrusion technology is clinically adopted to improve the bone conditions; or adopts a guided bone regeneration technology to improve the planting success rate. However, bone compression techniques are somewhat risky. In the daily chewing process, chewing force is transmitted from top to bottom and sequentially passes through the dental crown, the abutment, the central screw and the implant, and research and investigation find that the stress shielding phenomenon is easy to occur due to the fact that the difference of the elastic modulus of the implant and the elastic modulus of surrounding bone tissues is large, namely, the implant material with large elastic modulus bears large stress, the surrounding bone tissues with small elastic modulus bear small stress, and the contact part of the neck of the implant and the surrounding bone tissues bears the maximum stress. After a period of time, the bone tissue around the neck of the implant gradually shrinks due to failure of exercise, so that the implant becomes loose, and then the implant becomes invalid.

Disclosure of Invention

The utility model provides a not enough to prior art, the utility model provides a take wedge type of inflation type tooth planting device of inflation piece to improve the stability of planting the initial stage of planting body and be used for the planting operation of special sclerotin such as sclerotin defect. The utility model is used for the dental implant implantation operation of using the shaping drill, then the operation of the expansion implant is carried out in the screw in the bone slotted hole that has already been shaped.

The technical scheme of the utility model is that: a wedge type expansion tooth planting device with an expansion block comprises a threaded base platform, a planting body, an adjusting screw and an expansion block, wherein an expansion taper hole penetrating through the lower end is formed in the planting body; a plurality of expansion cutting grooves which are distributed along the vertical direction and are communicated with the expansion taper holes and a plurality of micro cutting grooves which form a certain inclination angle with the horizontal direction are also formed from the lower end of the implant to the neck;

adjusting screw and screw thread base station be connected and insert in the screw rod mounting hole of implant, adjusting screw on be provided with adjusting screw, the expansion block pass through adjusting screw's adjusting screw embedding implant's inflation taper hole in, expansion block and adjusting screw mutually support, thereby make its effect along implant center pin rebound reach the inflation implant to improve implant and bone contact area through miniature grooving, improve second stage stability, can effectively reduce the planting failure rate, improve planting efficiency, on the other hand can improve the frictional force of implant and bone, prevent that the implant of planting initial stage is not hard up.

Further, the length of the dental implant device is 12-14mm, and the implantation depth is 8-10 mm.

Furthermore, the length of the threaded base station is 10-12mm, an inner hexagonal groove is formed in the threaded base station, tools can be conveniently mounted and dismounted through the groove, and base station external threads are arranged at the bottom end of the threaded base station.

Furthermore, the shape of the implant is cylindrical or conical, and the outer side wall of the implant is also provided with knurls.

Furthermore, the interior of the implant is also provided with an abutment internal thread which is used for being connected with an abutment external thread at the lower end of the threaded abutment.

Furthermore, the top of planting still be provided with one and be used for threaded base station matched with morse tapering hole, and the implant in morse tapering hole outside on still be provided with the micro thread groove, through micro thread groove and cortical bone combination, increase the area of contact that implant and cortical bone combination, improved the stability of implant.

Further, the expansion cutting grooves are symmetrically formed along the center line of the implant, the width of each expansion cutting groove is 0.4mm, a circular groove hole for transition is further formed in the top end of each expansion cutting groove, the diameter of each circular groove hole is 1.2mm, and stress concentration at the transition position is reduced through the circular groove holes.

Furthermore, the contact surface of the adjusting screw rod and the implant is in a certain Morse taper, so that the sealing performance of the implant is further improved, and the problem that bacteria invade into bone substances in the initial stage and the second stage of neutral period to cause the failure of the planting is avoided.

Furthermore, the expansion block is cylindrical, a plurality of bosses distributed in the vertical direction are arranged on the outer side wall of the expansion block, the axial rotation of the expansion block is limited through the bosses, and an internal thread through hole matched with the adjusting thread is formed in the inner side of the expansion block.

The utility model has the advantages that:

1. the utility model has simple structure and strong practicability, and the utility model can move upwards along the central axis of the implant by the mutual cooperation of the expansion block and the adjusting screw rod, thereby achieving the effect of expanding the implant;

2. the utility model improves the contact area between the implant and the bone through the micro grooving, improves the secondary stability, can effectively reduce the failure rate of the planting, improves the planting efficiency, can improve the friction force between the implant and the bone on the other hand, and prevents the implant in the initial stage of the planting from loosening;

3. the utility model designs the small Morse taper at the joint of the adjusting screw and the implant, thereby further improving the sealing performance of the implant and avoiding the bacteria from invading into the sclerotin in the neutral period of the initial stage and the second stage, thereby causing the failure of the planting;

4. the utility model discloses an implant depth is 8-10mm, has guaranteed the stability of planting to combine with the cortex bone through the micro-thread groove on implant top, increase the area of contact that implant and cortex bone combined, improved the stability of implant, further improved the planting effect.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of a threaded abutment according to the present invention;

fig. 3 is a schematic structural view of the implant of the present invention;

fig. 4 is a schematic cross-sectional view of the implant of the present invention;

FIG. 5 is a schematic structural view of the adjusting screw of the present invention;

FIG. 6 is a schematic structural view of the expansion block of the present invention;

in the figure, 1-a threaded base platform, 2-an implant, 3-an adjusting screw rod, 4-an expansion block, 5-an expansion taper hole, 6-a screw rod installation hole, 7-an expansion cutting groove, 8-a micro cutting groove, 9-a Morse taper hole, 10-a micro thread groove, 11-a base platform internal thread, 12-a base platform external thread, 13-an adjusting thread, 14-a boss, 15-an internal thread through hole and 16-a circular groove hole.

Detailed Description

The following description of the embodiments of the present invention will be made with reference to the accompanying drawings:

as shown in figure 1, the wedge type expansion type dental implant device with the expansion block comprises a threaded abutment 1, an implant 2, an adjusting screw rod 3 and an expansion block 4, wherein the dental implant device is 12-14mm in length and 8-10mm in implantation depth.

As shown in fig. 2, the length of the threaded base 1 is 10-12mm, a hexagonal socket is arranged inside the threaded base 1, the threaded base 1 is convenient for tool installation and removal through the socket, and base external threads 12 are arranged at the bottom end of the threaded base 1.

As shown in fig. 3 and 4, the implant 2 has a cylindrical or conical shape, and has a pattern such as knurling on the outer surface thereof. An expansion taper hole 5 penetrating through the lower end is formed in the implant 2, and a screw mounting hole 6 communicated with the expansion taper hole 5 is formed in the implant 2; a plurality of expansion cutting grooves 7 which are distributed along the vertical direction and are communicated with the expansion taper holes 5 and a plurality of micro cutting grooves 8 which form a certain inclination angle with the horizontal direction are also formed from the lower end of the implant 2 to the neck part; in this embodiment, the number of the expansion incision grooves 7 is 4, the 4 expansion incision grooves 7 are symmetrically distributed along the center line of the implant 2, the width of each expansion incision groove 7 is 0.4mm, a circular groove hole 16 for transition is further formed at the top end of each expansion incision groove 7, the diameter of each circular groove hole 16 is 1.2mm, and stress concentration at the transition position is reduced by the circular groove hole 16. The interior of the implant 2 is also provided with a base station internal thread 11 which is connected with a base station external thread 12 at the lower end of the threaded base station 1, and the base station internal thread 11 is positioned at the upper end of the screw mounting hole 6. Simultaneously, the top of planting 2 still be provided with one and be used for threaded base station 1 matched with morse tapering hole 9, and the planting body 2 in morse tapering hole 9 outside on still be provided with little thread groove 10, through little thread groove 10 and cortical bone combination, increase the area of contact that planting body 2 and cortical bone combination, improved planting body 2's stability.

Adjusting screw 3 be connected with threaded base station 1 to in inserting the screw rod mounting hole 6 of planting body 2 through the top of planting body 2, as shown in fig. 5, adjusting screw 3 on be provided with adjusting thread 13, as shown in fig. 6, the shape of inflation piece 4 be cylindrical, and inflation piece 4 lateral wall on be provided with a plurality of bosss 14 that distribute along vertical direction, restrict the axial of inflation piece 4 through boss 14 and rotate, inflation piece 4 inboard be for being used for with adjusting thread 13 matched with internal thread through-hole 15. Expansion block 4 in the expansion taper hole 5 of the regulation screw thread 13 embedding planting body 2 through adjusting screw 3, through expansion block 4 and adjusting screw 3 mutually support, thereby make it along 2 center pin rebound of planting body reach the effect of expansion planting body 2 to improve planting body 2 and bone contact area through the miniature grooving 8 on planting body surface, improve second phase stability, can effectively reduce the planting failure rate, improve planting efficiency, on the other hand can improve the frictional force of planting body and bone, prevent to plant the planting body in the initial stage not hard up. In addition, in order to prevent bacteria from invading and influence the success rate of planting, the contact surface of the adjusting screw rod 3 and the implant 2 is designed into a small Morse taper, so that the sealing performance of the implant 2 is further improved, and the condition that bacteria invade into bone in the neutral period of the initial stage and the second stage to cause the failure of planting is avoided.

The design of this embodiment expansion block 4 makes implant back tooth planting device have bigger bone extrusion force, the stability in initial stage has been increased, the loose rate of 2 implants after having reduced the operation, before the operation, need pack into adjusting screw 3 to the contact position through the screw rod mounting hole 6 of 2 implants earlier, then pack into expansion block 4, through adjusting

screw

3, 2 implants and 4 expansion block's cooperation with expansion block 4 location to with 2 inner cone surfaces of implant cooperate, prepare for subsequent planting operation.

In a normal operation, after tooth extraction, a ball drill is used for positioning, a front drill, a forming drill and other tools are used for preparing step by step, and finally the planting device is screwed into a formed jawbone hole.

The foregoing embodiments and description have been provided to illustrate the principles and preferred embodiments of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed.

Claims

1. The utility model provides a take wedge type of expanding tight type tooth planting device of inflation piece which characterized in that: the device comprises a base station with threads, an implant, an adjusting screw and an expansion block, wherein an expansion taper hole penetrating through the lower end is formed in the implant, and a screw mounting hole communicated with the expansion taper hole is formed in the implant; a plurality of expansion cutting grooves which are distributed along the vertical direction and are communicated with the expansion taper holes and a plurality of micro cutting grooves which form a certain inclination angle with the horizontal direction are also formed from the lower end of the implant to the neck;

the adjusting screw is connected with the threaded base and inserted into the screw mounting hole of the implant, the adjusting screw is provided with an adjusting thread, the expansion block is embedded into the expansion taper hole of the implant through the adjusting thread of the adjusting screw, and the expansion block and the adjusting screw are matched with each other to move upwards along the central axis of the implant so as to achieve the effect of expanding the implant.

2. The tapered wedge expansion type dental implant device with the expansion block as claimed in claim 1, wherein: the dental implant device is 12-14mm long and 8-10mm deep.

3. The tapered wedge expansion type dental implant device with the expansion block as claimed in claim 1, wherein: the length of the threaded base station is 10-12mm, an inner hexagonal groove is formed in the threaded base station, and base station external threads are arranged at the bottom end of the threaded base station.

4. The tapered wedge expansion type dental implant device with the expansion block as claimed in claim 1, wherein: the implant is cylindrical or conical in shape.

5. The tapered wedge expansion type dental implant device with the expansion block as claimed in claim 4, wherein: the implant is characterized in that a base station internal thread used for being connected with a base station external thread at the lower end of the threaded base station is further arranged in the implant.

6. The tapered wedge expansion type dental implant device with the expansion block as claimed in claim 5, wherein: the top end of the planting is also provided with a Morse taper hole matched with the threaded base station, and the implant body outside the Morse taper hole is also provided with a micro thread groove.

7. The tapered wedge expansion type dental implant device with the expansion block as claimed in claim 1, wherein: the expansion cutting groove is symmetrically formed along the center line of the implant, the width of the expansion cutting groove is 0.4mm, a circular groove hole for transition is further formed in the top end of the expansion cutting groove, and the diameter of the circular groove hole is 1.2 mm.

8. The tapered wedge expansion type dental implant device with the expansion block as claimed in claim 1, wherein: the contact surface of the adjusting screw rod and the implant is in Morse taper.

9. The tapered wedge expansion type dental implant device with the expansion block as claimed in claim 1, wherein: the expansion block is cylindrical, a plurality of bosses distributed in the vertical direction are arranged on the outer side wall of the expansion block, and an internal thread through hole matched with the adjusting thread is formed in the inner side of the expansion block.