TW201322963A - Dental implant retaining and positioning system - Google Patents

Abstract

The present invention relates to a dental implant retaining and positioning system, which comprises: an implant, an abutment, a retaining bolt and a withdrawal bolt, wherein the tapered joining end of the abutment is inserted into the tapered slot of the implant. The retaining bolt is penetrated through the through hole of the abutment. The screw-stop end of the retaining bolt is inserted into the screw-stop slot of the implant, and the locking head of the retaining bolt is engaged with the locking slot of the abutment. Moreover, while detaching the abutment, after removing the retaining bolt, the external threads of the withdrawal bolt is screwed into the internal threads within the through hole of the abutment, and the tail of the withdrawal bolt is pushed against the tapered slot to withdraw the abutment from the tapered slot. Thus, the present invention may securely join the abutment with the implant to completely inhibit the rotation of the abutment, and may effectively prevent the weakening of the strength of the implant neck due to the elimination of threaded slot of the implant, and may also easily and conveniently detach the abutment.

Description

Implant fixed positioning system

The present invention relates to a dental implant positioning system, and more particularly to an assembly and disassembly assembly suitable for use in abutment body including a dental implant process.

At present, the existing dental implant process is to implant the implant (alplant) into the alveolar bone, then set the abutment to the implant, and finally the prosthetic crown. Installed on the support body.

In the conventional dental implant technology, there are three combinations of the abutment body and the implant. The first type is abutment body lock type. As shown in FIG. 1A, the abutment body 91 is directly attached to the implant body 90. However, such a fixing method is liable to cause damage or abrasion of the thread 901 on the implant 90 or the thread 911 on the abutment body 91 due to excessive force or uneven stress, and cannot be used. Moreover, it is also easy to loosen the support body or break the thread due to insufficient locking force or long-term use. In addition, since the implant 90 itself is provided with the thread 901 uniformly inside and outside, the wall thickness of the implant 90 is relatively thin, especially in the neck region, and the region where the wall thickness is thin is weak, and the breakage is likely to occur.

In addition, please refer to FIG. 1B, FIG. 1C, and FIG. 1D, which shows the manner of fixing the second abutment body, which is generally referred to as a locking taper. As shown in FIG. 1B, the groove 920 of the implant body 92 is a tapered groove, and the insertion end 930 of the abutment body 93 is a tapered rod, and the insertion end 930 of the abutment body 93 is inserted into the implant. The groove 920 of 92 is fixed. In addition, as shown in FIG. 1C, it is also a locking taper, but a hexagonal fixed end 931 is added to the lower end of the abutment body 93, and a hexagonal groove 921 is added to the bottom end of the implant 92. Among them, the abutment body 93 is inserted into the implant body 92, and the hexagonal fixed end 931 is inserted into the hexagonal groove 921, thereby preventing rotation. In addition, FIG. 1D shows a locking taper of another abutment body 97, and the main difference from FIG. 1C is that the hexagonal fixed end 971 of the abutment body 97 is located in the conical lock. At the head end of the residence 972.

However, the locking taper is fixed in such a way that the bond between the implant 92 and the abutment body 93 is relatively tight. However, if the abutment body 93 needs to be removed after the combination, if the denture is adjusted, the bite is adjusted, or the braces are damaged, it needs to be removed for repair, which requires considerable force to be removed, which not only causes the dentist to Troubled, but also made the patient feel quite uncomfortable.

In addition, referring to FIG. 1E, it is shown that the third abutment body is fixed by a Morse taper plus a screw lock, which is a combination of the above two fixing methods. The slot 940 of the implant 94 is a tapered slot, and the insertion end 950 of the abutment body 95 is a tapered rod, and the inclination taper of the two is generally 8 to 11 degrees, and is additionally attached. A screw 96 is inserted from the abutment body 95 through the lock to the implant 94. However, this type of fixing still cannot completely suppress the rotation of the abutment body 95, and the screw 96 may still be loosened or disintegrated for a long time. Similarly, the implant 94 of this type is also internally threaded, so that the wall thickness of the implant 94 is thin, especially in the neck region, and the thinner wall region is weaker and prone to breakage. .

The main object of the present invention is to provide a dental implant positioning system, wherein the abutment body and the implant can be tightly coupled, and the insertion of the fixing bolt is fixed, in addition to strengthening the fastening property of the abutment body and the implant, It can prevent the rotation of the abutment body from happening. In addition, the abutment body can be easily withdrawn from the implant by replacing the fixation plug with the withdrawal plug and rotating the withdrawal plug. Accordingly, the present invention can achieve a stable combination of the abutment body and the implant, and can completely suppress the rotation of the abutment body; and the abutment body can be easily and conveniently removed.

To achieve the above object, the present invention is a dental implant positioning system comprising: an implant, a table body, a fixing bolt, and an exit plug. The implant includes a fixed end and a joint end, and the fixed end and the joint end are respectively disposed at the corresponding ends of the implant. The outer surface of the implant is provided with a spiral groove and extends to the fixed end, and the end surface of the joint end defines a tapered slot, and the bottom end of the tapered slot is recessed with a stop groove. In addition, the abutment body includes a conical engagement end, a through hole, and a fixed end of the tooth body, wherein the conical joint end and the fixed end of the tooth body are respectively disposed at two corresponding ends of the abutment body, and the through hole system The end surface of the tapered joint end and the fixed end of the tooth body is disposed, and the through hole is provided with an internal thread, and the fixed end of the tooth body is provided with a locking groove. In addition, the fixing bolt includes a locking end and a locking head, and the locking end and the locking head are respectively disposed at the corresponding ends of the fixing bolt. Moreover, the exit plug includes a head end and a tail end, and the head end and the tail end are respectively disposed at corresponding ends of the exit plug, and the exit plug is provided with an external thread.

Wherein, the conical joint end of the abutment body is inserted into the conical slot of the implant body, the fixing bolt is threaded through the through hole of the abutment body, and the rotation end of the fixing bolt is inserted into the rotation groove of the implant body And the locking head of the fixing bolt is embedded in the locking groove of the abutment body. When the abutment body is to be disassembled, after the fixing bolt is removed, the external thread of the bolt threaded into the through hole of the abutment body is withdrawn, and the end end of the plug is abutted against the tapered slot, so that the abutment body exits the cone Shaped slot.

Preferably, when the abutment body is to be disassembled, the tail end of the withdrawal pin can be placed against the rotation groove of the implant body, and then the rotation of the extension pin is continued to cause the abutment body to exit the tapered slot. That is to say, the end end of the exit pin adopts a circular convex end of a small diameter, which can be inserted into the rotation stop groove in a loose fit manner and can be freely rotated. Accordingly, the abutment body can be easily and conveniently withdrawn by rotating the exit pin.

Furthermore, the internal thread of the abutment body of the present invention may be disposed in the through hole adjacent to the locking groove, and the external thread of the exit pin may be disposed at the abutting end of the exit pin. According to this, the exit pin can be easily inserted into the through hole of the abutment body, and can be easily rotated to exit the abutment body. In addition, the rotation groove of the implant of the present invention may be a hexagonal groove, and the rotation end of the fixing bolt is a hexagonal convex end. Of course, not limited to hexagons, other equivalent structures or geometric polygons that prevent rotation are acceptable. In addition, the abutment body of the present invention can be a six-lobed groove, and the locking head of the fixing bolt can be a six-lobed head end. Similarly, other than the six-lobed shape, other equivalent structures or geometric polygons that prevent rotation may be used.

Furthermore, the through hole of the abutment body of the present invention may be a conical hole and its aperture at the fixed end of the tooth body may be larger than the aperture at the conical engagement end; and the fixing pin may be a tapered rod and located at The rod diameter of the locking head can be larger than the rod diameter at the end of the rotation. Accordingly, in addition to utilizing a locking taper of the tapered slot of the implant and the tapered engaging end of the abutment body, the present invention can be formed by using the conical through hole of the abutment body and the tapered fixing bolt. The other taper locks to form a double locking taper for excellent fastening. Similarly, the exit plug can also be a tapered plug with a bolt diameter at the head end that is larger than the bolt diameter at the trailing end to fit the conical through hole. The inclination angle of the through hole, the inclination angle of the exit pin, the inclination angle of the tapered slot, and the inclination angle of the tapered slot may be 1 degree to 2 degrees, and the sealing effect may be achieved in addition to the fastening effect. The effect of the bacteria. Moreover, the thread of the withdrawal plug of the present invention is disposed in the abutment body, and the implant itself has no thread groove, thereby avoiding weakening the strength of the implant itself.

Please refer to FIG. 2 and FIG. 3A to FIG. 3D, FIG. 2 is an exploded view of a preferred embodiment of the dental implant positioning system of the present invention, and FIG. 3A is a cross-sectional view of the abutment body according to a preferred embodiment of the present invention. 3B is a cross-sectional view of a preferred embodiment of the present invention, FIG. 3C is a front view of a fixing plug according to a preferred embodiment of the present invention, and FIG. 3D is a partial cross-sectional view of the ejecting plug of a preferred embodiment of the present invention.

As shown in the figure, the dental implant positioning system of the present embodiment mainly includes: an implant 2, a table 3, a fixing bolt 4, and an exit plug 5. The implant 2 includes a fixed end 21 and an engaging end 22, and the fixed end 21 and the engaging end 22 are respectively disposed at two corresponding ends of the implant 2. The outer surface of the implant 2 is provided with a spiral groove 20 and extends to the fixed end 21, which is mainly used for fixing to the alveolar bone (not shown). The end surface 220 of the joint end 22 defines a tapered slot 221, and a bottom end is recessed with a stop groove 222. In the present embodiment, the inclination angle of the tapered slot 221 is within 2 degrees, and the rotation stop groove 222 is a hexagonal groove.

In addition, the abutment body 3 includes a tapered engagement end 31, a through hole 32, and a tooth fixed end 33. The tapered engaging end 31 and the fixed end 33 of the tooth are respectively disposed at two corresponding ends of the abutment body 3, and the through hole 32 extends through the end faces 310, 330 of the tapered engaging end 31 and the fixed end 33 of the tooth. In the present embodiment, the through hole 32 is a tapered hole and the hole diameter of the fixed end 33 of the tooth is larger than the hole diameter of the tapered engaging end 31, and the angle of inclination of the through hole 32 and the tapered engaging end 31 are both Within 2 degrees. In addition, the internal thread 321 is disposed in the through hole 32, and the tooth fixing end 33 is provided with a locking groove 331. The internal thread 321 is disposed in the through hole 32 adjacent to the locking groove 331, and the internal thread 321 is an inner portion. The female thread, that is, the internal thread 321 is recessed in the inner wall of the through hole 32. In addition, the locking groove 331 is a six-lobed groove.

Furthermore, the fixing bolt 4 includes a locking end 41 and a locking head 42 , and the locking end 41 and the locking head 42 are respectively disposed at the corresponding ends of the fixing bolts 4 . Wherein, the fixing bolt 4 is a tapered rod and the rod diameter of the locking head 42 is larger than the rod diameter of the locking end 41, and the inclination angle of the tapered rod is 1 degree to 2 degrees. In addition, in the embodiment, the locking end 41 of the fixing bolt 4 is a hexagonal convex end, and the locking head 42 of the fixing bolt 4 is a six-lobed head end, wherein the rotation end 41 is set to a hexagonal shape and a card. The stop 42 is arranged in a six-lobed shape to avoid rotation of the fixing bolt 4. In addition, the hooking portion 421 is provided with a semi-spherical protrusion on the upper end of the locking head 42 for the purpose of facilitating the hooking and detaching of the fixing bolt 4. The hooking portion 421 of the present invention is not limited to the hemispherical convexity. It can be a groove ring, a recess or other form.

The exit pin 5 includes a head end 51 and a tail end 52, and the head end 51 and the tail end 52 are respectively disposed at opposite ends of the exit pin 5, and the exit pin 5 is provided with an external thread 53. The external thread 53 is disposed on the exit pin 5 at abutting the head end 51. Moreover, the outer thread 53 of the exit pin 5 is a male thread, that is, the outer thread 53 protrudes from the outer surface of the rod of the exit pin 5. In addition, in the present embodiment, the exit pin 5 is also a tapered plug and has a bolt diameter at the head end 51 that is larger than the bolt diameter of the tail end 52, and the tail end 52 is a convex round head and the bolt diameter is less than The aperture of the knob 41 is such that the exit pin 5 is free to rotate. In addition, the angle of inclination of the exit pin 5 of the tapered plug is also within 2 degrees.

Please refer to FIG. 4. FIG. 4 is a cross-sectional view showing the fixing bolt of the preferred embodiment of the present invention. As shown in the figure, when the abutment body 3 is combined with the implant 2, the tapered engagement end 31 of the abutment body 3 is inserted into the tapered slot 221 of the implant 2, and transmits 1 to 2 degrees. The tilt angle is set to reach the first heavy locking taper. In addition, the fixing bolt 4 passes through the through hole 32 of the support body 3, and is also transmitted through, and the fixing bolt 4 of the tapered rod is inserted into the through hole 32 of the tapered hole to achieve a double locking taper. To create an excellent fastening effect. In addition, the locking end 41 of the fixing bolt 4 is inserted into the rotation groove 222 of the implant 2, and the locking head 42 of the fixing bolt 4 is fitted into the locking groove 331 of the abutment body 3. According to this, the rotation of the abutment body 3 or the fixing bolt 4 can be avoided.

Please refer to FIG. 5. FIG. 5 is a cross-sectional view showing the dismounting of the abutment body according to a preferred embodiment of the present invention. When the abutment body 3 is to be removed, the relief pin 4 is first removed, and the escape pin 5 is inserted into the through hole 32 of the abutment body 3. Then, the plug 5 is rotated to rotate the external thread 53 into the internal thread 321 in the through hole 32, and continues to rotate so that the tail end 52 of the exit plug 5 abuts against the rotation groove 222 of the implant 2, and the support body 3 The tapered slot 221 will automatically exit. Accordingly, the abutment body 3 can be easily and conveniently removed by replacing the fixing pin 4 with the ejecting pin 5 and rotating the ejecting pin 5 to easily withdraw the abutment body 3 from the implant 2. Moreover, since the thread of the exit pin is disposed in the abutment body 3, no thread groove is provided in the tapered slot 221 of the implant 2, and the implant body 2 has a considerable wall thickness, which can effectively avoid weakening the implant 2. strength.

The above-mentioned embodiments are merely examples for convenience of description, and the scope of the claims is intended to be limited to the above embodiments.

2,90,92,94. . . Implant

20. . . Spiral groove

twenty one. . . Fixed end

twenty two. . . Joint end

220. . . End face

221. . . Tapered slot

222. . . Slot stop

3,91,93,95,97. . . Support body

31. . . Tapered joint end

310,330. . . End face

32. . . Through hole

321. . . internal thread

33. . . Fixed end of the tooth

331. . . Locking groove

4. . . Fixing bolt

41. . . Swing end

42. . . Card head

421. . . Hook attachment

5. . . Exit bolt

51. . . Head end

52. . . Tail end

53. . . External thread

901. . . Thread

911. . . Screw

920. . . groove

921. . . Hexagonal groove

930,950. . . Insertion end

931,971. . . Hexagon fixed end

940. . . Slot

96. . . Screw

Figure 1A is a perspective view of a conventional abutment body lock type.

Figure 1B is a partial cross-sectional perspective view of a conventional tapered lock.

Figure 1C is a partial cross-sectional perspective view of another conventional tapered lock.

Figure 1D is a perspective view of another conventional tapered locking abutment body.

Figure 1E is a cross-sectional view of a conventional Morse taper plus screw lock.

2 is an exploded view of a preferred embodiment of the present invention.

3A is a cross-sectional view of abutment body in accordance with a preferred embodiment of the present invention.

Figure 3B is a cross-sectional view of a plant in accordance with a preferred embodiment of the present invention.

Figure 3C is a front elevational view of a retaining peg in accordance with a preferred embodiment of the present invention.

Figure 3D is a partial cross-sectional view of the exit pin of a preferred embodiment of the present invention.

Figure 4 is a cross-sectional view showing the mounting bolt of the preferred embodiment of the present invention.

Figure 5 is a cross-sectional view showing a state in which the abutment body is removed in accordance with a preferred embodiment of the present invention.

2. . . Implant

20. . . Spiral groove

twenty one. . . Fixed end

twenty two. . . Joint end

220. . . End face

221. . . Tapered slot

3. . . Support body

31. . . Tapered joint end

310,330. . . End face

32. . . Through hole

33. . . Fixed end of the tooth

331. . . Locking groove

4. . . Fixing bolt

41. . . Swing end

42. . . Card head

421. . . Hook attachment

5. . . Exit bolt

51. . . Head end

52. . . Tail end

53. . . External thread

Claims (10)

A dental implant positioning system includes: an implant having a fixed end and a joint end, the fixed end and the joint end are respectively disposed at corresponding ends of the implant, and the outer surface of the implant is formed a spiral groove extending to the fixed end, a tapered slot is formed from the end of the joint end facing the implant, and a stop groove is recessed at the bottom end of the tapered slot; The body has a tapered engaging end, a through hole, and a fixed end of the tooth, and the tapered engaging end and the fixed end of the tooth are respectively disposed at two corresponding ends of the supporting body, the through hole is An end surface of the through-hole end of the through-hole is provided with an internal thread, and an opening is provided in the through-hole of the fixed end of the tooth body; The fixing bolt has a locking end and a locking end, the locking end and the locking head are respectively disposed at the corresponding ends of the fixing bolt; and an exiting bolt has a head end and a tail end The head end and the tail end are respectively disposed at opposite ends of the exit plug, and the outer surface of the exit plug is provided with an outer surface. The tapered engagement end of the support body is inserted into the tapered slot of the implant body, and the fixing bolt passes through the through hole of the support body, and the rotation of the fixing bolt The insertion end is inserted into the rotation stop groove of the implant, and the locking head of the fixing bolt is embedded in the locking groove of the support body; if the support body is to be disassembled, the removal is removed after the fixing bolt is removed The external thread of the plug is screwed into the internal thread of the through hole of the abutment body, and the tail end of the ejecting pin abuts against the conical slot, so that the abutment body exits the conical slot. The dental implant positioning system according to claim 1, wherein when the abutment body is to be disassembled, the tail end of the withdrawal bolt abuts against the bottom end of the rotation groove of the implant, the branch The table body exits the tapered slot. The dental implant positioning system according to the first aspect of the invention, wherein the internal thread is disposed in the through hole adjacent to the locking groove. The dental implant positioning system according to claim 3, wherein the external thread is disposed on the exit pin adjacent to the tip end. The dental implant positioning system according to claim 1, wherein the through hole of the abutment body is a conical hole and the hole at the fixed end of the tooth body is larger than the conical joint end thereof. The aperture is a tapered rod and the rod diameter of the locking head is larger than the rod diameter of the locking end. The dental implant positioning system of claim 5, wherein the withdrawal plug is a tapered plug and the bolt diameter at the head end is greater than the bolt diameter at the tail end. The dental implant positioning system according to the sixth aspect of the invention, wherein the through hole has a hole wall inclination angle of 2 degrees or less, and the inclination angle of the fixing bolt and the exit pin is within 2 degrees. The dental implant positioning system according to claim 1, wherein the rotation groove of the implant is a hexagonal groove, and the rotation end of the fixing bolt is a hexagonal convex end. The dental implant positioning system of claim 1, wherein the locking groove of the abutment body is a six-lobed groove, and the locking head of the fixing bolt is a six-lobed head end. . The dental implant positioning system according to claim 1, wherein the tapered slot has an inclination angle of 2 degrees or less, and the tapered engagement end has an inclination angle of 2 degrees or less.