TWI398242B - Implant - Google Patents

Description

Artificial root implant

The present invention relates to an artificial root implant, and more particularly to an artificial root implant having good binding reliability with respect to the gums and alveolar bone.

The conventional artificial root implant 9 is shown in Fig. 1. It comprises a drill portion 91, a column portion 92, an external thread 93 and an inner hole 94. The drill portion 91 is disposed in the conventional manual. One end of the root implant 9 is an arc-shaped drill bit. The dental column portion 92 is disposed at the other end of the conventional artificial root implant 9, and its outer peripheral surface is a smooth surface. The external thread 93 is disposed on the outer circumferential surface of the conventional artificial root implant 9 and adjacent to the drill portion 91. The inner hole 94 is a blind hole. The inner hole 94 is axially opened on one end surface of the conventional artificial root implant 9 and an opening 940 is formed on the end surface of the dental column portion 92. The inner hole 94 is formed. A fitting portion 941 and an internal thread portion 942 are disposed inwardly from the opening 940. The fitting portion 941 and the internal thread portion 942 are used for setting a set of teeth (not shown). The conventional artificial root implant 9 is a conical cylinder, and thus the outer diameter of the conventional artificial root implant 9 is tapered from one end of the dental stem portion 92 toward the one end of the drill portion 91.

When the conventional artificial root implant 9 performs a dental implant operation, the drill portion 91 is placed in a drill hole previously formed on the gum and the alveolar bone, and the conventional artificial root implant 9 is used. The external thread 93 is screwed into the gum and the alveolar bone. The arc-shaped drill portion 91 can open the nerve near the gum and the alveolar bone during the process of breaking into the gum and the alveolar bone, and reduce the nerve receptor. Damage or damage occurs. Moreover, since the conventional artificial root implant 9 has a tapered continuous tapered surface from the dental column portion 92 to the drill portion 91, in order to reduce the conventional artificial root implant 9 when tapping into the gums and alveolar bone The impedance force encountered makes the artificial artificial root implant 9 easier to break into the gums and alveolar bone, and improve the efficiency of implanting teeth.

However, the direction of the external force experienced by the teeth in the oral cavity often changes with the direction of chewing, which includes the external force in the linear direction and the torque in the rotational direction. Wherein, the torque generated by the teeth during chewing continues to act on the teeth, which easily drives the conventional artificial root implant 9 to simultaneously generate a reverse rotation opposite to the screwing direction, resulting in the conventional artificial root under long-term use. The implant 9 may be reversed from the gums and the alveolar bone and loosened, causing the artificial artificial root implant 9 to fall off.

In addition, since the conventional artificial root implant 9 is a tapered cone having an upper width and a lower width, the gingival and alveolar bone cannot be given to the conventional artificial muscle during the reverse rotation of the artificial root implant 9. The root implant 9 has an appropriate impedance so that the reliability of the conventional artificial root implant 9 relative to the gums and the alveolar bone is not good. For the above reasons, it is indeed necessary to further improve the aforementioned conventional artificial root implant 9.

The invention provides an artificial dental root implant which can improve the reliability of the joint between the artificial tooth root implant and the gum and the alveolar bone, and is an object of the invention.

The invention provides an artificial dental root implant which can reduce the compression of the gums and the alveolar bone, is beneficial to the regeneration of the gums and alveolar bone, and shortens the overall time course of the dental implants, and is another object of the present invention.

The artificial root implant according to the present invention comprises a drill portion, a positioning neck portion, a threaded portion and a coupling hole. The opposite ends of the artificial root implant are respectively a first end and a second end, the drill portion is formed at a first end of the artificial root implant, and the positioning neck is formed on the artificial root implant Two ends. The positioning neck has a tapered surface and a snapping unit disposed on a circumferential surface of the positioning neck, the tapered surface forming a tapered taper along the first end toward the second end, The card abutting unit is correspondingly disposed on the inclined tapered surface. The threaded portion is disposed on a circumferential surface of the artificial root implant and is located between the drill portion and the positioning neck portion.

The artificial root implant of the present invention mainly forms the lower width and the narrow positioning neck at the end of the artificial root implant relative to the gum and the alveolar bone, so that the gum and the alveolar bone can continue to apply to the positioning neck. The pressure resistance is prevented to prevent the artificial root implant from being detached from the gum and the alveolar bone, and the regeneration of the gums and bone cells is facilitated, thereby shortening the dental treatment process.

Furthermore, the positioning neck is provided with the card abutting unit on the inclined cone surface, thereby increasing the frictional force and the engaging ability between the gum and the alveolar bone relative to the inclined cone surface, and further improving the artificial tooth root implant. The reliability of the bond with the gum and the alveolar bone.

The above and other objects, features and advantages of the present invention will become more <RTIgt; The artificial root implant of the first embodiment of the present invention is mostly made of titanium/titanium alloy, zirconia or alumina. For convenience, the opposite ends of the artificial root implant of the present embodiment are respectively used as a first end. And a second end. The artificial root implant system includes a drill portion 1, a positioning neck portion 2, a threaded portion 3, and a coupling hole 4. The drill portion 1 is formed at a first end of the artificial root implant; the positioning neck 2 is formed at a second end of the artificial root implant. The threaded portion 3 is disposed on a circumferential surface of the artificial root implant and is located between the drill portion 1 and the positioning neck portion 2. The coupling hole 4 is formed at an end surface of the second end.

Referring to FIGS. 2 and 3, the drill portion 1 is preferably formed in an arc shape or a tapered shape. In the present embodiment, the drill portion 1 having an arc shape is described as an embodiment. The positioning neck portion 2 is adjacent to the threaded portion 3, and the contoured shape of the positioning neck portion 2 is a cone. Therefore, the circumferential surface of the positioning neck portion 2 forms a tapered surface 21, and the inclined tapered surface The 21 series forms a tapered taper from the first end of the artificial root implant toward the second end of the artificial root implant. Wherein, the inclined cone surface 21 and the axis L of the artificial root implant have an angle θ, and the angle θ is preferably between 1 and 20 degrees. In addition, the positioning neck portion 2 is further provided with a card abutting unit 22, and the card abutting unit 22 is correspondingly disposed on the inclined cone surface 21. The card abutting unit 22 of the embodiment is composed of a plurality of ring grooves, and the plurality of rings The grooves are arranged in parallel with each other on the inclined tapered surface 21.

Referring to FIGS. 2 and 5, the threaded portion 3 is circumferentially disposed on the circumferential surface of the artificial root implant in a single thread direction, and the artificial root implant is provided with a circumferential surface of the segment of the threaded portion 3. There is also a tapered taper that tapers from the second end of the artificial root implant toward the first end of the artificial root implant. The coupling hole 4 is a blind hole for the alignment of a table tooth T. An opening 40 is formed on the end surface of the coupling hole 4 in the axial direction opposite to the second end. The coupling hole 4 is provided with a fitting portion 41 and an internal thread portion 42 inwardly from the opening 40. The fitting portion 41 The aperture is larger than the aperture of the internal thread portion 42 , and the inner surface of the fitting portion 41 adjacent to the opening 40 forms an enlarged diameter so that the abutment tooth T can be easily placed into the coupling hole 4 . The internal thread portion 42 communicates with the fitting portion 41 such that the abutment tooth T is screwed into the coupling hole 4.

Please refer to the fourth and fifth figures. Generally, when the dental implant treatment is performed, a drill hole H is formed in advance on a gum 7 and a alveolar bone 8. The cross-sectional shape of the drill hole H is preferably The upper end is narrow and narrow in the shape of a V-shaped hole; then, the drill portion 1 of the artificial root implant is used as an implantation end, and the thread portion 3 is inserted into the gum 7 and the alveolar bone 8 correspondingly by cutting. As the gum 7 and the alveolar bone 8 are regenerated, the gum 7 and the alveolar bone 8 gradually cover the outer surface of the artificial root implant, wherein the gum 7 and the alveolar bone 8 cover the positioned neck. The tapered cone 21 of the second embodiment extends into the latching unit 22 so that the artificial root implant can be stably positioned in the gum 7 and the alveolar bone 8 after the dental implant treatment is completed.

The technical feature of the present invention is that the positioning neck 2 is formed at one end of the artificial root implant, so that when the gum 7 and the alveolar bone 8 regenerate and completely cover the positioning neck 2, Due to the wide and narrow tapered design of the positioning neck 2, even if the artificial root implant is subjected to the external pulling force or torque of the chewing, the gum 7 and the alveolar bone 8 attached to the inclined cone 21 can The positioning neck 2 is given a pressing resistance, thereby preventing the artificial root implant from arbitrarily separating from the gum 7 and the alveolar bone 8; at the same time, the tapered shape of the positioning neck 2 is also reduced. The compression of the gum 7 and the alveolar bone 8 is beneficial to the regeneration and healing of the gums and bone cells, thereby shortening the dental treatment process.

Moreover, the positioning neck portion 2 is also provided with the engaging portion 22 on the inclined tapered surface 21, whereby the gum 7 and the alveolar bone 8 are caught in the recess of the engaging portion 22, and the gum is increased. 7 and the friction between the alveolar bone 8 and the inclined cone surface 21 further enhance the reliability of the joint between the artificial root implant and the gum 7 and the alveolar bone 8.

Referring to Figures 6 and 7, the artificial root implant of the second embodiment of the present invention is disclosed. Compared with the first embodiment, the card abutting unit 22 of the second embodiment is selected by a thread, and the ring is formed. The slanted taper surface 21 of the positioning neck portion 2, wherein the threading direction of the snapping unit 22 is opposite to the thread direction of the threaded portion 3 (ie, the screwing direction of the threaded portion 3 is the snail of the snapping unit 22 In the direction). In this way, since the threading direction of the engaging portion 22 and the threaded portion 3 are not the same, the card abutting unit 22 is subjected to a torque that is screwed outward relative to the artificial root implant during the oral chewing. After the torque is applied, a stop resistance is reversely fed back, and the artificial root implant is prevented from being detached from the gum 7 and the alveolar bone 8 to further improve the bonding reliability of the present invention relative to the gum 7 and the alveolar bone 8.

In addition, the snap-in unit 22 is not limited to the aforementioned ring groove or thread structure, and may be selected to have a structure such as embossing or lack of groove to increase friction or engagement capability.

While the invention has been described in connection with the preferred embodiments described above, it is not intended to limit the scope of the invention. The technical scope of the invention is protected, and therefore the scope of the invention is defined by the scope of the appended claims.

[this invention]

1. . . Drill section

2. . . Positioning the neck

twenty one. . . Oblique taper

twenty two. . . Card abutment unit

3. . . Thread part

4‧‧‧Contact hole

40‧‧‧ openings

41‧‧‧Mate

42‧‧‧Threaded Department

H‧‧‧Drilling holes

T‧‧‧ abutment teeth

Θ‧‧‧ angle

[study]

9‧‧‧Study artificial root implants

91‧‧‧Drill Department

92‧‧‧dental section

93‧‧‧External thread

94‧‧‧ Inside hole

940‧‧‧ openings

941‧‧‧Mate

942‧‧‧Threaded Department

Figure 1: A cross-sectional view of a combination of conventional artificial root implants.

Fig. 2 is a partial cross-sectional view showing the artificial root implant of the first embodiment of the present invention.

Fig. 3 is a partial enlarged and side view showing the positioning neck of the artificial root implant of the first embodiment of the present invention.

Fig. 4 is a schematic view showing the use of the artificial root implant of the first embodiment of the present invention before being placed in the drill hole.

Fig. 5 is a schematic view showing the implantation of an artificial root implant in the gingival and alveolar bone according to the first embodiment of the present invention.

Figure 6 is a partial cross-sectional view showing the artificial root implant of the second embodiment of the present invention.

Figure 7 is a schematic view showing the implantation of the artificial root implant in the gingival and alveolar bone according to the second embodiment of the present invention.

1. . . Drill section

2. . . Positioning the neck

twenty one. . . Oblique taper

twenty two. . . Card abutment unit

3. . . Thread part

4. . . Bonding hole

40. . . Opening

41. . . Mating part

42. . . Internal thread

Claims (8)

An artificial root implant comprising: a first end and a second end; a drill portion formed at a first end of the artificial root implant; and a positioning neck formed at a second end of the artificial root implant The positioning neck has a tapered surface and a snapping unit disposed on a circumferential surface of the positioning neck, the tapered surface forming a tapered taper from the first end toward the second end, The card abutting unit is correspondingly disposed on the inclined cone surface, the card abutting unit includes a thread, the threading direction of the card abutting unit is opposite to the thread direction of the threaded portion; and a threaded portion is disposed on the ring of the artificial tooth root implant The circumference is located between the drill portion and the positioning neck. The artificial root implant according to claim 1, wherein the inclined cone has an angle with an axis of the artificial root implant, and the angle is between 1 and 20 degrees. The artificial root implant according to claim 1, wherein the artificial tooth root implant is provided with a tapered taper of the segment of the threaded portion, the tapered taper being from the artificial root implant The second end is tapered toward the first end of the artificial root implant. According to the artificial root implant of the first aspect of the patent application, a joint hole is formed at an end surface of the second end. The artificial root implant according to claim 4, wherein the coupling hole has an opening formed in an axial direction with respect to the end surface of the second end, and the coupling hole is provided with a fitting portion inwardly from the opening. Internal snail a groove portion, and the female screw portion communicates with the fitting portion. The artificial root implant according to claim 5, wherein the fitting portion has a larger diameter than the inner thread portion, and the fitting portion forms an enlarged diameter near the inner wall surface of the opening. According to the artificial tooth root implant described in claim 1, wherein the gum and the alveolar bone cover the inclined cone surface of the positioning neck, and correspondingly extend into the card abutting unit, so that the artificial root implant is completed. After the implant treatment, it can be firmly positioned in the gum and alveolar bone. The artificial root implant according to claim 7, wherein the snapping unit comprises an embossing or a missing groove for increasing the friction between the gum and the alveolar bone relative to the tapered surface.