Multi-variant abutment

Abstract

The present invention relates to a multi-variant abutment and, specifically, comprises: a fastening part connected to a fixture implanted in the alveolar bone; a flange part formed on the fastening part; and a head part which is provided on the flange part so that a crown is provided thereon, and which has a plurality of cut grooves formed on the outer surface thereof, and thus the abutments can have various shapes so that the appropriate shape can be selected according to the state of the teeth, alveolar bones, and gums of patients.

Description

polygonal abutment

[0001] The present invention relates to an abutment, and more particularly, to an abutment configured to be easily deformed into a plurality of shapes with a single abutment, so that a patient can select and use a shape necessary for the condition of their teeth, alveolar bone, and gums, and to an abutment that provides a digital library suitable for the deformed shape, thereby promoting the convenience of digital prosthetic work.

[0002] Dental implant (hereinafter referred to as “implant”) refers to a dental treatment technique that restores the function of natural teeth by implanting an artificial tooth made of a material with excellent biocompatibility into the jawbone in an area where a tooth is missing or where a tooth has been extracted, or refers to the artificial tooth itself.

[0003] These implants are usually composed of a fixture (artificial tooth root, implant fixture), an abutment (connecting member), and an artificial tooth (crown).

[0004] The fixture is formed in a screw shape with a material with excellent biocompatibility (e.g., titanium-based metal material) and is implanted into the alveolar bone where the tooth has been lost to fuse with the bone. The abutment is installed on the fixture after a certain period of osseointegration, and an artificial tooth for mastication and cosmetic purposes is installed on top.

[0005] Meanwhile, since the condition of teeth, alveolar bone, and gums are all different for each patient, in some cases, the abutment can be installed on the fixture without being eccentric by placing the fixture in the center of the implantation location, but in other cases, the fixture may not be placed in the center and may be placed offset to one side. In this case, the abutment must also be installed offset.

[0006] As such, since abutments with different shapes must be used depending on the patient's oral condition, dental clinics have a set of abutments suitable for each patient's tooth position and shape, as shown in Fig. 1, so that dentists can deal with various treatment situations.

[0007] However, the various abutment sets shown in Fig. 1 have limitations in that they can only be used in one corresponding situation, and there is a problem in that it is not easy to have all the various abutment sets.

[0008] The present invention has been devised to solve the problems of the above-mentioned prior art, and the purpose of the present invention is to provide a multi-modal abutment that is manufactured in a form in which a plurality of cutting grooves are formed and can be easily transformed in shape through a process of cutting along the cutting grooves, thereby enabling selection of an appropriate shape according to the condition of the teeth, alveolar bone, and gums of patients, and providing a digital library suitable for the transformed shape, thereby promoting the convenience of digital prosthetic work.

[0009] The polygonal abutment according to the present invention for solving the above-described problem comprises: a fastening portion connected to a fixture implanted in alveolar bone; a flange portion formed on an upper end of the fastening portion; and a head portion provided on an upper surface of the flange portion, on which a crown is installed on the upper end, and on which a plurality of cutting grooves are formed on the outer surface.

[0010] Here, the cutting groove is composed of an annular horizontal groove formed parallel to the flange portion along the outer surface of the head portion; and an annular inclined groove formed slanted along the outer surface of the head portion.

[0011] Meanwhile, the annular horizontal groove and the annular inclined groove are formed so that two points intersect each other, and the annular horizontal groove is composed of a first horizontal groove formed on one side of the annular inclined groove based on the annular inclined groove, and a second horizontal groove formed on the other side of the annular inclined groove; and the annular inclined groove is composed of a first inclined groove formed on the upper side of the annular horizontal groove based on the annular horizontal groove, and a second inclined groove formed on the lower side of the annular horizontal groove.

[0012] In addition, the head portion is formed so that the diameter becomes smaller as it goes upward, and the outer surface is formed so that it tapers inward at a certain angle with respect to the vertical line.

[0013] In addition, threads having a hat-shaped slant are arranged at regular intervals up and down around the outer surface of the lower portion of the head portion, and a number of grooves are formed between the threads.

[0014] The polygonal abutment of the present invention configured as described above can produce abutments of various shapes by cutting along the cutting grooves, so that it is possible to select an appropriate shape according to the condition of the patient's teeth, alveolar bone, and gums, thereby enhancing the treatment effect.

[0015] In addition, since the circular horizontal groove and the circular inclined groove are formed in a cross pattern, many cases can be created with only two types of grooves, which has the advantage of allowing the creation of abutments in a wider variety of shapes.

[0016] Additionally, since the diameter of the head portion decreases as it goes upward and tapers inward, there is an advantage in that the crown can be easily installed on the top of the head portion.

[0017] Additionally, since the threads have a larger diameter as they go downward, the bonding strength with the cement applied when installing the crown on the abutment is improved, which has the advantage of allowing the crown to be more firmly attached to the abutment.

[0018] Furthermore, there is an advantage in that each specific type of abutment that is deformed by the cutting groove can be pre-registered in a digital library, which can greatly improve the convenience of future digital prosthetic work.

[0019] Figure 1 is a diagram showing various abutment sets according to the prior art.

[0020] Figures 2 and 3 are drawings showing a polygonal abutment according to the present invention.

[0021] Figure 4 is a diagram showing a deformed appearance of a polygonal abutment according to the present invention.

[0022] Figure 5 is a drawing showing a polygonal abutment according to the present invention installed in a fixture.

[0023] Hereinafter, an embodiment of a polygonal abutment according to the present invention will be described in detail with reference to the attached drawings.

[0024] FIG. 2 and FIG. 3 are drawings showing a polygonal abutment according to the present invention, FIG. 4 is a drawing showing a deformed appearance of a polygonal abutment according to the present invention, and FIG. 5 is a drawing showing a polygonal abutment according to the present invention installed in a fixture.

[0025] The multi-faceted abutment according to the present invention is composed of a fastening portion (100), a flange portion (200) integrally formed on the upper end of the fastening portion (100), and a head portion (300) provided on the upper surface of the flange portion (200).

[0026]

[0027] The above-mentioned fastening portion (100) is the lower part of the abutment and is connected to a fixture (F) implanted in the alveolar bone (A).

[0028] The above flange portion (200) is provided between the fastening portion (100) and the head portion (300), and is formed to have a diameter larger than that of the fastening portion (100) and the head portion (300). Therefore, when the fastening portion (100) is installed in the fixture (F), the flange portion (200) is located outside the fixture (F).

[0029] The above head part (300) has a crown (C) installed at the top, and its overall shape is formed in a shape similar to a cylinder, but the diameter becomes smaller as it goes upward.

[0030] In this way, since the diameter of the head portion (300) becomes smaller as it goes upward, the outer surface of the head portion (300) is formed to taper inward at a certain angle with respect to a vertical line when viewed from the side. In the present invention, the tapering angle is set to approximately 3 degrees, and this taper angle facilitates the installation of the crown (C).

[0031]

[0032] And, the head portion (300) has a number of cutting grooves (310) formed on the outer surface.

[0033] The above cutting groove (310) is a part that is cut with a cutting machine when making the abutment into a desired shape. When cutting is performed along the cutting groove (310), the upper part of the cutting groove (310) is removed and a crown (C) is installed in the remaining lower part.

[0034] The cutting groove (310) formed for this purpose is composed of an annular horizontal groove (311) and an annular inclined groove (312) formed so that two points intersect with the annular horizontal groove (311).

[0035] In the present invention, since the annular horizontal groove (311) and the annular inclined groove (312) are formed in an intersecting manner rather than in a disconnected state, a wider variety of abutment shapes can be realized when determining the shape of the abutment by cutting the cutting groove (310). Therefore, there is an advantage in being able to better respond to the various internal oral conditions of a patient.

[0036]

[0037] The above-mentioned annular horizontal groove (311) is formed as a closed curve along the outer surface of the head portion (300) and is formed parallel to the flange portion (200). This annular horizontal groove (311) is composed of a first horizontal groove (311a) and a second horizontal groove (311b).

[0038] The above first horizontal groove (311a) is formed on one side of the circular inclined groove (312) based on the circular inclined groove (312).

[0039] The above second horizontal groove (311b) is formed on the other side of the circular inclined groove (312) based on the circular inclined groove (312).

[0040] Accordingly, the first horizontal groove (311a) and the second horizontal groove (311b) are formed in a shape in which the sides facing each other from the left and right sides are open, and when the two ends of the first horizontal groove (311a) and the second horizontal groove (311b) are connected to each other, they form a single circular closed curve.

[0041]

[0042] The above-mentioned annular inclined groove (312) is formed as a closed curve along the outer surface of the head portion (300), but is formed so as to be inclined in one direction. This annular inclined groove (312) is composed of a first inclined groove (312a) and a second inclined groove (312b).

[0043] The above first inclined groove (312a) is formed on the upper side of the annular horizontal groove (311) based on the annular horizontal groove (311).

[0044] The above second inclined groove (312b) is formed on the lower side of the annular horizontal groove (311) based on the annular horizontal groove (311).

[0045] Accordingly, the first inclined groove (312a) and the second inclined groove (312b) are formed in a shape in which the sides facing each other from the upper and lower sides are open, and when the two ends of the second inclined groove (312b) and the second inclined groove (312b) are connected to each other, a single circular closed curve is formed.

[0046]

[0047] Meanwhile, a number of grooves (320) are formed at regular intervals on the outer surface of the lower portion of the head portion (300), and a number of threads (330) are formed between the grooves (320).

[0048] At this time, the thread (330) is formed in a shape in which the diameter increases as it goes downward. That is, the thread (330) is formed in a shape in which it droops downward as it goes toward the edge.

[0049] When installing a crown (C) on a head portion (300), dental cement is used to improve the bonding strength between the head portion (300) and the crown (C). Since the thread (330) is configured in the form described above, the bonding strength between the thread (330) and the cement is further improved, ultimately making the bonding between the head portion (300) and the crown (C) more solid.

[0050]

[0051] As described above, the present invention is configured to be easily deformed into a predetermined specific shape with one abutment, so that the necessary shape can be selected and used according to the condition of the teeth, alveolar bone, and gums of patients, and abutments of a specific shape cut by a cutting groove can be pre-registered in a digital library, so that the convenience of future digital prosthetic work can be greatly promoted.

Claims

1. A fastening part (100) connected to a fixture (F) implanted in the alveolar bone (A); A flange portion (200) formed on the upper end of the above fastening portion (100); A multi-sided abutment characterized by comprising a head portion (300) provided on the upper surface of the flange portion (200) and having a crown (C) installed at the upper end, and a plurality of cutting grooves (310) formed on the outer surface that can implement the shapes of at least two different head portions (300).

2. In claim 1, The above cutting groove (310) is a circular horizontal groove (311) formed parallel to the flange portion (200) along the outer surface of the head portion (300); A polygonal abutment characterized by comprising a circular inclined groove (312) formed inclined along the outer surface of the head portion (300).

3. In claim 2, The above circular horizontal groove (311) and circular inclined groove (312) are formed so that the two points intersect each other, The above-mentioned annular horizontal groove (311) is composed of a first horizontal groove (311a) formed on one side of the annular inclined groove (312) based on the annular inclined groove (312), and a second horizontal groove (311b) formed on the other side of the annular inclined groove (312). A polygonal abutment characterized in that the above-mentioned annular inclined groove (312) is composed of a first inclined groove (312a) formed on the upper side of the annular horizontal groove (311) based on the annular horizontal groove (311) and a second inclined groove (312b) formed on the lower side of the annular horizontal groove (311).

4. In claim 1, The above head portion (300) is a polygonal abutment characterized in that the diameter becomes smaller as it goes upward and the outer surface is formed to taper inward at a certain angle with respect to the vertical line.

5. In claim 1, A polygonal abutment characterized in that threads (330) having a hat-shaped slanted portion are arranged at regular intervals up and down around the outer surface of the lower portion of the head portion (300), and a plurality of grooves (320) are formed between the threads (330).

Images