KR20090085307A

KR20090085307A - A false tooth system

Info

Publication number: KR20090085307A
Application number: KR1020080011123A
Authority: KR
Inventors: 문명진
Original assignee: 문명진
Priority date: 2008-02-04
Filing date: 2008-02-04
Publication date: 2009-08-07

Abstract

The present invention relates to an artificial tooth, and in particular, the upper and lower lengths of the artificial tooth is made to be easily placed in the maxillary and mandibular alveolar bone, but also to increase the bonding force with the abutment coupled to the artificial tooth.

Currently, the system of artificial teeth is composed of artificial tooth implanted in the alveolar bone, abutment bonded to the artificial root and a prosthesis coupled to the abutment, and the artificial tooth implanted in the alveolar bone has a bond force with the abutment. It has a certain length in order to increase the depth when the implant is deep in the maxillary and mandibular to stimulate the nerve is generated.

Therefore, in the present invention, the upper and lower lengths of the artificial roots are shortened while the bonding force is increased, and the bond strength of the abutment to be combined with the artificial roots is increased to have the ease of the procedure and the strong bonding force.

Description

Artificial tooth system with short vertical length and large friction surface {A false tooth system}

The present invention relates to an artificial tooth system, and in particular, even when the depth of the maxillary and mandibles is shallow, while the upper and lower length of the artificial root can be shortened, but also firmly and easily implanted into the alveolar bone as well as excellent bond strength of the abutment It is.

Currently, the artificial tooth system is composed of artificial roots placed in the alveolar bone, abutments coupled to the artificial roots, and prostheses coupled to the abutments.

Therefore, the above artificial tooth system is capable of placing each tooth independently, and the artificial tooth thus implanted independently can support the damaged tooth (or extraction) as in the conventional general dental treatment. For teeth, there is no need to squeeze the whole natural tooth next to it, and in some cases, the denture can be fixed stably, and in addition to long life, it has many advantages, such as superior aesthetics.

In addition, the concept of a dental implant in the artificial tooth system is a relatively simple concept of inserting an artificial tooth into the alveolar bone and fusion to the bone as well known in the art, and then combining the abutment which is the support of the artificial tooth to the artificial tooth. However, various systems in various ways have been proposed.

Therefore, in the past, straight straight artificial tooth roots were predominant, but in recent years, tapered type root tooth (root form) artificial tooth roots have been widely used due to the following advantages.

First: tapered prosthesis is similar to the shape of extraction socket after tooth extraction, so more contact area can be obtained from tooth extraction and immediate placement of implant after extraction Is advantageous.

In other words, when a straight artificial root is placed on the extraction and extraction of the alveolar bone, a space is created between the artificial root and the alveolar bone. However, in the case of a tapered artificial tooth, the shape of the tooth is similar to that of the extraction, thus preventing the occurrence of space and securing a large contact area. Can be.

Second: a stronger initial stability can be achieved with the wedge effect.

In other words, the smaller the angle of the tip of the artificial root, the greater the vertical component of the side of the artificial root. When the tapered artificial tooth is placed in the cavity generated in the alveolar bone by drilling, the lower part of the artificial root The narrower diameter of not only allows better penetration into the narrow space of the vortex core, but also the effect of an initial fixation with the alveolar bone by increasing the vertical component on the side of the artificial root.

Therefore, due to the advantages of the tapered artificial tooth root as described above, it is usually proposed and used in the manner of various implants.

However, according to the combination method of abutment in artificial roots, it is divided into screw type and non-screw type.

As a basic system of a screw type known to date, as shown in FIG. 3 under the trade name " Branemark system " in the industry, a screw 100 having a tap (self tapping) is formed on the outer circumference of the alveolar bone 200 An abutment 20 and the abutment 20 in which an artificial tooth I0 inserted into the bone fusion and a support screw 21 are screwed into an inner circumference where the screw hole 11 of the artificial tooth 10 is formed. It is configured to include a prosthesis 30 coupled to the prosthesis and a prosthesis connecting body 31 for fixing the prosthesis 30.

In FIG. 3, reference numeral 40 denotes an auxiliary screw for shielding the screw hole 11 of the artificial root 10 until the artificial root 10 is fused with the alveolar bone 200 to prevent food waste from entering. , Dotted line is the prosthesis 30 to be cured and processed and installed.

However, the screw-type artificial tooth system as described above has a disadvantage in that the number of required parts is very high, which is expensive to manufacture and maintain and the procedure is complicated, and that the number is expensive. The maximum external force is ultimately dependent on the size of the thread's width and the width and length of the artificial tooth, so that the bearing force is small. If the bearing force cannot be tolerated, the cause of screw loosening, etc. At the same time, when performing functional occlusal function in the oral cavity, the compressive force is relatively strong, but when the pulling force is increased, screw loosening is more likely to occur due to use, and the gap created by poor interconnection of artificial tooth and abutment tooth. Furnace is a path for germs to enter, which causes hygiene problems and Would that cause inflammation of the tissue.

On the other hand, the non-screw artificial tooth system, as shown in Fig. 4, uses a taper locking method based on surface frictional force between the parts and the industry's system of Thomas D. Driskell. Known as, the conical part 11 provided on the upper portion of the artificial tooth root 10 in the form of a post is a simple two-piece configuration of the tapered locking method to the socket 21 of the preparation tooth 20.

4 is a temporary support in the form of a cap.

FIG. 5 is another non-screw implant system based on a similar taper locking scheme, known in the industry under the trade name Bicon, as a commercial success system in certain countries.

The above configuration forms a socket 11 having a tapered surface gradually expanding upward in the artificial tooth 10 inserted into the alveolar bone 200 and a post portion having a tapered surface corresponding to the lower portion of the abutment 20. It is also a two-piece configuration in which (21) is extended to couple the abutment (20) to the artificial tooth root (10) by the frictional force between the surface of the socket (11) and the post portion (21).

In addition, reference numeral 40 is a plug of plastic material that is inserted into the socket 11 of the artificial tooth root 10 and the artificial tooth root 10 is implanted in the alveolar bone 200 to shield it while being treated.

However, in the conventional systems as described above, the artificial tooth 10 is in charge of the coupling to the alveolar bone 200, and the abutment 20 supporting the prosthesis 30 is coupled to the artificial tooth 10. External force such as occlusal force is ultimately transmitted to the preparation tooth 20 through the prosthesis 30, so that the strength of these systems is dependent on the coupling force between the preparation tooth 20 and the artificial tooth 10 and the strength of the artificial tooth 10 itself. .

In addition, patients with shallow depths of the maxillary and mandibular bones need to pay close attention to the procedure by touching the nerves in the bones when the artificial roots are used for a long time. In these patients, the length of the artificial roots should be short. The bond area between artificial root and abutment is small, which reduces the bond strength.

Therefore, in the present invention, the upper and lower lengths of the artificial roots are short enough to be suitable for patients with shallow depths of the maxillary and mandibular bones.

To this end, in the present invention, the interlocking joint of the artificial tooth and the abutment induces the engagement by double coupling, thereby increasing the engagement surface even when the upper and lower lengths are short.

Therefore, even if the upper and lower lengths of the artificial root and the abutment are short, the friction area is increased, so that a strong supporting force is obtained, and thus, the implantation is easily possible even when placed in the maxilla and the mandible for various patients with different bone structures.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

First of all, the basic configuration of the present invention is due to the double coupling of the artificial tooth and the abutment of the abutment, and for this purpose, the artificial tooth is implanted in the maxilla or the mandible as illustrated in FIGS. ), A tapered hole (2) is formed at the inner edge, and a post (3) protruding at a predetermined height is formed at the center of the hole (2), and an artificial surface is formed on the upper surface of the post (3). The tightening element 4 is formed to facilitate the placement of the tooth root 10.

In addition, abutment protrusions 5 protruding in an annular shape are formed in the abutment 20 so as to be engaged with the tapered holes 2 of the artificial tooth root 10, and to the center of the annular engagement protrusions 5. Is a configuration in which the concave holes 6 are formed.

In addition, as shown in Figures 4 to 6, the artificial root implanted in the upper jaw or the lower jaw has a tab (1) formed in the form of a spiral or a bone in the outer circumference, and a tapered hole (2) in the inner edge. In order to facilitate the placement of the artificial tooth 10 into the upper surface of the cylindrical partition 3a, a tapered valley 2a formed by the cylindrical partition 3a is formed. The tightening element 4 is formed.

In addition, the abutment 20 is formed in the abutment 20 so as to be engaged with the tapered hole 2 of the artificial tooth root 10 and the tapered bone 2a, and an annular coupling is formed. The tapered valley 6a is formed inside the protrusion 5, and the protrusion 5a is formed in the center of the tapered valley 6a.

At this time, the tightening element 4 formed in the artificial tooth can be formed into various tools by forming a wrench groove for a tool such as a triangle, a square, a hexagon, or a star, or a groove of a Phillips-head or flat-blade screwdriver, or protruding these. It will be possible to use and variations of this form do not limit the object of the present invention.

In addition, the tab 1 of the artificial tooth root 10 has an upper layer and a lower layer in which the width of the spiral line, that is, the pitch interval is narrow in the upper layer, thereby making it excellent in engagement with the hard bone, and the spiral layer in the lower layer. By taking the shape of the width of the pitch, that is, the pitch is wide, it is excellent in the engagement of the sponge-like bone.

In addition, when the artificial tooth and the abutment is engaged, as shown in FIGS. 3 and 6, the engagement space 7 is formed, thereby enabling a strong tightening and a gradual coupling.

Therefore, by the combination of the two or three will have a lot of bonding surface will have a strong bonding force even if the upper and lower length of artificial root and abutment.

In addition, because the tab is divided into two stages, the bonding force will be excellent according to the state of the bone.

Figure 1 is an exploded perspective view of the main portion of an embodiment of the present invention.

2 is a cross-sectional view of main parts of FIG. 1;

3 is a combined cross-sectional view of FIG.

Figure 4 is an exploded perspective view of the main portion of another embodiment of the present invention.

5 is a partial cross-sectional view of FIG.

6 is a combined cross-sectional view of FIG.

7 to 9 are cross-sectional views of one conventional embodiment.

1: tap 2: tapered hole

2a: tapered groove 3: post

3a: bulkhead 4: fasteners

5: coupling protrusion 5a: protrusion

6: concave hole 6a: tapered groove

7: interlocking space

Claims

The artificial tooth system having a short upper and lower length and a large friction surface is characterized in that the interlocking is formed by taping the artificial root and the abutment having a tab formed at the outer circumference.

According to claim 1, For the double bond artificial tooth root is formed in the outer periphery tab (1), the inner periphery tapered hole (2) is formed, the tapered hole (2) In the center of the post (3) is formed protruding and the engaging projection (5) and the annular engaging projection (5) protruding in an annular shape to be engaged with the tapered hole (2) of the artificial tooth (10) A tapered recessed hole 6 is formed at the center of the artificial tooth system, which has a short vertical length and a large friction surface.

According to claim 1, wherein the artificial tooth root has a tab (1) is formed on the outer circumference, the tapered hole (2a) which is separated by the tapered hole (2) and the cylindrical partition (3a) on the outer edge ( 2a) is formed, and the abutment portion 20 protruding in an annular shape is formed in the abutment 20 so as to be engaged with the tapered hole 2 and the tapered bone 2a of the artificial tooth 10. In the inner side of the annular engaging protrusion 5, a tapered valley 6a is formed, and in the center of the tapered valley 6a, a protrusion 5a is formed. Faceless Artificial Teeth System

The artificial tooth system according to claim 2 or 3, wherein fastening elements are formed on the partition walls of the posts and the cylinders, respectively.

[4] The artificial tooth system of claim 2 or 3, wherein the tab has a short pitch interval at an upper layer of the artificial tooth and a pitch interval at a lower layer of the tab.