KR20110052766A - Dental implant fixture and implant system having the same - Google Patents

Abstract

PURPOSE: A dental implant fixture and an implant system having the same are provided to enable a user to more conveniently perform an implant operation by easily guiding an initial implant entry direction. CONSTITUTION: An implant system comprises: a first main body part; a first fixture(100) equipped with a first screw part which is spirally formed in the section of the exterior of the first main body part; a second body part which is the same as the first main body part; and a second fixture(200) equipped with a second screw part having a diameter different from that of the first screw part.

Description

Dental implant fixture and implant system having the same {Dental implant fixture and implant system having the same}

The present invention relates to a fixture of a dental implant and an implant system having the same. More particularly, even if the initial fixture fails to be implanted, the next fixture can be immediately implanted without drilling, and thus implantation is performed. It relates to an implant system that can be conveniently performed.

Implants are originally meant to be a substitute for recovery when tissue is lost, but dentists refer to a series of procedures for implanting artificial teeth.

To replace the lost roots (roots), a fixture made of titanium, etc., which is not rejected by the human body, is planted in the alveolar bone where the tooth falls out, and then the artificial tooth is fixed to restore the function of the tooth. It is a procedure to make.

In the case of general prosthetics or dentures, the surrounding teeth and bones are damaged over time, but the implants do not damage the surrounding dental tissues, and they have the advantage that they can be used semi-permanently because they have the same function or shape as natural teeth and do not cause tooth decay.

Artificial dental procedures (also called implants or implant procedures) vary according to various types of fixtures, but after drilling the implantation position using a predetermined drill, the fixtures are implanted into the alveolar bone and bone fused to the bones. After joining the abutment, it is common to complete the application of the final prosthesis to the abutment.

Implants improve the function of dentures, improve the aesthetic aspects of dental prosthetic restorations, as well as dissipate excessive stress on surrounding supportive tissue, as well as single missing restorations. It also helps stabilize the teeth.

Such implants generally include fixtures that are placed as artificial roots, abutments that are coupled to the fixture, abutment screws that secure the abutments to the fixture, and artificial joints that are coupled to the abutments. Includes teeth. Here, the healing abutment (not shown) may be coupled to the fixture to maintain the binding state before the abutment is bonded to the fixture, that is, until the fixture is fused to the alveolar bone.

The fixture, which is one component of the implant, serves as an artificial root as a part to be placed in a drill hole formed in the alveolar bone by using a drill or the like at a position where the implant is to be treated. Therefore, the fixture must be firmly placed in the alveolar bone.

Thus, a screw portion (threaded thread) is formed on the outer surface of the fixture so as to be firmly coupled to the inner wall portion of the alveolar bone forming the drill hole. These screws are inserted into the alveolar bone not only to allow the fixture and the alveolar bone to be firmly coupled, but also to enhance the fixing force of the fixture to the alveolar bone by increasing the contact area between the fixture and the alveolar bone.

By the way, in the conventional dental implant fixture, since the screw portion is formed over the entire outer surface of the body portion of the fixture, it is not easy to match the direction of implantation with respect to the fixture when the fixture is initially implanted. There is a problem.

On the other hand, as described above, the implant procedure is to drill a hole in the alveolar bone using a drill, then implant the fixture in the perforated hole, and then combine the abutment with the fixture when the bone fusion progresses and finally put on the artificial tooth Proceeds to step.

In such an implant procedure, fixtures are selected with different sizes (maximum diameter of the thread) according to the treatment conditions, and in this case, drills also have to use different ones. Typically, a larger fixture uses a larger drill and a smaller fixture uses a smaller drill. This is because the body portion of the fixture is different depending on the size of the fixture.

However, if the drill is selected and used in accordance with the size of the fixture as described above or the alveolar bone has already formed a hole for fixing the fixture, the drilling work for the larger size of the fixture must be performed again. In such cases, the work is very cumbersome. In particular, when the initial fixture is unsuccessful, the body part is different from the initial fixture in order to insert the next fixture, so it is troublesome to perform the drilling operation again with a suitable drill.

Therefore, the development of a new concept implant system that can perform the implant procedure more conveniently than the conventional situation is required.

It is an object of the present invention to provide an implant system that can perform implant procedures more conveniently than the prior art, since the next fixture can be directly implanted without drilling, even if the initial fixture fails to be placed.

Another object of the present invention is to provide a fixture of a dental implant that can easily guide the initial implantation entering direction and can proceed more conveniently to the implant operation.

According to the present invention, there is provided, according to the present invention, a first fixture having a first screw portion formed in a spiral shape on at least a portion of the outer surface of the first body portion; And a second fixture having a second body portion identical to the first body portion, and a second screw portion spirally formed in at least a portion of an outer surface of the second body portion, the second screw portion having a different outer diameter from the first screw portion. It is achieved by an implant system characterized in that.

The second screw portion may be a wide screw portion larger than the width of the first screw portion.

The first fixture is formed by a predetermined section upwardly from the lower end of the first body portion with respect to the direction in which the first body portion is placed in a first entry direction for guiding an initial insertion entrance direction to the first body portion. It may include a guide, wherein the second fixture is formed by a predetermined section upwards from the lower end of the second body portion with respect to the direction in which the second body portion is placed in the initial insertion entrance direction to the second body portion It may include a second entry direction guide for guiding.

Each of the first and second entry direction guide parts may be provided by a non-screw section in which the first and second threaded portions are not formed on the first and second body parts.

Each of the first and second entry direction guide parts may include a flat part formed flat in the horizontal direction; An inclined portion formed to have a radius wider from the circumferential surface of the flat portion upward; And a curved portion connecting the inclined portion and each of the first and second screw portions to each other so that at least one region is curved inward in the radial direction.

The virtual outer line connecting the end portions of the first and second threaded portions and the first and second entry direction guides may include a tapered section and a straight section.

The virtual outer line may include a first taper section formed with a radius of the first and second body portions extending upward from the lower ends of the first and second body parts; A first straight section formed over a predetermined length section upwards from a point where the first tapered section ends; A second taper section in which a radius thereof is widened upwardly at a point where the first straight section ends; And a second straight section formed from an end point of the second tapered section to upper ends of the first and second body parts.

It may be further used when drilling a hole in the alveolar bone may further include a common drill applied in common when the first fixture and the second fixture is placed.

On the other hand, the above object, according to the present invention, the body portion; A screw portion formed spirally on at least a portion of an outer surface of the body portion; And an entrance direction guide part which is formed by a predetermined section upward from a lower end of the body part with respect to a direction in which the body part is placed and guides an initial insertion entrance direction to the body part. It is also achieved by chews.

The entry direction guide part may be provided by a non-screw section in which the screw part is not formed on the body part.

The entry direction guide portion, a flat portion formed flat in the horizontal direction; An inclined portion formed to have a radius wider from the circumferential surface of the flat portion upward; And a curved portion connected to the inclined portion and the screw portion, the at least one region being formed to be curved inward in the radial direction.

The virtual outer line connecting the end of the screw portion and the entry direction guide may include a tapered section and a straight section.

The virtual outer line may include a first taper section formed with a radius of the upper portion extending upward from a lower end of the body portion; A first straight section formed over a predetermined length section upwards from a point where the first tapered section ends; A second taper section in which a radius thereof is widened upwardly at a point where the first straight section ends; And a second straight section formed from an end point of the second tapered section to an upper end of the body portion.

The screw portion, the front end portion of the form inclined to the vertical or one side; And a curved surface portion formed on an upper surface or a lower surface of the tip portion to reduce resistance torque during implantation.

The curved portion may be an upper and a lower curved portion formed on the upper surface or the lower surface of the front end portion, respectively.

The body portion, the tapered portion of the tapered portion so as to narrow the diameter from the position adjacent to the upper end of the body portion toward the lower end; And it may include a cylindrical portion having the same diameter so as to reach the entry direction guide portion at the end of the tapered portion.

A bevel portion formed at an upper corner portion of the body portion; A cutting edge portion formed in the screw portion along the circumferential direction of the body portion; And an abutment coupling part provided at an inner region of the upper end of the body part to which an abutment is coupled.

The abutment coupling portion, the first depression in the primary portion along the longitudinal direction of the body portion from the upper end of the body portion; A secondary depression having a hexagonal shape in which the secondary depression is formed deeper in the longitudinal direction of the body portion at a lower end of the primary depression; And a screw groove formed along a longitudinal direction of the body portion in the central region of the secondary recessed portion to which an abutment screw for fastening the abutment is fastened.

According to the present invention, even if the initial fixture fails to be implanted, the next fixture can be directly implanted without drilling, and thus the implant procedure can be performed more conveniently than before.

In addition, according to the present invention, it is possible to easily guide the initial insertion entrance direction can proceed to the implant operation more convenient.

In order to fully understand the present invention, the operational advantages of the present invention, and the objects achieved by the practice of the present invention, reference should be made to the accompanying drawings which illustrate preferred embodiments of the present invention and the contents described in the accompanying drawings.

Hereinafter, the present invention will be described in detail by explaining preferred embodiments of the present invention with reference to the accompanying drawings. Like reference numerals in the drawings denote like elements.

1 is a block diagram of an implant system according to an embodiment of the present invention, FIG. 2 is an image of four fixtures having different sizes placed in holes of an alveolar bone of the same size, and FIG. 3 is shown in FIG. Fig. 1 is a perspective view schematically illustrating a process of placing the first fixture of the dental implant.

Referring first to FIG. 3, a large number of teeth 12 are arranged in the gum 11. Teeth 12 are primary digestive means for crushing food and sending them to the stomach, but may vary from person to person, but usually have about 28.

If any one of these teeth 12 is lost (when the molar is missing), the lost tooth 12 is not only aesthetically deteriorated but also inevitably considerably uncomfortable to chew food.

Thus, the first fixture 100 is implanted as a means to replace the root 12a of the tooth 12 on the gum 11 of the lost tooth 12. Of course, when the sizes of the first fixtures 100 do not match, the second fixtures 200 are placed instead of the first fixtures 100. The first fixture 100 and the second fixture 200 may be made of titanium (Ti, titanium) or a titanium (Ti) alloy having no rejection reaction to the human body.

As such, the first fixture 100 and the second fixture 200 are selected to be implanted in the alveolar bone in the gum 11, and a drilling operation is preceded before the implantation of the first fixture 100. That is, the drill hole (H) is processed at a predetermined position of the alveolar bone.

Referring to FIGS. 1 and 2, the implant system of the present embodiment will be described. The implant system of this embodiment includes two first fixtures 100 and a second fixture 200. As described above, the first fixture 100 and the second fixture 200 may be selected and implanted in a hole H (see FIG. 3) formed in the alveolar bone.

First, the first fixture 100 and the abutment 150 coupled to the first fixture 100 of the present embodiment will be described with reference to FIGS. 4 to 8. For reference, the first fixture 100 of the present invention, which will be described below, may be used when the first implant is performed, or may be used in a corresponding alveolar bone without replenishing a predetermined bone replacement material at the damaged part when the procedure is failed. It may also be an emergency for direct placement. The same applies to the second fixture 200.

4 and 5 are a perspective view and a side view of the first fixture shown in FIG. 3, respectively, and FIG. 6 is a side view of a screw removed from the first fixture shown in FIG. 5, and FIG. 7 is a plan view of FIG. 4. 8 is a partially enlarged view of the screw portion, and FIG. 9 is a perspective view of the abutment column.

As shown in FIGS. 4 to 8, the first fixture 100 of the dental implant of the present embodiment is formed spirally in the body portion 120 and at least a portion of an outer surface of the body portion 120. Entry direction for guiding the initial insertion entrance direction to the body portion 120 is formed by a predetermined section upward from the lower end of the body portion 120 with respect to the direction in which the screw portion 130 and the body portion 120 is placed Guide portion 160 is included.

The body part 120 is a part which forms the central stem in the 1st fixture 100 of this embodiment. Since the first fixture 100 is placed in the direction of the arrow of FIG. 3, the outer surface of the body part 120 has a straight straight structure, but in this embodiment, the body part 120 is narrower in diameter from the upper end to the lower end. Have a partially tapered shape.

That is, while the body portion (not shown) of the conventionally used fixture was a cylindrical structure of the cylindrical type having the same cross-sectional diameter in the longitudinal direction, the body portion 120 of the first fixture 100 of the present embodiment is It has a partially tapered shape so that the diameter becomes narrower from the upper end to the lower end.

As shown in FIG. 6, the body portion 120 includes a tapered portion 120a and a tapered portion that are partially tapered so that the diameter thereof becomes narrower from the position adjacent to the upper end of the body 120 toward the lower end. It has a cylindrical portion (120b) having the same diameter so as to reach the lower end of the body portion 120 at the end point 120a).

Since the cylindrical portion 120b serves to facilitate initial placement and the taper portion 120a serves to impart a strong fixing force, the cylindrical portion 120b may provide an improved effect on the placement and fixation than in the related art. In this case, the inclination angle of the tapered portion 120a may have a range of 10 degrees to 60 degrees, and may be manufactured to have an angle of 30 degrees as an embodiment, but the scope of the present invention is not necessarily limited to the numerical values thereof. none.

The bevel portion 121 is formed in the upper corner portion of the body portion 120. Bevel portion 121 provides a stronger holding force by providing a larger contact area than the alveolar bone.

A cutting edge portion 123 is formed in the screw 130 of the lower end region of the body portion 120. The cutting edge portion 123 is formed on the threaded portion 130 along the circumferential direction of the body portion 120, and serves to make the first fixture 100 easier to install due to its sharp tip.

The cutting edge portion 123 may be formed in the screw portion 130 having a direction inclined to one side with respect to the longitudinal direction of the body portion 120, in this case, the cutting edge portion 123 is the body portion 120 It may be formed symmetrically on both sides of the. Of course, this content may not limit the scope of the present invention, the cutting edge portion 123 does not necessarily have to be formed symmetrically on both sides of the body portion 120.

4 and 7, the abutment coupling part 140 to which the abutment 150 (Abutment, see FIG. 9) is coupled to the inner region of the upper end of the body part 120 is provided.

Referring to Figure 9 briefly with respect to the abutment 150, the abutment body 151 having a truncated cone shape and a through hole 151a is formed on the inside, and the primary coupling portion formed on the lower end of the abutment body 151 152 and a hexagonal secondary coupling portion 153 formed at the lower end of the primary coupling portion 152.

The primary coupling portion 152 is a portion that is coupled to the first depression 141 of the abutment coupling portion 140 to be described later, the secondary coupling portion 153 is a secondary depression of the abutment coupling portion 140. It is a part that is coupled to the fitting portion 142.

Since the inner wall of the primary depression 141 is tapered as described below, the primary coupling portion 152 of the abutment 150 is also tapered on its outer surface. The shape of the secondary coupling part 153 is provided in the same manner as the shape of the secondary depression 142.

The abutment coupling part 140 to which the abutment 150 of such a structure is coupled includes a first depression 141 which is primarily recessed along the longitudinal direction of the body portion 120 at an upper end of the body portion 120, and 1. The second recessed portion 142 and the second recessed portion having a hexagonal shape along the longitudinal direction of the body portion 120 at the lower end of the primary depression 141, the body in the central region of the secondary depression 142 It is provided along the longitudinal direction of the portion 120 is provided with a screw groove 143 to which the abutment screw (not shown) for fastening the abutment 150 is fastened.

The primary depression 141 is a portion to which the primary coupling portion 152 of the abutment 150 (see FIG. 9) is coupled. At this time, the primary coupling portion 152 of the abutment 150 should be a strong coupling or close coupling within the first recessed portion 141 of the first fixture 100, the strong coupling is made so that the coupling is not released well In addition, the sealing must be tightly coupled (sealing) to eliminate the risk of infection. Thus, the inner wall of the primary depression 141 is tapered so that the diameter gradually narrows from the upper end to the lower end. Its inclination angle may have a range of 2 degrees to 6 degrees similar to the inclination angle of the outer surface of the primary coupling portion 152 of the abutment 150, such as to process the inner wall of the primary depression 141 and When the abutment 150 is coupled, the first coupling portion 152 of the abutment 150 may be strongly coupled or tightly coupled to the tapered primary depression 141.

The secondary depression 142 is a portion to which the secondary coupling portion 153 of the abutment 150 that has passed through the primary depression 141 is fitted while being fitted into shape. As shown in FIG. 9, since the secondary coupling part 153 of the abutment 150 has a hexagon nut shape, the secondary depression 142 may also be manufactured in a hexagon shape so that the secondary coupling part 153 may be shaped accordingly. As described above, the secondary depression 142 is formed in a hexagonal shape, and the secondary coupling portion 153 of the abutment 150 is fitted while being fitted to fit the shape so as to prevent rotation of the abutment 150.

The screw groove 143 has a primary coupling part 152 and secondary coupling part 153 of the abutment 150 to the primary depression 141 and the secondary depression 142 of the abutment coupling part 140. When each of the fitting is coupled, the abutment screw (abutment screw, not shown) passing through the through hole 151a of the abutment 150 is fastened. The screw groove 143 is manufactured in the same size as the through hole 151a of the abutment 150.

The screw portion 130 is formed in a spiral shape on at least a portion of an outer surface of the body portion 120 to be implanted in the drill hole H (see FIG. 3) at an implantation position. Unlike the conventional screw portion 130 is not formed in the entire outer surface of the body portion 120. That is, the screw 130 is formed only on the outer surface of the remaining body portion 120 except for the entrance direction guide portion 160.

Looking at the shape or structural features of such a screw portion 130, as shown in Figure 8, the screw portion 130 is the front end portion 131a and the top surface of the tip portion 131a inclined in the vertical or one side. It is provided so that it may have the upper curved part 131b to form, and the lower curved part 131c which forms the lower surface of the front-end | tip part 131a.

In more detail, in the present embodiment, the shape of the mountain of the threaded portion 130, that is, the shape of the threaded portion 130 in this embodiment is based on the tip portion 131a, deviating from the conventional triangular or square screw shape. The upper and lower surfaces are machined into convex rather than straight lines.

That is, as shown in Figure 8, the tip portion (131a) is provided in a substantially vertical straight line, while the upper and lower portions of the upper and lower convex (concave view from the other side) relative to the tip portion 131a, respectively And lower curved portions 131b and 131c are formed. Of course, only one of the upper and lower curved portions 131b and 131c may be formed, but it may be preferable that the upper and lower curved portions 131b and 131c are provided symmetrically with respect to the front end portion 131a as in this embodiment. When having a characteristic, there is an advantage that the easy to be placed because the resistance torque is less when the first fixture 100 is placed.

For reference, an angle θ between the virtual straight lines (see the dotted line in FIG. 8) constituting the upper and lower curved portions 131b and 131c may be about 30 degrees, but is not necessarily the case. In addition, although the upper and lower curved portions 131b and 131c are symmetrically provided and described above, in some cases, the upper and lower curved portions 131b and 131c may have an asymmetrical shape. As a result, the upper and lower curved portions 131b and 131c have enough resistance torque when the first fixture 100 is placed, and thus, the upper and lower curved portions 131b and 131c may have sufficient resistance. The mutually open angles of the 131b and 131c, and the symmetrical or asymmetrical structures of the upper and lower curved portions 131b and 131c may be appropriately changed according to a situation.

5 and 6, the entrance direction guide part 160 is formed by a predetermined section upward from the lower end of the body part 120 with respect to the direction in which the body part 120 is placed and thus the body part 120. It serves as a guide to the initial insertion entrance direction for.

If, without making the entry direction guide portion 160 as in the prior art, and processing the screw portion 130 to the entry direction guide portion 160 area due to the characteristics of the screw portion 130 may not be easy to enter the insertion direction have. However, if the entry direction guide portion 160 is provided as a section without the screw portion 130 as in the present embodiment, at least the entry direction guide portion 160 may be inserted into the hole H (see FIG. 3) as it is to be placed. There is no risk that the entry direction is wrong, and since the first fixture 100 may be placed in this state depending on the threaded portion 130, the operation may be very convenient.

As described above, the entry direction guide part 160 may be provided by the non-screw section 160 in which the thread part 130 is not formed in the lower end area of the body part 120. The non-screw section 160 may be integrally processed at the time of manufacturing the first fixture 100, or may be processed through post-processing after the screw 130 is formed in the entire outer surface of the body 120. The entry direction guide portion 160 may be formed over a section of 1 mm to 3 mm from the lower end of the body portion 120.

The entry direction guide part 160 includes a flat part 161 which is formed flat in the horizontal direction, an inclined part 162 which is formed to have a radius wider upward from the circumferential surface of the flat part 161, and an inclined part. The curved portion 163 is connected to the 162 and the screw 130, and is formed such that at least one region is curved inward in the radial direction. At this time, the curved portion 163 and the inclined portion 162 may be integrated into one arc line unlike the drawing.

Looking at the overall appearance of the first fixture 100 having such a structure, the outer line (L) of the first fixture 100, that is, connecting the end of the entry direction guide portion 160 and the threaded portion 130 The virtual outer line L includes a tapered section and a straight section that are not simple straight lines. In particular, the tapered section and the straight section are formed repeatedly, which will be described.

Mainly referring to FIG. 5, the virtual outer line L that forms the outer side of the first fixture 100 has a first taper section in which a radius thereof is widened upward from a lower end side of the body part 120 ( L1), the first straight line section L2 formed over a constant length section upwards from the point where the first taper section L1 ends, and the radius thereof upwards from the point where the first straight line section L2 ends The second tapered section L3 is formed to be wider and the second straight section L4 is formed from the point where the second taper section L3 ends to the upper end of the body portion 120.

As such, the virtual outer line forming the outside of the first fixture 100 includes the first tapered section L1, the first straight line section L2, and the second tapered section L3 so that L extends from the bottom to the top. ) And the second straight section (L4), because the bone can be fused in contact with the bone in the finer and wider alveolar bone than the conventional straight fixture of the simple straight type, the amount of diarrhea bone is not rich or Even if a drill hole (H, see FIG. 3) is formed in the alveolar bone region of poor quality, and the first fixture 100 is implanted therein, the initial fixation force can be increased than in the prior art, thereby reducing the procedure time or healing time. There is an advantage.

Next, the second fixture 200 shown in FIG. 1 also corresponds to the first fixture 100, so that the second body part 220, the second threading part 230, and the second entrance direction guide part 260 are provided. It does not differ greatly in that it is provided with. A detailed description of the second fixture 200 will be replaced with the above description of the first fixture 100.

Meanwhile, in the first and second fixtures 100 and 200 having such a structure, the first body part 120 of the first fixture 100 and the second body part 220 of the second fixture 200 are mutually different. The same is produced. However, the width of the second threaded portion 230 of the second fixture 200 is relatively wider than that of the first threaded portion 130 of the first fixture 100.

Since the second screw part 230 of the second fixture 200 is provided as the wide screw part 230, at first glance, the size of the second fixture 200 is larger than the size of the first fixture 100. . The size here means the distance to the maximum diameter of the first and second threaded portions 130 and 230.

As such, even though the sizes of the first and second fixtures 100 and 200 are different, the first body portion 120 of the first fixture 100 and the second body portion 220 of the second fixture 200 are mutually different. Since it is the same, only one common drill (not shown) is required to drill holes H (see FIG. 3) in the alveolar bone.

For example, in FIG. 1, when the first fixture 100 is implanted after forming a hole H (see FIG. 3) in the alveolar bone by using a common drill, even when the first fixture 100 is unsuccessful, the implantation of the first fixture 100 fails. Since the second fixture 200, which is the next fixture, can be placed in the hole H (see FIG. 3) that has already been drilled without performing the drilling operation, the implant procedure can be performed more conveniently than before. This is because the first body part 120 of the first fixture 100 and the second body part 220 of the second fixture 200 are identical to each other.

In detail, referring to FIG. 2, after the hole (H, see FIG. 3) is drilled in the alveolar bone using a common drill, an implant treatment operation is performed by placing a first fixture 100 having a diameter of 4.0, for example. Even if the first fixture 100 is unsuccessful in the process of proceeding, the second fixture 200 having a diameter size of 4.5 may be implanted without drilling again. Of course, if the second fixture 200 also fails, the third and fourth fixtures (not shown) having diameter sizes of 5.0 and 5.5 may be implanted in place.

This is because the first and second fixtures 100 and 200 applied in the implant system of the present embodiment have only the widths of the screw parts 130 and 230, and the body parts 120 and 220 are made identical. The same applies to the third fixture, the fourth fixture, the fifth fixture, and the like.

Based on this configuration, the implant procedure is briefly described as follows.

First, a drill hole H having a shape as shown in FIG. 3 is formed by drilling a mounting position using a predetermined common drill (not shown). At this time, the diameter of the drill groove (H) may be formed to the width of the maximum diameter portion of the body portion 120.

Next, the first fixture 100 is first placed at the implantation position, and the first fixture 100 is inserted into the drill groove H of the alveolar bone to be implanted.

As such, when the first fixture 100 is implanted, the first fixture 100 may be inserted into the hole H (see FIG. 3) as it is to the length of the entry direction guide 160, so that the insertion entrance direction may not be changed. In other words, the initial implantation entering direction can be easily guided, so that the implant operation can be carried out more conveniently.

When the direction of the implantation is held by the entry direction guide part 160, the implantation is continued while the first fixture 100 is rotated. Then, the implantation is facilitated by the structural features of the threaded portion 130 together with the cutting edge portion 123, and when the implantation is completed, the first fixture 100 is fixed to the alveolar bone with a strong fixing force. Therefore, there is no shaking in place and it can be fused faster.

On the other hand, although this state is ideal, in some cases the placement of the first fixture 100 may lead to failure. In such a situation, the second fixture 200, which is the next fixture, may be implanted into the hole H (see FIG. 3) that is already drilled as described above without drilling again. This is because the first body part 120 of the first fixture 100 and the second body part 220 of the second fixture 200 are the same as described above and again.

When the implantation of the first fixture 100 is normally performed without failure, after the fusion to the first fixture 100 proceeds, the abutment 150 is provided at the abutment coupling unit 140 of the first fixture 100. , See FIG. 9).

First, when the abutment 150 is coupled to the abutment coupling part 140, the first coupling part 152 and the second coupling part 153 of the abutment 150 are the primary depressions 141 of the abutment coupling part 140. And are fitted into the secondary depressions 142, respectively. In this case, the rotation of the abutment 150 is prevented by the coupling between the secondary coupling portion 153 of the abutment 150 and the secondary depression 142 of the abutment coupling portion 140. In addition, the strong coupling or close coupling between the primary coupling portion 152 of the abutment 150 and the primary depression 141 of the abutment coupling portion 140 is advantageous, not only because the coupling is well loosened but also tightly coupled and sealed. Sealing eliminates the risk of infection.

After the primary coupling portion 152 and the secondary coupling portion 153 of the abutment 150 are coupled to each other while being fitted to the primary depression 141 and the secondary depression 142 of the abutment coupling portion 140, respectively. The abutment screw (not shown) is inserted into the through hole 151a of the abutment 150 and fastened to the screw groove 143 to complete the abutment of the abutment 150. Then, the implant procedure is completed by applying the final prosthesis to the abutment 150.

As described above, according to the implant system of the present embodiment, even when the initial first fixture 100 fails to be implanted, the second fixture 200, which is the next fixture, may be implanted again without a drilling operation, thereby performing an implant procedure more conventionally. It can be done conveniently.

In addition, according to the fixtures (100,200) of the first and second dental implants of the present embodiment, it is possible to easily guide the initial insertion entrance direction can be more convenient to proceed with the implant operation.

As described above, the present invention is not limited to the described embodiments, and various modifications and changes can be made without departing from the spirit and scope of the present invention, which will be apparent to those skilled in the art. Therefore, such modifications or variations will have to be belong to the claims of the present invention.

1 is a block diagram of an implant system according to an embodiment of the present invention.

FIG. 2 is an image of four fixtures having different sizes placed in holes of alveolar bone of the same size.

FIG. 3 is a perspective view schematically illustrating a process of placing the first fixture of the dental implant shown in FIG. 1.

4 and 5 are perspective and side views, respectively, of the first fixture shown in FIG. 3.

FIG. 6 is a side view of a state in which a screw part is removed from the first fixture illustrated in FIG. 5.

7 is a plan view of FIG. 4.

8 is a partially enlarged view of a screw portion.

9 is a perspective view of the rent column.

* Explanation of symbols for the main parts of the drawings

100,200: fixture 120: body

120a: tapered portion 120b: cylindrical portion

121: bevel portion 123: cutting edge portion

130: thread portion 140: abutment coupling portion

150: abutment 160: entry direction guide

161: flat portion 162: inclined portion

163: curved portion

Claims (18)

A first fixture having a first body portion and a first screw portion spirally formed in at least a portion of an outer surface of the first body portion; And And a second fixture having a second body portion identical to the first body portion, and a second screw portion spirally formed in at least a portion of an outer surface of the second body portion, the second screw portion having a different outer diameter from the first screw portion. Implant system, characterized in that. The method of claim 1, And the second screw portion is a wide screw portion larger than the width of the first screw portion. The method of claim 1, The first fixture is formed by a predetermined section upwardly from a lower end of the first body portion with respect to the direction in which the first body portion is placed, and a first entry direction for guiding an initial insertion entrance direction to the first body portion. Including a guide, The second fixture is formed by a predetermined section upward from the lower end of the second body portion with respect to the direction in which the second body portion is placed in a second entry direction for guiding an initial insertion entrance direction to the second body portion. Implant system comprising a guide. The method of claim 3, And the first and second entry direction guides are each provided by a non-screw section in which the first and second threaded portions are not formed on the first and second body portions. The method of claim 1, Each of the first and second entry direction guides, A flat portion formed flat in the horizontal direction; An inclined portion formed to have a radius wider from the circumferential surface of the flat portion upward; And And a curved portion connecting the inclined portion to each of the first and second screw portions, wherein at least one region is curved inwardly in the radial direction. The method of claim 3, Implant system, characterized in that the virtual outer line connecting the end of each of the first and second threaded portion and the first and second entry direction guide includes a tapered section and a straight section. The method of claim 6, The virtual outer line is, A first taper section formed at a lower end side of the first and second body parts to have a radius thereof upward; A first straight section formed over a predetermined length section upwards from a point where the first tapered section ends; A second taper section in which a radius thereof is widened upwardly at a point where the first straight section ends; And And a second straight section formed from an end point of the second tapered section to upper ends of the first and second body parts. The method of claim 1, Implant system, characterized in that for drilling the hole in the alveolar bone further comprises a common drill commonly used in the placement of the first fixture and the second fixture. Body portion; A screw portion formed spirally on at least a portion of an outer surface of the body portion; And Fixture of the dental implant, characterized in that it comprises an entrance direction guide portion which is formed by a predetermined section upwards from the lower end of the body portion with respect to the direction in which the body portion is placed to guide the initial insertion entrance direction to the body portion. . 10. The method of claim 9, The entry direction guide is a fixture of a dental implant, characterized in that provided by the non-screw section is not formed with the screw portion on the body portion. 10. The method of claim 9, The entrance direction guide portion, A flat portion formed flat in the horizontal direction; An inclined portion formed to have a radius wider from the circumferential surface of the flat portion upward; And Fixing the dental implant, characterized in that it comprises a curved portion connecting the inclined portion and the screw portion is formed at least one area is curved inward in the radial direction. 10. The method of claim 9, A virtual outer line connecting the end of the screw portion and the entry direction guide portion of the dental implant, characterized in that it comprises a tapered section and a straight section. The method of claim 12, The virtual outer line is, A first taper section formed at a lower end of the body portion to have a radius thereof upward; A first straight section formed over a predetermined length section upwards from a point where the first tapered section ends; A second taper section in which a radius thereof is widened upwardly at a point where the first straight section ends; And Fixture of the dental implant, characterized in that it comprises a second straight section formed from the end of the second tapered section to the upper end of the body portion. 10. The method of claim 9, The screw portion, A tip portion of the vertical or one side inclined form; And Fixtures of the dental implant, characterized in that formed on the upper or lower surface of the distal end portion to reduce the resistance torque during implantation. The method of claim 14, The curved portion is a fixture of the dental implant, characterized in that the upper and lower curved portions formed on the upper or lower surface, respectively, based on the tip portion. 10. The method of claim 9, The body portion, A tapered portion that is partially tapered so that the diameter becomes narrower from the position adjacent to the upper end of the body to the lower end; And Fixture of the dental implant, characterized in that it comprises a cylindrical portion having the same diameter so as to reach the entry direction guide portion at the end of the tapered portion. 10. The method of claim 9, A bevel portion formed at an upper corner portion of the body portion; A cutting edge portion formed in the screw portion along the circumferential direction of the body portion; And Fixture of the dental implant further comprises abutment coupling portion is provided in the inner region of the upper end of the body portion (Abutment) is coupled. The method of claim 17, The abutment coupling portion, A primary depression that is primarily recessed in the longitudinal direction of the body portion at the upper end of the body portion; A secondary depression having a hexagonal shape in which the secondary depression is formed deeper in the longitudinal direction of the body portion at a lower end of the primary depression; And Fixture of the dental implant, characterized in that in the central region of the secondary recessed portion formed along the longitudinal direction of the abutment screw (abutment screw) for fastening the abutment fastening.

Images