WO2023094934A1

WO2023094934A1 - Detachable dental implant system

Info

Publication number: WO2023094934A1
Application number: PCT/IB2022/060985
Authority: WO
Inventors: 허영구
Original assignee: 주식회사 네오바이오텍
Priority date: 2021-11-24
Filing date: 2022-11-15
Publication date: 2023-06-01

Abstract

A detachable dental implant system may include: an implant body including an implantation part implanted in an alveolar bone, and an abutment part which is positioned on the upper part of the implantation part and provides an outer inclined surface having a truncated cone shape and an inner inclined surface having an inverted truncated cone shape; and a crown medium interposed between the abutment part and a prosthesis to fix the prosthesis to the abutment part by itself, wherein the crown medium includes an accommodation space for providing a first close-contact inclined surface which is in close surface contact with the outer inclined surface and a second close-contact inclined surface which is in close surface contact with the inner inclined surface, and thus is coupled to the abutment part, and the surface contact between the outer inclined surface and the first close-contact inclined surface and the surface contact between the inner inclined surface and the second close-contact inclined surface form resistance torque disturbing the rotation of the crown medium with respect to the abutment part.

Description

【Specification】

【Title of the Invention】 Removable Dental Implant System

[Technical Field] The present invention relates to a dental implant system, and more specifically, to a prosthetic appliance such as an artificial tooth, which can be easily attached or detached without forming a screw hole, and various shock events applied to the prosthetic appliance. It relates to a removable dental implant system capable of preventing a prosthesis from being detached from an abutment. [Technical Background of the Invention] A conventional dental implant system may include a fixture placed in an alveolar bone, an abutment fixed to the fixture, and a prosthetic appliance bonded to the abutment. The prosthesis is an artificial tooth and is integrally combined with the abutment by an adhesive such as dental cement, and a screw hole is formed in the prosthesis to fix or separate the prosthesis together with the abutment to a fixture. Korean Patent Registration No. 10-0537219, etc. discloses a method of combining an abutment and a prosthesis with cement in a state where the abutment is placed on a fixture, and using a screw hole formed in the prosthesis. In the conventional dental implant system, problems such as repair or replacement of artificial teeth, abutments, fixtures, etc. may occur in the dental field due to, for example, a fracture of a connecting screw or various other reasons. To solve this problem, re-drilling the screw hole connected to the connecting screw in the artificial tooth, loosening or removing the connecting screw, replacing the artificial tooth, abutment, etc., re-fastening the connecting screw, Fill the drilled hole with resin, etc. Refilling may be necessary. In this regard, Korean Patent Registration No. 10-2323729 discloses a dental implant system. The dental implant system has a screw hole formed vertically in the cap, and a C-ring-shaped breakaway prevention part and a ring-shaped sealing part are provided on the outer surface of the abutment to prevent complete adhesion between the cap and the abutment. can do. In addition, since the separation prevention part and the sealing part are formed along the circumference of the outer surface of the abutment and occupy a relatively large area, sufficient surface contact can be achieved when the abutment is formed in a small size with a dimension of 5 mm or less. cannot form Surface contact between the abutment and the cap cannot be formed unless the release prevention part is made without errors. For example, if the separation prevention part is slightly large or twisted, a gap is formed between the abutment and the cap, and if the separation prevention part is minutely small, the coupling between the abutment and the cap may be shaken.

【Detailed description of the invention】

[Technical problem] The present invention can combine an abutment and a prosthesis only by surface contact using external and internal slopes without forming a screw hole in the prosthesis, and the prosthesis can be easily removed from the structure of the abutment rather than the fixture Provided is a detachable dental implant system that can be separated and repaired or replaced. The present invention provides a detachable dental implant system capable of maximally improving bonding force in bonding using surface contact. The present invention provides a detachable dental implant system capable of preventing instantaneous lifting of a prosthesis in addition to bonding force by surface contact. The present invention is a detachable type that facilitates separation and installation of a prosthesis even when a separate prosthesis does not move in a direction consistent with the axial direction of the abutment even when the fixture is tilted or two or more fixtures are connected by a bridge. A dental implant system is provided. [Technical Solution] According to an exemplary embodiment of the present invention, the detachable dental implant system is located on the upper part of the implantation part to be placed in the alveolar bone and the implantation part, and has a truncated cone-shaped outer inclined surface and an inverted truncated cone-shaped internal inclined surface. It includes an implant body including an abutment part providing a crown and a crown medium that is interposed between the abutment part and the prosthesis and fixes the prosthesis to the abutment part by itself, and the crown medium is in close contact with the external inclined surface. Provides a first close-inclination surface and a second close-inclination surface in close contact with the inner inclined surface to include an accommodation space coupled to the abutment portion, and surface contact between the outer inclined surface and the first close-inclined surface and the inner inclined surface The surface contact between the second close inclined surfaces may form a resistance torque that hinders the rotation of the crown medium relative to the abutment. The crown mediator can be joined by surface contact on the outside and inside of the abutment, and the outer and inner slopes can prevent peeling of the crown mediator at different heights. In this embodiment, surface contact may mean a fully adhered state, and, as in the dental implant system of Korean Patent Registration No. 10-2323729, a C-ring-shaped separation prevention unit to the outer surface of the abutment unit and a ring-shaped sealing portion is provided between the cap and the abutment portion. It can be said that it is different from preventing complete adhesion. Therefore, in the present embodiment, the outer inclined surface and the first close-inclined surface can be maintained in full contact without intervening substances such as C-rings or packings. The crown medium and the abutment part can be bound together without cement or adhesive, and the prosthesis can be detachably coupled to the abutment part without forming a screw hole in the prosthesis. The fixture and the abutment portion may be coupled by screw coupling, and the coupling method may be coupled in various ways such as an internal method or an external method. The outer inclined surface may be formed in a truncated cone shape, where the truncated cone shape may be understood as a concept including a truncated cone or truncated pyramid shape. Likewise, the inner inclined surface may also be formed in the shape of an inverted truncated cone, or may be formed in a truncated cone or truncated pyramid shape. The outer inclined surface and the inner inclined surface may be formed identically, similarly or differently. In this embodiment, the outer inclined surface and the inner inclined surface may be formed at different heights, and the lower end of the inner inclined surface may be positioned higher than the lower end of the external inclined surface. Since the hooking position between the inner inclined surface and the second close inclined surface is different from the hooked position between the outer inclined surface and the first close inclined surface, it is possible to resist mutual separation. For example, the height (hl) from the upper end of the abutment part to the lower end of the inner inclined surface may be shorter than the height (h2) from the lower end of the inner inclined surface to the lower end of the external inclined surface. The angle of the external inclined surface (01) and the internal inclined surface angle (02) with respect to the central axis of the abutment part can be formed from 4 degrees to 15 degrees. The slope angles (01, 02) are in opposite directions, but It can be understood as a positive number, and if the angle is less than 4 degrees, the difficulty of the system is excessively increased because the prosthesis and abutment must be coupled almost only in the axial direction, and if the angle is greater than 15 degrees, the prosthesis and abutment Since the coupling force between the abutment parts is weakened, the prosthesis can be easily separated from the abutment part even with a small external force. For reference, in this specification, the angle of the inclined plane is based on the cross section passing through the central ridge of the abutment part, and can be understood as an acute angle to the central ridge regardless of the top and bottom. In addition, the angle 01 of the external inclined surface and the angle 02 of the internal inclined surface with respect to the central axis of the abutment portion may be formed with a deviation of about 3 degrees. In order to form the inner inclined surface, a ring-shaped protrusion may be formed on the ceiling of the accommodation space of the crown medium, and the outer surface of the ring-shaped protruding part may be defined as a second close inclined surface to form surface contact with the inner inclined surface. In addition, a distance fixing portion extending downward from the ceiling of the accommodation space and entering the inner space of the abutment unit may be formed at the center of the ring-shaped protrusion. The end of the distance fixing part can be fixed in the inner space of the abutment part, and it can prevent lifting between the inclined surfaces that make surface contact by limiting the coupling distance between the crown medium and the abutment part. The distance fixing unit may be provided in a column shape having protrusions or grooves formed at an end thereof, and grooves or protrusions engaged with the protrusions or grooves of the distance fixing unit may be formed in the inner space. In addition, the distance fixing unit may be provided in a cylindrical shape with an elastic leg formed at an end thereof, a protrusion formed at an end of the elastic leg, and a groove engaged with the protrusion of the elastic leg may be formed on an inner wall of the inner space. A female screw part can be formed in the lower part of the inner space below the groove that engages with the elastic leg, and when temporarily fixing the impression coping, etc. in addition to the abutment part, it is possible to fix the parts that fit the female screw part without having to form a distance fixing part individually. can A sealing inclined surface having an inclined angle smaller than the angle (01) of the external inclined surface may be further formed below the external inclined surface.

[Effects of the Invention] The removable dental implant system of the present invention does not permanently bond the prosthetic appliance and the abutment part, and does not use a screw to connect the prosthetic appliance and the abutment part, so there is no need to form a screw hole in the prosthetic appliance. does not exist. The detachable dental implant system of the present invention should be able to easily separate the prosthesis from the abutment part and prevent the prosthesis from being separated by an unexpected event. To this end, the coupling by the three-dimensional surface contact of the present invention can be formed inside and outside the abutment part, and full-scale contact can be maintained without using a C-ring or the like. In some cases, it is not possible to completely prevent the prosthesis from falling off only by surface contact, so in the present invention, by adding a distance fixing part, it is possible to prevent the crown medium and the prosthesis from easily lifting from the abutment part. The distance limit between the crown medium and the crown medium is configurable. Even in forming the distance fixing part, it is possible to prevent the distance fixing part from being affected by external force by locating the distance fixing part in the inner space instead of the outer surface of the abutment part, and by combining or integrally forming the distance fixing part with the crown medium, such as height and width It may be possible to produce a small size of about 5 mm. Because the crown mediator can be manufactured in a small size, it can be applied to implants of small teeth such as front teeth. The detachable dental implant system of the present invention can form a small crown mediator due to the inner and outer slopes and the distance fixing part, and can improve the bonding force using surface contact as much as possible by limiting the distance by the distance fixing part. Even if the crown media and abutment are made relatively short, they can withstand lateral pressure well, and there is no need to delete the media. In addition, since the distance fixing part is rooted and fixed in the crown mediator, when the crown mediation and the prosthesis approach the abutment part, the end of the distance fixing part is partially deformed along the inner space or the inner slope of the abutment part, and the axis Access from an inclined direction other than the direction may also be possible. The present invention provides a detachable dental implant system capable of preventing instantaneous lifting of a prosthesis in addition to bonding force by surface contact. Even when the implanted state of the fixture is tilted using an external or internal inclined surface or when two or more inclined fixtures are connected with a bridge, the prosthesis can be maintained even if a separate prosthetic appliance does not move in the same direction as the axial direction of the abutment part. Separation and installation can be easy.

[Brief description of the drawings] Figure 1 is a view for explaining a removable dental implant system according to an embodiment of the present invention. FIG. 2 is a view for explaining a cross section of the detachable dental implant system of FIG. 1 . FIG. 3 is a view for explaining a coupling structure of the detachable dental implant system of FIG. 1 . FIG. 4 is a view for explaining a coupling process of the detachable dental implant system of FIG. 1 . FIG. 5 is a view for explaining the effect of the removable dental implant system of FIG. 1 . 6 is a view for explaining a crown mediator of a detachable dental implant system according to an embodiment of the present invention. FIG. 7 is a view for explaining a coupling process of the detachable dental implant system using the crown mediator of FIG. 6 . FIG. 8 is a view for explaining the effect of the removable dental implant system of FIG. 6 . 9 is a view for explaining a detachable dental implant system according to an embodiment of the present invention. FIG. 10 is a view for explaining a cross section of the detachable dental implant system of FIG. 9 . FIG. 11 is a view for explaining a coupling structure of the detachable dental implant system of FIG. 9 . FIG. 12 is a view for explaining a coupling process of the detachable dental implant system of FIG. 9 . 13 to 15 are removable dental implant sheaths according to an embodiment of the present invention It is a drawing for explaining another use case of the system. 16 is a view for explaining a detachable dental implant system according to an embodiment of the present invention. 17 is a view for explaining a detachable dental implant system according to an embodiment of the present invention. 18 is a view for explaining a detachable dental implant system according to an embodiment of the present invention. FIG. 19 is a view for explaining a cross section of the detachable dental implant system of FIG. 18 . FIG. 20 is a view for explaining a coupling structure of the detachable dental implant system of FIG. 18 . FIG. 21 is a view for explaining a coupling process of the detachable dental implant system of FIG. 18 .

[Details for carrying out the invention] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, but the present invention is not limited or limited by the embodiments. For reference, in the present description, the same numbers refer to substantially the same elements, and descriptions may be made by citing contents described in other drawings under these rules, and contents determined to be obvious to those skilled in the art or repeated may be omitted. 1 is a view for explaining a removable dental implant system according to an embodiment of the present invention, and FIG. 2 is a cross-section of the removable dental implant system of FIG. 1. FIG. 3 is a view for explaining the coupling structure of the removable dental implant system of FIG. 1, FIG. 4 is a view for explaining the coupling process of the removable dental implant system of FIG. 1, and FIG. 1 is a view for explaining the effect of the detachable dental implant system. 1 to 5, the removable dental implant system 100 according to an embodiment of the present invention includes a fixture 110, an abutment 120 and a crown mediator 140 as an implantation part. can do. The fixture 110 is a structure to be placed in the alveolar bone, and when the fixture 110 is placed, the crown medium 140 integrally joined with the abutment 120 and the prosthesis 20, which is an artificial tooth, to the top thereof ) can be fixed. The fixture 110, the abutment 120, and the crown mediator 140 may be formed using a titanium material, and the prosthesis 20 may be formed using a composite resin or ceramic. In this embodiment, the abutment 120 may be coupled with the fixture 110 in an internal manner, and the crown mediator 140 may be coupled to the upper part with the body 126 tapered downward. There is, and a male screw 128 may be formed at the bottom. Since the fixture 110 is placed in the alveolar bone, it can be affected by various variables depending on the patient's physical condition or surgical conditions, and even after being placed, the position or angle at which it is placed can be changed even in the process of being stabilized. For example, the condition of osseointegration of the fixture may be changed by the occlusal force. Therefore, in this embodiment, the abutment 120 may be provided separately, and after the fixture 110 is placed, the abutment 120 may be fixed to the fixture 110 by screwing. Considering the patient's oral structure and fixture placement conditions in various ways, the operator The type or dimensions of the abutment 120 may be determined later, and the original design may be maintained, but may be changed differently from the original design. The upper part of the abutment 120 provides an external inclined surface 122 of a cone shape to the outside, and an internal space 130 with an open top and an internal inclined surface 132 formed on the upper part of the internal space 130 to the inside. ) can be provided. Even in the conventional abutment, there is a space corresponding to the internal space, but in the conventional abutment, the corresponding space is a space for the screw to pass through the prosthesis, whereas in the present embodiment, the internal space 130 is the prosthesis ( 20), and the inner inclined surface 132, the second close inclined surface 152, and other binding structures are blocked from the outside to function as a protective space capable of forming a stable bond. In this embodiment, the outer inclined surface 122 and the first close-inclined surface 142 are formed in a truncated cone shape, but may be formed in a truncated pyramid shape in other embodiments. In addition, the outer inclined surface 122 and the first close-inclined surface 142 maintain full contact, and unlike the prior art, there is no element that interferes with the close contact of the two inclined surfaces, such as a C-ring, sealing, or packing. status can be maintained. In addition, a sealing inclined surface 123 formed at an inclined angle smaller than the angle (01) of the external inclined surface 122 may be further formed at the lower part of the external inclined surface 122, and the sealing inclined surface 123 is also formed on the first close inclined surface 142. ), a vertical surface or an inclined surface corresponding to may be formed. The outer inclined surface 122 forms an inclined slope of about 4 to 15 degrees with respect to the central axis of the abutment 120, but the sealing inclined surface 123 has a smaller angle than the external inclined surface 122 or an angle of about 4 degrees or less. An inclination angle can be formed. Since the sealing slope 123 is formed on the lower part of the outer slope 122, it is about 4 degrees or less. Even if formed at an inclination angle of , the coupling between the crown mediator 140 and the abutment 120 may not be disturbed, and foreign substances may be prevented from entering between the crown mediator 140 and the abutment 120. . In addition, minute fluctuations between the crown mediator 140 and the abutment 120 can be reduced. The crown mediator 140 and the abutment 120 can maintain a combined state by the surface contact of the inclined surface facing the front, and the close contact between the precisely machined external inclined surface 122 and the first close inclined surface 142 , it is possible to form very close surface contact by friction or negative pressure. The crown mediator 140 may form an accommodation space 145 open to the bottom like a cap, and its outer surface may be bonded to the prosthesis 20. A plurality of irregularities 146 may be formed on the outer surface of the crown mediator 140 in order to strengthen the bonding with the prosthesis 20. 2 and 4, the crown mediator 140 may provide an accommodation space 145 capable of accommodating the upper portion of the abutment 120. The receiving space 145 may form a first close-fitting inclined surface 142 that makes surface contact with the outer inclined surface 122 of the abutment 120, and a ring-shaped protrusion 150 is formed in the center of the ceiling of the receiving space. ) is formed, and the second close-inclined surface 152 may be provided as an outer surface thereof. Referring to FIG. 4 , a state (a) before the prosthesis 20 and the crown mediator 140 are coupled to the top of the abutment 120 and a state (b) after the coupling are shown. The crown medium 140 according to the present embodiment includes a ring-shaped protrusion 150 formed in the center of the ceiling of the accommodation space 145, and the outer surface of the ring-shaped protrusion 150 is the inner inclined surface 132 of the abutment 120. ) It can be formed as a second close contact inclined surface 152 corresponding to. In the inner space 130 of the abutment 120, an inverted truncated inner inclined surface 132 may be formed as an inner wall. As a result, a more stable coupling can be formed by surface contact between the outer inclined surface 122 and the first close inclined surface 142 and surface contact between the inner inclined surface 132 and the second close inclined surface 152. The outer inclined surface 122 and the inner inclined surface 132 may be formed at different heights. For example, the lower end of the inner inclined surface 132 may be positioned higher than the lower end of the external inclined surface 122 . Therefore, as shown in FIG. 5, the hooking position (B) between the inner inclined surface and the second close inclined surface is different from the hooking position (A) between the outer inclined surface and the first close inclined surface, so mutual separation can be resisted. Specifically, the height (hi) from the upper end of the abutment 120 to the lower end of the inner inclined surface may be shorter than the height 112 from the lower end of the internal inclined surface to the lower end of the external inclined surface. When the angle (01) of the outer inclined surface and the angle (02) of the inner inclined surface with respect to the central axis of the abutment, preferably, the two angles (01, 02) can be formed equal, but the central axis of the abutment The angle (01) of the external inclined surface and the angle (02) of the internal inclined surface can be formed with a deviation of about 3 degrees. ( -3 < (01-02) < 3) Also, the center of the abutment Both the angle of the outer inclined surface (01) and the inner inclined surface (02) with respect to the axis can be formed in the range of about 4 degrees to about 15 degrees. Here, the angles (01, 02) of the inclined planes may be understood as positive numbers although the directions are opposite, and if the angle is less than 4 degrees, the prosthesis 20 and the abutment 120 should be coupled only in the axial direction Therefore, the difficulty of the system may be excessively increased, and if the angle is greater than 15 degrees, the prosthesis (20) and the abutment The bonding force due to the surface contact between the 120 is weakened, so that the prosthesis 20 can be easily separated from the abutment 120 even with a very small external force. Surface contact between the outer inclined surface 122 and the first close inclined surface 142 as well as between the inner inclined surface 132 and the second close inclined surface 152 causes the prosthesis to separate from the abutment 120 due to an unexpected event. can prevent it from happening. As shown in FIG. 5, events that may occur in the implant system may be caused by repeated chewing (a), and may also be caused by pushing or twisting between teeth (b). Looking at (a) of FIG. 5, when the eccentric force (F) acts on the top of the prosthesis 20, the torque is centered on the end (0) between the adjacent crown mediator 140 and the abutment 120. may occur. Assuming that the event torque (R1) due to the eccentric force (F) is F*Di, the resistive torque between the crown medium 140 and the abutment 120 at the opposite point (A) can be expressed as fn*di there is. In addition, resistance torque may also occur at a point closer than that, which can be expressed as fl2*d2. If it is assumed that there is no resistance torque between the inner slope 132 and the second close slope 152, the resistance torque Peeling will not occur to the extent that ( fn*di) can overcome the event torque (F*Di) generated, but if the event torque (F*Di) is greater than the maximum value of the resistance torque (f _n *di), the peeling off will occur. In addition, if momentary lifting occurs between the crown mediator 140 and the abutment 120 due to sudden shock or repeated load, the prosthesis 20 is futile with the crown mediator 140. can be peeled off However, since the resistance force (f 12) at point (B) occurs at a different distance and in a different direction, it is prevented from being momentarily spread between the crown medium 140 and the abutment 120 due to sudden impact or repeated load can do. In addition, even if a continuous load is applied, the resistance torque for the event torque (F*Di) is the resistance torque (fn*di) due to surface contact with the inclined surface at point A and the resistance torque due to surface contact with the inclined surface at point B ( Since it is formed by the sum of fi2*d2), it is possible to prevent the prosthesis 20 from being easily peeled off. Referring to (b) of FIG. 5 , it can be assumed that the same force (F) acts on the side of the prosthesis 20 rather than on the top. Even in this case, the event torque (R2) due to the eccentric force (F) can be expressed as F*D2, and a relatively larger event torque (F*D2) can be applied. In this case, torque may be generated around the far end (0) between the crown mediator 140 and the abutment 120. Here, assuming that there is no resistive torque between the inner inclined surface 132 and the second close inclined surface 152, peeling does not occur to the extent that the resistive torque (f21*dl) can overcome the event torque (F*D2) generated. However, since a relatively large event torque (F*D2) is applied, it may not be easy to overcome the event torque (F*D2) with resistance torque (f21*dl). However, since the resisting force (fi2) between the inner inclined surface 132 and the second close inclined surface 152 occurs at a different distance and in a different direction, the crown medium 140 and the abutment due to impact or repeated load in a specific direction Instantaneous lifting between the ment 120 may be prevented. Also, even if a continuous load is applied, the resistance torque for the event torque (F*D2) Since is formed by the sum of the resistive torque (f2i*di) due to the contact with the inclined surface at point A and the resistive torque (f22*d2) due to the contact with the inclined surface at point B, the prosthesis 20 is easily peeled off. that can be prevented Stable coupling between the abutment 120 and the crown mediator 140 can be further strengthened by further forming the distance fixing part 160 in the inner space 130 of the abutment 120. 6 is a view for explaining a crown mediator of the removable dental implant system according to an embodiment of the present invention, and FIG. 7 is a view for explaining a coupling process of the removable dental implant system using the crown mediator of FIG. 6 , FIG. 8 is a view for explaining the effect of the detachable dental implant system of FIG. 7 . 6 to 8, the crown mediator 140 'according to this embodiment includes a distance fixing part 160 at the center of the ring-shaped protrusion 150, and the distance fixing part 160 has an accommodation space ( 145) may extend downward from the center of the ceiling. A ring-shaped protrusion 150 is formed around the distance fixing part 160, and the outer surface of the ring-shaped protrusion 150 is formed as a second close-inclined surface 152 corresponding to the inner inclined surface 132 of the abutment 120. can do. In addition to the surface contact between the outer inclined surface 122 and the first close inclined surface 142 and the surface contact between the inner inclined surface 132 and the second close inclined surface 152, the distance fixing part 160 is provided with the abutment 120 Because the distance between the crown mediator (140 ') is limited, the implant system can form a more stable bond. The distance fixing part 160 may be integrally formed or combined with the crown mediator 140 ', and its end may have a relatively large dimension and be formed bluntly. of the inner space (130) A space capable of accommodating the end of the distance fixing unit 160 may be formed on the floor, and an elastic piece 134 capable of fixing the end of the distance fixing unit 160 may be provided at the entrance of the space. 7 shows the process before and after the end of the distance fixing part 160 is coupled to the elastic piece 134, and the end of the distance fixing part 160 passes through the elastic piece 134 and is temporarily fixed. The outer inclined surface 122 of the butment 120 and the first close inclined surface 142 of the crown medium 140, as well as the inner inclined surface 132 and the second close inclined surface 152 are fixed to each other by a fixing force other than gravity. You can stay close. In this embodiment, both the angle of the external inclined surface (01) and the internal inclined surface angle (02) with respect to the central axis of the abutment can be formed in the range of about 4 degrees to 15 degrees, and the central axis of the abutment The angle (01) of the outer inclined surface and the angle (02) of the inner inclined surface may be formed with a deviation of about 3 degrees. (-3 < (01-02) < 3) In this embodiment, the inner space 130 ) may be used as a space for maintaining the distance between the crown mediator 140 and the abutment 120 by entering the distance fixing unit 160 . Actually, in this embodiment, since the distance fixing part 160 is formed in the center of the ceiling of the accommodation space, it may be difficult to form a screw hole in the prosthesis 20. Referring to FIG. 8, as the coupling between the distance fixing part 160 and the elastic piece 134 is added in the inner space 130, the coupling force between the crown medium 140' and the abutment 120 can be further strengthened. . Referring to (a) of FIG. 8, the eccentric force (F) acts on the top of the prosthesis 20, and the torque is centered on the end (0) between the adjacent crown mediator (140') and the abutment (120). can happen Assuming that the event torque due to the eccentric force (F) is (F*Di), the resistance torque for the event torque (F*Di) is the resistance torque ( f _n *di), the sum of the resistive torque (fl2*d2) due to surface contact between the inner inclined surface and the second close inclined surface at point B, and the resistive torque (fl3*d3) by the distance fixing part (160) at point C. Since it is formed, peeling of the prosthesis 20 can be more stably prevented. In particular, since the axial resistive force (fi3) of the abutment 120 of the distance fixing part 160 can exert a greater effect than other resistive forces, the fixing force of the distance fixing part 160 can have a considerably large effect. there is. As shown in (b) of FIG. 8, even if a larger event torque (F*D2) occurs, the resistance torque for the event torque (F*D2) is resistance due to surface contact between the external inclined surface and the first close inclined surface at point A. The torque (f2i*di), the resistance torque (f22*d2) by the surface contact between the inner inclined surface and the second close inclined surface at point B, and the resistance torque (f23*d3) by the distance fixing part (160) at point C Since it is formed as a sum, peeling of the prosthesis 20 can be more stably prevented. In addition, since the direction of the resistance force (fn) at point A and the direction of the resistance force (fi2) at point B are different, it may be possible to respond to various variables arising from the difference according to the direction of the resistance force. 9 is a view for explaining a detachable dental implant system according to an embodiment of the present invention, FIG. 10 is a view for explaining a cross-section of the detachable dental implant system of FIG. 9, and FIG. It is a view for explaining the coupling structure of the detachable dental implant system, and FIG. 12 is a diagram for explaining the coupling process of the detachable dental implant system of FIG. 9 to 12, the removable dental implant system 200 according to an embodiment of the present invention may include a fixture 210, an abutment 220 and a crown mediator 240. . In this embodiment, the abutment 220 may be coupled with the fixture 210 in an internal manner, and the crown medium 240 may be coupled to the upper part with the tapered body 226 as the center, and to the lower part. A male thread 228 may be formed. In this embodiment, the abutment 220 may be provided separately, and after the fixture 210 is placed, the abutment 220 may be fixed to the fixture 210 by screwing. The upper part of the abutment 220 may provide a cone-shaped outer inclined surface 222 and an inner space 230 with an open top. The inner space 230 may be used as a space for maintaining the distance between the crown medium 240 and the abutment 220 by entering the distance fixing unit 260 . The crown mediator 240 may form an accommodation space open to the bottom like a cap, and may be bonded to the prosthesis 20 on the outside. 10 and 12, the crown medium 240 provides an accommodation space capable of accommodating the upper part of the abutment 220, and the outer inclined surface 222 of the abutment 220 and the entire surface of the accommodation space A first close-inclined surface 242 forming surface contact is formed, and a distance fixing part 260 fixed to the ring-shaped protrusion 250 with an interference fit can be fixed downward at the center of the ceiling of the accommodation space. The distance fixing part 260 is formed in a cylindrical shape as a whole, and includes 2 to 6, preferably 4, branched elastic legs 262 at the bottom, and can be provided with elastic deformation. At the end of the elastic leg 262, a protrusion 264 may be formed outwardly, and the elastic leg Corresponding to the protrusion 264 of 262, a cylindrical groove 234 may be formed on the inner wall of the inner space 230. In this embodiment, the distance fixing part 260 may be formed using nickel-titanium (Ni-Ti) having high elasticity. Referring to FIG. 12, the crown medium 240 according to this embodiment forms a ring-shaped protrusion 250 in the center of the ceiling, and the ring-shaped protrusion 250 fixes the distance fixing part 260 to the inside, while to the outside. may form the second close-inclined surface 252 . Corresponding to the second close inclined surface 252 of the ring-shaped protrusion 250, the abutment 220 has the same inclined angle as the second close inclined surface 252 toward the upper part of the inner wall of the inner space 230. , can be formed as an inclined plane. A hexa-shaped groove may be formed on the inner wall of the inner space 230, and when the abutment 220 is fixed to the fixture 210, a hexa-shaped tool is bound to the inner space 230 to form the abutment The ment 220 may be fixed. In addition, a female screw portion 236 may be formed below the circumferential groove 234 in the inner space 230 . When using a healing cap or impression coping, the female screw part 236 can be used for temporarily fixing the corresponding part by using a screw-type coupling instead of a distance fixing part. As described above, the outer inclined surface 222 and the inner inclined surface 232 of the abutment 220 can form surface contact with the first close inclined surface 242 and the second close inclined surface 252, respectively. The elastic legs 262 of the lee fixing part 260 may enter along the inner wall of the inner space 230 and be bound to the groove 234 while being restored in the circumferential groove 234 . The inner inclined surface 232 of the inner space 230 may be provided in an inverted truncated shape, and may be formed to have a predetermined inclination angle 02 with respect to the central axis of the abutment 220. By forming the outer inclined surface 222 and the inner inclined surface 232, it is possible to insert and remove a prosthesis connected to two or more non-parallel abutments in a bridge structure. For this, reference may be made to the drawings and descriptions of FIGS. 13 to 15 . The end of the distance fixing part 260 is formed as an elastic leg 262, so that the assembly of the prosthesis 20 and the crown mediator 240 can enter the abutment 220 in a slightly inclined direction from the axis. , while the elastic leg 262 is deformed within an allowable range, it is possible to ride the inner wall of the inner space 230 and enable stable coupling. The outer inclined surface 222 and the inner inclined surface 232 of the abutment 220 are connected to the first close inclined surface 242 and the second close inclined surface 252 of the crown medium 240 by the distance fixing unit 260. It can maintain a stable close-fitting state. These inclined surfaces maintain full contact, and unlike the prior art, they can maintain contact on all surfaces without elements that hinder the close contact of the two inclined surfaces, such as C-rings, seals, or packing. In addition, a ceiling inclined surface formed at an inclined angle smaller than the angle (01) of the external inclined surface 222 may be further formed below the external inclined surface 222, and a vertical surface or an inclined surface corresponding to the sealing inclined surface is also formed on the first close inclined surface 242. can be formed. The outer inclined surface 222 forms an inclined angle of about 4 to 15 degrees with respect to the central axis of the abutment 220, but the sealing inclined surface forms a smaller angle than the external inclined surface 222 or an inclined angle of about 4 degrees or less. can do. 13 to 15 are views for explaining other usage examples of the detachable dental implant system according to an embodiment of the present invention. 13 to 15, in a state where two or more fixtures 210 are placed It is possible to manufacture a prosthesis (30) connecting the crown mediator (240) corresponding to each of the bridges. In the drawing, two fixtures 210 are placed in the alveolar bone, and originally, it is desirable to be placed in parallel and perpendicular to each other, but due to some variable or intention, it can be assumed that the fixtures 210 are spread in opposite directions to each other. can 13, the bridge prosthesis 30 and the crown mediator 240 can access through the external inclined surface 222, and the end of the elastic leg 262 of the distance fixing part 260 is the abutment 220 ) From the end of the inner inclined surface 232, it is possible to enter the inside. In FIG. 14 , while the prosthesis 30 approaches the abutment 220, the elastic leg 262 located inside may be partially deformed like a bow to enter along the inner inclined surface 232 and the inner wall of the inner space. And, as shown in FIG. 15, while the crown mediator 240 completely adheres to the abutment 220, the projection of the elastic leg 262 is seated in the circumferential groove 234, and the first close-inclined surface 242 may adhere to the outer inclined surface 222 and the second close inclined surface 252 may adhere to the inner inclined surface 232 . In this way, the inclination of the outer inclined surface and the first close inclined surface and the inner inclined surface and the second close inclined surface 252 form surface contact over a relatively large area, and the prosthesis is slightly deviated from the axial direction of the abutment. Even if it is entered at an angle, it is possible to combine the prosthetic appliance and the abutment. In the present invention, the structure of the distance fixing part and the corresponding elastic piece or elastic groove can be formed in various ways. For example, the elastic structure of the distance fixing unit of FIG. 11 may be applied to the elastic piece of FIG. 7 . 16 illustrates a removable dental implant system according to an embodiment of the present invention. It is a drawing for Referring to FIG. 16, the elastic piece 134' according to the present embodiment may be formed in a cylindrical shape, a plurality of elastic legs may be formed at the top, and protrusions may be formed inward of the elastic legs. The elastic piece 134' may be fixed inside the abutment 120 in an interference fit manner, and a female screw portion 136' may be further formed below the fixed position of the elastic piece 134'. there is. The female screw part 136' can be used for temporarily fixing a healing cap or an impression coping. The distance fixing part 160 may form a distance fixing and close contact between the crown mediator 140' and the abutment 120 while being inserted into the elastic piece 134'. By combining the distance fixing part 160 and the elastic piece 134', the first close inclined surface 142 and the second close inclined surface 152 of the crown medium 140' are the outer inclined surface of the abutment 120. 122 and the inner sloped surface 132 to form stable surface contact. 17 is a view for explaining a detachable dental implant system according to an embodiment of the present invention. As shown in FIG. 17, the removable dental implant system may include a fixture 210', an abutment 220', a crown mediator 240, a ring-shaped protrusion 250, and a distance fixture 260. Surface contact between the inclined surface 222 and the first close inclined surface 242 and surface contact between the inner inclined surface 232 and the second close inclined surface 252 may be used. Unlike the previous embodiment, the fixture 210 'and the abutment 220' can be coupled in an external manner using a hexagonal protrusion, and even if the external manner of coupling is formed, the inclined surface It is possible to form a surface contact of and a distance limiting coupling of the distance fixing part. For reference, in this embodiment, a protrusion is formed on the distance fixing part and a circumferential groove is formed in the inner space of the abutment, but in some cases, it is also possible to form a groove on the distance fixing part and form a protrusion on the inner wall of the inner space. possible. 18 is a view for explaining a detachable dental implant system according to an embodiment of the present invention, FIG. 19 is a view for explaining a cross-section of the detachable dental implant system of FIG. 18, and FIG. 20 is a view of FIG. It is a view for explaining the coupling structure of the detachable dental implant system, and FIG. 21 is a view for explaining the coupling process of the removable dental implant system of FIG. 18 to 21, the removable dental implant system 300 according to an embodiment of the present invention includes an implant body 310 in which an implantation part 315 and an abutment part 320 are integrally provided. ) and a crown mediator (340). In this embodiment, the abutment part 320 may be formed on top of the placement part 315, and the crown mediator 340 may be coupled to the top. The abutment part 320 may provide a cone-shaped outer inclined surface 322 and an inner space 330 with an open top. The inner space 330 may be used as a space for maintaining the distance between the crown mediator 340 and the abutment part 320 by entering the distance fixing part 360 . The crown mediator 340 may form an accommodation space open to the bottom like a cap, and may be bonded to the prosthesis 20 on the outside. 19, the crown medium 340 provides an accommodation space capable of accommodating the upper part of the abutment part 320, and the outer slope 322 of the abutment part 320 and the entire surface in the accommodation space. A first close inclined surface 342 forming surface contact is formed, and a distance fixing part 360 fixed to the ring-shaped protrusion 350 by an interference fit may be fixed downward in the center of the ceiling of the accommodation space. The distance fixing part 360 is formed in a cylindrical shape as a whole, and includes 2 to 6, preferably 4, branched elastic legs 362 at the bottom, and may be provided with elastic deformation. A protrusion 364 may be formed at an end of the elastic leg 362 outwardly, and a cylindrical groove 334 is formed on the inner wall of the inner space 330 corresponding to the protrusion 364 of the elastic leg 362. It can be. In this embodiment, the distance fixing part 360 may be formed using nickel titanium (Ni-Ti) having high elasticity. 21, the crown medium 340 according to this embodiment forms a ring-shaped protrusion 350 in the center of the ceiling, and the ring-shaped protrusion 350 fixes the distance fixing part 360 to the inside, while to the outside. may form a second close contact inclined surface (352). Corresponding to the second close-inclined surface 352 of the ring-shaped protrusion 350, the abutment part 320 has the same inclined angle as the second close-inclined surface 352 toward the upper part of the inner wall of the inner space 330. , can be formed as an inclined plane. A hexa-shaped groove may be formed on the inner wall of the inner space 330, and when fixing the abutment body 310, an additional hexa-shaped tool may be used. In addition, hex or polygonal protrusions may be further formed on the lower part of the second close contact inclined surface 352 corresponding to the hexa-shaped groove. Hexa or polygonal protrusions are bound to the hexa-shaped grooves, so that the crown mediator 340 and the prosthetic part can function as a precise seating or rotation restriction. In addition, a female screw portion 336 may be formed below the circumferential groove 334 in the inner space 330 . When using a healing cap or impression coping, the female screw part 336 is It can be used for the purpose of temporarily fixing the corresponding part using a nin screw-type coupling. As described above, the outer inclined surface 322 and the inner inclined surface 332 of the abutment part 320 can form surface contact with the first close inclined surface 342 and the second close inclined surface 352, respectively, The elastic legs 362 of the distance fixing part 360 may enter along the inner wall of the inner space 330 and be bound to the circumferential groove 334 while being restored. The inner inclined surface 332 of the inner space 330 may be provided in an inverted truncated cone shape, and may be formed to have a predetermined inclination angle 02 with respect to the central axis of the abutment part 320. By forming the outer inclined surface 322 and the inner inclined surface 332, it is possible to insert and remove a prosthesis connected to two or more non-parallel abutment parts in a bridge structure. For this, reference may be made to the drawings and descriptions of FIGS. 13 to 15 . The end of the distance fixing part 360 is formed as an elastic leg 362 so that the assembly of the prosthesis 20 and the crown mediator 340 can enter the abutment part 320 in a slightly inclined direction from the axis. , The elastic leg 362 may be deformed within an allowable range while riding on the inner wall of the inner space 330 to enable stable coupling. The outer inclined surface 322 and the inner inclined surface 332 of the abutment part 320 by the distance fixing part 360 are the first close inclined surface 342 and the second close inclined surface 352 of the crown medium 340 can maintain a stable adherence to the These inclined surfaces maintain full contact, and unlike the prior art, they can maintain contact on all surfaces without elements such as C-rings, seals, or packings that hinder the close contact of the two inclined surfaces. In addition, a sealing inclined surface formed at an inclined angle smaller than the angle (01) of the external inclined surface 322 may be further formed below the external inclined surface 322, and also in the first close inclined surface 342. A vertical surface or an inclined surface corresponding to the sealing inclined surface may be formed. The outer inclined surface 322 forms an inclined angle of about 4 to 15 degrees with respect to the central axis of the abutment part 320, but the sealing inclined surface has a smaller angle than the external inclined surface 322 or an inclined angle of about 4 degrees or less. can form As described above, although it has been described with reference to preferred embodiments of the present invention, those skilled in the art can variously modify the present invention within the scope not departing from the spirit and scope of the present invention described in the claims below. And it will be understood that it can be changed. explanation of code

100: implant system 110 fixture

120: abutment 122 external slope

130: inner space 132 inner slope

140: crown medium 142 first close inclined surface

150: Ring-shaped protrusion 152 2nd close contact slope

160: distance fixing unit

Claims

28

【Scope of claims】

【Claim 11 In a detachable dental implant system, the implant includes an implantation portion to be placed in the alveolar bone and an abutment portion positioned above the placement portion and providing a truncated cone-shaped external slope and an inverted truncated cone-shaped internal slope body; and a crown mediator that is interposed between the abutment portion and the prosthetic appliance and fixes the prosthesis to the abutment portion by itself, wherein the crown mediator adheres closely to the external inclined surface and makes surface contact with the first close-inclination angle. and a receiving space coupled to the abutment part by providing a second close-inclination surface in close contact with the inner inclined surface, and surface contact between the outer inclined surface and the first close-inclined surface and the inner inclined surface and the The surface contact between the second close-inclined surfaces forms a resistance torque that prevents rotation of the crown mediator with respect to the abutment part.

[Claim 1] The detachable dental implant system according to claim 1, wherein the external inclined surface and the first close-inclined surface maintain full contact without an intervening material such as a C-ring or packing.

【Claim 3】 The detachable dental implant system according to claim 1, wherein the crown mediator and the abutment part are coupled to each other without cement or adhesive.

[Claim 4] The removable dental implant system of claim 1, wherein the prosthesis can be detachably coupled to the abutment without forming a screw hole in the prosthesis.

[Claim 5] The detachable dental implant system according to claim 1, wherein the placement part and the abutment part are separately provided as a fixture and an abutment, respectively.

[Claim 6] The detachable dental implant system of claim 5, wherein the fixture and the abutment are coupled by screw coupling.

[Claim 7] The detachable dental implant system of claim 5, wherein the fixture and the abutment are coupled by an internal method or an external method.

[Claim 8] The method of claim 1, The detachable dental implant system, characterized in that the placement portion and the abutment portion are formed integrally.

[Claim 1] The removable dental implant system according to claim 1, wherein the external inclined surface is formed in the shape of a truncated cone or a truncated pyramid.

[Claim 10] The method of claim 1, wherein an angle (01) of the external inclined surface and an angle (02) of the internal inclined surface with respect to the central axis of the abutment part are 4 to 15 degrees. implant system.

[Claim 11] The method of claim 1, wherein a ring-shaped protrusion is formed on the ceiling of the accommodation space in the crown medium, the second close-inclined surface is formed outside the ring-shaped protrusion, and the accommodation space is at the center of the ring-shaped protrusion. A removable dental implant system, characterized in that a distance fixing part is formed extending downward from the ceiling of the abutment part to enter the inner space of the abutment part and having an end fixed to the abutment part.

[Claim 1 according to claim 11, wherein the distance fixing part is provided in a column shape with protrusions or grooves formed at an end thereof, The detachable dental implant system, characterized in that the inner space is formed with grooves or projections engaged with the projections or grooves of the distance fixing part.

[Claim 13] The method of claim 11, wherein the distance fixing part is provided in a cylindrical shape with an elastic leg formed at an end thereof, and a protrusion is formed at an end portion of the elastic leg, and the protrusion of the elastic leg is formed on an inner wall of the inner space. Removable dental implant system, characterized in that the interlocking groove is formed.

[Claim 14] The detachable dental implant system of claim 13, wherein a female screw portion is formed in the lower portion of the inner space below the groove engaged with the elastic leg.

[Claim 15] The removable dental implant system according to claim 1, wherein a sealing inclined surface formed at an inclined angle smaller than an angle (01) of the external inclined surface is further formed under the external inclined surface.