Non-adhesive dental implant

Abstract

The present invention relates to a non-adhesive dental implant, and more particularly, to a non-adhesive dental implant characterized by comprising: an abutment comprising an upper part which is locked by embedding a prosthesis, a lower part which is locked by embedding a fixing device, and an inclined part for connecting the upper part and the lower part, a first screw hole is formed in the center; a restoration body having a coupling portion formed on the lower side inside the restoration body to be locked by being fitted into the upper portion of the abutment and a second screw hole formed on the upper side inside the restoration body, the restoration body including a coupling protrusion for connecting the coupling portion and the second screw hole; and an abutment screw inserted and locked through the first and second screw holes, the upper portion of the abutment including a plurality of upper end protrusions disposed at a horizontal upper end portion at intervals and protruding upward, the upper end protrusions including grooves recessed in the outer side surface, and the coupling protrusions including protrusions protruding toward the interior of the restoration body. The protrusion is embedded into the groove of the upper end protruding part to be locked.

Description

Technical Field

[0001] The present invention relates to an adhesive-free dental implant which improves the convenience of patients and operators. Background Art

[0002] Dental implants are widely used to replace damaged or lost natural teeth. In such implants, a dental fixture is placed in the patient's jawbone to replace the natural tooth. Then, an abutment can be attached to the fixture to form a core of an artificial tooth that protrudes from the bone tissue through the soft gum tissue into the patient's mouth. A restoration (crown) can eventually be mounted on top of the abutment.

[0003] According to the method of fixing the restoration, traditional implants can be divided into screw-retained type and cement-retained type. Screw-retained implants are the method of fixing the restoration by screws, while cement-retained implants are the method of clamping the restoration into the abutment and fixing the restoration to the abutment using dental cement.

[0004] Traditional cement-maintained implants have concerns about the development of periodontitis, and after the restoration is installed, when repair is needed, there is the inconvenience of removing the restoration.

[0005] As an example of a screw-retained implant, the Republic of Korea registered patent No. 10-2427069 (2022.07.26.) discloses an implant crown locking structure, which includes: an abutment, whose upper side is formed with a cutting portion and a protrusion; and a crown, whose lower side is formed with an abutment coupling portion embedded in the upper side of the abutment, and the abutment coupling portion is formed with an abutment mounting groove in which the abutment protrusion can be mounted. In the process of locking the screw, the above-mentioned implant crown locking structure supports the upper side of the abutment through the cutting portion, so that even if the cement (adhesive) bonding process that usually combines the crown and the abutment is omitted, a strong abutment can be achieved. However, this implant crown locking structure will support the upper side of the abutment when locking the screw, and then apply force to the crown from the outside. Therefore, when the screw makes the internal space formed by the crown narrower than the space formed by the upper side of the abutment being pushed and supported, the crown will be damaged.

[0006]

Prior technical literature

[0007] [Patent Literature]

[0008] Korean Patent Registration No. 10-2427069 (2022.07.26.) Summary of the invention

[0009] Issues to be solved

[0010] An object of the present invention is to provide a dental implant in which a restoration and an abutment can be easily separated without the risk of damaging the restoration.

[0011] Problem Solution

[0012] In one aspect, the present invention provides a dental implant, comprising:

[0013] The base comprises an upper portion embedded in the restoration and locked, a lower portion embedded in the fixture and locked, and an inclined portion for connecting the upper portion and the lower portion, and a first screw hole is formed in the center;

[0014] A restoration having a coupling portion formed on the lower side thereof and locked by being embedded in the upper side of the abutment, a second screw hole formed on the upper side thereof, and a coupling protrusion for connecting the coupling portion and the second screw hole; and

[0015] The base screw penetrates the first and second screw holes and is inserted and locked.

[0016] The upper portion of the base includes a plurality of upper end protrusions which are arranged at intervals on the upper end portion of the horizontal plane and protrude upward.

[0017] The upper end protrusion includes a groove formed in the outer side surface.

[0018] The combining protrusion comprises a protrusion protruding toward the inside of the restoration, and the protrusion is embedded in the groove of the upper end protrusion and locked.

[0019] Effects of the Invention

[0020] The dental implant described in the embodiment of the present invention has no risk of damaging the restoration, and the restoration and the base can be easily separated. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 FIG. 1 is a schematic diagram of a dental implant before locking according to an embodiment of the present invention.

[0022] Figure 2 FIG. 1 is a schematic diagram of a base of a dental implant according to an embodiment of the present invention.

[0023] Figure 3 FIG. 1 is a schematic diagram of a dental implant restoration according to an embodiment of the present invention.

[0024] Figure 4 FIG. 1 is a schematic diagram of a locked state of a dental implant according to an embodiment of the present invention.

[0025] Figure 5 yes Figure 4 Enlarged view of the part indicated by the dotted circle. DETAILED DESCRIPTION

[0026] The present invention relates to an adhesive-free dental implant which improves the convenience of patients and operators.

[0027] Hereinafter, various embodiments of the present invention are described in detail with reference to the accompanying drawings.

[0028] Figure 1 FIG. 1 is a schematic diagram of a dental implant before locking according to an embodiment of the present invention.

[0029] like Figure 1 As shown, the dental implant according to an embodiment of the present invention may include an abutment 100 , a restoration 200 , and an abutment screw 400 , and may further include a fixing device 300 .

[0030] Figure 2 is a schematic diagram of a base of a dental implant according to an embodiment of the present invention, Figure 3 is a schematic diagram of a dental implant restoration according to an embodiment of the present invention, Figure 4 is a schematic diagram of a locked state of a dental implant according to an embodiment of the present invention, Figure 5 yes Figure 4 Enlarged view of the part indicated by the dotted circle.

[0031] Below, reference Figures 2 to 5 The base 100, the restoration 200, the base screw 400 and the fixing device 300 of the dental implant according to an embodiment of the present invention are further described in detail.

[0032] The base 100 according to one embodiment of the present invention includes an upper portion 110 , an inclined portion 120 , and a lower portion 130 .

[0033] The upper portion 110 of the abutment 100 may be inserted into and locked into the restoration 200 described below.

[0034] In one embodiment, the upper portion 110 of the base 100 may include a plurality of upper end protrusions 150 that are spaced apart and arranged at the horizontal upper end portion 111 and protrude upward. For example, when two upper end protrusions 150 are arranged, they are preferably arranged facing each other, for example, when three upper end protrusions 150 are arranged, they are preferably arranged at the vertices of an equilateral triangle, for example, when four upper end protrusions 150 are arranged, they are arranged at the vertices of a regular quadrilateral.

[0035] For example, the height of the upper protrusion 150 can be 1 to 3 mm, so as to ensure elasticity and prevent damage when locking the restoration 200. For example, the width of the upper protrusion 150 can be 0.5 to 2 mm, so as to ensure elasticity when locking the restoration 200.

[0036] In another embodiment, the upper protrusion 150 may include a groove 151 formed concavely on the outer side. The groove 151 may be formed along the outer circumferential surface of the upper protrusion 150. As described below, when the restoration 200 is combined, the protrusion 221 formed by the combined protrusion 220 of the restoration 200 is inserted into the groove 151 of the upper protrusion 150 and locked.

[0037] In another embodiment, when the protrusion 221 of the coupling protrusion 220 is inserted into the groove 151 of the upper protrusion 150 and locked, the upper protrusion 150 can be elastically contracted. This will be described in further detail below.

[0038] In another embodiment, the upper protrusion 150 is separated from the periphery 111a of the upper end portion 111 of the upper portion 110 of the base 100 toward the inside and protrudes upward. Due to this structure, after the upper portion 110 of the base 100 is inserted into the coupling portion 210 of the restoration 200 and locked, a given interval (H2) can be formed between at least a portion of the lower region of the groove 151 of the upper protrusion 150 and the restoration 200. After the implant is implanted, the formation of this interval (H2) can remove the lateral pressure applied to the upper protrusion 150 by the chewing action of the patient, thereby achieving long-term use of the restoration 200 and ease of repair.

[0039] In another embodiment, the width of the upper portion 110 of the base 100 becomes wider from the upper end 111 to the lower end 112, and may include an inclined outer peripheral surface 113 for connecting the upper end 111 and the lower end 112. The upper portion 110 of the base 100 may further include an anti-rotation surface 114 formed by vertically and horizontally cutting a part of the outer peripheral surface 113. The anti-rotation surface 114 can prevent the rotation of the already embedded and locked restoration 200.

[0040] In yet another embodiment, the upper end portion of the upper protrusion 150 may include a first horizontal region 152 formed along a horizontal plane.

[0041] In addition, the inclined portion 120 of the base 100 connects the upper portion 110 and the lower portion 130 , and the radius thereof becomes smaller toward the lower side.

[0042] The lower portion 130 of the base 100 may be inserted into the fixture 300 and locked.

[0043] A first screw hole 140 may be formed at the center of the base 100. The base screw 400 described below is inserted through the first screw hole 140 and locked.

[0044] In the restoration 200 described in a specific example of the present invention, a coupling portion 210 that is embedded in and locked with the upper portion 110 of the base 100 may be formed on the inner lower side, and a second screw hole 240 may be formed on the inner upper side.

[0045] The restoration 200 may include a coupling protrusion 220 for connecting the coupling portion 210 and the second screw hole 240. The coupling protrusion 220 includes a protrusion 221 protruding toward the inside of the restoration 200, and the protrusion 221 is inserted into the groove 151 of the upper end protrusion 150 of the base 100 and is locked. Further detailed description is as follows: when the coupling portion 210 of the restoration 200 is inserted into the upper portion 110 of the base 100, the upper end protrusion 150 of the base 100 elastically contracts inward due to the groove 151 formed along the outer peripheral surface, and further, when the insertion is completed, it can be restored to the original position.

[0046] In one embodiment, in the dental implant of the present invention, after the upper portion 110 of the base 100 is inserted into the coupling portion 210 of the restoration 200 and locked, a given gap (H1) can be formed between at least a portion of the groove 151 of the upper end protrusion 150 and at least a portion of the protrusion 221 of the coupling protrusion 220. This structure can remove the lateral pressure applied to the restoration 200 by the base screw 400 described below, thereby preventing the restoration 200 from being damaged when the implant is implanted. In addition, a gap (H) is formed between the groove 151 and the protrusion 221, locking the base 100 and the restoration 200. Therefore, after the implant is implanted, the lateral pressure applied to the upper end protrusion 150 by the patient's chewing action can be removed, thereby achieving long-term use of the restoration 200 and ease of repair.

[0047] In another embodiment, the joint portion 210 of the restoration 200 may be formed with a base mounting portion 211, and the base mounting portion 211 is used to abut against the outer peripheral surface 113 of the upper portion 110 of the mounting base 100. As described above, the width of the outer peripheral surface 113 becomes wider from the upper end 111 to the lower end 112, and therefore, the width of the base mounting portion 211 also becomes wider from the upper end to the lower end. When the abutment 100 is embedded in the restoration 200 and locked, the downward force of the abutment screw 400 causes the outer peripheral surface 113 to abut against the abutment mounting portion 211, which is dispersed and applied to the abutment 100 and the restoration 200, thereby preventing the restoration 200 from being damaged.

[0048] In another embodiment, the lower side of the second screw hole 240 may form a screw installation portion 241 protruding toward the interior of the restoration 200. Figure 3 As shown, the upper end surface of the screw mounting portion 241 can protrude at a right angle to the inside of the restoration 200, as shown by the dotted circle, but the lower end surface of the screw mounting portion 241 becomes wider and wider toward the bottom. Due to this structure, when the base screw 400 described below is inserted and locked, the base screw 400 presses the screw mounting portion 241 so that the restoration 200 is only subjected to the downward force. As a result, the restoration 200 is not subjected to the lateral force, and damage to the restoration 200 caused by the lateral pressure can be prevented.

[0049] In another embodiment, the lower end of the screw mounting portion 241 may include a second horizontal area 242 formed along a horizontal plane. When the base screw 400 is inserted and tightened, the first horizontal area 152 does not contact the second horizontal area 242. When the base screw 400 is inserted and tightened, the force from below will be applied to the screw mounting portion 241. However, the first horizontal area 152 does not contact the second horizontal area 242, and the force from below the base screw 400 does not reach the upper protrusion 150, thereby preventing the upper protrusion 150 from being damaged.

[0050] The base screw 400 of a specific example of the present invention passes through the first and second screw holes 140, 240 and is inserted and locked. That is, the base screw 400 passes through the second screw hole 240 formed in the center of the restoration 200 and the first screw hole 140 formed in the center of the base 100, and then can be inserted into the screw groove formed in the center of the fixture 300 and locked.

[0051] In one embodiment, the distance (L1) from the center (A) of the first screw hole 140 to the inner side of the upper protrusion 150 is greater than or equal to the radius (L2) of the area of ​​the abutment screw 400 corresponding to the position of the upper protrusion 150 when the abutment screw 400 is inserted and locked. After the restoration 200 is inserted into the abutment 100 and locked, the diameter (L2×2) of the abutment screw 400 corresponding to the position of the upper protrusion 150 is smaller than the distance (L1×2) between the inner sides of the upper protrusion 150. Thus, when the abutment screw 400 is inserted and locked, the lateral pressure from the abutment screw 400 is prevented from being applied to the upper protrusion 150, thereby preventing the upper protrusion 150 from being damaged.

[0052] Hereinafter, various embodiments of the present invention will be described.

[0053] (1) A dental implant, characterized in that: the dental implant comprises: a base 100, which comprises an upper portion 110 embedded in a restoration 200 and locked, a lower portion 130 embedded in a fixing device 300 and locked, and an inclined portion 120 for connecting the upper portion 110 and the lower portion 130, and a first screw hole 140 is formed in the center; the restoration 200 has a connecting portion 210 embedded in the upper portion 110 of the base 100 and locked on its lower side, and a second screw hole 240 is formed on its upper side, including a connecting portion 210 for connecting the connecting portion 210; The protrusion 220 that combines the part 210 with the second screw hole 240; and the base screw 400, which passes through the first and second screw holes 140, 240 and is embedded and locked. The upper part 110 of the base 100 includes a plurality of upper end protrusions 150 that are spaced apart and arranged at a horizontal plane-shaped upper end portion 111 and protrude upward. The upper end protrusion 150 includes a groove 151 recessed and formed on the outer side surface. The combining protrusion 220 includes a protrusion 221 that protrudes toward the interior of the restoration 200, and the protrusion 221 is embedded in the groove 151 of the upper end protrusion 150 and is locked.

[0054] (2) A dental implant, characterized in that when the protrusion 221 of the coupling protrusion 220 is fitted into the groove 151 of the upper protrusion 150 and locked, the upper protrusion 150 elastically contracts.

[0055] (3) A dental implant, characterized in that: after the upper portion 110 of the base 100 is embedded in the coupling portion 210 of the restoration 200 and locked, a given gap (H1) is formed between at least a portion of the groove 151 of the upper end protrusion 150 and at least a portion of the protrusion 221 of the coupling protrusion 220.

[0056] (4) A dental implant, characterized in that: the width of the upper portion 110 of the base 100 becomes wider from the upper end portion 111 to the lower end portion 112, including an inclined outer peripheral surface 113 for connecting the upper end portion 111 and the lower end portion 112, and the connecting portion 210 of the restoration 200 is formed with a base mounting portion 211, and the base mounting portion 211 is used to abut against the outer peripheral surface 113 of the upper portion 110 of the base 100.

[0057] (5) A dental implant, characterized in that: a screw mounting portion 241 protruding toward the interior of the restoration 200 is formed on the lower side of the second screw hole 240, and when the base screw 400 is inserted and tightened, the base screw 400 applies pressure to the screw mounting portion 241 so that the restoration 200 is only subjected to downward force.

[0058] (6) A dental implant, characterized in that: the upper end of the upper protrusion 150 includes a first horizontal area 152 formed along the horizontal plane, and the lower end of the screw mounting portion 241 includes a second horizontal area 242 formed along the horizontal plane, and when the base screw 400 is inserted and locked, the first horizontal area 152 is prevented from contacting the second horizontal area 242.

[0059] (7) A dental implant, characterized in that: the distance (L1) from the center (A) of the first screw hole 140 to the inner side surface of the upper protrusion 150 is greater than or equal to the radius (L2) of the area of ​​the base screw 400 corresponding to the position of the upper protrusion 150 when the base screw 400 is inserted and locked.

[0060] (8) A dental implant, characterized in that an upper end protrusion 150 is separated from the outer periphery 111a of the upper end portion 111 of the upper portion 110 of the base 100 and protrudes upward, and after the upper portion 110 of the base 100 is embedded in the coupling portion 210 of the restoration 200 and is locked, at least a portion of the lower region of the groove 151 of the upper end protrusion 150 forms a given interval (H2) with the restoration.

[0061] *[reference numeral]

[0062] 100: base 150: upper end protrusion 151: groove

[0063] 200: restoration 210: joint 220: joint protrusion

[0064] 300: Fixation device 400: Abutment screw

Claims

1. A dental implant, Features: Dental implants, include: The base (100) comprises an upper portion (110) embedded in a restoration (200) and locked, a lower portion (130) embedded in a fixture (300) and locked, and an inclined portion (120) for connecting the upper portion (110) and the lower portion (130), and a first screw hole (140) is formed in the center; The restoration (200) has a connecting portion (210) formed on the lower side thereof and locked by being embedded in the upper portion (110) of the base (100), a second screw hole (240) formed on the upper side thereof, and includes a connecting protrusion (220) for connecting the connecting portion (210) and the second screw hole (240); and The base screw (400) penetrates the first and second screw holes (140, 240) and is inserted and locked. The upper portion (110) of the base (100) includes a plurality of upper end protrusions (150) which are arranged at intervals on the horizontal upper end portion (111) and protrude upward. The upper end protrusion (150) includes a groove (151) formed in a recessed manner on the outer side surface. The combining protrusion (220) comprises a protrusion (221) protruding toward the inside of the restoration (200), and the protrusion (221) is embedded in the groove (151) of the upper end protrusion (150) and locked.

2. The dental implant according to claim 1, Features: When the protrusion (221) of the combined protrusion (220) is embedded in the groove (151) of the upper protrusion (150) and locked, the upper protrusion (150) elastically contracts.

3. The dental implant according to claim 2, Features: After the upper portion (110) of the base (100) is embedded in the coupling portion (210) of the restoration (200) and locked, a given gap (H1) is formed between at least a portion of the groove (151) of the upper end protrusion (150) and at least a portion of the protrusion (221) of the coupling protrusion (220).

4. The dental implant according to claim 1, Features: The width of the upper portion (110) of the base (100) becomes wider from the upper end portion (111) to the lower end portion (112), and includes an inclined outer peripheral surface (113) for connecting the upper end portion (111) and the lower end portion (112). The joint portion (210) of the restoration (200) is formed with a base mounting portion (211), and the base mounting portion (211) is used to abut against the outer peripheral surface (113) of the upper portion (110) of the mounting base (100).

5. The dental implant according to claim 1, Features: A screw mounting portion (241) is formed on the lower side of the second screw hole (240) and protrudes into the interior of the restoration (200). When the base screw (400) is inserted and tightened, the base screw (400) applies pressure to the screw mounting portion (241) so that the restoration (200) is only subjected to downward force.

6. The dental implant according to claim 5, Features: The upper end of the upper protrusion (150) includes a first horizontal area (152) formed along the horizontal plane, and the lower end of the screw mounting portion (241) includes a second horizontal area (242) formed along the horizontal plane. When the base screw (400) is embedded and locked, the first horizontal area (152) is prevented from contacting the second horizontal area (242).

7. The dental implant according to claim 1, Features: The distance (L1) from the center (A) of the first screw hole (140) to the inner side surface of the upper protrusion (150) is greater than or equal to the radius (L2) of the base screw (400) area corresponding to the position of the upper protrusion (150) when the base screw (400) is embedded and locked.

8. The dental implant according to claim 2, Features: The upper end protrusion (150) is separated from the outer periphery (111a) of the upper end portion (111) of the upper portion (110) of the base (100) toward the inside and protrudes upward. After the upper portion (110) of the base (100) is embedded in the joint portion (210) of the restoration (200) and locked, at least a portion of the lower area of ​​the groove (151) of the upper end protrusion (150) forms a given interval (H2) with the restoration.

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