CN111110376A - Non-adhesive thread type implant - Google Patents

Non-adhesive thread type implant Download PDF

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Publication number
CN111110376A
CN111110376A CN201811382304.3A CN201811382304A CN111110376A CN 111110376 A CN111110376 A CN 111110376A CN 201811382304 A CN201811382304 A CN 201811382304A CN 111110376 A CN111110376 A CN 111110376A
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CN
China
Prior art keywords
screw
abutment
hole
groove
adhesive
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Granted
Application number
CN201811382304.3A
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Chinese (zh)
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CN111110376B (en
Inventor
崔一卿
郑晓璟
宋宗法
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Famous Oral Cavity
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Famous Oral Cavity
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Publication of CN111110376A publication Critical patent/CN111110376A/en
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Publication of CN111110376B publication Critical patent/CN111110376B/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0018—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the shape
    • A61C8/0028—Pins, needles; Head structures therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0048—Connecting the upper structure to the implant, e.g. bridging bars
    • A61C8/005—Connecting devices for joining an upper structure with an implant member, e.g. spacers
    • A61C8/0068—Connecting devices for joining an upper structure with an implant member, e.g. spacers with an additional screw
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A61C13/225—Fastening prostheses in the mouth
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0012—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the material or composition, e.g. ceramics, surface layer, metal alloy
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0018—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the shape
    • A61C8/0022—Self-screwing
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0048—Connecting the upper structure to the implant, e.g. bridging bars
    • A61C8/005—Connecting devices for joining an upper structure with an implant member, e.g. spacers
    • A61C8/0069—Connecting devices for joining an upper structure with an implant member, e.g. spacers tapered or conical connection

Abstract

The present invention relates to a non-adhesive screw-type implant which can be firmly attached without using an additional adhesive when bonding a mouthpiece and an abutment and can maintain a firmly and stably bonded state even by repeated mastication, comprising: a fixture implanted in a groove of an alveolar bone formed in an oral cavity; a bridge base combined with the fixing body and having a supporting structure for supporting lateral or horizontal pressure; a mouthpiece inserted into the fixture body to be coupled on the abutment; and the screw rod is inserted into the tooth socket and the abutment in a penetrating manner, the upper end part of the screw rod is arranged around the inner circumferential surface of the tooth socket, and the lower end part of the screw rod is inserted and fixed in the center of the upper end of the fixed body.

Description

Non-adhesive thread type implant
Technical Field
The present invention relates to a non-adhesive screw-type implant, and more particularly, to a non-adhesive screw-type implant which can be firmly adhered without using a separate adhesive when adhering a shell and an abutment, and can maintain a firmly and stably bonded state even by repeated mastication.
Background
The implant is also called a denture or a third pair of teeth, and is a dental treatment operation mode in which additional operations such as bone grafting, bone lengthening, and the like are performed on a jaw bone at a tooth defect position or a tooth extraction position, so that the volume of the jaw bone can be enlarged in a fully wrapped manner, and an implant body suitable for a human body is implanted thereon, thereby restoring the function of natural teeth.
After the completion of the morphological, physiological and direct combination of the jaw bone maintaining normal function with the surface of the implanted implant body, i.e. osseointegration (osseoointegration), the bone remodeling process of the jaw bone around the implant is required.
Generally, implants are classified according to morphology: a screw thread type implant, wherein a screw thread is formed on a fixing body of the implant, so that the initial fixing force and the contact area between the screw thread type implant and a bone are increased, the stability of the implant is facilitated, and the dispersion of occlusion load is facilitated; cylindrical implants, stability is obtained from two aspects, namely the surface of the fixture of the implant and the maintenance that occurs from the structural difference in the jawbone and implant diameter.
In particular, when a general screw-type implant is formed of a fixture, an abutment and a fixing screw, an artificial crown is inserted into an upper portion of the abutment, the fixture is formed with a screw thread protruding in a longitudinal direction and a vertical direction so as to be inserted into an alveolar bone and coupled to the screw, an abutment coupling portion is formed at an upper portion, a lower end of the abutment is positioned at the abutment coupling portion of the fixture and is inserted and coupled thereto, a hollow portion is formed inside to insert and fix the artificial crown, and the fixing screw is coupled to the fixture by passing through the abutment and is inserted and coupled to an upper end of the fixture by passing through a lower end of the abutment so as to fix the abutment to the fixture.
When a certain period of time passes after the conventional screw-type implant is implanted into an alveolar bone of a patient undergoing an operation, alveolar bone cells of the alveolar bone are bonded to the screw thread to be osseointegrated and fixed to the alveolar bone.
However, in the treatment of damaged teeth, when the upper surface of the damaged teeth is removed and then the artificial crown is restored by covering the damaged teeth with a metal crown, the metal crown is exposed to the outside of the teeth, and thus the treated teeth and gums are not beautiful.
In the case of using the artificial dental crown made of zirconia, since the bridge is made of metal, the bridge is not easily bonded by the adhesive and is hardly firmly adhered to the artificial dental crown made of zirconia, a firm and stable bonding state cannot be maintained by repeated mastication after the operation, and a gap is formed between the artificial dental crown and the abutment bonding surface, which causes a problem of foreign matter inflow.
[ Prior Art document ]
Patent document
Korea laid-open patent No. 10-2011-
Disclosure of Invention
Technical problem to be solved by the invention
The purpose of the present invention is to provide a non-adhesive screw-type implant that can be firmly attached without using a separate adhesive and that can maintain a firmly and stably bonded state even under repeated mastication.
Technical scheme
The present invention relates to a non-adhesive screw implant which can be firmly attached without using an additional adhesive and can maintain a firmly and stably bonded state even by repeated chewing actions, the non-adhesive screw implant comprising: a fixed body, wherein a 2 nd screw thread is formed along the periphery of the outer peripheral surface, and the fixed body is sequentially formed from the upper end center to the lower part: an inclined groove having a shape in which the periphery gradually decreases downward; the step difference groove is used for forming a vertical step difference below the inclined groove; a screw groove formed to extend below the step difference groove and having a 1 st thread formed along the circumference; the bridge base is formed into a shape that the periphery gradually expands from the lower end to the upper part, and comprises: a 1 st vertical step difference part introduced to the step difference groove of the fixing body; a 1 st inclined portion extending upward from the 1 st vertical step portion and leading into the inclined groove; a 2 nd inclined part formed by extending a lower inclination above the 1 st inclined part than the 1 st inclined part, and formed sequentially upward from the 2 nd inclined part: a horizontal step difference part which forms a horizontal step difference from the upper part of the 2 nd inclined part; a 3 rd inclined part having a shape in which the periphery thereof gradually decreases upward from the horizontal step part; a 2 nd vertical step portion formed to have a vertical step upward from an upper end of the 3 rd inclined portion, and formed with an insertion hole penetrating vertically and having a circumference corresponding to a circumference of the step recess of the fixed body; a mouthpiece formed in order from the center of the bottom surface upward: a through hole formed in a lower surface corresponding to the horizontal step portion and the 3 rd inclined portion of the bridge base, and formed in a periphery of the insertion hole of the bridge base larger than the center of the lower surface; an inclined hole having a shape that the periphery gradually expands upward from the upper end of the through hole; a vertical hole from the upper end of the inclined hole to the upper side; and a screw, comprising: a head part which is arranged in the vertical hole and the inclined hole of the tooth socket and is provided with a screw drill combination groove which is sunken downwards from the center of the upper end; a threaded shank portion formed extending straight downward from around the outer peripheral surface of the lower end of the head portion and having a circumference smaller than the circumference of the screw groove of the abutment; and a screw part formed to extend straight downward from a lower end of the screw shank and having a 3 rd screw thread formed around an outer circumferential surface thereof to be engaged with the 1 st screw thread of the fixing body.
And, still include: and a buffer member having an outer peripheral surface whose periphery is in contact with the periphery of the inner peripheral surface of the through hole of the socket, whose lower surface is in contact with the 3 rd inclined portion and the 2 nd vertical step portion of the abutment, and which is in contact with the inclined surface of the head portion in contact with the inclined hole of the socket, and which has a through hole formed therethrough in the vertical direction and having a larger diameter than the periphery of the outer peripheral surface of the screw shank.
And, still include: and a cap portion that covers a root or a crown of a corresponding shape of the abutment, the shell, and the cushioning member except for a region of the shell that is in contact with the abutment, the shell, and the cushioning member.
And a sealing ring formed in a portion of the abutment where the 3 rd inclined portion is in contact with the lower surface of the socket and a region around the inclined hole of the socket in contact with the inclined surface of the head of the screw in contact with the inclined hole of the socket, for preventing foreign matter from flowing into the gap.
And, a 4 th thread engaged with the 3 rd thread of the screw is formed around an inner circumferential surface of the insertion hole in which the abutment is formed.
Advantageous effects
The non-adhesive threaded implant of the present invention has the following benefits: the fixture, the abutment, the mouthpiece, and the screw are firmly attached to each other without using a separate adhesive, and the combined state is maintained firmly and stably even under repeated mastication.
Further, the non-adhesive screw-type implant of the present invention further includes a buffer member, so that the non-adhesive screw-type implant does not move even by repeated mastication and can maintain a firm and stable bonded state.
In addition, the non-adhesive thread type implant of the present invention further includes a sealing ring, thereby preventing foreign matter from flowing into gaps formed at the adhesive surface between the socket and the abutment and between the socket and the screw.
In addition, the non-adhesive screw-type implant according to the present invention has a structure in which the screw is inserted through the socket, and thus can be easily separated even after being coupled, thereby facilitating cleaning and inspection of the socket.
Drawings
Fig. 1 is a sectional view illustrating a section of a non-adhesive screw-type implant according to an embodiment of the present invention;
fig. 2 is a sectional view illustrating a section of a fixture of a non-adhesive screw type implant according to an embodiment of the present invention;
fig. 3 is a sectional view illustrating a section of an abutment of a non-bonded screw type implant according to an embodiment of the present invention;
FIG. 4 is a cross-sectional view illustrating a cross-section of a socket of a non-bonded screw-type implant according to an embodiment of the present invention;
fig. 5 is a sectional view illustrating a section of a screw of a non-adhesive screw type implant according to an embodiment of the present invention;
fig. 6 is a sectional view illustrating a section of a buffering member of a non-adhesive screw type implant according to an embodiment of the present invention;
fig. 7 is a perspective view illustrating an enlarged view of a of fig. 1 and a sealing ring of a non-adhesive screw-type implant according to an embodiment of the present invention;
fig. 8 is a perspective view illustrating an enlarged view of B of fig. 1 and a sealing ring of a non-adhesive screw-type implant according to an embodiment of the present invention.
Description of the reference numerals
100 fixed body 100a inclined groove
100b step difference groove 100c screw groove
110: 1 st thread 120: 2 nd thread
200 abutment 200a insertion hole
210: 1 st vertical step difference part 220: 1 st inclined part
230: 2 nd inclined part 240: horizontal step difference part
250: 3 rd inclined part 260: 2 nd vertical step difference part
270 th thread
300 facing 300a through hole
300b inclined hole 300c vertical hole
310 roof part
400 screw 410 head
410a screw drill combination groove 420 screw shank
430 screw part 431 No. 3 screw
500 buffer member
600 sealing ring
Detailed Description
Hereinafter, embodiments of the present invention will be described in more detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, and may be embodied in various forms, and the embodiments are only for the purpose of making the disclosure of the present invention complete, and will fully inform the scope of the present invention to those skilled in the art of the present invention. Like reference symbols in the various drawings indicate like elements.
Fig. 1 is a sectional view illustrating a section of a non-adhesive screw-type implant according to an embodiment of the present invention.
As shown in fig. 1, the present invention relates to a non-adhesive screw-type implant which can be firmly attached without an additional adhesive when attaching a mouthpiece to an abutment and can maintain a firmly and stably coupled state even under repeated mastication, comprising: a fixture 100 implanted in a groove of an alveolar bone formed in an oral cavity; a bridge 200 coupled to the fixing body 100 and having a support structure for supporting lateral or horizontal pressure; a mouthpiece 300 inserted into the fixture 100 to be coupled to the abutment 200; and a screw 400 inserted through the mouthpiece 300 and the abutment 200, having an upper end portion disposed around an inner circumferential surface of the mouthpiece 300 and a lower end portion inserted and fixed to an upper end center of the fixing body 100.
Fig. 2 is a sectional view illustrating a section of a fixture of a non-adhesive screw type implant according to an embodiment of the present invention.
As shown in fig. 2, the fixture 100 is a recess formed in an alveolar bone implanted in an oral cavity of a patient, has a supporting function, and is coupled to the rest of the structure of the non-adhesive screw-type implant of the present invention, and is formed with an inclined groove 100a formed in a recessed shape such that the circumference thereof becomes smaller downward from the center of the upper end, and a step difference recess 100b formed to have a vertical step difference toward the lower side of the inclined groove 100a is formed in an extended manner, and a screw groove 100c formed to have a 1 st screw thread 110 formed along the circumference of the outer circumferential surface thereof toward the lower side of the step difference recess 100b is formed in an extended manner.
That is, the fixing body 100 is formed with, in order from the upper end center portion downward: the inclined groove 100a, the step groove 100b, and the screw groove 100c are formed in a region for introducing the lower end portion of the abutment 200, and the screw groove 100c is formed in a region for introducing and fixing the lower end portion of the screw 400.
In particular, the fixture 100 is formed with a 2 nd thread 120 along the circumference of the outer circumferential surface so as to be fixed in an implanted state in a groove formed on an alveolar bone in the oral cavity of a patient.
Fig. 3 is a sectional view illustrating a section of an abutment of a non-bonded screw type implant according to an embodiment of the present invention.
As shown in fig. 3, the abutment 200 is a member that is coupled to the fixture 100 to form a support structure for supporting lateral or horizontal pressure, and includes: a 1 st vertical step 210 formed with a peripheral surface corresponding to a peripheral surface of the step groove 100b so as to be introduced into the step groove 100 b; a 1 st inclined part 220 formed with a peripheral surface corresponding to a peripheral surface of the inclined groove 100a so as to be introduced into the inclined groove 100 a; and, sequentially from above the 2 nd inclined part 230: a 2 nd inclined part 230 formed by extending a lower inclination of the 1 st inclined part 220 than that of the 1 st inclined part 220 and having a shape in which the circumference is gradually enlarged from the lower end to the upper side; a horizontal step 240 formed above the 2 nd inclined part 230; a 3 rd inclined part 250 having a periphery gradually reduced upward from the horizontal step part 240; the 2 nd vertical step 260 is formed to have a vertical step upward from the upper end of the 3 rd inclined part 250.
The 2 nd vertical step 260 functions to fix the arrangement position of the buffer member 500 to be described later.
The bridge base 200 is formed with an insertion hole 200a penetrating vertically and having a circumference corresponding to the circumference of the stepped recess 100b of the fixing body 100.
At this time, a 4 th screw 270 is formed around the inner circumferential surface of the insertion hole 200a where the bridge 200 is formed.
The 4 th thread 270 is configured to be engaged with the 3 rd thread 431 forming the screw part 430 of the screw 400, so that the abutment can be prevented from being separated and detached during the process of being conveyed into the oral cavity in a state where the abutment 200 is coupled to the screw 4001 times or conversely, during the process of being moved out of the oral cavity for separation in a state where the abutment is implanted in the oral cavity.
Fig. 4 is a sectional view illustrating a section of a socket of a non-bonded screw type implant according to an embodiment of the present invention.
As shown in fig. 4, the dental mouthpiece 300 is an artificial prosthetic crown, and has a lower surface corresponding to the horizontal step portion 240 and the 3 rd inclined portion 250 of the abutment 200, and sequentially formed upward from the center of the lower surface: a through hole 300a having a circumference larger than a circumference of the insertion hole 200a of the abutment 200; an inclined hole 300b having a shape in which the periphery thereof gradually expands upward from the upper end of the through hole 300 a; and a vertical hole 300c formed from a straight upper side from an upper end of the inclined hole 300 b.
In this case, the mouthpiece 300 may be generally made of a material such as metal, ceramic, or resin, and in order to improve the aesthetic quality, the mouthpiece 300 of the non-adhesive screw-type implant according to the present invention is mainly made of a ceramic material, and in order to improve the brittleness problem, which is a weak point of the ceramic material, the lower surface corresponding to the horizontal step portion 240 and the 3 rd inclined portion 250 of the abutment 200 is formed and connected to the screw rod 400, and the region directly contacting the screw rod 400 is not formed.
That is, in a state where the lower surface of the mouthpiece 300 is disposed in contact with the horizontal step portion 240 and the 3 rd inclined portion 250 of the abutment 200, if the boundary portion where the mouthpiece 200 is in contact with the abutment 200 becomes thin, there occurs a problem that reproducibility of ceramics is deteriorated, and conversely, if the boundary portion where the mouthpiece 200 is in contact with the abutment 200 becomes thick, there occurs a problem that the biting force transmitted to the boundary portion during chewing becomes large and is broken, and therefore, it is preferable that the boundary portion where the mouthpiece 200 is in contact with the abutment 200 is disposed at a distance of 2mm or more.
Here, the police interface refers to an interface where the abutment 200 and the mouthpiece 300 meet each other.
Fig. 5 is a sectional view illustrating a screw section of a non-binding screw-type implant according to an embodiment of the present invention.
As shown in fig. 5, the screw 400 is a member for firmly fixing the mouthpiece 300 and the abutment 200 to the fixture 100, and is inserted through the mouthpiece 300 and the abutment 200, and has an upper end portion disposed around the inner peripheral surface of the mouthpiece 300 and a lower end portion inserted and fixed to the center of the upper end of the fixture 100.
The screw is formed by the following structure: a head 410 which is installed in the vertical hole 300c and the inclined hole 300b of the mouthpiece 300 and has a bur coupling groove 410a formed to be depressed downward from the center of the upper end; a screw shank 420 formed to extend straight downward from the periphery of the outer peripheral surface of the lower end of the head 410 and having a smaller periphery than the periphery of the screw groove 100c of the abutment 200; and a screw part 430 extending downward from a lower end of the screw shank part 420, and having a 3 rd screw 431 formed around an outer circumferential surface thereof to be engaged with the 1 st screw 110 of the fixing body 100.
The head 410 is formed in a shape corresponding to the vertical hole 300c and the inclined hole 300b of the mouthpiece so as to be positioned in the upper end portion of the screw 400 with respect to the longitudinal direction thereof, and is formed with a screw coupling groove 410a recessed downward from the center of the upper end. At this time, it is preferable that the auger coupling groove 410a is formed with a polygonal groove of a hexagonal shape, an octagonal shape, etc. so that it can be coupled using an auger insertion rotation.
The shank 420 is formed in a substantially cylindrical shape at an intermediate portion with respect to the longitudinal direction of the screw 400. At this time, preferably, the threaded shank 420 forms a smaller circumference than the circumference of the screw groove 100c of the abutment 200.
The screw part 430 is a lower end part with respect to the longitudinal direction of the screw 400, and has a 3 rd screw thread 431 formed on the outer circumferential surface thereof so as to be engaged with the 1 st screw thread 110 of the fixing body 100.
In particular, since the region (including the screw coupling groove 410a) exposed to the outside in the state of being coupled to the oral cavity is not aesthetically pleasing and food may remain during chewing, it is preferable to fill the region after coupling to the oral cavity to have a tooth shape.
In this case, the method of filling the tooth shape is to fill the tooth with cotton once and fill the tooth with resin 2 times, and if the depth is not deep, the cotton may be omitted and only the resin may be used for filling.
Fig. 6 is a sectional view illustrating a section of a buffering member of a non-adhesive screw type implant according to an embodiment of the present invention.
As shown in fig. 6, the non-adhesive screw-type implant according to an embodiment of the present invention may further include a buffer member 500, wherein the buffer member 500 is a member interposed between the abutment 200, the socket 300 and the screw 400 to buffer the chewing action, the periphery of the inner circumferential surface of the through hole 300a of the socket 300 is in contact with the periphery of the outer circumferential surface thereof, the 3 rd inclined portion 250 and the 2 nd vertical step difference portion 260 of the abutment 200 are in contact with the lower surface thereof, and are in contact with the inclined surface of the head portion 410 in contact with the inclined hole 300b of the socket 300, and a through hole having a larger periphery is formed to penetrate vertically and is formed around the outer circumferential surface of the screw shank 420 of the screw 400.
That is, the buffering member 500 is coupled to the screw 400 to buffer and disperse the biting force acting in the vertical direction and the lateral direction, thereby preventing the thread 431 of the screw 400 from being loosened or broken due to a long-term chewing action in an implanted state in the oral cavity.
Further, it is preferable that the buffer member 500 has a water absorption of 40 μ g/mm and a bending strength of 50MPa or more, which is harmless to the human body3Water solubility of 7.5. mu.g/mm3The following mechanical acrylic materials.
As shown in fig. 1, the non-adhesive screw-type implant of the present invention may further include a cap part 310, and the cap part 310 may protect an area exposed to the outside of the shell 300 in an implanted state, and cover a root or a crown having a shape corresponding to the area except for an area where the abutment 200, the shell 300, and the cushioning member 500 are in contact with each other in the shell 300.
Fig. 7 is a perspective view illustrating an enlarged view of a of fig. 1 and a sealing ring of a non-adhesive screw-type implant according to an embodiment of the present invention; fig. 8 is a perspective view illustrating an enlarged view of B of fig. 1 and a sealing ring of a non-adhesive screw-type implant according to an embodiment of the present invention.
As shown in fig. 7 and 8, the non-adhesive screw-type implant according to the present invention may further include a sealing ring 600, wherein the sealing ring 600 is a ring-shaped member made of polyurethane resin or latex elastic material harmless to the human body for preventing the inflow of foreign substances into gaps between a region where the abutment 200 is in contact with the mouthpiece 300 and a region where the screw 400 is in contact with the mouthpiece 300, and may be formed at a portion where the 3 rd inclined portion 250 of the abutment 200 is in contact with the lower surface of the mouthpiece 300 and a region where the inclined surface of the head portion 410 of the screw 400 in contact with the inclined hole 300b of the mouthpiece 300 is in the vicinity of the inclined hole 300b of the mouthpiece 300.
Further, since there is a possibility that a gap may be generated in a region where the abutment 200 is in contact with the mouthpiece 300 and a region where the screw 400 is in contact with the mouthpiece 300 due to a long chewing action, the sealing ring 600 functions to prevent abrasion and deformation due to friction between structures.
The present invention has been described with reference to the accompanying drawings and the above-described preferred embodiments, but the present invention is not limited thereto, and thus, various changes and modifications can be made by those skilled in the art of the present invention without departing from the technical spirit of the claims.

Claims (6)

1. A non-adhesive threaded implant, comprising:
a fixed body, wherein a 2 nd screw thread is formed along the periphery of the outer peripheral surface, and the fixed body is sequentially formed from the upper end center to the lower part: an inclined groove having a shape in which the periphery gradually decreases downward; the step difference groove is used for forming a vertical step difference below the inclined groove; a screw groove formed to extend below the step difference groove and having a 1 st thread formed along the circumference;
the bridge base is formed into a shape that the periphery gradually expands from the lower end to the upper part, and comprises: a 1 st vertical step difference part introduced to the step difference groove of the fixing body; a 1 st inclined portion extending upward from the 1 st vertical step portion and leading into the inclined groove; a 2 nd inclined part formed by extending a lower inclination above the 1 st inclined part than the 1 st inclined part, and formed sequentially upward from the 2 nd inclined part: a horizontal step difference part which forms a horizontal step difference from the upper part of the 2 nd inclined part; a 3 rd inclined part having a shape in which the periphery thereof gradually decreases upward from the horizontal step part; a 2 nd vertical step portion formed to have a vertical step upward from an upper end of the 3 rd inclined portion, and formed with an insertion hole penetrating vertically and having a circumference corresponding to a circumference of the step recess of the fixed body;
a mouthpiece formed in order from the center of the bottom surface upward: a through hole formed in a lower surface corresponding to the horizontal step portion and the 3 rd inclined portion of the bridge base, and formed in a periphery of the insertion hole of the bridge base larger than the center of the lower surface; an inclined hole having a shape that the periphery gradually expands upward from the upper end of the through hole; a vertical hole from the upper end of the inclined hole to the upper side; and
a screw, comprising: a head part which is arranged in the vertical hole and the inclined hole of the tooth socket and is provided with a screw drill combination groove which is sunken downwards from the center of the upper end; a threaded shank portion formed extending straight downward from around the outer peripheral surface of the lower end of the head portion and having a circumference smaller than the circumference of the screw groove of the abutment; and a screw part formed to extend straight downward from a lower end of the screw shank and having a 3 rd screw thread formed around an outer circumferential surface thereof to be engaged with the 1 st screw thread of the fixing body.
2. The non-adhesive screw-type implant according to claim 1,
further comprising: and a buffer member having an outer peripheral surface whose periphery is in contact with the periphery of the inner peripheral surface of the through hole of the socket, whose lower surface is in contact with the 3 rd inclined portion and the 2 nd vertical step portion of the abutment, and which is in contact with the inclined surface of the head portion in contact with the inclined hole of the socket, and which has a through hole formed therethrough in the vertical direction and having a larger diameter than the periphery of the outer peripheral surface of the screw shank.
3. The non-adhesive screw-type implant according to claim 2,
further comprising: and a cap portion that covers a root or a crown of a corresponding shape of the abutment, the shell, and the cushioning member except for a region of the shell that is in contact with the abutment, the shell, and the cushioning member.
4. The non-adhesive screw-type implant according to claim 1,
and a sealing ring formed at a portion where the 3 rd inclined portion of the abutment contacts the lower surface of the mouthpiece, for preventing foreign substances from flowing into the gap.
5. The non-adhesive screw-type implant according to claim 1,
and a sealing ring formed around the inclined hole of the mouthpiece in a region in contact with an inclined surface of the head of the screw rod in contact with the inclined hole of the mouthpiece, for preventing foreign matter from flowing into the gap.
6. The non-adhesive screw-type implant according to claim 1,
a4 th thread engaged with the 3 rd thread of the screw is formed around an inner peripheral surface of the insertion hole in which the abutment is formed.
CN201811382304.3A 2018-10-30 2018-11-20 Non-adhesive thread type implant Active CN111110376B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2018-0130337 2018-10-30
KR1020180130337A KR101924802B1 (en) 2018-10-30 2018-10-30 Non adhesive screw implants

Publications (2)

Publication Number Publication Date
CN111110376A true CN111110376A (en) 2020-05-08
CN111110376B CN111110376B (en) 2021-10-15

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