WO2022124666A1 - Pilier prothétique de type sablier et procédé de fabrication de couronne l'utilisant - Google Patents

Pilier prothétique de type sablier et procédé de fabrication de couronne l'utilisant Download PDF

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Publication number
WO2022124666A1
WO2022124666A1 PCT/KR2021/017773 KR2021017773W WO2022124666A1 WO 2022124666 A1 WO2022124666 A1 WO 2022124666A1 KR 2021017773 W KR2021017773 W KR 2021017773W WO 2022124666 A1 WO2022124666 A1 WO 2022124666A1
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WO
WIPO (PCT)
Prior art keywords
hourglass
abutment
coupling
box
male screw
Prior art date
Application number
PCT/KR2021/017773
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English (en)
Korean (ko)
Inventor
장천석
Original Assignee
이노덴 주식회사
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Publication date
Application filed by 이노덴 주식회사 filed Critical 이노덴 주식회사
Publication of WO2022124666A1 publication Critical patent/WO2022124666A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C5/00—Filling or capping teeth
    • A61C5/70—Tooth crowns; Making thereof
    • A61C5/77—Methods or devices for making crowns
    • 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

Definitions

  • the present invention relates to a dental abutment and a method for manufacturing a crown using the same, and more particularly, by providing a column with a thin central portion and a larger diameter on the gingival and occlusal side, such as an hourglass, to the column Hourglass-type abutment with hourglass-shaped pillars that allows for tight attachment of the artificial tooth (prosthesis/crown) to be placed so that it can be firmly attached without using adhesive It relates to a ment and a method for manufacturing a crown using the same.
  • an implant is an artificial tooth structure formed through a dental treatment method to replace a missing or lost tooth. It replaces the function of natural teeth by inserting them into areas without bones and gums due to tooth loss due to disease, accidents or tumors, and restores aesthetic beauty through restoration of artificial teeth.
  • These implants are basically a fixture to be placed in the alveolar bone, an abutment fixed to the fixture and supporting lateral or horizontal pressure in response to the occlusal force applied during mastication (abutment, abutment), and the abutment It includes artificial teeth (prosthetics/crowns) that restore aesthetic beauty similar to natural teeth by restoring the upper part of the tooth.
  • a fixture is placed in the alveolar bone of the recipient, and then the abutment is fixed. And, it is restored by combining the artificial tooth on the upper part of the abutment. At this time, the artificial tooth is attached and fixed using an adhesive (cement or bond) harmless to the human body so that the artificial tooth is not easily separated from the abutment during mastication.
  • an adhesive cement or bond
  • Korean Patent No. 10-1445298 and Korean Patent No. 10-1808599 respectively, provide a structure for coupling the prosthesis to the abutment using a screw, thereby providing the advantage of not using an adhesive. Since the coupling force between the butts depends only on the screw, when a continuous external force is applied to the prosthesis, the coupling force of the screw is loosened, which may cause a problem in that the coupling force between the prosthesis and the abutment is lowered.
  • the coupler is interposed between the prosthesis and the abutment, and in Korean Patent No. 10-1445298 and Korean Patent No. 10-1808599, the prosthesis rotates about the abutment as an axis, so the coupling force of the screw is loose.
  • Korean Patent Registration No. 10-1445298 and Korean Patent Registration No. 10-1808599 the coupling force between the prosthesis and the abutment depends only on the screw, and the relationship between the prosthesis and the abutment can be solved. There may be limits to maximizing the bonding force.
  • Korean Patent Registration No. 10-1924802 proposes an implant structure in which a prosthesis is coupled to the upper part of the abutment via a screw bolt as in the above-mentioned prior documents, but Korean Patent Registration No. 10-1445298 and the Republic of Korea Patent No. 10-1445298 As in Patent Registration No. 10-1808599, since the coupling force between the prosthesis and the abutment depends only on the bolt, there may still be a limit to maximizing the coupling force between the prosthesis and the abutment.
  • a coupler is additionally installed between the prosthesis and the abutment, unlike the existing implant structure, and in Korean Patent Registration No. 10-1924802, between the prosthesis and the abutment to prevent the flow of the prosthesis. Since the buffer member is additionally installed, the structure of the implant is somewhat complicated compared to the existing one, and this may cause a problem in that the implant operation is somewhat complicated and the operation time is also increased.
  • An object of the present invention is to provide an hourglass-type implant abutment that can be coupled and a method for manufacturing a crown using the same.
  • the present invention improves the bonding force between the artificial tooth and the abutment compared to the prior art by only processing the abutment without adding other components (coupler/buffer member, etc.)
  • Another object of the present invention is to provide a non-adhesive abutment having an hourglass-shaped column that can reduce the treatment time by maintaining a stable bonding force and reducing the treatment time by easier operation compared to the prior art, and a method for manufacturing a crown using the same.
  • the present invention according to one aspect for achieving the above object is a lower part comprising a coupling part fixed to a fixture to be implanted in the alveolar bone, a connection part formed on the coupling part, and a box part formed on the top of the connection part; and an upper part that is detachably screwed to an upper portion of the box portion and constitutes a column portion having an hourglass-shaped structure together with the box portion in a state coupled to the box portion, wherein the column portion is a central portion at a lower end and an upper portion
  • an hourglass-type abutment characterized in that it has an hourglass-type structure in which the outer diameter becomes smaller as it increases, and is covered with artificial teeth.
  • the upper part may be characterized in that a male screw protruding downwardly is formed in the center of the lower part, and a female screw to which the male screw is screwed is formed in the upper center of the box part corresponding to the male screw.
  • the box portion may be characterized in that a male screw protruding upward is formed in the upper center, and a female screw to which the male screw is screwed is formed in the lower center of the upper part corresponding to the male screw.
  • the box portion has a female screw formed in the upper center, a coupling protrusion protruding upward from the upper end of the female screw is formed, and a lower center of the upper part corresponding to the female screw and the coupling protrusion is on the female screw.
  • a male screw to be screwed is formed, and a coupling groove is formed to surround the male screw, so that the male and female coupling protrusions are coupled.
  • the box portion has a coupling groove formed in the upper center thereof, a male screw protruding upward from the upper portion of the coupling groove is formed, and the coupling groove and the lower center of the upper part corresponding to the male screw are formed in the lower center of the coupling groove.
  • a male-female coupling protrusion is formed in the groove, and a female screw is formed to surround the coupling protrusion, so that the male screw is screwed.
  • the present invention according to another aspect for achieving the above object is a fixture to be implanted in the alveolar bone; the hourglass-shaped abutment coupled to the fixture; and artificial teeth coupled to the pillars of the hourglass-shaped abutment.
  • the box part of the lower part and the box part of the lower part in a state in which the lower part and the upper part are combined forming a crown to cover the pillar portion made of the upper part; forming a hollow in the crown so that the upper part of the upper part is exposed; separating the upper part from the lower part; and separating the crown from the lower part to complete the manufacturing process.
  • the artificial tooth (prosthesis/crown) is provided with an hourglass-shaped pillar and the coupling surface coupled with the artificial tooth (prosthesis/crown) to be covered on the pillar is tightly closed.
  • attaching teeth it is possible to maintain a strong and stable bonding force even with repeated mastication by firmly attaching and fixing artificial teeth without using separate adhesives and adding other components (couplers/buffering members, etc.).
  • FIG. 1 is an assembled perspective view of an hourglass-type abutment according to a first embodiment of the present invention
  • Figure 2 is an exploded perspective view of the hourglass-shaped abutment shown in Figure 1;
  • Fig. 3 is a cross-sectional view of the hourglass-shaped abutment shown in Fig. 1;
  • FIG. 4 is a cross-sectional view illustrating a state in which the upper part shown in FIG. 3 is separated from the lower part;
  • FIG. 5 is a cross-sectional view illustrating an implant including an hourglass-shaped abutment according to Embodiment 1 of the present invention.
  • FIG. 10 is an assembled perspective view of an hourglass-type abutment according to Embodiment 2 of the present invention.
  • FIG. 11 is an exploded perspective view of the hourglass-shaped abutment shown in FIG. 10;
  • Fig. 12 is a cross-sectional view of the hourglass-shaped abutment shown in Fig. 10;
  • FIG. 13 is a cross-sectional view illustrating a state in which the upper part shown in FIG. 12 is separated from the lower part;
  • FIG. 14 is a cross-sectional view illustrating an implant including an hourglass-shaped abutment according to a second embodiment of the present invention.
  • FIG. 15 is an assembled perspective view of an hourglass-type abutment according to a third embodiment of the present invention.
  • Fig. 16 is an exploded perspective view of the hourglass-shaped abutment shown in Fig. 15;
  • Fig. 17 is a cross-sectional view of the hourglass-shaped abutment shown in Fig. 15;
  • FIG. 18 is a cross-sectional view illustrating a state in which the upper part shown in FIG. 17 is separated from the lower part;
  • FIG. 19 is a cross-sectional view illustrating an implant including an hourglass-shaped abutment according to a third embodiment of the present invention.
  • FIG. 20 is an assembled perspective view of an hourglass-type abutment according to a fourth embodiment of the present invention.
  • Fig. 21 is an exploded perspective view of the hourglass-shaped abutment shown in Fig. 20;
  • Fig. 22 is a cross-sectional view of the hourglass-shaped abutment shown in Fig. 20;
  • FIG. 23 is a cross-sectional view illustrating a state in which the upper part shown in FIG. 22 is separated from the lower part;
  • FIG. 24 is a cross-sectional view illustrating an implant including an hourglass-shaped abutment according to a fourth embodiment of the present invention.
  • 25 is a cross-sectional view showing an hourglass-shaped abutment according to a fifth embodiment of the present invention by cutting it up and down.
  • 26 is a cross-sectional view illustrating a state in which a crown is manufactured on the hourglass-shaped abutment shown in FIG. 25;
  • FIG. 1 is an assembled perspective view of an hourglass-type abutment according to a first embodiment of the present invention
  • FIG. 2 is an exploded perspective view of the hourglass-type abutment shown in FIG. 1
  • FIG. 3 is the sand illustrated in FIG. It is a cross-sectional view showing the watch-type abutment cut up and down
  • FIG. 4 is a cross-sectional view showing a state in which the upper part of the column shown in FIG. 3 is separated from the lower part.
  • the hourglass-shaped abutment 10 according to the first embodiment of the present invention includes a lower part 11, the lower part of which is fixedly coupled to the fixture (2, see FIG. 5), and the lower part It includes an upper part 12 that is detachably coupled to the upper portion of (11), for example, by screwing.
  • the lower part 11 is integrally formed on the upper part of the coupling part 111 and the coupling part 111 which is inserted and fixed into the interior of the fixture 2, as shown in FIGS. 1 and 2, and the outer diameter expands toward the top. It includes a connecting portion 112 and a box portion 113 integrally formed on the upper portion of the connecting portion 112 .
  • the coupling part 111 is fixed in such a way that, as shown in FIG. 5 , a hollow 111a is formed therein and is screwed to the inner circumferential surface of the fixture 2 through a separate set screw 3 , or the lower portion of the coupling part 111 .
  • a set screw may be integrally formed with the (see FIG. 10) to be screwed to the fixture (2).
  • connection part 112 is the coupling part 111 so that the fixing screw 3 is inserted through the inside when the coupling part 111 is fastened and fixed to the fixture 2 by the fixing screw 3 , as in FIG. 5 .
  • It may have a cylindrical structure in which the hollow 112a is formed therein, and may be formed in a structure integrally extended from the upper portion of the coupling portion 111 through machining (eg, CAM processing).
  • a lower part 11 is formed at the boundary between the coupling part 111 and the connection part 112 .
  • a stepped portion 111b is formed in which the head portion of the fixing screw 3 for fixing the to the fixture 2 is engaged in the downward direction (fixture 2 coupling direction).
  • the inner diameter of the hollow 111a formed in the coupling portion 111 may be formed to be smaller than the inner diameter of the hollow 112a of the connecting portion 112 .
  • the box portion 113 may be formed in a size smaller than the outer diameter of the lower end than the outer diameter of the upper end of the connection portion (112). Through this, a stepped portion 112b having a predetermined width is formed on the interface between the connection portion 112 and the box portion 113 , that is, on the upper surface of the connection portion 112 .
  • This stepped portion (112b) increases the bonding area by the size (width) when the artificial teeth 4 are coupled to improve the bonding force, and the crown located here is smoothly transferred to the connection portion 112 to reduce the feeling of foreign body. Increase the fracture resistance by increasing the thickness of the crown.
  • two or more box grooves 113a formed in the box portion 113 may be formed at regular intervals on the outer surface, and preferably, about three to four box grooves 113a.
  • the box groove 113a has a structure recessed from the outer surface of the box portion 113 to the center of the box portion 113, and when the artificial teeth 4 are coupled to cover the box portion 113, within a single area. It may be formed to have left and right side surfaces and a lower surface in order to maximize the contact area with the artificial teeth (4). In this case, the upper surface may be opened.
  • the box portion 113 has an upper part 12 coupled thereto. That is, the upper part 12 is screwed to the female screw 113b formed in the center of the box portion 113 with a male screw 12a protruding from the center of the lower portion.
  • the pillar portion is a portion for accommodating the artificial tooth 4, and the overall shape is made of an hourglass-like structure in order to increase the contact area with the inner surface of the artificial tooth 4 to improve the bonding force. That is, the pillar portion has a structure in which the outer diameters of the lower end and the upper end are relatively large, and the outer diameter decreases toward the central portion.
  • the upper part 12 may have a structure in which the outer diameter increases from the lower end to the upper end.
  • a male screw (12a) is protruded from the center of the lower part and is detachably screwed to the female screw (113b) formed in the upper center of the box part (113).
  • a tool groove 12b is formed for screwing the upper part 12 to the box part 113 using a tool such as a screwdriver.
  • the shape is not limited to straight, cross, or polygonal (hexagonal, etc.).
  • FIG. 5 is a cross-sectional view illustrating an implant including an hourglass-shaped abutment according to Embodiment 1 of the present invention.
  • the implant 100 includes a fixture 2 to be implanted in the alveolar bone, and an hourglass-type abutment 10 that is coupled and fixed to the fixture 2 via a set screw 3 . and an artificial tooth (prosthesis/crown) 4 that is coupled while covering the pillar portion.
  • 6 to 9 are manufacturing process diagrams sequentially illustrating the process of manufacturing the crown shown in FIG.
  • a crown 4a is formed so as to cover the pillar part in a state in which the manufactured lower part 11 and the upper part 12 are coupled to each other.
  • the crown 4a may be manufactured by casting after waxing in the case of manufacturing by waxing, and may be manufactured by camming in the case of manufacturing through digital operation.
  • the hollowness of the crown 4a is optimized through a process of attaching and detaching the upper part 12 to the lower part 11 (separation and assembly).
  • the diameter of the portion 4b to be filled with a filling material such as resin later in the hollow should be larger than the diameter of the upper part 12 to facilitate the entry of the upper part 12 .
  • the upper part 12 is separated from the lower part 1 to complete the desired shape of the crown.
  • the crown 4a manufactured in FIG. 6 is placed on the box part 113 of the lower part 11 in a state in which the upper part 12 is removed and only the lower part 11 is present.
  • the upper part 12 is introduced through the open hollow of the crown 4a and then screwed to the female screw 113b of the box part 113 using the male screw 12a and fixed.
  • the implant operation is completed by filling the open hollow of the crown 4a.
  • the pillar portion of the hourglass-shaped abutment 10 is coupled with the box portion 113 of the lower part 11 and the upper part 12 through It is formed in an hourglass-like structure.
  • the artificial tooth 4 after the pore work is finished is placed on the box part 113 of the lower part 11, and the upper part 12 is fastened to the box part 113, the artificial tooth 4 is a concave part inside the column part. Not only can he be caught in the trap, he cannot move, nor does he fall off. That is, there is no problem that the artificial tooth 4 is detached from the column part even without using an adhesive.
  • FIG. 10 is an assembled perspective view of the hourglass-type abutment according to Embodiment 2 of the present invention
  • FIG. 11 is an exploded perspective view of the hourglass-type abutment shown in FIG. 10
  • FIG. 12 is the sand illustrated in FIG. It is a cross-sectional view showing the watch-type abutment cut up and down
  • FIG. 13 is a cross-sectional view showing a state in which the upper part shown in FIG. 12 is separated from the lower part.
  • the hourglass-type abutment 20 according to the second embodiment of the present invention has a lower part 21 coupled and fixed to the fixture 2 as in the first embodiment, and a lower part ( 21) includes an upper part 22 that is detachably coupled to the upper portion of the screw coupling method.
  • the lower part 11 includes a coupling part 211 in which a male screw 211a is formed at the lower end to be screwed to the fixture 2 , a connection part 212 integrally formed on the upper part of the coupling part 211 , and a connection part 212 .
  • ) includes a box portion 213 formed on the top.
  • the upper part 22 is located on the upper part of the lower part 21 , and is detachably screwed to the box part 213 . And, as in the first embodiment, it is combined with the box part 213 to constitute the pillar part of the hourglass-shaped abutment 20 . At this time, the coupling structure between the box portion 213 and the upper part 22 is various.
  • the box portion 213 is formed with a box groove 213a, as in the first embodiment, and a male screw 213b is formed in the upper center.
  • a female screw 22a is formed in the lower center of the upper part 22 to correspond to the male screw 213b of the box portion 213 .
  • the upper part 22 has a tool groove 22b formed in the center of the upper part as shown in FIG. 11 .
  • FIG. 14 is a cross-sectional view illustrating an implant including an hourglass-shaped abutment according to a second embodiment of the present invention.
  • an hourglass-shaped abutment 20 is fixed to the fixture 2 via a male screw 211a to the coupling portion 211 of the lower part 21 . and the upper part 22 is detachably screwed to the male screw 213b formed in the box portion 213 through the female screw 22a to form the pillar portion of the abutment 20 having an hourglass-shaped structure.
  • FIG. 15 is an assembled perspective view of the hourglass-type abutment according to the third embodiment of the present invention
  • FIG. 16 is an exploded perspective view of the hourglass-type abutment shown in FIG. 15
  • FIG. 17 is the sand shown in FIG. It is a cross-sectional view showing the watch-type abutment cut up and down
  • FIG. 18 is a cross-sectional view showing a state in which the upper part shown in FIG. 17 is separated from the lower part.
  • the hourglass-shaped abutment 30 according to the third embodiment of the present invention includes a lower part 31 and an upper part 32 as in the first and second embodiments. .
  • the lower part 31 is integrally formed with the coupling part 311 in which the male screw 311a is formed at the lower end to be screwed to the fixture 2, and the coupling part 311, as in the first and second embodiments. It includes the formed connection part 312 and the box part 313 formed on the upper part of the connection part 312 .
  • the upper part 32 is detachably screwed to the box part 313 of the lower part 31 .
  • the box part 313 has a box groove 313a, and a female screw 313b having a screw thread is formed in the upper center, and protrudes upward from the upper end of the female screw 313b.
  • a coupling protrusion 313c is formed.
  • a male screw 32a screwed to the female screw 313b of the box portion 313 is formed, and is recessed to surround the male screw 32a.
  • a coupling groove (32b) is formed to which the male and female coupling protrusions (313c) are formed.
  • a tool groove 32c is formed in the upper center of the upper part 42 .
  • FIG. 19 is a cross-sectional view illustrating an implant including an hourglass-shaped abutment according to a third embodiment of the present invention.
  • the hourglass-shaped abutment 30 is fixed to the fixture 2 through the male screw 311a formed in the coupling part 311 of the lower part 31 .
  • the box portion 313 and the upper part 32 of the lower part 31 are screwed between the female screw 313b and the male screw 32a, and the male and female coupling between the coupling protrusion 313c and the coupling groove 32b. are combined
  • FIG. 20 is an assembled perspective view of the hourglass-type abutment according to the fourth embodiment of the present invention
  • FIG. 21 is an exploded perspective view of the hourglass-type abutment shown in FIG. 20
  • FIG. 22 is the sand shown in FIG. It is a cross-sectional view showing the watch-type abutment cut up and down
  • FIG. 23 is a cross-sectional view showing a state in which the upper part shown in FIG. 22 is separated from the lower part.
  • the hourglass-shaped abutment 40 according to the fourth embodiment of the present invention includes a lower part 41 and an upper part 42 similarly to the above-described embodiments.
  • the lower part 41 includes a coupling part 411 having a male screw 411a formed at the lower end to be screwed to the fixture 2, a coupling part 412 integrally formed on the upper part of the coupling part 411, and a connection part 412 ) includes a box portion 413 formed on the top.
  • the upper part 42 is detachably screwed to the box portion 413 of the lower part 41 .
  • the box portion 413 has a plurality of box grooves 413a formed along the circumferential surface, and a coupling groove 413b is formed in the upper center, and the coupling groove 413b. ), a male screw 413c protruding upward is formed on the upper part.
  • a coupling protrusion 42a that is male and female coupled to the coupling groove 413b of the box 413 is formed, and the coupling protrusion 42a is formed.
  • a screw thread is formed on the inner circumferential surface to surround, and a female screw 42b to which a male screw 413c is screwed is formed.
  • a tool groove 42c is formed in the upper center of the upper part 42 .
  • FIG. 24 is a cross-sectional view illustrating an implant including an hourglass-shaped abutment according to a fourth embodiment of the present invention.
  • the hourglass-shaped abutment 40 is fixed to the fixture 2 through the male screw 411a formed in the coupling portion 411 of the lower part 41 . and the box portion 413 of the upper part 42 and the lower part 41 is coupled by a male and female coupling between the coupling protrusion 42a and the coupling groove 413b and a screw coupling between the male screw 413c and the female screw 42b. do.
  • FIG. 25 is a cross-sectional view showing the hourglass-type abutment according to the fifth embodiment of the present invention cut up and down, and FIG. It is a cross section.
  • the hourglass-type abutment 50 according to the fifth embodiment of the present invention provides a method of reducing the size of the hole in the occlusal surface of the crown in the hourglass-type structure.
  • the diameter of the occlusal side of the crown can be reduced. That is, by forming a small diameter of the upper part 52 at the boundary between the lower part 51 and the upper part 52, the diameter d of the hole h generated in the occlusal surface of the crown can also be reduced.
  • 'B' denotes a crown when the occlusal surface is wide
  • 'C' denotes a crown when the occlusal surface is narrow.
  • '511' denotes a coupling part
  • '512' denotes a connection part
  • '513' denotes a box part

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  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Dental Prosthetics (AREA)

Abstract

La présente invention concerne un pilier prothétique dentaire et un procédé de fabrication d'une couronne l'utilisant. En particulier, la présente invention concerne un pilier prothétique de type sablier comprenant une partie de colonne de type sablier, et un procédé de fabrication d'une couronne l'utilisant, dans lequel, par inclusion d'une partie de colonne, comme un sablier, dont la partie centrale est mince et les côtés gingivaux et occlusaux ont un diamètre supérieur, une fixation robuste est permise même sans utiliser d'adhésif en permettant à une dent artificielle (prothèse/couronne) d'être étroitement accouplée à la partie de colonne, et une force d'accouplement plus stable peut être maintenue même pendant la mastication répétée.
PCT/KR2021/017773 2020-12-10 2021-11-29 Pilier prothétique de type sablier et procédé de fabrication de couronne l'utilisant WO2022124666A1 (fr)

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CN113952054A (zh) * 2021-12-04 2022-01-21 西安工程大学 一种方位可调、平台转移的高稳定性螺丝固定基台组件
KR102480664B1 (ko) * 2022-01-18 2022-12-27 이노덴 주식회사 비접착식 픽스쳐 일체형 어버트먼트 및 이를 구비한 임플란트
KR102625833B1 (ko) 2023-05-22 2024-01-16 이노덴 주식회사 크라운 파절 방지 기능을 갖는 치과용 임플란트 시스템

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