WO2020039651A1 - Élément de recouvrement - Google Patents

Élément de recouvrement Download PDF

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Publication number
WO2020039651A1
WO2020039651A1 PCT/JP2019/016681 JP2019016681W WO2020039651A1 WO 2020039651 A1 WO2020039651 A1 WO 2020039651A1 JP 2019016681 W JP2019016681 W JP 2019016681W WO 2020039651 A1 WO2020039651 A1 WO 2020039651A1
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WO
WIPO (PCT)
Prior art keywords
fixture
main body
cover screw
cover member
hole
Prior art date
Application number
PCT/JP2019/016681
Other languages
English (en)
Japanese (ja)
Inventor
小林　健一郎
薫 櫻井
Original Assignee
小林　健一郎
株式会社プラトンジャパン
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 小林　健一郎, 株式会社プラトンジャパン filed Critical 小林　健一郎
Publication of WO2020039651A1 publication Critical patent/WO2020039651A1/fr

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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

Definitions

  • the present invention relates to a cover member attached to a hole provided in a fixture and serving as a fastening portion with an abutment in a process of implant treatment.
  • implant treatment is known (for example, see Patent Document 1).
  • a fixture implanted (implanted) in an implant fossa formed in a patient's jaw bone.
  • An abutment to which an artificial tooth is attached is fastened to the implanted fixture (for example, see Patent Document 1).
  • FIG. 4 shows a cross section of a conventional fixture F to be implanted in the jaw bone B of a patient.
  • the conventional fixture F is implanted such that the upper surface thereof is approximately the same height as the surface of the jaw bone B.
  • the surface portion of the jaw bone B in contact with the fixture F is absorbed and falls down as shown in FIG. It may be in a state. If the jaw bone B is absorbed, the area of the connection (osseointegration, osseointegration) between the fixture F and the jaw bone B decreases, and the fixture F may become unstable.
  • the fixture F is desirably short (for example, about 4 mm) in consideration of invasion to the patient.
  • it has conventionally been difficult to use the short fixture F.
  • One embodiment of the present invention has been made in view of the above, and has an object to provide a cover member that can securely and appropriately couple a patient's jaw bone and a fixture or the like.
  • a cover member is a cover member attached to a hole serving as a fastening portion with an abutment, provided on a fixture, in a process of implant treatment, A pillar-shaped main body fitted at one end to the hole of the fixture, and a projection provided on a side surface of the main body in a circumferential direction of the main body, and a surface facing the one end of the projection. At least a part of the side surface of the main body, which is continuous with the surface facing the one end of the overhang portion and is near the surface facing the one end, is mirror-finished.
  • the cover member according to one embodiment of the present invention is used as follows. First, an implant fossa is formed in the patient's jawbone that is deeper than the length of the fixture. Subsequently, the fixture is implanted in the implant fossa. Subsequently, a cover member is attached to the fixture. At this time, a gap is formed between the protrusion of the cover member and the fixture. In addition, the cover member is inserted into the implant cavity so that the surface facing the one end side of the overhang portion of the cover member is not exposed from the implant cavity until the surface fits into the implant cavity.
  • the jawbone regenerates to fill this space.
  • the regenerated jawbone is positioned up to the upper part of the fixture (opening side of the implant fossa) and is in a state of wrapping around the fixture.
  • the cover member is temporarily attached to the fixture until the abutment is attached in the course of implant treatment. Therefore, the cover member must be able to be reliably removed even after the jawbone has been regenerated.
  • a portion of the side surface of the cover member forming the space that is, a surface facing the one end side of the overhang portion, and a side surface of the main body portion following the surface facing the one end side of the overhang portion and facing the one end side. At least a part of the portion near the surface is mirror-finished. By performing the mirror finishing, it is possible to prevent the regenerated jaw bone from being bonded to the cover member. This allows the cover member to be reliably removed even after the jawbone has been regenerated. Therefore, according to the cover member according to the embodiment of the present invention, the jaw bone of the patient, the fixture and the abutment can be securely and appropriately connected.
  • the overhang portion may be a protrusion projecting to one end side, and may have a protrusion provided so as to surround the side surface of the main body portion and form an annular concave portion with the main body portion. According to this configuration, the surface area of the portion forming the space in the cover member can be increased, and as a result, the surface area of the jaw bone to be regenerated can be increased, and the connection between the jaw bone and the abutment can be further improved. Can be stronger.
  • the jaw bone of the patient, the fixture and the abutment can be securely and appropriately connected.
  • FIG. 3 is a cross-sectional view of a cover screw, which is a cover member according to an embodiment of the present invention, attached to a fixture implanted in a patient's jawbone.
  • FIG. 3 is a cross-sectional view of an abutment fastened to a fixture implanted in a patient's jawbone. It is a figure which shows the fixture state in the conventional jawbone of a fixture.
  • FIG. 1 shows a cover screw 1 which is a cover member according to the present embodiment.
  • the cover screw 1 is a member that is attached to a hole provided in the fixture and blocks the hole in the course of implant treatment.
  • the hole provided in the fixture is a hole serving as a fastening portion with the abutment.
  • FIG. 1 is a cross-sectional view in a cross section passing through the axis of the cover screw 1.
  • FIG. 2 shows a state in which the fixture F is implanted in the implant cavity 14 formed in the jaw bone B of the patient, and the cover screw 1 according to the present embodiment is attached to the fixture F.
  • the upper and lower sides are based on the states shown in FIGS.
  • the cover screw 1 according to the present embodiment is used in a two-time method in which gingival incision and peeling operation is required twice.
  • the two-time method is performed as follows. First, the implant F is formed in the jawbone of the patient by the first incision and peeling operation, and the fixture F is implanted.
  • the fixture F is a columnar (for example, columnar) member.
  • the fixture F is provided with a hole F ′ serving as a fastening portion with the abutment from the end face to the inside.
  • the fixture F is implanted in the implant cavity 14, it is arranged in such a manner that the hole F 'can be seen from the opening of the implant cavity 14.
  • the fixture F the same as the conventional one can be used.
  • those having a shorter axial length or those having a shorter length (for example, about 4 mm) than the conventional fixture can be used.
  • the short fixture F invasion to the patient can be suppressed.
  • the diameter of the implant cavity 14 is slightly larger than the diameter of the fixture F so that the fixture F can be implanted.
  • the depth of the implant cavity 14 in the present embodiment is made greater than the length of the fixture F in the axial direction.
  • the depth of the implant cavity 14 is set to such a depth that a space formed by the fixture F and the cover screw 1 is located in the implant cavity 14 as described later. Specifically, for example, when the length of the fixture F in the axial direction is about 4 mm, the depth of the implant cavity 14 is about 5 mm.
  • the cover screw 1 is attached to the hole F 'of the fixture F. Thereafter, the cover screw 1 is completely covered with the gingiva G so as not to be exposed, and the healing of the jaw bone B is awaited in this state.
  • the cover screw 1 By attaching the cover screw 1 to the hole F 'of the fixture F, it is possible to prevent the regenerated jaw bone B and gingiva G from entering the hole F' of the fixture F when the jaw bone B is healed.
  • a second incision and peeling operation is performed, the cover screw 1 is removed from the hole F ′ of the fixture F, and the abutment is fastened.
  • the cover screw 1 includes a column-shaped main body 10 and a projection 20 provided on a side surface of the main body in a circumferential direction of the main body.
  • the main body 10 is fitted into the hole F 'of the fixture F at one end.
  • the main body 10 has a substantially columnar shape.
  • the main body 10 includes a base portion 11 on the side fitted with the fixture F, and a head portion 12 on the side exposed from the hole F ′ when the cover screw 1 is fitted into the hole F ′ of the fixture F.
  • the base 11 and the head 12 are defined for convenience of description, and the boundary between the base 11 and the head 12 may vary depending on the fixture F used, the state of attachment of the cover F to the fixture F, and the like.
  • the diameter of the base portion 11 is made slightly smaller than the diameter of the hole F 'of the fixture F so as to fit into the hole F' of the fixture F.
  • the base portion 11 is provided with a groove for fitting with the fixture F. Note that a groove for fitting with the cover screw 1 and the abutment is also provided in the hole F 'of the fixture F at a position corresponding to the groove of the base 11 (not shown).
  • the diameter of the one end 12a on the base 11 side of the head 12 is substantially the same as the diameter of the boundary between the base 11 and the head 12 or the diameter of the hole F 'of the fixture F.
  • the head 12 is provided with a hole 12c, and the opening of the hole 12c is located on the end face 12b of the other end of the head 12 where the overhang 20 is provided.
  • the hole 12c is for inserting an instrument when the cover screw 1 is attached to or detached from the fixture F.
  • the overhang portion 20 has a shape that expands in a circular shape from the head portion 12 of the main body portion 10. That is, the shape of the projecting portion 20 when viewed from the direction of the axis 10a of the main body 10 is circular. Note that the axis 10 a of the main body 10 corresponds to the axis of the cover screw 1.
  • the overhang portion 20 has, for example, an outer diameter approximately the same as the outer diameter of the fixture F (specifically, approximately 4 to 5 mm in diameter). It has a thickness (length in the direction of the axis 10a) of about several mm (specifically, about 0.7 mm).
  • the overhang portion 20 is provided along the end surface 12b of the other end of the head 12 in the direction of the axis 10a.
  • the cover screw 1 is arranged such that the surface of the overhang portion 20 on the base portion 11 side is not exposed from the opening of the implant cavity 14. That is, the depth of the implant cavity 14 is set to a depth at which the surface of the projecting portion 20 on the base portion 11 side can be located in the implant cavity 14.
  • the end surface 12b of the head 12 and the upper end surface 20b of the overhanging portion 20 are separated from the bone edge, which is the surface of the jaw bone B, by, for example, 0.1 mm in the example of FIG. It is made to come out about several mm.
  • the upper end surfaces 12b and 20b of the head 12 and the overhanging portion 20 come into contact with the gingiva G when covered with the gingiva G.
  • the overhang portion 20 has a projection 20a protruding toward the side to be fitted with the fixture F, that is, toward the base portion 11 side.
  • the protrusion 20 a is provided on an outer edge portion of the overhang 20.
  • the protrusion 20 a has an annular (ring donut) shape surrounding the side surface of the head 12 of the main body 10, and the tip of the protrusion 20 a is separated from the head 12 of the main body 10.
  • a concave portion 21 which is an annular concave (dent) is formed between the convex portion 20a and the head portion 12 of the main body portion 10.
  • the thickness of the protruding portion 20a of the protruding portion 20, that is, the length in the direction of the axis 10a is equal to 0. It is about several mm (specifically, about 0.2 mm). Therefore, the depth of the concave portion 21 has the same value.
  • the boundary between the head 12 and the base 11 and the tip of the projection 20a of the overhang 20 have a constant length L1 in the direction of the axis 10a.
  • the length L1 is, for example, 0. It is about several mm (specifically, about 0.5 mm).
  • the cover screw 1 may be configured to have a gap corresponding to the length L1 described above with respect to the fixture F.
  • the length in the direction of the axis 10a from the surface where the end face of the base portion 11 abuts when the cover screw 1 is fitted to the upper surface of the fixture F that is, the opening surface of the hole F'.
  • the length L3 in the direction of the axis 10a from the end face of the base 11 of the cover screw 1 to the tip of the projection 20a is set to be longer than L2.
  • the above-mentioned gap may be formed by adjusting the degree of fastening (screw-in).
  • a predetermined portion 30 of the cover screw 1 forming the space S is mirror-finished so that the cover screw 1 can be easily removed from the fixture F.
  • the predetermined portion 30 is a surface of the overhanging portion 20 on the base portion 11 side, that is, a portion forming the annular concave portion 21, and a side surface of the head 12.
  • the side surface of the head 12 is, in other words, a portion of the side surface of the main body 10 that follows the surface of the overhanging portion 20 on the base portion 11 side and is near the surface on the base portion 11 side.
  • the portion 30 is a portion exposed from the fixture F, and is a portion that can come into contact with the regenerated jaw bone B after the cover screw 1 is mounted in the oral cavity of the patient.
  • the mirror finishing is performed, for example, by a conventionally known method.
  • the portion to be mirror-finished is not necessarily the entire portion 30 described above, and may be at least a part of the portion 30.
  • the tip of the projection 20a may be chamfered.
  • the outer side surface of the overhang portion 20 including the protrusion 20a may have a slightly smaller diameter as it goes downward. However, the side surface may have a larger diameter as it goes downward, or may have a constant diameter.
  • a portion between the tip and the root of the protrusion 20a, that is, the outer and inner side surfaces of the protrusion 20a may be formed by a concave surface. However, the side surface may be configured as a flat surface or a raised surface.
  • the shape of the jawbone to be regenerated when the cover screw 1 is attached to the fixture F is in accordance with the shape of the projection 20a. By making the shape of the convex portion 20a as described above, the jaw bone B and the abutment are strongly coupled to each other when the cover screw 1 is removed and the abutment is fastened to the fixture F. it can.
  • the main body 10 and the overhang 20 may be formed integrally.
  • the main body 10 and the overhang 20 may be made of, for example, titanium, similarly to a conventional cover screw.
  • the head portion 12 and the overhang portion 20 of the main body portion 10 that are in contact with the patient's gingiva G are made of zirconia ceramic having little influence on the patient's gingiva G, and the base portion 11 of the main body portion 10 fitted with the fixture F is provided. May be made of titanium.
  • the above is the configuration of the cover screw 1 according to the present embodiment.
  • the regenerated jaw bone B enters the space S between the cover screw 1 and the fixture F as described above.
  • the regenerated jaw bone B is positioned above the fixture F (on the side of the opening of the implant cavity 14) and is in a state of wrapping around the fixture F.
  • the cover screw 1 is removed and the abutment A is fastened to the fixture F, the abutment A and the jaw bone B of the space S are eventually combined.
  • the shape of the portion of the abutment A to be embedded in the jaw bone B used at this time may be a shape (for example, the same shape) corresponding to the shape of the cover screw 1 described above.
  • a portion corresponding to the space S of the cover screw 1 is mirror-finished.
  • the mirror finishing it is possible to prevent the regenerated jaw bone B from being coupled to the cover screw 1.
  • the cover screw 1 can be reliably removed. Therefore, according to the present embodiment, the jaw bone B of the patient, the fixture F, and the abutment A can be securely and appropriately connected.
  • the present embodiment it is possible to prevent the jaw bone B from being absorbed near the side surface of the fixture F as shown in FIG. As a result, the short fixture F can be used as described above, and invasion to the patient can be suppressed.
  • the projecting portion 20a may be provided on the projecting portion 20 of the cover screw 1. According to this configuration, the surface area of the portion forming the space S of the cover screw 1 can be increased, and as a result, the surface area of the regenerated jaw bone B can be increased. The bond can be stronger.
  • the convex portion 20a is not necessarily provided, and the surface of the overhanging portion 20 on the base portion 11 side may be flat.
  • the cover member according to the present invention is the cover screw 1.
  • the cover member is not necessarily a cover screw, and may be any member that can be attached to a hole provided in the fixture.
  • the cover member according to the present invention may be a cover cap, a healing screw, or the like.

Abstract

La présente invention permet d'accoupler de manière fiable et appropriée l'os de la mâchoire d'un patient à un appareil ou analogue. Une vis de recouvrement 1 est un élément de recouvrement qui doit être fixé à un trou qui est situé dans un appareil et sert de partie de fixation à laquelle une butée est reliée dans un procédé de traitement d'implant. La vis de recouvrement 1 comprend un corps de type pilier 10 qui doit être accouplé avec le trou de l'appareil sur un côté d'extrémité et une partie en saillie 20 qui est disposée sur une surface latérale du corps 10 de manière circonférentielle le long du corps. Au moins une partie d'une surface de la partie en saillie 20 orientée vers ledit un côté d'extrémité et une partie 30 de la surface latérale du corps 10 qui est continue avec la surface de la partie en saillie 20 orientée vers ledit un côté d'extrémité et qui est proche de la surface orientée vers ledit côté d'extrémité sont en miroir.
PCT/JP2019/016681 2018-08-24 2019-04-18 Élément de recouvrement WO2020039651A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018157114A JP6723300B2 (ja) 2018-08-24 2018-08-24 カバー部材
JP2018-157114 2018-08-24

Publications (1)

Publication Number Publication Date
WO2020039651A1 true WO2020039651A1 (fr) 2020-02-27

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PCT/JP2019/016681 WO2020039651A1 (fr) 2018-08-24 2019-04-18 Élément de recouvrement

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WO (1) WO2020039651A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7217302B2 (ja) * 2021-03-02 2023-02-02 健一郎 小林 インプラント構造体及びアバットメント

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07184933A (ja) * 1993-12-27 1995-07-25 Kyocera Corp 人工歯根
EP0864299A1 (fr) * 1997-03-10 1998-09-16 Stiftung für klinische Forschung (SKF) zur Förderung der oralen Gesundheit Dispositif dentaire ou emplantologique de dosage
KR101535294B1 (ko) * 2014-05-14 2015-07-10 최종훈 디지털 힐링 어버트먼트
CN107303203A (zh) * 2016-04-22 2017-10-31 合镒技研股份有限公司 齿槽膜
EP3251628A1 (fr) * 2016-06-01 2017-12-06 Njomngang Olivier Domingang Capuchon de cicatrisation pour une molaire et prothese provisoire pour une molaire

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000083970A (ja) * 1998-09-14 2000-03-28 Gc Corp 歯科インプラント用カバースクリュー
US6688887B2 (en) * 2001-03-09 2004-02-10 Debbie, Llc Method and apparatus for replicating the position of intra-osseous implants and abutments relative to analogs thereof
KR100677870B1 (ko) * 2006-05-29 2007-02-02 주식회사 메가젠 치유 지대주 및 그를 구비한 치과용 임플란트
US20110244425A1 (en) * 2009-02-02 2011-10-06 Joseph Wiener Universal healing abutment
JP5553293B1 (ja) * 2014-01-21 2014-07-16 優一郎 河原 歯科用インプラント
US11219510B2 (en) * 2015-11-20 2022-01-11 Nobel Biocare Services Ag Healing cap with scannable features

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07184933A (ja) * 1993-12-27 1995-07-25 Kyocera Corp 人工歯根
EP0864299A1 (fr) * 1997-03-10 1998-09-16 Stiftung für klinische Forschung (SKF) zur Förderung der oralen Gesundheit Dispositif dentaire ou emplantologique de dosage
KR101535294B1 (ko) * 2014-05-14 2015-07-10 최종훈 디지털 힐링 어버트먼트
CN107303203A (zh) * 2016-04-22 2017-10-31 合镒技研股份有限公司 齿槽膜
EP3251628A1 (fr) * 2016-06-01 2017-12-06 Njomngang Olivier Domingang Capuchon de cicatrisation pour une molaire et prothese provisoire pour une molaire

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JP2020028589A (ja) 2020-02-27

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