WO2013054935A1 - インプラント構造体 - Google Patents
インプラント構造体 Download PDFInfo
- Publication number
- WO2013054935A1 WO2013054935A1 PCT/JP2012/076622 JP2012076622W WO2013054935A1 WO 2013054935 A1 WO2013054935 A1 WO 2013054935A1 JP 2012076622 W JP2012076622 W JP 2012076622W WO 2013054935 A1 WO2013054935 A1 WO 2013054935A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- abutment
- artificial tooth
- tooth root
- implant structure
- artificial
- Prior art date
Links
Images
Classifications
-
- 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
- A61C13/00—Dental prostheses; Making same
- A61C13/08—Artificial teeth; Making same
-
- 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
- A61C8/0018—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
- A61C8/0025—Self-screwing with multiple threads
-
- 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
-
- 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
Definitions
- the present invention relates to an implant structure for the purpose of preventing and inhibiting the bone resorption of the upper margin of the implant by suppressing direct arrival of bacteria and substances that promote their propagation to the joint between the implant and gingiva and bone. It is.
- an implant treatment in which an artificial tooth root with an external thread formed on the outer periphery is embedded in the jawbone and the artificial tooth is attached to the artificial tooth root is becoming widespread.
- An artificial tooth root is embedded in a jawbone that has lost its teeth, and serves as a base for artificial teeth to be mounted thereon.
- the artificial dental root is screwed and inserted into a hole of a jaw bone formed to have the same size as the artificial dental root, and a bone is formed around the artificial dental root to join the artificial dental root and the jaw bone.
- the hole in the bone is large relative to the artificial root or if the surrounding bone is rough, it will take a long time to connect to the jaw bone, or the artificial root will not eventually connect firmly to the jaw bone. There is.
- periodontal ligament or periodontal ligament that supports teeth against bone and gingiva because the connective tissue of the living body cannot directly connect to the artificial tooth root. Therefore, various substances in the oral cavity invade between the bone and the artificial tooth root, and bacterial infection and gingiva and bone inflammation are continuously caused thereby, and bone resorption around the implant proceeds. As a result, the epithelium (gingiva) extends toward the bottom of the hole formed in the jawbone (downgrowth), that is, the gum extends so as to be interposed between the artificial tooth root and the jawbone, and the joint between the artificial tooth root and the jawbone is Disappear.
- Patent Document 1 includes a columnar insertion portion 101 and an upper head 102 provided at the upper end of the insertion portion 101.
- An artificial dental root 100 is disclosed, which is at least partially composed of a guide layer 103 having a three-dimensional structure for inducing bone cells and / or epithelial cells. According to the artificial tooth root 100, the induction layer 103 is provided, so that the gingiva can be guided so as to cover the artificial tooth root 100 on the upper part of the artificial tooth root 100, and the downgrowth of the gingiva can be prevented.
- the induction layer 103 can prevent gingival downgrowth as compared with the case where the induction layer 103 is not provided.
- the induction layer 103 for inducing gingiva is provided, the induction layer 103 is made of food or the like.
- the guide layer 103 systematically connects the artificial tooth root to the bone and gingival connective tissue.
- an object of the present invention is to provide an implant structure in which a substance that promotes bacterial growth is hardly induced.
- An implant structure has a distal end portion and a proximal end portion, and is provided on an outer periphery of the artificial root main body with a screw formed at least on the distal end side, and on the outer periphery of the proximal end portion of the artificial dental root main body, and induces soft tissue And an abutment having a covering portion attached to the artificial tooth root and covering the entire base end side of the guide portion on the base end side.
- the step portion is provided along the outer periphery from the covering portion to the distal end side of the abutment.
- the stepped portion has a tapered shape whose diameter decreases as the distance from the abutment base end of the covering portion increases.
- the outer periphery of the covering portion is formed so as to be along the outer periphery of the guide portion.
- a crown is fixed to the abutment.
- the guiding portion has a three-dimensional structure in which a porosity of 10 to 90% is obtained by entanglement of fibers having a diameter of 5 to 100 ⁇ m and high biocompatibility.
- the stepped portion receives a substance that promotes bacterial growth, and the substance that promotes bacterial growth is prevented from reaching the induction layer directly, so that it is easy to suppress downgrowth. .
- (A) is the whole top view of the implant structure of this invention
- (b) is a fragmentary sectional view which shows the cross section of the artificial tooth root in the implant structure of this invention. It is sectional drawing for demonstrating the abutment of the implant structure of this invention. It is a fragmentary sectional view which shows the implant structure in which the guidance
- the implant structure 1 of the present invention includes an artificial root body 2 having a distal end portion 21 and a proximal end portion 22 and having a screw T formed at least on the distal end portion 21 side, and an artificial dental root body 2.
- An artificial tooth root 4 provided on the outer periphery of the base end portion 22 and including the guide portion 3 for guiding soft tissue, and a covering portion 51 attached to the artificial tooth root 4 and covering the entire surface of the guide portion 3 on the base end portion 22 side. Is provided on the abutment base end 5P side.
- the “tip portion” refers to an end portion of the artificial tooth root 4 on the side to be inserted into the jawbone, that is, an end portion of the artificial tooth root 4 in the lower direction in FIG. 1A and FIG. "Means the end opposite to the tip 21 of the artificial tooth root 4 to which the abutment 5 is attached.
- the “abutment base end” means an end portion on the side where the abutment 5 is attached to the artificial tooth root 4 (in FIG. 1 (a), (b) and FIG.
- the “abutment tip”, which will be described later, is the end of the abutment 5 opposite to the abutment base end 5P (the paper surface of the abutment 5 in FIGS. 1A and 1B and FIG. 2). The upper end).
- the artificial tooth root 4 is provided on the outer periphery of the artificial tooth root body 2 fixed by a screw T fixed to a hole formed in the jaw bone and the proximal end portion 22 of the artificial tooth root body 2, and the artificial tooth root 4 is attached to the jaw bone. And a guiding portion 3 for guiding soft tissue (gingiva) later.
- the artificial tooth root body 2 In order to fix the artificial tooth root 4 to the jawbone, the artificial tooth root body 2 only needs to have at least a part of the screw T formed on the distal end portion 21 side, from the distal end portion 21 side to the proximal end portion 22 side of the artificial tooth root 4.
- the screw T may be provided on the entire side surface of the artificial root body 2.
- the artificial tooth root body 2 is formed with an engagement hole 23 extending from the base end portion 22 side of the artificial tooth root 4 to the lower side of the axis X (see FIG. 1) of the artificial tooth root 4 and having an internal thread.
- An abutment-side engaging portion 53 (see FIG. 2) extending from the abutment base end 5P of the abutment 5, which is a fixing means such as a male screw described later, is inserted into the engagement hole 23 and fixed.
- the abutment 5 has the crown 6 (see FIG. 4)
- the abutment 5 is provided on the abutment 5 to support the crown 6 in the same manner as the abutment side engaging portion 53 shown in FIG.
- a shaft (not shown in FIG. 4) is inserted and fixed.
- the abutment 5 includes a case where it is an abutment and a case where it is a healing cap.
- the distal end portion 21 can have the shape and structure used in a conventional implant structure, but the angle of the distal end portion 21 is 15 depending on the site of the implantation portion in the jawbone and the diameter of the artificial root main body 2. By setting the angle to ⁇ 75 °, the connection with the jawbone can be strengthened. Moreover, the front-end
- the artificial tooth root body 2 is not particularly limited as long as it is a material having high biocompatibility. For example, titanium or titanium alloy, zirconia, or the like having high biocompatibility can be used.
- the outer diameter of the artificial tooth root 4 on the proximal end portion 22 side is larger than the outer diameter of the screw T of the artificial tooth root body 2 (the outer diameter of the upper screw T in FIGS. 1A and 1B).
- the gap between the artificial root body 2 and the jawbone can be further prevented, and the occurrence of downgrowth can be prevented.
- the guiding portion 3 is provided on the outer periphery of the proximal end portion 22 of the artificial root body 2.
- the outer diameter of the artificial tooth root body 2 on the proximal end part 22 side of the artificial tooth root 4 is partially or entirely along the periphery depending on the part where the guide part 3 is provided. The diameter is reduced by the width of 3. That is, as shown in FIGS. 1A and 1B, the guiding portion 3 may be formed in a ring shape so as to surround the entire outer periphery of the proximal end portion 22 of the artificial root 4, or the proximal end portion 22. It may be provided in pieces along the outer periphery of the.
- the guiding portion 3 is for inducing soft tissue such as gums, and the structure and material are not particularly limited as long as it can induce soft tissue.
- an inducing portion 3 for example, one having a three-dimensional structure in which a fiber having a biocompatibility with a diameter of 5 to 100 ⁇ m is entangled to have a porosity of 10 to 90% can be used.
- the guiding portion 3 has a three-dimensional structure in which fibers having a diameter of 5 to 100 ⁇ m and high biocompatibility are entangled to have a porosity of 10 to 90%, soft tissues such as gums are placed in the fiber gaps of the guiding portion 3. In order to actively enter and settle, the artificial tooth root 4 and the soft tissue are connected without a gap.
- the pore size of the guiding part 3 having this three-dimensional structure is preferably 2 to 500 ⁇ m, particularly 50 to 200 ⁇ m.
- fibers having high biocompatibility titanium fibers or titanium alloy fibers which are fibers of non-bioabsorbable materials, metal fibers such as stainless steel, gold, platinum, cobalt alloys, polypropylene fibers, polyethylene terephthalate fibers, polyesters And synthetic resin fibers such as fluororesin.
- Polylactic acid, chitin, chitosan, polycaprolactone, polyglycolic acid, starch, collagen, etc., which are fibers of a bioabsorbable material, may also be used.
- ⁇ -tricalcium phosphate and ⁇ -tricalcium phosphate which are bioabsorbable ceramics
- hydroxyapatite, alumina, zirconia, carbon, calcium phosphate, crystallized glass which are bioabsorbable ceramics.
- Titanium nitride, titanium carbide and the like are bioabsorbable ceramics.
- fibrin that is a factor in blood a cytokine-inducing factor such as a cell-inducing factor and a blood vessel-inducing factor, a platelet-derived growth factor, etc. may be introduced. This further promotes cell induction. These may be extracted from natural products (the person being treated or other ecology) or may be artificially generated. Moreover, you may make it absorb the bioactive substance or bioactivity adjuvant which activates a biological cell.
- the distal end portion 21 and the proximal end portion 22 of the artificial tooth root 4 in order to induce bone cells and easily generate new bone, and to make the generated new bone easily entangled, the distal end portion 21 and the proximal end portion 22 of the artificial tooth root 4.
- the artificial tooth root 4 can be more stably fixed to the jawbone.
- the abutment 5 is used as a healing cap for a predetermined period after the treatment until it is attached to the artificial root 4 and the surrounding gingiva is formed, or until the artificial root body 2 and the jawbone are firmly bonded. It can be used either when used (see FIG. 2 etc.) or when used as an abutment 5 with a crown 6 (see FIG. 4).
- the abutment 5 is provided with an abutment-side engaging portion 53 having a male screw for engaging with the engaging hole 23 in which the female screw of the artificial tooth root 4 is formed.
- FIG. 2 the abutment-side engaging portion 53 having a male screw for engaging with the engaging hole 23 in which the female screw of the artificial tooth root 4 is formed.
- the abutment 5 and the artificial tooth root 4 are attached by screwing the abutment 5 into the engagement hole 23 of the artificial tooth root 4, but the abutment 5 and the artificial tooth root 4 are firmly fixed. If it can do, it is not limited to the aspect shown in FIG.
- a substantially cylindrical portion 54 is further provided on the stepped portion 52.
- the structure can be easily removed and attached. If so, it is needless to say that the substantially cylindrical portion 54 on the stepped portion 52 is not provided, but may have a substantially truncated cone shape or other shapes.
- the abutment 5 is not particularly limited as long as it is a material having high biocompatibility like the artificial root main body 2, but for example, titanium or titanium alloy having high biocompatibility can be used. .
- the abutment 5 attached to the artificial tooth root 4 is, as shown in FIGS. 1A, 1B and 2, the entire surface on the base end 22 side of the guide portion 3 (upper side of the guide portion 3 in FIG. 1). Is provided on the abutment base end 5P side.
- the covering portion 51 is a portion for covering the guide portion 3 from the upper side in FIG.
- the covering portion 51 covers the entire surface of the guiding portion 3 on the base end portion 22 side (the upper side in FIG. 1), so that a substance that promotes bacterial growth can reach the guiding portion 3 directly from the base end portion 22 side.
- the covering portion 51 is not particularly limited as long as it can cover at least the entire surface of the guiding portion 3 on the base end portion 22 side, and the covering portion 51 protrudes beyond the outer periphery of the guiding portion 3.
- the covering portion 51 may be formed so as to increase in the outer diameter direction of the artificial dental root body 2.
- the outer periphery of the covering portion 51 is preferably formed along the outer periphery of the guiding portion 3 in order to reliably cover the guiding portion 3.
- the abutment 5 has a stepped portion 52 extending along the outer periphery from the covering portion 51 to the abutment tip 5D side of the abutment 5 (in FIG. 1, above the abutment 5).
- the stepped portion 52 is not limited to the tapered stepped portion 52 that decreases in diameter as it moves away from the proximal end portion 22 shown in FIG. 1, and the axial center X (see FIG. 1A) direction of the artificial tooth root 4. It may be formed in a stepped shape toward the front. Further, in FIG. 1A, FIG. 1B, and FIG.
- the stepped portion 52 is formed such that the boundary between the support base end 5P of the support 5 and the stepped portion 52 is formed in an edge shape.
- a rising portion (not shown) having a predetermined height can be provided in the vertical direction (upward in FIG. 2) from the outer periphery of the base end 5P, and the stepped portion 52 can be formed from the upper end of the rising portion.
- the “stepped portion” includes a portion in which such a rising portion is provided in the middle of the tapered stepped portion 52 or a combination of the tapered stepped portion 52 and the stepped stepped portion 52.
- the ratio of the height L2 (see FIG. 2) of the stepped portion 52 to the length L1 in the radial direction of the stepped portion 52 (see FIG. 2), that is, L1 / L2 is not particularly limited.
- the angle ⁇ (see FIG. 2) formed by the base end 5P of the abutment 5 and the stepped portion 52 is not particularly limited as long as it is in the range of 0 ° ⁇ ⁇ 90 °.
- 0 ⁇ L1 / L2 ⁇ 1 (angle ⁇ (see FIG. 2) is 0 ° ⁇ ⁇ 45 °).
- the number of steps of the stepped stepped portion 52, the width per step, and the height are not particularly limited.
- the length L3 of the tapered stepped portion 52 is not particularly limited, but in order to efficiently capture the substance that promotes bacterial growth at the stepped portion 52, It is preferable that 0.1 ⁇ L3 ⁇ 5.0 (mm).
- the substantially cylindrical portion 54 is provided in the embodiment shown in FIGS. 1 to 4, it is not always necessary to provide the substantially cylindrical portion 54.
- the length of the stepped portion 52, the stepped portion 52 and the abutment are not necessarily provided. Depending on the relationship with the outer diameter of 5, the substantially cylindrical portion 54 may not be provided.
- the stepped portion 52 preferably has a tapered shape with a reduced diameter as the distance from the abutment base end 5 ⁇ / b> P of the covering portion 51, and is a tapered stepped portion 52 with a smooth surface.
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- Health & Medical Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Dentistry (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Dental Prosthetics (AREA)
- Dental Preparations (AREA)
Abstract
Description
2 人工歯根本体
21 先端部
22 基端部
23 係合孔
3 誘導部
4 人工歯根
5 支台
51 覆設部
52 段差部
53 支台側係合部
54 略円筒状の部分
5D 支台先端
5P 支台基端
6 歯冠
7 骨細胞誘導層
T ネジ
Claims (5)
- 先端部及び基端部を有し、少なくとも先端部側にネジが形成された人工歯根本体と、前記人工歯根本体の基端部における外周に設けられ、軟組織を誘導する誘導部とを含む人工歯根と、
前記人工歯根に取り付けられ、前記誘導部の基端部側の全面を覆う覆設部を支台基端側に有する支台とを備え、
前記支台は、前記覆設部より前記支台の先端側に、外周に沿って、段差部が設けられたことを特徴とするインプラント構造体。 - 前記段差部が、前記覆設部の支台基端から離れるにしたがって縮径するテーパ状であることを特徴とする請求項1に記載のインプラント構造体。
- 前記覆設部の外周が、前記誘導部の外周に沿うように形成されてなることを特徴とする請求項1又は2に記載のインプラント構造体。
- 前記支台に歯冠が固定されてなることを特徴とする請求項1~3のいずれかに記載のインプラント構造体。
- 前記誘導部が、径が5~100μmの生体親和性の高い繊維を絡合して、空隙率10~90%とした三次元構造を有する請求項1~4のいずれかに記載のインプラント構造体。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112012004270.0T DE112012004270T5 (de) | 2011-10-13 | 2012-10-15 | Implantat-Struktur |
US14/351,708 US9814545B2 (en) | 2011-10-13 | 2012-10-15 | Implant structure |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011226008A JP2013085577A (ja) | 2011-10-13 | 2011-10-13 | インプラント構造体 |
JP2011-226008 | 2011-10-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013054935A1 true WO2013054935A1 (ja) | 2013-04-18 |
Family
ID=48081979
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2012/076622 WO2013054935A1 (ja) | 2011-10-13 | 2012-10-15 | インプラント構造体 |
Country Status (4)
Country | Link |
---|---|
US (1) | US9814545B2 (ja) |
JP (1) | JP2013085577A (ja) |
DE (1) | DE112012004270T5 (ja) |
WO (1) | WO2013054935A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016000151A (ja) * | 2014-06-12 | 2016-01-07 | 富士フィルター工業株式会社 | 歯科用アバットメント及び製造方法 |
US20220160472A1 (en) * | 2019-02-28 | 2022-05-26 | Indian Institute Of Science | A dental implant assembly |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101719402B1 (ko) * | 2014-12-15 | 2017-03-23 | 장재우 | 치과 임플란트 유닛 및 그 제조 방법 |
IL258392A (en) * | 2018-03-27 | 2018-05-31 | Datum Dental Ltd | A block of defined shape containing collagen |
WO2019184474A1 (zh) * | 2018-03-27 | 2019-10-03 | 北京莱顿生物材料有限公司 | 一种口腔种植体及口腔种植体组件 |
CN108403235B (zh) * | 2018-03-27 | 2020-05-15 | 北京莱顿生物材料有限公司 | 一种口腔种植体及口腔种植体组件 |
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- 2012-10-15 DE DE112012004270.0T patent/DE112012004270T5/de not_active Withdrawn
- 2012-10-15 WO PCT/JP2012/076622 patent/WO2013054935A1/ja active Application Filing
- 2012-10-15 US US14/351,708 patent/US9814545B2/en not_active Expired - Fee Related
Patent Citations (6)
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JPS60207659A (ja) * | 1984-03-31 | 1985-10-19 | 保坂 尚紀 | 歯肉結合組織と線維性付着を成立させうる人工歯根 |
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JP2016000151A (ja) * | 2014-06-12 | 2016-01-07 | 富士フィルター工業株式会社 | 歯科用アバットメント及び製造方法 |
US20220160472A1 (en) * | 2019-02-28 | 2022-05-26 | Indian Institute Of Science | A dental implant assembly |
Also Published As
Publication number | Publication date |
---|---|
DE112012004270T5 (de) | 2014-07-10 |
JP2013085577A (ja) | 2013-05-13 |
US20140315151A1 (en) | 2014-10-23 |
US9814545B2 (en) | 2017-11-14 |
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