JPH0723982A - Tissue induction regeneration method and strut for use therein - Google Patents

Tissue induction regeneration method and strut for use therein

Info

Publication number
JPH0723982A
JPH0723982A JP5194116A JP19411693A JPH0723982A JP H0723982 A JPH0723982 A JP H0723982A JP 5194116 A JP5194116 A JP 5194116A JP 19411693 A JP19411693 A JP 19411693A JP H0723982 A JPH0723982 A JP H0723982A
Authority
JP
Japan
Prior art keywords
membrane
bone
tissue
strut
regeneration method
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP5194116A
Other languages
Japanese (ja)
Inventor
Masahiko Isogai
昌彦 磯貝
Masaaki Hattori
昌晃 服部
Takenori Sawamura
武憲 澤村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Niterra Co Ltd
Original Assignee
NGK Spark Plug Co Ltd
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 NGK Spark Plug Co Ltd filed Critical NGK Spark Plug Co Ltd
Priority to JP5194116A priority Critical patent/JPH0723982A/en
Publication of JPH0723982A publication Critical patent/JPH0723982A/en
Pending legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61CDENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0003Not used, see subgroups
    • A61C8/0004Consolidating natural teeth
    • A61C8/0006Periodontal tissue or bone regeneration

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Developmental Biology & Embryology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dental Prosthetics (AREA)

Abstract

PURPOSE:To stably hold an osseous tissue covered with a membrane during tissue induction regeneration method and to enable normal ossification. CONSTITUTION:A rod-shaped implant 11 is fitted and implanted into the hole 10a of an alveolar bone 10 which has become defective through periodontal disease. Next, at least one rod-shaped strut 12 made from apatite hydroxide is implanted in the alveolar bone with its end embedded. A bone filler 13 made from granular HAP is set in the defective part of the bone around the implant. A membrane 14 is provided to cover the alveolar bone and the implant, with the bone filler 13 filling between them. The strut 15 penetrates the membrane and is secured to the alveolar bone to hold the membrane. Since the membrane is supported by the strut, it will not sink and its outer shape is not easy to deform. Deformation of the bone filler covered with the membrane is therefore prevented and normal new bone formation is promoted, allowing quick morphogenesis and healing of the alveolar bone.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、骨欠損部に新生骨を形
成する組織誘導再生法に係り、特に歯科,口腔外科,整
形外科等の分野において利用される組織誘導再生法の改
良に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tissue-guided regeneration method for forming new bone in a bone defect, and more particularly to improvement of a tissue-guided regeneration method used in the fields of dentistry, oral surgery, orthopedics and the like.

【0002】[0002]

【従来の技術】例えば、歯根へのインプラント植立にお
いては、植立部分に十分な骨量が再生することが望まれ
るが、インプラント周囲の骨欠損部分には手術後に十分
な骨新生が生じないことが多く、これを解決するために
組織誘導再生法(GTR法)が用いられてきた。従来、
歯根周囲の骨欠損腔に対する組織誘導再生法は、例えば
日口腔インプラント誌第4巻第2号(p136ー274
〜138ー276)、同誌第5巻第1号(p152ー1
52〜153ー153)に示されているように、歯周疾
患により欠損の生じた部位やチタンインプラントを植立
した部位の周囲に金属製支柱を立て、これらに生体に不
活性な半透過性のPTFE膜(商標名ゴアテックス)を
被せる方法が用いられていた。また、新生骨の早期生成
のために、上記骨欠損腔に骨補填材を充填したのち同時
に膜を被せることも試みられていた。
2. Description of the Related Art For example, in implant implantation in a tooth root, it is desired that a sufficient amount of bone is regenerated in the implanted portion, but sufficient bone formation does not occur after surgery in the bone defect portion around the implant. In many cases, the tissue-guided regeneration method (GTR method) has been used to solve this. Conventionally,
A tissue-guided regeneration method for a bone defect cavity around a tooth root is described in, for example, Journal of Oral Implantology Vol. 4, No. 2 (p136-274).
~ 138-276), Vol. 5, No. 1 (p. 152-1)
52-153-153), metal struts are erected around the site where the defect was caused by periodontal disease or the site where the titanium implant was implanted. The method of covering with a PTFE membrane (trade name: GORE-TEX) was used. In addition, for early generation of new bone, it has also been attempted to fill the above-mentioned bone defect cavity with a bone filling material and simultaneously cover it with a membrane.

【0003】[0003]

【発明が解決しようとする課題】しかし、上記方法にお
いては、金属支柱を適当な時期に手術によって摘出する
必要があり煩雑である。また、充填した骨補填材は、固
定されておらず不安定なために、形態が保持されず凹ん
だり偏ったりして膜と共に変形することもある。そのた
め、正常な形態の骨形成が阻害され、速やかな形態形成
や治癒がなされないという問題がある。本発明は、上記
問題点を解決しようとするものであり、膜によって被覆
された新生骨生成のスペースを確保し、正常な形態の骨
形成を可能にすると共に摘出のための2次手術を必要と
しない組織誘導再生法及びこれに用いる支柱を提供する
ことを目的とする。
However, the above method is complicated because it is necessary to extract the metal column by an operation at an appropriate time. Further, since the filled bone substitute material is not fixed and unstable, the shape may not be retained and may be dented or biased and deformed together with the membrane. Therefore, there is a problem that normal morphology of bone formation is inhibited and rapid morphogenesis and healing are not performed. The present invention is intended to solve the above-mentioned problems, and secures a space for new bone formation covered with a membrane, enables normal bone formation, and requires secondary surgery for extraction. It is an object of the present invention to provide a tissue-guided regeneration method and a support used therefor.

【0004】[0004]

【課題を解決するための手段】上記目的を達成するため
に、上記請求項1に係る発明の構成上の特徴は、骨組織
部を所定の膜で被覆する組織誘導再生法において、新生
骨と置換可能な材料により形成され、一端にて骨組織部
に固定され他端にて前記膜の内側面に当接して同膜を支
持する支柱及び同膜を貫通して一端にて骨組織部に固定
され他端にて同膜に係合して同膜を支持する支柱の少な
くとも一方を設けたことにある。
In order to achieve the above object, the structural feature of the invention according to claim 1 is that in a tissue guided regeneration method in which a bone tissue portion is covered with a predetermined membrane, A pillar formed of a replaceable material, fixed to the bone tissue portion at one end and abutting the inner surface of the membrane at the other end to support the membrane, and penetrating through the membrane to the bone tissue portion at one end At least one of the pillars that is fixed and engages with the membrane at the other end to support the membrane is provided.

【0005】また、上記請求項2に係る発明の構成上の
特徴は、前記請求項1に記載の組織誘導再生法に用いる
支柱であって、前記支柱が、水酸アパタイト(HA
P)、リン酸三カルシウム(βーTCP)、又は、これ
らの複合材料により形成されてなることにある。これら
支柱を構成する新生骨と置換可能な材料として、特に、
骨置換性の速さの点で、リン酸三カルシウムを主成分と
するものがより好ましい。
[0005] The structural feature of the invention according to claim 2 is the strut used in the tissue-induced regeneration method according to claim 1, wherein the strut is hydroxyapatite (HA).
P), tricalcium phosphate (β-TCP), or a composite material thereof. As materials that can replace the new bones that make up these columns,
From the viewpoint of speed of bone replacement, a material containing tricalcium phosphate as a main component is more preferable.

【0006】[0006]

【発明の作用・効果】上記のように構成した請求項1に
係る発明においては、骨欠損部を膜によって被覆し、そ
の膜を貫通して骨組織部に固定し先端が膜に係合した支
柱によって又は先端が同膜の内側面に当接した状態で骨
組織部に固定した支柱の少なくともいずれかによって支
持するようにした。このため、必要な細胞のみが選択的
に誘導されると共に、膜の沈下及び膜に被覆された骨補
填材の変形が防止され所望の形状に保たれるので、正常
な新生骨の形成が促進され、速やかな骨組織の形成や治
癒がなされる。
In the invention according to claim 1 configured as described above, the bone defect portion is covered with a membrane, penetrates the membrane and is fixed to the bone tissue portion, and the tip is engaged with the membrane. It is supported by a pillar or at least one of pillars fixed to the bone tissue portion with the tip abutting the inner surface of the same membrane. Therefore, only necessary cells are selectively induced, and the subsidence of the membrane and the deformation of the bone substitute material coated on the membrane are prevented and the desired shape is maintained, which promotes the formation of normal new bone. As a result, rapid bone tissue formation and healing are achieved.

【0007】また、支柱を新生骨と置換可能な材料によ
り形成したことにより、支柱は骨形成の進行を促進し、
膜の剥離後も、暫くは上皮の圧力に耐え、その後徐々に
骨組織部に吸収されて新生骨と置換される。すなわち、
新生骨形成後に支柱を摘出する必要がなく治療を簡略化
することができる。
[0007] Further, since the pillar is made of a material that can replace the new bone, the pillar supports the progress of bone formation,
Even after the membrane is peeled off, it withstands the pressure of the epithelium for a while, and then is gradually absorbed by the bone tissue and replaced with new bone. That is,
The treatment can be simplified without the need to remove the struts after new bone formation.

【0008】[0008]

【実施例】以下、本発明の一実施例を図面により説明す
る。図1は、本発明に係る組織誘導再生法をインプラン
ト植立に適用した状態を断面図により概略的に示したも
のである。まず、歯周疾患により骨欠損を生じた歯槽骨
10の窩(抜歯窩等)10aに棒状のインプラント(人
工歯根)11を嵌合して植立する。インプラント11
は、アルミナ等のセラミックスまたはチタン金属もしく
はそれらの複合体によって形成されている。次に、歯槽
骨10に少なくとも1本の棒状の支柱12(直径φ2m
m×長さ5〜10mml)をその先端を埋め込むことに
より立設する。支柱12は、図2(a)に示すように、
一端に直径4mmの半球状の頭部12aを有する釘形状
であって、水酸アパタイト(HAP)、リン酸三カルシ
ウム(βーTCP)等の材料によって形成されている。
支柱12の他の実施例としては、その他、図2(b)に
示すような棒状であってもよく、また図2(c)に示す
ようにねじ形状のもの、図2(d)に示す釘形状の一端
が細くなったもの等を用いることもできる。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view schematically showing a state in which the tissue-guided regeneration method according to the present invention is applied to implant implantation. First, a rod-shaped implant (artificial tooth root) 11 is fitted and implanted in a fossa (extraction fossa, etc.) 10a of an alveolar bone 10 in which a bone defect has occurred due to periodontal disease. Implant 11
Is formed of ceramics such as alumina or titanium metal or a composite thereof. Next, at least one rod-shaped column 12 (diameter φ2 m) is attached to the alveolar bone 10.
(m x length 5-10 mml) is erected by embedding the tip thereof. The pillar 12 is, as shown in FIG.
It has a nail shape having a hemispherical head 12a with a diameter of 4 mm at one end, and is made of a material such as hydroxyapatite (HAP) or tricalcium phosphate (β-TCP).
Other examples of the column 12 may be rod-shaped as shown in FIG. 2 (b), screw-shaped as shown in FIG. 2 (c), or shown in FIG. 2 (d). It is also possible to use a nail-shaped member having one end narrowed.

【0009】次に、インプラント11の周囲の骨欠損部
に顆粒状の骨補填材13を配置させる。骨補填材13
は、バイオアクフィブな例えばHAP等である。そし
て、骨補填材13が間に充填された状態で、生体に不活
性なPTFE膜14が歯槽骨10,インプラント11の
下部を被覆して設けられる。これにより、膜14は、内
側面が支柱12によって支持された状態になる。さら
に、別の支柱15をこの膜14を貫通して歯槽骨10に
固定すると共に支柱15の頭部15aによって膜14を
挟持する。その結果、膜14は、自身を貫通した支柱1
5及びその内側面に接触して設けた支柱12によって支
持されるので、沈下したりその外形が容易に変形するこ
とはない。このため、膜14に被覆された骨補填材13
の変形が防止され、骨欠損部に正常な形状の新生骨の形
成が促進され、歯槽骨10の速やかな形態形成や治癒が
なされる。
Next, a granular bone filling material 13 is placed on the bone defect portion around the implant 11. Bone substitute material 13
Is bioactive, such as HAP. Then, in a state where the bone filling material 13 is filled in between, a PTFE film 14 which is inactive to the living body is provided to cover the lower parts of the alveolar bone 10 and the implant 11. As a result, the inner surface of the membrane 14 is supported by the columns 12. Further, another pillar 15 penetrates the membrane 14 and is fixed to the alveolar bone 10, and the head 14 a of the pillar 15 holds the membrane 14. As a result, the membrane 14 has the struts 1 extending through it.
Since it is supported by the column 5 and the column 12 provided in contact with the inner surface thereof, it does not sink or its outer shape is easily deformed. Therefore, the bone filling material 13 covered with the membrane 14
Of the alveolar bone 10 is prevented, the formation of new bone having a normal shape is promoted in the bone defect portion, and the alveolar bone 10 is promptly formed and healed.

【0010】また、支柱12,15は、水酸アパタイト
(HAP)等の生体親和性の良い材料により形成されて
いるので、骨形成の進行を促進すると共に、膜14の剥
離後も、暫くは上皮の圧力に耐え、その後徐々に吸収さ
れて新生骨と置換される。このため、新生骨形成後に支
柱を摘出する必要がなく治療を簡略化することができ
る。
Further, since the columns 12 and 15 are formed of a material having a high biocompatibility such as hydroxyapatite (HAP), the columns 12 and 15 accelerate the progress of bone formation and, even after the film 14 is peeled off, the columns 12 and 15 are not used for a while. It withstands epithelial pressure and is then slowly absorbed and replaced by new bone. For this reason, it is not necessary to remove the support after forming new bone, and the treatment can be simplified.

【0011】なお、上記実施例においては、膜を貫通し
一端を膜に係合させた支柱及び膜の内側面に接触して設
けた支柱によって膜を支持しているが、膜を貫通し一端
を膜に係合させた支柱のみにより又は膜の内側面に接触
して設けた支柱のみによって膜を支持するようにしても
よい。また、上記実施例においては、骨補填材を充填し
ているが、必ずしもこれを必要とするものではなく、新
生骨の形成スペースが確保されるように支柱を配置する
ことで、所望の形状の新生骨を形成することができる。
さらに、上記実施例においては、膜として生体に不活性
な例えばPTFE膜を用いているが、生体内吸収性の半
透過性膜例えばポリ乳酸膜等を用いることも可能であ
る。これにより、膜の除去手術が不要になる効果が得ら
れる。また、上記実施例においては、組織誘導再生法を
歯槽骨へのインプラント植立に適用した場合について説
明しているが、これに限らず、人体あるいは他の動物の
骨組織の欠損部分の再生に本発明を適用することが可能
である。
In the above-mentioned embodiment, the membrane is supported by the support column which penetrates the membrane and has one end engaged with the membrane and the support column which is provided in contact with the inner side surface of the membrane. The membrane may be supported only by the struts engaged with the membrane or only by the struts provided in contact with the inner surface of the membrane. Further, in the above-mentioned embodiment, the bone filling material is filled, but it is not always necessary. By arranging the columns so as to secure the formation space for new bone, a desired shape can be obtained. Can form new bone.
Furthermore, in the above-mentioned embodiment, a bio-inert, for example, PTFE membrane is used as the membrane, but a bioabsorbable semi-permeable membrane such as a polylactic acid membrane can also be used. This has the effect of eliminating the need for membrane removal surgery. Further, in the above examples, the case of applying the tissue-guided regeneration method to implant implantation in the alveolar bone is described, but not limited to this, for regeneration of a defective portion of the bone tissue of the human body or other animals. The present invention can be applied.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の一実施例に係る歯槽骨の組織誘導再生
法を示す概略断面図である。
FIG. 1 is a schematic cross-sectional view showing a tissue-guided regeneration method of alveolar bone according to an embodiment of the present invention.

【図2】支柱の種々の例を示す断面図である。FIG. 2 is a cross-sectional view showing various examples of columns.

【符号の説明】[Explanation of symbols]

10;歯槽骨、11;インプラント、12,15;支
柱、13;骨補填材、14;膜。
10; Alveolar bone, 11; Implant, 12, 15; Strut, 13; Bone substitute material, 14; Membrane.

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 骨組織部を所定の膜で被覆する組織誘導
再生法において、 新生骨と置換可能な材料により形成され、一端にて骨組
織部に固定され他端にて前記膜の内側面に当接して同膜
を支持する支柱及び同膜を貫通して一端にて骨組織部に
固定され他端にて同膜に係合して同膜を支持する支柱の
少なくとも一方を設けたことを特徴とする組織誘導再生
法。
1. A tissue-guided regeneration method for covering a bone tissue portion with a predetermined membrane, which is formed of a material capable of replacing new bone, is fixed to the bone tissue portion at one end, and is an inner surface of the membrane at the other end. At least one of a pillar that abuts against the membrane to support the same membrane and a pillar that penetrates the membrane and is fixed to the bone tissue portion at one end and engages with the membrane at the other end to support the same membrane. A tissue-guided regeneration method characterized by:
【請求項2】 前記請求項1に記載の組織誘導再生法に
用いる支柱であって、前記支柱が、水酸アパタイト(H
AP)、リン酸三カルシウム(βーTCP)、又は、こ
れらの複合材料により形成されてなることを特徴とする
組織誘導再生法に用いる支柱。
2. A pillar used in the tissue-induced regeneration method according to claim 1, wherein the pillar is hydroxyapatite (H).
AP), tricalcium phosphate (β-TCP), or a composite material thereof, used for a tissue-induced regeneration method.
JP5194116A 1993-07-09 1993-07-09 Tissue induction regeneration method and strut for use therein Pending JPH0723982A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5194116A JPH0723982A (en) 1993-07-09 1993-07-09 Tissue induction regeneration method and strut for use therein

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5194116A JPH0723982A (en) 1993-07-09 1993-07-09 Tissue induction regeneration method and strut for use therein

Publications (1)

Publication Number Publication Date
JPH0723982A true JPH0723982A (en) 1995-01-27

Family

ID=16319190

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5194116A Pending JPH0723982A (en) 1993-07-09 1993-07-09 Tissue induction regeneration method and strut for use therein

Country Status (1)

Country Link
JP (1) JPH0723982A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002224141A (en) * 2001-01-31 2002-08-13 Kyocera Corp Bone restorer
KR100372259B1 (en) * 2000-08-17 2003-02-17 이동환 Intensification device of alveolar bone
WO2005105164A1 (en) * 2004-04-30 2005-11-10 Sunstar Suisse Sa Biocompatible membrane and process for producing the same
KR101141306B1 (en) * 2008-04-24 2012-05-04 물티테스트 엘렉트로니쉐 지스테메 게엠베하 Plunger with a quick locking system
KR101301694B1 (en) * 2012-02-28 2013-08-30 오스템임플란트 주식회사 Abutment for fixing dental membrane
JP2015506190A (en) * 2011-12-23 2015-03-02 オステムインプラント カンパニー リミテッド Dental membrane

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100372259B1 (en) * 2000-08-17 2003-02-17 이동환 Intensification device of alveolar bone
JP2002224141A (en) * 2001-01-31 2002-08-13 Kyocera Corp Bone restorer
JP4698033B2 (en) * 2001-01-31 2011-06-08 京セラ株式会社 Bone repair device
WO2005105164A1 (en) * 2004-04-30 2005-11-10 Sunstar Suisse Sa Biocompatible membrane and process for producing the same
JPWO2005105164A1 (en) * 2004-04-30 2008-03-13 サンスター スイス エスエー Biocompatible membrane and method for producing the same
JP5008396B2 (en) * 2004-04-30 2012-08-22 サンスター スイス エスエー Biocompatible membrane and method for producing the same
KR101141306B1 (en) * 2008-04-24 2012-05-04 물티테스트 엘렉트로니쉐 지스테메 게엠베하 Plunger with a quick locking system
JP2015506190A (en) * 2011-12-23 2015-03-02 オステムインプラント カンパニー リミテッド Dental membrane
US10105198B2 (en) 2011-12-23 2018-10-23 Osstemimplant Co., Ltd. Dental membrane
KR101301694B1 (en) * 2012-02-28 2013-08-30 오스템임플란트 주식회사 Abutment for fixing dental membrane

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