JP2010284248A - Guided bone regeneration auxiliary device for implant - Google Patents

Guided bone regeneration auxiliary device for implant Download PDF

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JP2010284248A
JP2010284248A JP2009138989A JP2009138989A JP2010284248A JP 2010284248 A JP2010284248 A JP 2010284248A JP 2009138989 A JP2009138989 A JP 2009138989A JP 2009138989 A JP2009138989 A JP 2009138989A JP 2010284248 A JP2010284248 A JP 2010284248A
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bone
plate
implant
regeneration
peripheral surface
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JP5525189B2 (en
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Toshiyuki Mizuguchi
稔之 水口
Isao Kamikura
▲功▼ 神蔵
Hideyuki Fukuda
秀幸 福田
Shinichi Matsumoto
伸一 松本
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PLATON JAPAN KK
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a configuration of a guided bone regeneration auxiliary device for implant which stably forms a new bone and improves work efficiency in guided bone regeneration performed in the case of tooth regeneration when a tooth is lost. <P>SOLUTION: The guided bone regeneration auxiliary device 11 for implant comprises a connection member 12 and a plate 13. The connection member 12 is connected and fixed to an opening part 20 formed at one end part of a dental implant 4 in such a state as closing the opening part 20. The plate 13 is provided at one end part of the connection member 12 and projects a part or whole of an outer peripheral surface in the radial direction outward in the radial direction from an outer peripheral surface of the dental implant 4. In the state that the other end part of the dental implant 4 is buried in the jaw bone, the plate 13 stably secures a space where guided bone regeneration is performed by the guided bone regeneration auxiliary device 11 for implant for closing a part of the opening part of a space surrounded by the outer peripheral surface of the dental implant and a peripheral surface of the jaw bone. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

この発明は、歯牙のう蝕、歯周病、歯列矯正、または治療のための抜歯などにより欠損した歯牙を再生する歯牙再生術において、骨吸収などにより生じた顎骨の骨高さの不足を補うための骨誘導再生術を安定して行うためのインプラント用骨誘導再生補助具に関する。   The present invention relates to a lack of bone height in the jawbone caused by bone resorption or the like in tooth regeneration that regenerates a tooth that has been lost due to dental caries, periodontal disease, orthodontics, or tooth extraction for treatment. The present invention relates to an implantable bone guided regeneration assisting device for stably performing a guided bone guided regeneration technique.

歯牙再生術は、図６に示すように、舌側顎骨１と頬側顎骨２の中間付近に人工歯根床３を形成し、該人工歯根床３に人工歯根（インプラント）４のネジ部５を埋入する。この際、天然歯を抜歯した後の抜歯孔６の影響で、舌側顎骨１の骨高さと、頬側顎骨２の骨高さとが揃わない場合の骨組織修復方法として、従来から骨誘導再生術（ＧＢＲ法：Guided Bone Regeneration）が用いられている。   As shown in FIG. 6, the tooth regenerative operation forms an artificial root bed 3 near the middle of the lingual jawbone 1 and the buccal jawbone 2, and a screw portion 5 of an artificial tooth root (implant) 4 is formed on the artificial root bed 3. Embed. At this time, as a bone tissue repair method in the case where the bone height of the lingual jawbone 1 and the bone height of the buccal jawbone 2 are not aligned due to the influence of the extraction hole 6 after extracting the natural tooth, bone guide regeneration is conventionally performed. The technique (GBR method: Guided Bone Regeneration) is used.

骨誘導再生術では、前記抜歯孔６内に、例えば、自家骨や人工骨などからなる骨補填材７を填入し、該骨補填材７を填入した抜歯孔６を、シート固定ピン９により前記舌側顎骨１および頬側顎骨２に固定した骨誘導再生シート８で封鎖し、該抜歯孔６内に骨形成を阻害する軟組織が進入することを防止している。このようにして、前記骨補填材７の新生骨への置換が促進されるようになっている。   In the bone regenerative surgery, the tooth extraction hole 6 is filled with a bone filling material 7 made of, for example, autologous bone or artificial bone, and the tooth extraction hole 6 filled with the bone filling material 7 is inserted into the sheet fixing pin 9. Thus, the bone guide regeneration sheet 8 fixed to the lingual jawbone 1 and the buccal jawbone 2 is sealed to prevent the soft tissue that inhibits bone formation from entering the extraction hole 6. In this way, the replacement of the bone grafting material 7 with new bone is promoted.

従来の骨誘導再生術の場合、前記骨誘導再生シート８およびシート固定ピン９の取付け作業には、手間がかかり、高度な技術が必要となる。また、前記抜歯孔６内に新生骨が形成される間に、骨誘導再生シート８に荷重が加わると、該抜歯孔６内の骨補填材７の形状を安定して維持することが困難になる。さらに、前記抜歯孔６内に新生骨が形成された後、骨誘導再生シート８およびシート固定ピン９を除去する作業は、骨誘導再生シート８の周面に形成された歯肉１０を各シート固定ピン９の位置まで切開して広げなければならず、手間のかかる作業が必要となる。   In the case of the conventional osteoinductive regeneration technique, the operation of attaching the osteoinductive regeneration sheet 8 and the sheet fixing pin 9 takes time and requires advanced techniques. In addition, if a load is applied to the osteoinductive regeneration sheet 8 while new bone is formed in the extraction hole 6, it is difficult to stably maintain the shape of the bone filling material 7 in the extraction hole 6. Become. Further, after the new bone is formed in the tooth extraction hole 6, the operation of removing the bone induction regenerating sheet 8 and the sheet fixing pin 9 is performed by fixing the gingiva 10 formed on the peripheral surface of the bone induction regenerating sheet 8 to each sheet. The pin 9 must be incised and widened, requiring laborious work.

これに対して、特許文献１には、骨補填材を填入した抜歯孔を覆う骨誘導再生シートおよびシート固定ピンを、新生骨と置換可能な材料（ハイドロキシアパタイト、リン酸三カルシウムなど）により形成する技術が記載されている。ただし、この特許文献１に記載された技術でも、誘導再生シートに荷重が加わった場合に、前記骨補填材の形状を安定して維持することは困難であると考えられる。   On the other hand, in Patent Document 1, the osteoinductive regenerative sheet and the sheet fixing pin that cover the extraction hole filled with the bone filling material are replaced with new bone by a material (such as hydroxyapatite or tricalcium phosphate). The forming technique is described. However, even with the technique described in Patent Document 1, it is considered that it is difficult to stably maintain the shape of the bone prosthetic material when a load is applied to the guide regeneration sheet.

特開平７-２３９８２公報JP-A-7-23982

本発明は、骨誘導再生術において、安定した新生骨の形成、および作業効率の向上を図ることができる、インプラント用骨誘導再生補助具の構造を実現することを目的とする。   An object of the present invention is to realize a structure of an implantable bone guidance / regeneration assisting tool capable of forming stable new bone and improving working efficiency in bone guidance / regeneration.

本発明のインプラント用骨誘導再生補助具は、プレートと、該プレートを骨に埋入されているインプラントの一端部に形成された開口部に結合固定するための結合部材とからなる。   The bone guidance / regeneration assisting tool for implants of the present invention comprises a plate and a coupling member for coupling and fixing the plate to an opening formed at one end of an implant embedded in bone.

特に、本発明では、前記プレートは、前記結合部材の一端側に接続されており、該プレートは、径方向の外端縁の一部または全部が前記インプラントの外周面よりも径方向外方へ突出するように形状および大きさが定められており、前記結合部材が前記インプラントの前記開口部に螺合固定された状態で、前記プレートが、該インプラントと前記骨とにより囲まれる空間の開口の一部を塞ぐことが可能となっていることを特徴とする。   Particularly, in the present invention, the plate is connected to one end side of the coupling member, and the plate has a part or all of the radial outer end edge radially outward from the outer peripheral surface of the implant. Shaped and sized so as to protrude, and in a state where the coupling member is screwed and fixed to the opening of the implant, the plate has an opening in a space surrounded by the implant and the bone. It is possible to block a part.

前記プレートは、前記結合部材と一体に形成されてもよく、前記結合部材とは別体に設けられていてもよい。   The plate may be formed integrally with the coupling member, or may be provided separately from the coupling member.

前記プレートの、前記結合部材の前記一端部側にある周面が、凸状曲面を有することが好ましい。   It is preferable that a peripheral surface of the plate on the one end side of the coupling member has a convex curved surface.

また、生体親和性の観点から、前記プレートに、該プレートを貫通する通孔が設けられていることが好ましい。   From the viewpoint of biocompatibility, the plate is preferably provided with a through hole penetrating the plate.

なお、本発明は、前記インプラントが人工歯根である場合に好適に適用されるが、その他、整形外科などの分野におけるインプラントを用いた骨誘導再生術にも適用可能である。   In addition, although this invention is applied suitably when the said implant is an artificial tooth root, it is applicable also to the osteoinductive regeneration using the implant in field | areas, such as orthopedics.

上述のように構成する、本発明のインプラント用骨誘導再生補助具の場合、顎骨への人工歯根（インプラント）の埋入後に骨誘導再生術を施す際に、高度な技術が要求される骨誘導再生シートおよびシート固定ピンの取付け作業が不要となるため、作業効率の向上が図られるとともに、作業手順の減少により、治療期間の短縮も図ることができる。   In the case of the bone guidance / regeneration assisting tool for implants according to the present invention configured as described above, a high level of technology is required when performing bone guidance / regeneration after implanting an artificial tooth root (implant) in the jawbone. Since the work of attaching the recycled sheet and the sheet fixing pin is not required, the work efficiency can be improved and the treatment period can be shortened by reducing the work procedure.

また、インプラント用骨誘導再生補助具を構成するプレートは、骨誘導再生シートと比較して剛性が高いため、該プレートに荷重が加わった場合にも、抜歯孔内の補填材の形状を安定して維持することができ、延いては、該プレートの周面に形成される歯肉の形状の安定化を図ることもできる。   In addition, since the plate constituting the bone guidance / regeneration assisting tool for implants has higher rigidity than the bone guidance / regeneration sheet, the shape of the filling material in the extraction hole is stabilized even when a load is applied to the plate. In other words, the shape of the gingiva formed on the peripheral surface of the plate can be stabilized.

また、抜歯孔内に新生骨が形成された後に、プレートを除去する作業は、該プレートの周面にある歯肉だけを切開するだけで行うことができる。このため、従来と比較して切開する範囲を狭くし、作業時間の短縮、作業の簡易化を図ることができる。   In addition, after the new bone is formed in the extraction hole, the operation of removing the plate can be performed by incising only the gingiva on the peripheral surface of the plate. For this reason, compared with the past, the incision range can be narrowed, the working time can be shortened, and the work can be simplified.

さらに、本発明のインプラント用骨誘導再生補助具の場合には、人工歯根を顎骨に埋入する作業と、骨欠損部に対する骨誘導再生術とを、一度の治療で行うことができる。このため、骨誘導再生術の完了後に、人工歯根を顎骨に埋入するような治療方法の場合と比較して、治療回数を減らすことが可能となり、治療時間の短縮、患者への肉体的、精神的な負担の軽減に寄与できる。   Furthermore, in the case of the bone-guided regeneration assisting device for implants according to the present invention, the operation of embedding the artificial tooth root in the jaw bone and the bone-guided regeneration operation for the bone defect part can be performed in one treatment. For this reason, it is possible to reduce the number of treatments compared to the treatment method in which an artificial dental root is embedded in the jawbone after completion of the bone guided regeneration operation, shortening the treatment time, physical to the patient, It can contribute to the reduction of mental burden.

本発明の実施の形態の第１例を示す、斜視図である。It is a perspective view which shows the 1st example of embodiment of this invention. 同じく、使用状態を説明するための図である。Similarly, it is a figure for demonstrating a use condition. 本発明の実施の形態の第２例を示す、斜視図である。It is a perspective view which shows the 2nd example of embodiment of this invention. 同じく、使用状態を説明するための図である。Similarly, it is a figure for demonstrating a use condition. 本発明の実施の形態の第３例を示す、斜視図である。It is a perspective view which shows the 3rd example of embodiment of this invention. 従来から行われている、骨誘導再生術を説明するための図である。It is a figure for demonstrating the bone guidance regeneration technique performed conventionally.

［実施の形態の第１例］
図１〜２に、本発明の実施の形態の第１例を示す。 [First example of embodiment]
1 and 2 show a first example of an embodiment of the present invention.

本発明の、インプラント用骨誘導再生補助具１１は、結合部材１２と、該結合部材１２の一端部（図１の上端側）に一体に形成されたプレート１３とからなる。   The bone guide / regeneration assisting tool 11 for implant of the present invention includes a connecting member 12 and a plate 13 integrally formed at one end of the connecting member 12 (upper end side in FIG. 1).

結合部材１２の基軸部２３の他端側（図１の下端側）外周面には、取付けネジ部１５が形成されている。また、結合部材１２の基軸部２３に対応する、プレート１３の外周面１４の径方向中心部には、取付け工具などにより回転トルクを伝達可能なトルク伝達部１６が形成されている。本例の場合、トルク伝達部１６として六角孔を設けている。このため、取付け工具として、六角レンチが使用される。なお、取付け工具には、例えば、プラスドライバ、マイナスドライバなどの回転トルクを付与できる各種取付け工具を使用可能であり、トルク伝達部１６には、これらの取付け工具の形状に合わせて各種構造を採用することができる。   A mounting screw portion 15 is formed on the outer peripheral surface of the other end side (the lower end side in FIG. 1) of the base shaft portion 23 of the coupling member 12. In addition, a torque transmission portion 16 capable of transmitting rotational torque with an attachment tool or the like is formed at the radial center portion of the outer peripheral surface 14 of the plate 13 corresponding to the base shaft portion 23 of the coupling member 12. In the case of this example, a hexagonal hole is provided as the torque transmitting portion 16. For this reason, a hexagon wrench is used as a mounting tool. As the mounting tool, for example, various mounting tools capable of applying a rotational torque such as a plus driver and a minus driver can be used, and various structures are adopted for the torque transmitting portion 16 according to the shape of these mounting tools. can do.

本実施形態では、プレート１３は円盤状であり、外周面１４（図１の上側周面）の形状は、緩やかな凸状曲面である。また、径方向外端部には、該プレート１３を貫通する状態で形成した複数の通孔１７が設けられている。なお、通孔１７の形状、個数は、図示の例に限定されるものではない。   In this embodiment, the plate 13 is disk-shaped, and the shape of the outer peripheral surface 14 (upper peripheral surface in FIG. 1) is a gently convex curved surface. In addition, a plurality of through holes 17 formed so as to penetrate the plate 13 are provided at the radially outer end. The shape and number of the through holes 17 are not limited to the illustrated example.

インプラント用骨誘導再生補助具１１の材質は、例えば、チタンまたはチタン合金などを採用することができるが、これらに限定されるものではなく、生体親和性を有する金属、非金属の各種材質を適宜選択し採用することができる。   For example, titanium or a titanium alloy can be used as the material of the bone guidance / regeneration assisting tool 11 for implants, but is not limited thereto, and various materials such as biocompatible metals and non-metals are appropriately used. Can be selected and adopted.

プレート１３の形状は、円盤状に限定されるものではない。例えば、楕円、多角形などの形状を採用することもできる。プレート１３の厚さは、任意の形状に作業者が曲げ加工することができる程度の厚さとし、例えば、０．３ｍｍ程度の厚さとすることが好ましい。   The shape of the plate 13 is not limited to a disk shape. For example, a shape such as an ellipse or a polygon can be employed. The thickness of the plate 13 is set to a thickness that allows an operator to bend the desired shape, and is preferably set to a thickness of, for example, about 0.3 mm.

プレート１３の大きさも、適用箇所に応じて種々の大きさを取りそろえておくことも可能であるが、所定の大きさよりも予め大きく形成しておき、作業時に、抜歯孔６ａ（図２参照）の大きさ、形状に合わせて、ハサミなどの工具により加工して使用するようにしてもよい。   The size of the plate 13 can also be prepared in various sizes according to the application location, but it is formed in advance larger than a predetermined size, and the tooth extraction hole 6a (see FIG. 2) is formed during operation. Depending on the size and shape, a tool such as scissors may be used for processing.

このような、インプラント用骨誘導再生補助具１１を使用する場合、まず、図２に示すように、顎骨１８の歯槽骨１９に形成した人工歯根床３に、人工歯根４のネジ部５を螺合して埋入する。   When using such an implant bone guide regeneration assisting tool 11, first, as shown in FIG. 2, the screw portion 5 of the artificial tooth root 4 is screwed onto the artificial tooth root bed 3 formed on the alveolar bone 19 of the jaw bone 18. Put together.

次に、六角レンチをトルク伝達部１６（図１参照）に嵌合し、取付けネジ部１５に回転トルクを伝達することで、取付けネジ部１５を、人工歯根４の一端部（図１の上端側）に設けた開口部２０の底部に形成されたネジ孔（図示省略）に螺合して結合固定する。このようにして、インプラント用骨誘導再生補助具１１を人工歯根４に結合固定した状態では、図１の（Ｂ）、および図２に示すように、該インプラント用骨誘導再生補助具１１は、人工歯根４の開口部２０を完全に塞いでおり、プレート１３の径方向外端縁は、人工歯根４の外周面よりも径方向外方へ突出するようになる。また、図２に示すように、インプラント用骨誘導再生補助具１１のプレート１３が、人工歯根４と顎骨１８の歯槽骨１９の周面とにより囲まれる空間である抜歯孔６ａの開口部の一部を塞いでいる。   Next, a hexagonal wrench is fitted to the torque transmission portion 16 (see FIG. 1), and rotational torque is transmitted to the mounting screw portion 15 so that the mounting screw portion 15 is connected to one end portion of the artificial tooth root 4 (the upper end in FIG. 1). And screwed into a screw hole (not shown) formed in the bottom of the opening 20 provided on the side). Thus, in a state where the bone guidance / regeneration assisting tool 11 for implants is coupled and fixed to the artificial tooth root 4, as shown in FIG. 1 (B) and FIG. The opening 20 of the artificial tooth root 4 is completely closed, and the radially outer edge of the plate 13 protrudes radially outward from the outer peripheral surface of the artificial tooth root 4. In addition, as shown in FIG. 2, the plate 13 of the implantable bone guidance / regeneration assisting tool 11 is a part of the opening of the extraction hole 6a, which is a space surrounded by the artificial root 4 and the peripheral surface of the alveolar bone 19 of the jawbone 18. The part is blocked.

抜歯孔６ａ内に、抜歯孔６ａの開口部のうちプレート１３により塞がれていない隙間部分２１から、例えば、自家骨、人工骨などからなる骨補填剤７を填入する。なお、人工骨材料としては、ハイドロキシアパタイト、リン酸三カルシウム、生体活性ガラスなどが挙げられる。そして、プレート１３の外周面および隙間部分２１を覆う状態で歯肉１０ａを形成する。   A bone filling material 7 made of, for example, autologous bone, artificial bone, or the like is inserted into the extraction hole 6a from the gap portion 21 that is not blocked by the plate 13 in the opening of the extraction hole 6a. Examples of the artificial bone material include hydroxyapatite, tricalcium phosphate, bioactive glass, and the like. And the gum 10a is formed in the state which covers the outer peripheral surface of the plate 13, and the clearance gap part 21. FIG.

なお、抜歯孔６ａ内に充填した骨補填材７が新生骨に置換された後には、歯肉１０ａを、プレート１３を取り出せる分だけ切開し、インプラント用骨誘導再生補助具１１を人工歯根４に結合固定する際の作業とは逆に、六角レンチを用いて、人工歯根４からインプラント用骨誘導再生補助具１１を取り外す。そして、人工歯根４の開口部２０に人工歯牙などの部材を取り付ける。   After the bone filling material 7 filled in the extraction hole 6a is replaced with new bone, the gingiva 10a is incised to the extent that the plate 13 can be taken out, and the bone guidance / regeneration assisting tool 11 for implanting is coupled to the artificial tooth root 4. Contrary to the operation at the time of fixation, the bone guidance / regeneration assisting tool 11 for implant is removed from the artificial tooth root 4 using a hexagon wrench. Then, a member such as an artificial tooth is attached to the opening 20 of the artificial tooth root 4.

上述したような本例のインプラント用骨誘導再生補助具１１の場合、顎骨１８の歯槽骨１９に人工歯根４を埋入した後に、安定した骨誘導再生術を施すことができる。すなわち、抜歯孔６ａの開口部の一部を前記プレート１３が塞いでいるため、抜歯孔６ａに充填した骨補填材７が新生骨へと置換されるまでの間、プレート１３に荷重が加わっても、プレート１３は、骨誘導再生シート８（図６参照）と比較して剛性が高いため、骨補填材７に荷重が加わり所望の形状から変形してしまうことを防止することができる。   In the case of the bone guidance / regeneration assisting tool 11 for an implant of this example as described above, a stable bone guidance / regeneration technique can be performed after the artificial dental root 4 is embedded in the alveolar bone 19 of the jawbone 18. That is, since the plate 13 blocks a part of the opening of the tooth extraction hole 6a, a load is applied to the plate 13 until the bone filling material 7 filled in the tooth extraction hole 6a is replaced with new bone. However, since the plate 13 has higher rigidity than the osteoinductive regeneration sheet 8 (see FIG. 6), it is possible to prevent the load from being applied to the bone prosthetic material 7 and being deformed from a desired shape.

また、プレート１３の外周面１４の形状を、凸状曲面としている。このため、歯肉の列開を抑えることができ、安定した形状の歯肉を形成することが可能となる。   The shape of the outer peripheral surface 14 of the plate 13 is a convex curved surface. For this reason, it is possible to suppress the opening of the gingiva, and it is possible to form a gum having a stable shape.

プレート１３に、通孔１７を設けた場合には、血流の促進による、骨誘導のさらなる促進が図られる。   When the through-hole 17 is provided in the plate 13, the bone induction is further promoted by promoting blood flow.

なお、本例のプレート１３は、図２に示すように、抜歯孔６ａの開口部の内径よりも、プレート１３の外径が小さくなるように形成している。このため、前記隙間部分２１から抜歯孔６ａ内に骨補填材７を填入することができる。これに対して、プレートに、通孔１７以外に、骨補填材７を填入するための、例えば切り欠きなどを設け、抜歯孔６ａの開口部の内径と同様の大きさとしてもよい。   In addition, as shown in FIG. 2, the plate 13 of this example is formed so that the outer diameter of the plate 13 is smaller than the inner diameter of the opening of the tooth extraction hole 6a. For this reason, the bone grafting material 7 can be filled into the extraction hole 6a from the gap portion 21. On the other hand, in addition to the through hole 17, the plate may be provided with, for example, a notch for inserting the bone grafting material 7, and may have the same size as the inner diameter of the opening of the tooth extraction hole 6a.

［実施の形態の第２例］
図３、４は、本発明の実施の形態の第２例を示す。 [Second Example of Embodiment]
3 and 4 show a second example of the embodiment of the present invention.

本例のインプラント用骨誘導再生補助具１１ａは、別体に設けられた結合部材１２ａとプレート１３ａとからなる。   The bone guidance / regeneration assisting tool 11a for implants of this example includes a coupling member 12a and a plate 13a provided separately.

結合部材１２ａは、基軸部２３と、基軸部２３の一端部（図３の上端側）に設けた円盤状のフランジ２４とからなる。また、フランジ２４の中心部には、トルク伝達部１６が形成されている。また、基軸部２３の他端側（図３の下端側）の外周面には、取付けネジ部１５が形成されている。   The coupling member 12 a includes a base shaft portion 23 and a disk-shaped flange 24 provided at one end portion (the upper end side in FIG. 3) of the base shaft portion 23. A torque transmission portion 16 is formed at the center of the flange 24. An attachment screw portion 15 is formed on the outer peripheral surface of the base shaft portion 23 on the other end side (lower end side in FIG. 3).

プレート１３ａは、平板部２５と曲面板部２６とからなる。平板部２５は、中央部に平板部２５を貫通する状態で取付け孔２７が形成されている。取付け孔２７の内径は、人工歯根４の開口部２０の開後縁２２の外径、およびフランジ２４の外径よりも小さく、結合部材１２ａの基軸部２３の外径よりも大きい。また、曲面板部２６は、平板部２５の径方向外端面の一部から、平板部２５から径方向外方へ突出する状態で設けられている。なお、平板部２５と曲面板部２６とは一体に形成することも、別体の部材を溶接などにより結合固定することもできる。また、曲面板部２６には、貫通する状態で複数の通孔１７が形成されている。また、曲面板部２６の外周面１４ａ（図３、４の上側周面）は、凸状曲面である。なお、曲面板部２６は、任意の形状に作業者が曲げ加工することができる程度の厚さとし、例えば、０．３ｍｍ程度の厚さが好ましい。   The plate 13 a includes a flat plate portion 25 and a curved plate portion 26. The flat plate portion 25 has a mounting hole 27 formed in the central portion so as to penetrate the flat plate portion 25. The inner diameter of the mounting hole 27 is smaller than the outer diameter of the open rear edge 22 of the opening 20 of the artificial tooth root 4 and the outer diameter of the flange 24, and larger than the outer diameter of the base shaft portion 23 of the coupling member 12a. Further, the curved plate portion 26 is provided in a state of projecting radially outward from the flat plate portion 25 from a part of the radially outer end surface of the flat plate portion 25. The flat plate portion 25 and the curved plate portion 26 can be formed integrally, or separate members can be joined and fixed by welding or the like. Further, the curved plate 26 is formed with a plurality of through holes 17 so as to penetrate therethrough. Moreover, the outer peripheral surface 14a (upper peripheral surface in FIGS. 3 and 4) of the curved plate portion 26 is a convex curved surface. The curved plate portion 26 has a thickness that allows an operator to bend it into an arbitrary shape. For example, a thickness of about 0.3 mm is preferable.

このような、インプラント用骨誘導再生補助具１１ａは、まず、人工歯根４の一端部（図３の上端側）に設けた開口部２０の開口縁２２上に、プレート１３ａの平板部２５を、開口部２０と平板部２５の取付け孔２７とが整合する状態で位置させる。次に、取付け孔２７に結合部材１２ａの基軸部２３を挿通させた状態で、六角レンチをトルク伝達部１６に嵌合し、回転させることで、取付けネジ部１５に回転トルクを伝達する。そして、取付けネジ部１５を、人工歯根４の開口部２０の底部に形成されたネジ穴（図示省略）に螺合して結合固定する。このようにして、インプラント用骨誘導再生補助具１１を人工歯根４に結合固定した状態では、図３の（Ｂ）および図４に示すように、インプラント用骨誘導再生補助具１１ａは開口部２０を完全に塞いでいる。また、プレート１３ａの曲面板部２６は人工歯根４の外周面よりも径方向外方へ突出している。   In such an osteoinductive regeneration assist tool 11a for implants, first, the flat plate portion 25 of the plate 13a is placed on the opening edge 22 of the opening portion 20 provided at one end portion (the upper end side in FIG. 3) of the artificial tooth root 4. The opening 20 and the mounting hole 27 of the flat plate portion 25 are positioned so as to be aligned. Next, in a state where the base shaft portion 23 of the coupling member 12 a is inserted through the mounting hole 27, a torque is transmitted to the mounting screw portion 15 by fitting and rotating a hexagon wrench to the torque transmitting portion 16. Then, the attachment screw portion 15 is screwed into a screw hole (not shown) formed in the bottom portion of the opening portion 20 of the artificial tooth root 4 to be coupled and fixed. In this manner, in the state where the bone guide regeneration assisting tool 11 for implants is coupled and fixed to the artificial tooth root 4, the bone guide regeneration assisting tool 11a for implants has an opening 20 as shown in FIG. 3B and FIG. Is completely blocked. Further, the curved plate portion 26 of the plate 13 a protrudes radially outward from the outer peripheral surface of the artificial tooth root 4.

このため、図４に示すように、インプラント用骨誘導再生補助具１１ａのプレート１３ａの曲面板部２６が、人工歯根４と顎骨１８の周面とにより囲まれる空間である抜歯孔６ｂの開口部の一部を塞いでいる。   Therefore, as shown in FIG. 4, the opening portion of the tooth extraction hole 6 b, which is a space in which the curved plate portion 26 of the plate 13 a of the bone guidance / regeneration assisting tool 11 a for implant is surrounded by the artificial tooth root 4 and the peripheral surface of the jawbone 18. A part of is blocked.

次に、抜歯孔６ｂ内に、抜歯孔６ｂの開口部のうちプレート１３ａの曲面板部２６により塞がれていない隙間部分２１ａから骨補填材７を填入する。そして、前記プレート１３ａの外周面１４ａ（前記フランジ２４の外周面の一部を含む）、および隙間部分２１ａを覆う状態で歯肉１０ａを形成する。   Next, the bone grafting material 7 is inserted into the tooth extraction hole 6b from the gap portion 21a that is not closed by the curved plate portion 26 of the plate 13a among the openings of the tooth extraction hole 6b. And the gingiva 10a is formed in the state which covers the outer peripheral surface 14a (including a part of outer peripheral surface of the said flange 24) of the said plate 13a, and the clearance gap part 21a.

上述したような本例のインプラント用骨誘導再生補助具１１ａの場合、図４に示すように、顎骨１８の骨欠損部が、人工歯根４の片側（図４の左側）方向にのみ生じていて、顎骨１８の高さに差が生じているよう形状の抜歯孔６ｂに対して効果的に用いることができる。   In the case of the bone guidance / regeneration assisting tool 11a of this example as described above, the bone defect portion of the jawbone 18 occurs only in one direction (left side in FIG. 4) of the artificial root 4 as shown in FIG. The tooth extraction hole 6b can be effectively used for the extraction hole 6b so that the height of the jawbone 18 is different.

なお、プレートの形状は、本例の形状に限定されるものではない。骨誘導再生術が施される抜歯孔の形状に合わせて、任意の形状に作業者が曲げ加工したり、予め用意しておいた各種形状のプレートから適宜選択したりすることが可能である。同様に、所定の大きさよりも大きいプレートを予め用意しておき、抜歯孔の形状に合わせて、プレートをハサミなどの工具により加工して使用することもできる。   In addition, the shape of a plate is not limited to the shape of this example. According to the shape of the extraction hole on which the bone regenerative operation is performed, the operator can bend the shape into an arbitrary shape, or can be appropriately selected from variously prepared plates. Similarly, a plate larger than a predetermined size is prepared in advance, and the plate can be used by processing with a tool such as scissors according to the shape of the extraction hole.

その他の作用および効果については、実施の形態の第１例と同様である。   Other operations and effects are the same as in the first example of the embodiment.

［実施の形態の第３例］
図５は、本発明の実施の形態の第３例を示す。 [Third example of embodiment]
FIG. 5 shows a third example of the embodiment of the present invention.

本例のインプラント用骨誘導再生補助具１１ｂは、上述した実施の形態の第２例のインプラント用骨誘導再生補助具１１ａの構造に、プレート１３ａの高さ位置を調節するための調節筒２８を加えた構造からなる。なお、結合部材１２ａの基軸部２３の長さは、第２例と比較して調節筒２８の長さ分だけ長くしている。   The bone guide / regeneration assisting tool 11b for implants of this example has an adjustment cylinder 28 for adjusting the height position of the plate 13a in the structure of the bone guide / regeneration assisting tool 11a for implants of the second example of the embodiment described above. It consists of an added structure. In addition, the length of the base shaft portion 23 of the coupling member 12a is made longer by the length of the adjustment cylinder 28 than the second example.

調整筒２８は、大径部２９と小径部３０とを段部により連続させた円筒状である。大径部の外径は、人工歯根４の開口部２０の内径、およびプレート１３ａの取付け孔２７の内径よりも大きい。また、小径部の外径は、人工歯根４の開口部２０の内径よりわずかに小さい。また、調整筒２８の内径は結合部材１２ａの基軸部２３よりも大きい。   The adjustment cylinder 28 has a cylindrical shape in which a large-diameter portion 29 and a small-diameter portion 30 are continuous by stepped portions. The outer diameter of the large diameter portion is larger than the inner diameter of the opening 20 of the artificial tooth root 4 and the inner diameter of the mounting hole 27 of the plate 13a. Further, the outer diameter of the small diameter portion is slightly smaller than the inner diameter of the opening 20 of the artificial tooth root 4. The inner diameter of the adjustment cylinder 28 is larger than the base shaft portion 23 of the coupling member 12a.

このような調整筒２８は、小径部３０を人工歯根４の開口部２０に内嵌した状態で、結合部材１２ａによりプレート１３ａと人工歯根４との間に組み付けられる。   Such an adjustment cylinder 28 is assembled between the plate 13a and the artificial tooth root 4 by the coupling member 12a in a state where the small diameter portion 30 is fitted in the opening 20 of the artificial tooth root 4.

本例の場合、図４に示すような人工歯根４の右側の顎骨１８の高さが、図４に示す高さよりも高い場合などに有効に用いることができる。   In the case of this example, it can be effectively used when the height of the right jawbone 18 of the artificial tooth root 4 as shown in FIG. 4 is higher than the height shown in FIG.

なお、各種長さの調節筒を予め用意することにより、治療の際、顎骨の高さに合わせて適切な長さの調節筒を選択して使用することができる。   In addition, by preparing adjustment tubes of various lengths in advance, an adjustment tube having an appropriate length can be selected and used in accordance with the height of the jawbone during treatment.

その他の作用および効果については、実施の形態の第２例と同様である。   Other operations and effects are the same as in the second example of the embodiment.

本発明は、特に歯科インプラントにおける、歯牙欠損時の歯牙再生術の際に行なう骨誘導再生術に適用される。ただし、これ以外にも、例えば、整形外科の分野などにおいて、人工歯根と類似の形状のインプラントを用いて、骨吸収などにより生じた骨欠損部の空間確保や、骨欠損部の骨誘導再生術を施す際にも、本発明の骨誘導再生補助具を適用することが可能である。   The present invention is applied to osteoinductive regenerative surgery that is performed at the time of tooth regeneration when a tooth is missing, particularly in a dental implant. However, in addition to this, for example, in the field of orthopedic surgery, using an implant having a shape similar to that of an artificial tooth root, securing a space for a bone defect caused by bone resorption, etc., or bone guided regeneration of the bone defect Also when performing the above, it is possible to apply the osteoinductive regeneration aid of the present invention.

１ 舌側顎骨
２ 頬側顎骨
３ 人工歯根床
４ 人工歯根
５ ネジ部
６、６ａ、６ｂ 抜歯孔
７ 骨補填材
８ 骨誘導再生シート
９ シート固定ピン
１０、１０ａ 歯肉
１１、１１ａ、１１ｂ 骨誘導再生補助具
１２、１２ａ 結合部材
１３、１３ａ プレート
１４、１４ａ 外周面
１５ 取付けネジ部
１６ トルク伝達部
１７ 通孔
１８ 顎骨
１９ 歯槽骨
２０ 開口部
２１、２１ａ 隙間部分
２２ 開口縁
２３ 基軸
２４ フランジ
２５ 平板部
２６ 曲面板部
２７ 取付け孔
２８ 調節筒
２９ 大径部
３０ 小径部 DESCRIPTION OF SYMBOLS 1 Lingual jawbone 2 Buccal jawbone 3 Artificial root base 4 Artificial root 5 Screw part 6, 6a, 6b Extraction hole 7 Bone filling material 8 Bone guidance regeneration sheet 9 Sheet fixation pin 10, 10a Gingival 11, 11a, 11b Bone guidance regeneration Auxiliary tools 12 and 12a Connecting members 13 and 13a Plates 14 and 14a Outer peripheral surface 15 Mounting screw portion 16 Torque transmission portion 17 Through hole 18 Jaw bone 19 Alveolar bone 20 Opening portion 21 and 21a Clearance portion 22 Opening edge 23 Base shaft 24 Flange 25 Flat plate portion 26 Curved surface plate 27 Mounting hole 28 Adjustment cylinder 29 Large diameter portion 30 Small diameter portion

Claims (6)

プレートと、該プレートを骨に埋入されているインプラントの一端部に形成された開口部に結合固定するための結合部材とからなるインプラント用骨誘導再生補助具であって、前記プレートは、前記結合部材の一端側に接続されており、該プレートは、径方向の外端縁の一部または全部が前記インプラントの外周面よりも径方向外方へ突出するように形状および大きさが定められており、前記結合部材が前記インプラントの前記開口部に螺合固定された状態で、前記プレートが、該インプラントと前記骨とにより囲まれる空間の開口の一部を塞ぐことが可能となっている、インプラント用骨誘導再生補助具。   A bone guide regeneration assisting device for an implant, comprising: a plate; and a coupling member for coupling and fixing the plate to an opening formed at one end of the implant embedded in the bone, The plate is connected to one end side of the coupling member, and the plate is shaped and sized so that part or all of the outer edge in the radial direction protrudes radially outward from the outer peripheral surface of the implant. In the state where the coupling member is screwed and fixed to the opening of the implant, the plate can block a part of the opening of the space surrounded by the implant and the bone. , Bone guidance regeneration aid for implants. 前記プレートが、前記結合部材と一体に形成されている、請求項１に記載するインプラント用骨誘導再生補助具。   The bone guide regeneration assisting tool for an implant according to claim 1, wherein the plate is formed integrally with the coupling member. 前記プレートが、前記結合部材とは別体に設けられる、請求項１に記載するインプラント用骨誘導再生補助具。   The bone guide regeneration assisting tool for implants according to claim 1, wherein the plate is provided separately from the coupling member. 前記プレートの、前記結合部材の前記一端部側にある周面が、凸状曲面である、請求項１〜３のいずれか１項に記載するインプラント用骨誘導再生補助具。   The bone guidance regeneration aid for implants according to any one of claims 1 to 3, wherein a peripheral surface of the plate on the one end side of the coupling member is a convex curved surface. 前記プレートに、該プレートを貫通する通孔が設けられている、請求項１〜４のいずれか１項に記載したインプラント用骨誘導再生補助具。   The bone induction regeneration aid for implants according to any one of claims 1 to 4, wherein the plate is provided with a through-hole penetrating the plate. 前記インプラントが人工歯根である、請求項１〜５のいずれか１項に記載したインプラント用骨誘導再生補助具。   The bone guidance regeneration aid for implants according to any one of claims 1 to 5, wherein the implant is an artificial tooth root.
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KR101181877B1 (en) 2011-07-29 2012-09-11 오스템임플란트 주식회사 Membrane for bone-repair
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