WO2013128952A1 - Root canal treatment instrument - Google Patents

Root canal treatment instrument Download PDF

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Publication number
WO2013128952A1
WO2013128952A1 PCT/JP2013/050165 JP2013050165W WO2013128952A1 WO 2013128952 A1 WO2013128952 A1 WO 2013128952A1 JP 2013050165 W JP2013050165 W JP 2013050165W WO 2013128952 A1 WO2013128952 A1 WO 2013128952A1
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WIPO (PCT)
Prior art keywords
optical fiber
root canal
fiber bundle
fibers
canal treatment
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PCT/JP2013/050165
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French (fr)
Japanese (ja)
Inventor
高橋　淳
Original Assignee
Takahashi Atsushi
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Publication of WO2013128952A1 publication Critical patent/WO2013128952A1/en

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C19/00—Dental auxiliary appliances
    • A61C19/003—Apparatus for curing resins by radiation
    • A61C19/004—Hand-held apparatus, e.g. guns
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C5/00—Filling or capping teeth
    • A61C5/50—Implements for filling root canals; Methods or instruments for medication of tooth nerve channels
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D1/00—Bristles; Selection of materials for bristles
    • A46D1/02—Bristles details
    • A46D1/0207—Bristles characterised by the choice of material, e.g. metal
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C3/00—Dental tools or instruments
    • A61C3/005—Brushes for applying dental compositions

Definitions

  • the present invention relates to an instrument used for dental root canal treatment.
  • glue material for root canal filling for dental root canal treatment, glue material, gutta percha, silver point, chemical polymerization resin, zinc oxide cement, etc. are used alone or in combination.
  • the abutment is constructed.
  • a root canal treatment instrument which is an instrument for root canal treatment described in Japanese Patent Application Laid-Open No. 2003-144458.
  • This root canal treatment instrument is as shown in FIG.
  • this root canal treatment instrument includes a light diffusing fiber 1001 and a bundled optical fiber 1002 that transmits light, and is used in combination with a suitable light source 2000.
  • This root canal treatment instrument is preferably used in a state where a liquid photopolymerization sealer having a dental adhesive property and polymerized by irradiating light of a predetermined wavelength is applied in the root canal.
  • the tip of the light diffusion fiber 1001 is inserted into the root canal, and light transmitted from the light source 2000 to the light diffusion fiber 1001 through the optical fiber 1002 is photopolymerized from the outer periphery of the light diffusion fiber 1001. Irradiates the sealer.
  • the photopolymerization sealer is cured by light irradiated from the periphery of the light diffusing fiber 1001, and the inside of the root canal is filled with the cured photopolymerization sealer.
  • the above-mentioned root canal treatment instrument is superior in that it does not cause much dead sky at the time of root canal filling by utilizing the curing of the photopolymerization sealer.
  • the above-mentioned root canal treatment device has several difficulties.
  • the difficulty is as follows. 1. In the above-mentioned root canal treatment instrument, it is difficult to completely cure the photopolymerization sealer to the vicinity of the deepest apex of the root canal.
  • the light diffusing fiber 1001 is difficult to propagate light to its tip without loss. Therefore, it is difficult to completely cure the photopolymerization sealer to the vicinity of the deepest apex of the root canal.
  • the light diffusing fiber 1001 in the above-mentioned root canal treatment instrument is required to have characteristics such as low light propagation loss for irradiating light, so that it can be smoothly inserted into the root canal. It is difficult to have. Even if such flexibility is provided, it is necessary to prepare a plurality of light diffusion fibers 1001 having different thicknesses and shapes in order to be used for treatment of root canals having various thicknesses and shapes. Become. This means that it is necessary to prepare a plurality of molds for molding the light diffusion fibers 1001 having various thicknesses and shapes, but the cost is large. This rebounds on the cost of the root canal treatment instrument or treatment performed using it. 3. The above countermeasure 1 is difficult.
  • the conventional root canal treatment including the above-mentioned root canal treatment instrument has the following problems. It is related to the construction of the abutment performed after root canal filling as described above.
  • the construction of the abutment performed after root canal filling by conventional root canal treatment is generally performed by filling the space inside the tooth filled with the root canal with a resin or cement called a core.
  • a core a resin or cement
  • simply filling the internal space of the tooth with the core may cause the core to fall out of the internal space of the tooth or break. Therefore, in many cases, the root canal filled with the root canal is drilled using a peasor reamer, etc., and the hole is made to maintain the post, and the core is supported by the post. It is done to prevent the core from falling off.
  • the support capacity of the abutment increases in proportion to the length of the post, the hole formed in the root canal filled with the root canal becomes deeply deep.
  • drilling using a peasor reamer or the like is good at drilling a straight hole, but is not good at making a curved hole along a curved hole such as a root canal. The work is therefore difficult and requires a high level of attention.
  • the present invention makes it possible to more safely construct an abutment that is performed after root canal filling in root canal therapy, and at the same time, to the vicinity of the deepest apex of the root canal without using a dual cure type sealer. It is an object of the present invention to provide a root canal treatment instrument that can be firmly filled and cured with a photopolymerization sealer and that is more cost-effective than at least using a light diffusing fiber.
  • the root canal treatment instrument of the present invention has a flexible structure as a whole by bundling a plurality of flexible optical fibers, each of which has different lengths, the base ends of which are aligned.
  • the light supplied to the root canal by inserting the optical fiber bundle in a state impregnated with a liquid photopolymerization sealer that is polymerized and cured by irradiating with light of a predetermined wavelength.
  • the polymerization sealer is hardened with the light having the predetermined wavelength irradiated from the distal ends of the plurality of optical fibers through the optical fiber from the proximal end of the optical fiber bundle, and the photopolymerization sealer is hardened. After the base end of the optical fiber bundle so that the can be used as a post.
  • Each of these root canal treatment instruments is a bundle of flexible optical fibers, and includes a flexible optical fire bundle as a whole.
  • This optical fiber bundle is inserted into the root canal and light is irradiated to the photopolymerization sealer from the (basically) tip of each optical fiber.
  • the optical fiber bundle since the optical fiber bundle is flexible, it has a different length.
  • the fact that the optical fiber is included in the optical fiber bundle means that the number of optical fibers constituting the optical fiber bundle decreases as it approaches the tip, so that the flexibility of the optical fiber bundle increases as it approaches the tip. It is easy to insert the bundle to the apex near the back of the root canal. Therefore, this root canal treatment instrument easily irradiates light to the vicinity of the apex at the back of the root canal.
  • the thickness and shape of the optical fiber bundle can be changed by simply changing the length of each optical fiber and the number of optical fibers of each length.
  • the optical fiber bundle in this root canal treatment instrument is a bundle of optical fibers. Therefore, the optical fiber bundle can include a liquid photopolymerization sealer between each optical fiber, just like a brush contains black ink.
  • the optical fiber bundle By inserting the optical fiber bundle into the root canal, It is possible to supply the photopolymerization sealer to the root apex.
  • this root canal treatment instrument makes the treatment of root canal filling using a photopolymerization sealer more practical.
  • the thicknesses of the optical fibers included in the optical fiber bundle are not necessarily the same, but the thickness is selected in such a range that a liquid photopolymerization sealer can be included therebetween.
  • the proximal end side (and fixing means) of the optical fiber bundle integrated with the root canal can be used as a post. There is no need to provide a new post, and there is no need to make a new hole in the root canal.
  • the optical fibers included in the optical fiber bundle include those having different lengths.
  • the cross-sectional shape of the optical fiber bundle is not necessarily circular, and an appropriate shape such as an ellipse can be adopted.
  • how many optical fibers of which length are used can be appropriately selected in relation to the root canal to be treated.
  • the optical fiber bundle As for the said optical fiber bundle, what is located in the center of the many said optical fibers which comprise it, or its vicinity may be made the longest. Thereby, the optical fiber bundle can be formed into a shape having a taper that narrows toward the tip.
  • the optical fiber bundle can be more easily inserted to the root apex of the root canal.
  • the optical fiber bundle may be configured in a brush shape as a whole, with the one positioned at the center of the plurality of optical fibers constituting the optical fiber bundle being the longest and the one being positioned closer to the outer edge being shortened. .
  • the optical fiber bundle can be more easily inserted up to the root apex of the root canal.
  • light is basically applied to the photopolymerization sealer from the tip of each optical fiber.
  • optical fibers each have a core through which light passes and a clad covering the core
  • light is emitted from a desired position of at least some of the clads of the optical fibers.
  • the fixing means may be anything as long as it fixes a large number of optical fibers in the optical fiber bundle in a state where the base ends of the optical fiber bundles, which are a set of base ends of the many optical fibers, are exposed,
  • an adhesive may be used.
  • the fixing means may be a cylinder or a ring formed of a cloth made of fiber, and the optical fiber bundle passing through the inside may be compressed inward.
  • the shape of the optical fiber bundle can be easily maintained.
  • the fixing means may be a string made of fiber, and the optical fiber bundle may be compressed inward while being wound around the optical fiber bundle. By binding with a string, the shape of the optical fiber bundle can be easily maintained.
  • the above-mentioned fibers constituting the cylinder or ring or string may be resin fibers, carbon fibers, or glass fibers. If these are materials, it is easy to reduce the influence on the human body.
  • FIG. 1 The perspective view which shows the structure of the root canal treatment instrument by one Embodiment.
  • Sectional drawing which shows the use condition of the root canal treatment instrument shown in FIG.
  • Sectional drawing which shows the state after performing root canal treatment using the root canal treatment instrument shown in FIG.
  • the perspective view which shows the root canal treatment instrument by a modification.
  • the root canal treatment instrument includes an optical fiber bundle 1 and a fixture 2.
  • the optical fiber bundle 1 is a bundle of many optical fibers 1A.
  • Each of the multiple optical fibers 1A is made of resin and has flexibility.
  • the optical fiber 1A includes ones having different lengths, but their base ends (upper side in FIG. 1) are aligned and flush with each other.
  • a set of proximal ends of the optical fibers 1 ⁇ / b> A is a proximal end 1 ⁇ / b> B of the optical fiber bundle 1.
  • a large number of optical fibers 1A are compressed inward by a cylindrical fixture 2 so that the optical fiber bundle 1 can maintain its shape.
  • the optical fiber 1A is provided with a core and a clad as shown in a general-purpose optical fiber, although not shown.
  • the core is a part that transmits light in the optical fiber 1A
  • the clad is a part that covers the core and prevents light from leaking out of the core due to total reflection or the like.
  • Each optical fiber 1A transmits the light irradiated to the base end in the length direction, and irradiates from the front end.
  • the clad may be removed from some portions of the optical fiber 1A. In this case, a part of the light irradiated to the base end of the optical fiber 1A leaks from the portion where the cladding is removed.
  • each optical fiber 1A may or may not be the same.
  • the characteristics of each optical fiber 1A, such as the ratio of the core and the clad, may or may not be the same.
  • Each optical fiber 1A in the optical fiber bundle 1 includes ones having different lengths as described above.
  • the optical fiber bundle 1 may have a taper such that the optical fiber 1A at the center or the vicinity thereof is the longest and becomes narrower toward the tip as a whole.
  • the one located at the center of many optical fibers 1A is the longest, and more precisely, the one located at the center of many optical fibers 1A is the longest. The closer to the outer edge, the shorter. Thereby, the optical fiber bundle 1 is configured in a brush shape as a whole.
  • the fixture 2 maintains the shape of the optical fiber bundle 1 by compressing the optical fiber 1A in the optical fiber bundle 1 inward as described above.
  • the fixture 2 is formed of a cloth made of fibers.
  • the cloth may be woven or non-woven, and may be knitted.
  • the fibers constituting the cloth can be resin fibers, carbon fibers, or glass fibers, and in this embodiment, the fibers are carbon fibers.
  • the tip of the optical fiber bundle 1 is immersed in a photopolymerization sealer 3 contained in a predetermined container (not shown), and the photopolymerization sealer 3 is placed on the tip side of the brush-like optical fiber bundle 1 as shown in FIG. Include enough.
  • Each optical fiber 1A is preferably thin enough to allow the optical fiber bundle 1 to sufficiently contain the photopolymerization sealer by capillary action, and in this embodiment, it is so.
  • the photopolymerization sealer 3 may be a general one, but in this embodiment, it has tooth adhesion.
  • the root canal 101 is generally a root canal of infected pulp or necrotic pulp, but removal and cleaning of dentin and the like are appropriately performed. Since the optical fiber bundle 1 has a thin tip, it easily reaches the apex 102 at the back of the root canal 101.
  • the photopolymerization sealer 3 included in the optical fiber bundle 1 easily reaches the root apex 102 of the root canal 101.
  • a light source (not shown) is connected to the optical fiber bundle 1.
  • the light source is connected to the base end 1 ⁇ / b> B of the optical fiber bundle 1.
  • the light source may be anything as long as it can irradiate light including light having a wavelength for curing the photopolymerization sealer 3.
  • the light is applied to the photopolymerization sealer 3 from the tip of the optical fiber 1A constituting the optical fiber bundle 1. If the optical fiber 1A has a portion from which the cladding is removed, the light leaking from the portion is irradiated to the photopolymerization sealer 3. Thus, the cured photopolymerization sealer 3 is filled up to the root apex 102 of the root canal 101. At this time, the root canal 101 and the optical fiber bundle 1 are integrated, and as a result, the root canal 101 and the root canal treatment instrument are integrated.
  • the proximal end 1B side of the optical fiber bundle 1 of the root canal treatment instrument is exposed from the surface of the resin 4.
  • the root canal treatment instrument is available as a post.
  • FIG. 1 A modification of the root canal treatment instrument is shown in FIG.
  • the root canal treatment instrument fixture 2 of Modification A has a plurality of rings, and the root canal therapy instrument fixture 2 of Modification B has a plurality of cylinders.
  • the therapeutic instrument fixture 2 is a string wound around the optical fiber bundle 1, and the root canal therapy instrument fixture 2 of Modification D is cylindrical, both of which are connected to the optical fiber bundle 1. Force inward.
  • the fixture 2 of Modification B is made of a resin fiber, carbon fiber, or glass fiber cloth, and the Fixture 2 of Modifications A and C is made of a resin fiber, carbon fiber, or glass fiber string. Yes.
  • the fixture 2 of the modification D is comprised with the glass fiber which impregnated the photopolymerization sealer.
  • the configuration of the fixture 2 may be appropriately designed so that the strength when the root canal treatment instrument functions as a post can be further increased.
  • Left and right can be easily selected using a switch attached to the chassis, and by installing a translucent hood on the side edge, it can be applied to applications where high brightness lighting is required and direct viewing of the input position by the operator is essential. .

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  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

[Problem] To provide a highly practical root canal treatment instrument for which there is no need to build a post, which is dangerous. [Solution] A root canal treatment instrument equipped with an optical fiber bundle (1) in which optical fibers (1A) are bundled, and a holding fixture (2) that maintains the shape of the optical fiber bundle (1). The optical fiber bundle (1) has a brush-like shape, and can include a photopolymerizable sealer (3). When the tip of the optical fiber bundle (1) is inserted into a root canal and light is shone into the base end (1B), the photopolymerizable sealer (3) is hardened by the light emitted from the tips of the optical fibers (1A), and the root canal treatment instrument is integrated with the root canal.

Description

根管治療器具Root canal treatment instrument
　本発明は、歯科根管治療に用いる器具に関する。 The present invention relates to an instrument used for dental root canal treatment.
　一般に、歯科根管治療の根管充填には、糊材、ガッタパーチャ、銀ポイント、化学重合樹脂、ジンクオキサイトセメントなどが単独あるいは併用使用されている。 Generally, for root canal filling for dental root canal treatment, glue material, gutta percha, silver point, chemical polymerization resin, zinc oxide cement, etc. are used alone or in combination.
　そして、根管治療では多くの場合、根管充填を行った後、支台の構築が行なわれる。 In many cases of root canal treatment, after the root canal is filled, the abutment is constructed.
　しかしながら、根管治療では、細い根管を死空無く完全に充填閉塞することは困難である。 However, in root canal treatment, it is difficult to completely fill and close a thin root canal without dead space.
　そのような不具合を解消するため、本願出願人は、特開２００３－１４４４５８の根管治療のための器具である根管治療器具を提案している。この根管治療器具は、図５に示したようなものである。 In order to solve such a problem, the applicant of the present application has proposed a root canal treatment instrument which is an instrument for root canal treatment described in Japanese Patent Application Laid-Open No. 2003-144458. This root canal treatment instrument is as shown in FIG.
　より詳細には、この根管治療器具は、光拡散ファイバ１００１と、光を伝送する束ねられた光ファイバ１００２を備えてなり、適当な光源２０００と組合せて用いられる。この根管治療器具は、好ましくは歯質接着性を有する、所定波長の光を照射することにより重合する液状の光重合シーラーを根管内に塗布した状態で用いられる。根管治療器具は、根管内にその光拡散ファイバ１００１の先端を挿入して、光源２０００から光ファイバ１００２を介して光拡散ファイバ１００１に送られた光を光拡散ファイバ１００１の外周から光重合シーラーに照射するものである。光拡散ファイバ１００１の周囲から照射された光により光重合シーラーは硬化され、それにより根管内が硬化した光重合シーラーにて充填される。 More specifically, this root canal treatment instrument includes a light diffusing fiber 1001 and a bundled optical fiber 1002 that transmits light, and is used in combination with a suitable light source 2000. This root canal treatment instrument is preferably used in a state where a liquid photopolymerization sealer having a dental adhesive property and polymerized by irradiating light of a predetermined wavelength is applied in the root canal. In the root canal treatment instrument, the tip of the light diffusion fiber 1001 is inserted into the root canal, and light transmitted from the light source 2000 to the light diffusion fiber 1001 through the optical fiber 1002 is photopolymerized from the outer periphery of the light diffusion fiber 1001. Irradiates the sealer. The photopolymerization sealer is cured by light irradiated from the periphery of the light diffusing fiber 1001, and the inside of the root canal is filled with the cured photopolymerization sealer.
日本国特許第4093750号Japanese Patent No. 4093750
　上述の根管治療器具は、光重合シーラーの硬化を利用することにより、根管充填の際に死空をそれほど生じさせない点で優れている。 The above-mentioned root canal treatment instrument is superior in that it does not cause much dead sky at the time of root canal filling by utilizing the curing of the photopolymerization sealer.
　しかしながら、上述の根管治療器具には幾つかの難点がある。その難点は以下のようなものである。
１．上述の根管治療器具は根管の一番奥の根尖付近まで光重合シーラーを完全に硬化させることが困難である。 However, the above-mentioned root canal treatment device has several difficulties. The difficulty is as follows.
1. In the above-mentioned root canal treatment instrument, it is difficult to completely cure the photopolymerization sealer to the vicinity of the deepest apex of the root canal.
　光拡散ファイバ１００１は、その先端まで光をロスなく伝搬させるのが難しい。それ故、根管の一番奥の根尖付近まで光重合シーラーを完全に硬化させることが困難である。 The light diffusing fiber 1001 is difficult to propagate light to its tip without loss. Therefore, it is difficult to completely cure the photopolymerization sealer to the vicinity of the deepest apex of the root canal.
　また、上述の如き光拡散ファイバ１００１を用いた根管治療器具を用いる場合には、予め光重合シーラーを根管内の全面に塗布することが必要であるが、先細りの形状の根管内の特に根尖付近にまで、むらなく光重合シーラーを塗布することは簡単ではない。光拡散ファイバ１００１の外周に塗布した光重合シーラーを、光拡散ファイバ１００１を根管内に挿入することにより根管内に塗布することも考えられるが、光拡散ファイバ１００１の外周に光重合シーラーを均一に塗布することがまず難しく、また、光拡散ファイバ１００１への塗布、根管内への転写による塗布を両立させるためには光重合シーラーの粘稠度に厳しい制限があるから、その調整も簡単ではない。
２．上述の根管治療器具はコスト面で不利になりがちである。 In addition, when using a root canal treatment instrument using the light diffusion fiber 1001 as described above, it is necessary to apply a photopolymerization sealer to the entire surface of the root canal in advance. It is not easy to apply the photopolymerization sealer evenly, especially near the apex. Although it is conceivable to apply the photopolymerization sealer applied to the outer periphery of the light diffusion fiber 1001 in the root canal by inserting the light diffusion fiber 1001 into the root canal, the photopolymerization sealer is applied to the outer periphery of the light diffusion fiber 1001. It is difficult to apply uniformly, and in order to achieve both application to the light diffusion fiber 1001 and application by transfer into the root canal, the viscosity of the photopolymerization sealer is severely limited. It is not easy.
2. The above-mentioned root canal treatment instrument tends to be disadvantageous in cost.
　上述の根管治療器具における光拡散ファイバ１００１は、光を照射するための、例えば光の伝搬ロスの少なさ等の特性が要求されるから、根管内にスムーズに挿入できるような可撓性を持たせるのが難しい。仮にそのような可撓性を持たせたとしても、様々な太さ、形状の根管の治療に用いるためには、太さ、形状の異なる複数の光拡散ファイバ１００１を準備することが必要となる。これは、様々な太さ、形状の光拡散ファイバ１００１を成形するための金型を複数準備することが必要となることを意味するが、そのコストは大である。これが根管治療器具或いはそれを用いて行う治療のコストに跳ね返る。
３．上記１の対策が難しい。 The light diffusing fiber 1001 in the above-mentioned root canal treatment instrument is required to have characteristics such as low light propagation loss for irradiating light, so that it can be smoothly inserted into the root canal. It is difficult to have. Even if such flexibility is provided, it is necessary to prepare a plurality of light diffusion fibers 1001 having different thicknesses and shapes in order to be used for treatment of root canals having various thicknesses and shapes. Become. This means that it is necessary to prepare a plurality of molds for molding the light diffusion fibers 1001 having various thicknesses and shapes, but the cost is large. This rebounds on the cost of the root canal treatment instrument or treatment performed using it.
3. The above countermeasure 1 is difficult.
　上記１の対策として、光重合により硬化を行う光重合シーラーではなく、光重合の性能と、特定の物質との反応をきっかけに硬化を行う化学重合の性能とを兼ね揃えたデュアルキュアータイプのシーラーを用いることも考えられる。しかしながら、デュアルキュアータイプのシーラーは予めの混合攪拌が必要である等扱いに手間がかかり、また光が照射されないので化学重合を待つしか無いこととなりかねない根尖付近のシーラーが生体組織に異害を与えるおそれを避けられない。 As a countermeasure for the above 1, not a photopolymerization sealer that cures by photopolymerization, but a dual cure type sealer that combines the performance of photopolymerization and the performance of chemical polymerization that cures by reaction with a specific substance. It is also possible to use. However, the dual cure type sealer is troublesome to handle, such as pre-mixing and stirring, and because it is not irradiated with light, the sealer near the apex that can only have to wait for chemical polymerization is harmful to living tissue The risk of giving is inevitable.
　上述の根管治療器具には以上のような解決すべき点があるが、上述の根管治療器具を含めた従来の根管治療には更に、以下のような不具合がある。それは、上述した、根管充填を行った後に行なわれる支台の構築と関連する。 Although the above-mentioned root canal treatment instrument has the above-mentioned points to be solved, the conventional root canal treatment including the above-mentioned root canal treatment instrument has the following problems. It is related to the construction of the abutment performed after root canal filling as described above.
　従来の根管治療で根管充填を行った後に行なわれる支台の構築は一般に、根管充填された歯の内部の空間を、コアと呼ばれる樹脂やセメントで埋めることにより行なわれる。しかしながら、歯の内部の空間を単純にコアで充填したのみではコアが歯の内部の空間から脱落したり或いは破損したりするおそれがある。したがって、多くの場合、根管充填がされた根管に対してピーソーリーマーなどを用いてドリリングを行い、そうして作った穴にポストの維持を行なわせ、そのポストにコアを支持させてコアの脱落を防ぐ、ということが行なわれる。この場合、支台の支持能力はポストの長さに比例して高まるので、根管充填された根管に空ける穴はいきおい深くなる。しかしながら、ピーソーリーマーなどを用いて行うドリリングは、直線的な穴を穿つのは得意でも根管のような湾曲した穴に沿った湾曲した穴を空けるのは不得意である。したがってその作業は難しく、高いレベルでの注意を要するものとなる。 The construction of the abutment performed after root canal filling by conventional root canal treatment is generally performed by filling the space inside the tooth filled with the root canal with a resin or cement called a core. However, simply filling the internal space of the tooth with the core may cause the core to fall out of the internal space of the tooth or break. Therefore, in many cases, the root canal filled with the root canal is drilled using a peasor reamer, etc., and the hole is made to maintain the post, and the core is supported by the post. It is done to prevent the core from falling off. In this case, since the support capacity of the abutment increases in proportion to the length of the post, the hole formed in the root canal filled with the root canal becomes deeply deep. However, drilling using a peasor reamer or the like is good at drilling a straight hole, but is not good at making a curved hole along a curved hole such as a root canal. The work is therefore difficult and requires a high level of attention.
　本願発明は、根管治療において根管充填を行った後に行なわれる支台の構築をより安全に行えると同時に、デュアルキュアータイプのシーラーを用いずとも、根管の一番奥の根尖付近まで光重合シーラーをしっかり充填させ硬化させることができ、更に少なくとも光拡散ファイバを用いるよりコスト面で有利な根管治療器具を提供することを課題とする。 The present invention makes it possible to more safely construct an abutment that is performed after root canal filling in root canal therapy, and at the same time, to the vicinity of the deepest apex of the root canal without using a dual cure type sealer. It is an object of the present invention to provide a root canal treatment instrument that can be firmly filled and cured with a photopolymerization sealer and that is more cost-effective than at least using a light diffusing fiber.
　上述の課題を解決するため、本願発明者は以下の発明を提案する。 In order to solve the above-mentioned problems, the present inventor proposes the following invention.
　本願発明の根管治療器具は、それらの基端が揃うようにされた、長さが異なるものを含みそのそれぞれが可撓性を有する多数の光ファイバを束ねた、全体として可撓性を有する光ファイバ束と、前記光ファイバ束中の多数の前記光ファイバを、多数の前記光ファイバの基端の集合である前記光ファイバ束の基端が露出する状態で固定する固定手段と、を備えてなり、所定波長の光を照射することにより重合して硬化する液状の光重合シーラーを含浸させた状態の前記光ファイバ束を根管内に挿入することで前記根管内に供給した前記光重合シーラーを、前記光ファイバ束の基端から前記光ファイバを通して多数の前記光ファイバの先端から照射される前記所定波長の光で硬化させられるようになっているとともに、前記光重合シーラーが硬化した後に、前記光ファイバ束の基端側をポストとして用いることができるようになっている。 The root canal treatment instrument of the present invention has a flexible structure as a whole by bundling a plurality of flexible optical fibers, each of which has different lengths, the base ends of which are aligned. An optical fiber bundle, and a fixing means for fixing a large number of the optical fibers in the optical fiber bundle in a state where the proximal ends of the optical fiber bundles, which are a set of proximal ends of the optical fibers, are exposed. The light supplied to the root canal by inserting the optical fiber bundle in a state impregnated with a liquid photopolymerization sealer that is polymerized and cured by irradiating with light of a predetermined wavelength. The polymerization sealer is hardened with the light having the predetermined wavelength irradiated from the distal ends of the plurality of optical fibers through the optical fiber from the proximal end of the optical fiber bundle, and the photopolymerization sealer is hardened. After the base end of the optical fiber bundle so that the can be used as a post.
　この根管治療器具は、一本一本が可撓性を有する光ファイバを束ねたものであり、全体として可撓性を有する光ファイア束を備えている。この光ファイバ束を根管に挿入して各光ファイバの（基本的には）先端から光を光重合シーラーに照射するのであるが、光ファイバ束が可撓性を有するから、また、異なる長さの光ファイバが光ファイバ束に含まれるということは、先端に近づくにつれ光ファイバ束を構成する光ファイバの本数が小さくなるため先端に近づく程光ファイバ束の可撓性が増すから、光ファイバ束を根管の奥の根尖付近まで挿入し易い。それ故、この根管治療器具は、根管の奥の根尖付近まで光を照射しやすい。光ファイバ束を形作る各光ファイバの光の伝搬率は光拡散ファイバよりも高いから尚更である。したがってこの根管治療器具を用いれば、根管の根尖まで光重合シーラーをしっかり充填させ硬化させることができる。他方、扱いの面倒なデュアルキュアータイプのシーラーを用いることが不要になり、また、デュアルキュアータイプのシーラーを用いることによる生体組織に対する異害も避けられるようになるから、簡単に利用でき且つ安全性が高い。 Each of these root canal treatment instruments is a bundle of flexible optical fibers, and includes a flexible optical fire bundle as a whole. This optical fiber bundle is inserted into the root canal and light is irradiated to the photopolymerization sealer from the (basically) tip of each optical fiber. However, since the optical fiber bundle is flexible, it has a different length. The fact that the optical fiber is included in the optical fiber bundle means that the number of optical fibers constituting the optical fiber bundle decreases as it approaches the tip, so that the flexibility of the optical fiber bundle increases as it approaches the tip. It is easy to insert the bundle to the apex near the back of the root canal. Therefore, this root canal treatment instrument easily irradiates light to the vicinity of the apex at the back of the root canal. This is especially true because the light propagation rate of each optical fiber forming the optical fiber bundle is higher than that of the light diffusion fiber. Therefore, if this root canal treatment instrument is used, the photopolymerization sealer can be firmly filled and cured to the apex of the root canal. On the other hand, it is no longer necessary to use a cumbersome dual cure type sealer, and it is easy to use and safe because it avoids any damage to living tissue caused by using a dual cure type sealer. Is expensive.
　また、光ファイバ束は、仮に各光ファイバが長さ以外は同一であったとしても、各光ファイバの長さや、それぞれの長さの光ファイバの本数を変更するだけで、その太さ、形状を変更することができ、更にはその可撓性の調整も行えるが、そのために金型を必要とすることはない。したがって、この根管治療器具によれば、少なくとも光拡散ファイバを用いるよりはコストを上げずに様々な根管に対して治療を行えるようになる。 Moreover, even if each optical fiber is the same except for the length, the thickness and shape of the optical fiber bundle can be changed by simply changing the length of each optical fiber and the number of optical fibers of each length. However, it is not necessary to use a mold for this purpose. Therefore, according to this root canal treatment instrument, it becomes possible to treat various root canals without increasing the cost at least as compared with the case of using a light diffusion fiber.
　また、この根管治療器具における光ファイバ束は、光ファイバを束ねたものである。したがって、光ファイバ束は、筆に墨を含ませるが如くに、各光ファイバの間に、液状の光重合シーラーを含ませることができ、光ファイバ束を根管に挿入することで根管の根尖にまで光重合シーラーを供給することができるものとすることが可能である。これにより、この根管治療器具は、光重合シーラーを用いた根管充填の治療をより実用的なものとする。光ファイバ束に含まれる各光ファイバの太さは必ずしも同じである必要はないが、その間に液状の光重合シーラーを含ませることができるような範囲でその太さを選択する。 Moreover, the optical fiber bundle in this root canal treatment instrument is a bundle of optical fibers. Therefore, the optical fiber bundle can include a liquid photopolymerization sealer between each optical fiber, just like a brush contains black ink. By inserting the optical fiber bundle into the root canal, It is possible to supply the photopolymerization sealer to the root apex. Thereby, this root canal treatment instrument makes the treatment of root canal filling using a photopolymerization sealer more practical. The thicknesses of the optical fibers included in the optical fiber bundle are not necessarily the same, but the thickness is selected in such a range that a liquid photopolymerization sealer can be included therebetween.
　そして、何より、この根管治療器具を用いれば、光重合シーラーが硬化した後に、そのまま根管と一体となった光ファイバ束の基端側（及び固定手段）をポストとして用いることができるから、ポストを新たに設ける必要がないし、そのために根管に新たな穴を穿つ必要もない。 And above all, if this root canal treatment instrument is used, after the photopolymerization sealer is cured, the proximal end side (and fixing means) of the optical fiber bundle integrated with the root canal can be used as a post. There is no need to provide a new post, and there is no need to make a new hole in the root canal.
　光ファイバ束に含まれる光ファイバは、長さの異なるものを含んでいる。光ファイバ束の断面形状は必ずしも円形である必要はなく、楕円形等の適宜の形状を採用できる。また、どの長さの光ファイバを何本用いるかは、治療の対象となる根管との関係で適宜選択できる。 The optical fibers included in the optical fiber bundle include those having different lengths. The cross-sectional shape of the optical fiber bundle is not necessarily circular, and an appropriate shape such as an ellipse can be adopted. In addition, how many optical fibers of which length are used can be appropriately selected in relation to the root canal to be treated.
　例えば、前記光ファイバ束は、それを構成する多数の前記光ファイバの中心あるいはその付近に位置するものが一番長くされていてもよい。これにより光ファイバ束はその形状を、先端に向かって細るテーパーを持つ形状にすることが可能である。 For example, as for the said optical fiber bundle, what is located in the center of the many said optical fibers which comprise it, or its vicinity may be made the longest. Thereby, the optical fiber bundle can be formed into a shape having a taper that narrows toward the tip.
　このようにすることで、光ファイバ束をより容易に根管の根尖まで挿入することができるようになる。 By doing so, the optical fiber bundle can be more easily inserted to the root apex of the root canal.
　前記光ファイバ束は、それを構成する多数の前記光ファイバの中心に位置するものが一番長くされ、外縁近くに位置するもの程短くされることで、全体として筆状に構成されていてもよい。 The optical fiber bundle may be configured in a brush shape as a whole, with the one positioned at the center of the plurality of optical fibers constituting the optical fiber bundle being the longest and the one being positioned closer to the outer edge being shortened. .
　光ファイバ束を更に容易に根管の根尖まで挿入することができるようになる。 The optical fiber bundle can be more easily inserted up to the root apex of the root canal.
　上述のように、光は、基本的に、各光ファイバの先端から光重合シーラーに照射される。 As described above, light is basically applied to the photopolymerization sealer from the tip of each optical fiber.
　もっとも、多数の前記光ファイバがいずれも光が通過するコアと前記コアを覆うクラッドを有している場合には、多数の前記光ファイバの少なくとも一部のクラッドの所望の位置に、そこから光が漏れ出すように、前記クラッドが存在しない部分が存在してもよい。 However, in the case where a large number of optical fibers each have a core through which light passes and a clad covering the core, light is emitted from a desired position of at least some of the clads of the optical fibers. There may be a portion where the clad does not exist so as to leak out.
　このようにすることで、少なくとも一部の光ファイバの途中から光重合シーラーに光を照射できるようになるから、光重合シーラーにむらなく光を照射することが容易になる。 By doing so, it becomes possible to irradiate the photopolymerization sealer with light from the middle of at least some of the optical fibers, so that it becomes easy to irradiate the photopolymerization sealer uniformly.
　固定手段は、光ファイバ束中の多数の光ファイバを、多数の光ファイバの基端の集合である光ファイバ束の基端が露出する状態で固定するものであればどのようなものでも良く、例えば接着剤であっても構わない。 The fixing means may be anything as long as it fixes a large number of optical fibers in the optical fiber bundle in a state where the base ends of the optical fiber bundles, which are a set of base ends of the many optical fibers, are exposed, For example, an adhesive may be used.
　例えば、前記固定手段は、繊維でできた布により形成された筒又はリングであり、その内側を通した前記光ファイバ束を内側に圧縮するようになっていてもよい。筒又はリングによりかしめることで、簡単に光ファイバ束の形状を保つことができる。 For example, the fixing means may be a cylinder or a ring formed of a cloth made of fiber, and the optical fiber bundle passing through the inside may be compressed inward. By caulking with a tube or a ring, the shape of the optical fiber bundle can be easily maintained.
　前記固定手段は、繊維でできた紐であり、前記光ファイバ束に巻きついた状態で前記光ファイバ束を内側に圧縮するようになっていてもよい。紐での結束により、簡単に光ファイバ束の形状を保つことができる。 The fixing means may be a string made of fiber, and the optical fiber bundle may be compressed inward while being wound around the optical fiber bundle. By binding with a string, the shape of the optical fiber bundle can be easily maintained.
　上述の筒又はリング、或いは紐を構成する前記繊維は、樹脂繊維、カーボン繊維、又はガラス繊維であってもよい。これらが素材であれば、人体への影響を小さくしやすい。 The above-mentioned fibers constituting the cylinder or ring or string may be resin fibers, carbon fibers, or glass fibers. If these are materials, it is easy to reduce the influence on the human body.
一実施形態による根管治療器具の構成を示す斜視図。The perspective view which shows the structure of the root canal treatment instrument by one Embodiment. 図１に示した根管治療器具の使用状態を示す断面図。Sectional drawing which shows the use condition of the root canal treatment instrument shown in FIG. 図１に示した根管治療器具を用いて根管治療を行った後の状態を示す断面図。Sectional drawing which shows the state after performing root canal treatment using the root canal treatment instrument shown in FIG. 変形例による根管治療器具を示す斜視図。The perspective view which shows the root canal treatment instrument by a modification. 従来の根管治療器具の使用状態を示す図。The figure which shows the use condition of the conventional root canal treatment instrument.
　以下、本発明の好ましい一実施形態を説明する。
根管治療器具は、図１に示したように、光ファイバ束１と、固定具２とを備えている。
　光ファイバ束１は多数の光ファイバ１Ａを束ねたものである。多数の光ファイバ１Ａのそれぞれは、樹脂製で可撓性を有する。光ファイバ１Ａは長さの違うものを含んでいるが、その基端（図１における上側）は揃えられて面一となっている。光ファイバ１Ａの基端の集合が光ファイバ束１の基端１Ｂである。
　多数の光ファイバ１Ａは、筒状の固定具２により内側に圧縮されており、それにより光ファイバ束１はその形状を維持できるようになっている。 Hereinafter, a preferred embodiment of the present invention will be described.
As shown in FIG. 1, the root canal treatment instrument includes an optical fiber bundle 1 and a fixture 2.
The optical fiber bundle 1 is a bundle of many optical fibers 1A. Each of the multiple optical fibers 1A is made of resin and has flexibility. The optical fiber 1A includes ones having different lengths, but their base ends (upper side in FIG. 1) are aligned and flush with each other. A set of proximal ends of the optical fibers 1 </ b> A is a proximal end 1 </ b> B of the optical fiber bundle 1.
A large number of optical fibers 1A are compressed inward by a cylindrical fixture 2 so that the optical fiber bundle 1 can maintain its shape.
　光ファイバ１Ａは皆、汎用の光ファイバに見られるように、図示を省略するが、コアとクラッドを備えている。コアは光ファイバ１Ａ中で光を伝送する部分であり、クラッドはコアを被覆し、全反射等によりコアから光が漏れ出すのを防止する部分である。各光ファイバ１Ａは、その基端に照射された光をその長さ方向に伝送し、その先端から照射するようになっている。もっとも、図示を省略するが、光ファイバ１Ａのうちの一部はその所々でクラッドが除去されていてもよい。この場合には、クラッドが除去された部分からも光ファイバ１Ａの基端に照射された光の一部が漏れ出すことになる。 The optical fiber 1A is provided with a core and a clad as shown in a general-purpose optical fiber, although not shown. The core is a part that transmits light in the optical fiber 1A, and the clad is a part that covers the core and prevents light from leaking out of the core due to total reflection or the like. Each optical fiber 1A transmits the light irradiated to the base end in the length direction, and irradiates from the front end. Of course, although not shown in the drawing, the clad may be removed from some portions of the optical fiber 1A. In this case, a part of the light irradiated to the base end of the optical fiber 1A leaks from the portion where the cladding is removed.
　なお、各光ファイバ１Ａの太さは同じであっても良いし、そうでなくてもよい。また、コアとクラッドの比率等、各光ファイバ１Ａの特性は同じであっても良いし、そうでなくてもよい。 Note that the thickness of each optical fiber 1A may or may not be the same. Moreover, the characteristics of each optical fiber 1A, such as the ratio of the core and the clad, may or may not be the same.
　光ファイバ束１中の各光ファイバ１Ａは、上述のように長さが異なるものを含んでいる。光ファイバ束１はその中心或いはその付近の光ファイバ１Ａが最も長く、全体として先端に向けて細くなるようなテーパーが付されていてもよい。この実施形態における光ファイバ束１では、多数の光ファイバ１Ａの中心に位置するものが一番長くされており、より正確には、多数の光ファイバ１Ａの中心に位置するものが一番長くされ、外縁近くに位置するもの程短くされている。これにより光ファイバ束１は、全体として筆状に構成されている。 Each optical fiber 1A in the optical fiber bundle 1 includes ones having different lengths as described above. The optical fiber bundle 1 may have a taper such that the optical fiber 1A at the center or the vicinity thereof is the longest and becomes narrower toward the tip as a whole. In the optical fiber bundle 1 in this embodiment, the one located at the center of many optical fibers 1A is the longest, and more precisely, the one located at the center of many optical fibers 1A is the longest. The closer to the outer edge, the shorter. Thereby, the optical fiber bundle 1 is configured in a brush shape as a whole.
　固定具２は、上述したように、光ファイバ束１中の光ファイバ１Ａを内側に圧縮することで、光ファイバ束１の形状を維持するものである。固定具２は、繊維でできた布により形成されている。布は織布でも不織布でも構わず、また、編み物であってもよい。布を構成する繊維は、樹脂繊維、カーボン繊維、又はガラス繊維とすることができ、この実施形態ではカーボン繊維となっている。 The fixture 2 maintains the shape of the optical fiber bundle 1 by compressing the optical fiber 1A in the optical fiber bundle 1 inward as described above. The fixture 2 is formed of a cloth made of fibers. The cloth may be woven or non-woven, and may be knitted. The fibers constituting the cloth can be resin fibers, carbon fibers, or glass fibers, and in this embodiment, the fibers are carbon fibers.
　次に、この根管治療器具の使い方を説明する。 Next, I will explain how to use this root canal treatment instrument.
　まず、図示を省略の所定の容器に入った光重合シーラー３に光ファイバ束１の先端を浸し、図２に示したように、筆状の光ファイバ束１の先端側に光重合シーラー３を十分に含ませる。各光ファイバ１Ａは、毛細管現象により光ファイバ束１に光重合シーラーを十分に含ませることができる程度に細い方が好ましく、この実施形態ではそうされている。 First, the tip of the optical fiber bundle 1 is immersed in a photopolymerization sealer 3 contained in a predetermined container (not shown), and the photopolymerization sealer 3 is placed on the tip side of the brush-like optical fiber bundle 1 as shown in FIG. Include enough. Each optical fiber 1A is preferably thin enough to allow the optical fiber bundle 1 to sufficiently contain the photopolymerization sealer by capillary action, and in this embodiment, it is so.
　光重合シーラー３は、一般的なもので良いが、この実施形態では歯質接着性を有するものとなっている。 The photopolymerization sealer 3 may be a general one, but in this embodiment, it has tooth adhesion.
　次いで、光ファイバ束１を図２に示したように歯１００の根管１０１に挿入する。なお、根管１０１は、感染歯髄、壊死歯髄の根管であるのが一般的であるが、象牙質の除去清掃などが適宜行なわれている。光ファイバ束１は先端が細くなっているので、根管１０１の奥の根尖１０２まで容易に届く。 Next, the optical fiber bundle 1 is inserted into the root canal 101 of the tooth 100 as shown in FIG. The root canal 101 is generally a root canal of infected pulp or necrotic pulp, but removal and cleaning of dentin and the like are appropriately performed. Since the optical fiber bundle 1 has a thin tip, it easily reaches the apex 102 at the back of the root canal 101.
　また、光ファイバ束１に含められている光重合シーラー３も、根管１０１の根尖１０２まで容易に届く。 Also, the photopolymerization sealer 3 included in the optical fiber bundle 1 easily reaches the root apex 102 of the root canal 101.
　この状態で、光ファイバ束１に図示を省略する光源を接続する。光源は、光ファイバ束１の基端１Ｂに接続する。光源は、光重合シーラー３を硬化させる波長の光を含む光を照射できるようなものであればどのようなものであっても構わない。 In this state, a light source (not shown) is connected to the optical fiber bundle 1. The light source is connected to the base end 1 </ b> B of the optical fiber bundle 1. The light source may be anything as long as it can irradiate light including light having a wavelength for curing the photopolymerization sealer 3.
　光は、光ファイバ束１を構成する光ファイバ１Ａの先端から光重合シーラー３に照射される。光ファイバ１Ａにクラッドが除去された部分があるのであれば、その部分から漏れ出した光が光重合シーラー３に照射される。これにより、根管１０１の根尖１０２まで、硬化した光重合シーラー３が充填される。またこのとき、根管１０１と、光ファイバ束１とが一体化し、結果として、根管１０１と根管治療器具が一体化する。 The light is applied to the photopolymerization sealer 3 from the tip of the optical fiber 1A constituting the optical fiber bundle 1. If the optical fiber 1A has a portion from which the cladding is removed, the light leaking from the portion is irradiated to the photopolymerization sealer 3. Thus, the cured photopolymerization sealer 3 is filled up to the root apex 102 of the root canal 101. At this time, the root canal 101 and the optical fiber bundle 1 are integrated, and as a result, the root canal 101 and the root canal treatment instrument are integrated.
　この実施形態では、もう一つ根管治療器具を用い、同様の作業を他方の根管１０１に対しても行う。その後、歯冠部髄腔内を支台構築用のコアとしてのレジン４で満たす（図３）。 In this embodiment, another root canal treatment instrument is used, and the same operation is performed on the other root canal 101. Thereafter, the medullary cavity of the crown is filled with the resin 4 as a core for constructing the abutment (FIG. 3).
　このとき、根管治療器具の光ファイバ束１の基端１Ｂ側は、レジン４の表面から露出している。根管治療器具は、ポストとして利用可能である。 At this time, the proximal end 1B side of the optical fiber bundle 1 of the root canal treatment instrument is exposed from the surface of the resin 4. The root canal treatment instrument is available as a post.
　根管治療器具の変形例を図４に示す。 A modification of the root canal treatment instrument is shown in FIG.
　いずれの変形例も、以上の実施形態の根管治療器具と略同一であり、固定具２の構成のみが異なっている。 Any modification is substantially the same as the root canal treatment instrument of the above embodiment, and only the configuration of the fixture 2 is different.
　変形例Ａの根管治療器具の固定具２は複数のリング状とされており、変形例Ｂの根管治療器具の固定具２は複数の筒状とされており、変形例Ｃの根管治療器具の固定具２は光ファイバ束１に巻きつけられた紐とされており、変形例Ｄの根管治療器具の固定具２は筒状とされており、いずれも光ファイバ束１に対して内側方向に力を加えている。 The root canal treatment instrument fixture 2 of Modification A has a plurality of rings, and the root canal therapy instrument fixture 2 of Modification B has a plurality of cylinders. The therapeutic instrument fixture 2 is a string wound around the optical fiber bundle 1, and the root canal therapy instrument fixture 2 of Modification D is cylindrical, both of which are connected to the optical fiber bundle 1. Force inward.
　変形例Ｂの固定具２は、樹脂繊維、カーボン繊維、又はガラス繊維の布でできており、変形例Ａ、Ｃの固定具２は、樹脂繊維、カーボン繊維、又はガラス繊維の紐でできている。変形例Ｄの固定具２は、光重合シーラーを含浸させたグラスファイバーで構成されている。 The fixture 2 of Modification B is made of a resin fiber, carbon fiber, or glass fiber cloth, and the Fixture 2 of Modifications A and C is made of a resin fiber, carbon fiber, or glass fiber string. Yes. The fixture 2 of the modification D is comprised with the glass fiber which impregnated the photopolymerization sealer.
　固定具２の構成は、根管治療器具がポストとして機能するときの強度をより高められるように適宜設計すればよい。 The configuration of the fixture 2 may be appropriately designed so that the strength when the root canal treatment instrument functions as a post can be further increased.
　筺体に取付けたスイッチを用いて容易に左右の選択ができ、側端部に半透明フードを取付けることによって、輝度の大きい照明が必要かつ操作者による入力位置の直視が不可欠な用途にも適用できる。 Left and right can be easily selected using a switch attached to the chassis, and by installing a translucent hood on the side edge, it can be applied to applications where high brightness lighting is required and direct viewing of the input position by the operator is essential. .
　　１　光ファイバ束
　１Ａ　光ファイバ
　１Ｂ　（光ファイバ束の）基端
　　２　固定具
　　３　光重合シーラー
１００　歯
１０１　根管
１０２　根尖 DESCRIPTION OF SYMBOLS 1 Optical fiber bundle 1A Optical fiber 1B Base end (of optical fiber bundle) 2 Fixing tool 3 Photopolymerization sealer 100 Tooth 101 Root canal 102 Root apex

Claims (7)

  1. 　それらの基端が揃うようにされた、長さが異なるものを含みそのそれぞれが可撓性を有する多数の光ファイバを束ねた、全体として可撓性を有する光ファイバ束と、
    　前記光ファイバ束中の多数の前記光ファイバを、多数の前記光ファイバの基端の集合である前記光ファイバ束の基端が露出する状態で固定する固定手段と、
    　を備えてなり、
    　所定波長の光を照射することにより重合して硬化する液状の光重合シーラーを含浸させた状態の前記光ファイバ束を根管内に挿入することで前記根管内に供給した前記光重合シーラーを、前記光ファイバ束の基端から前記光ファイバを通して多数の前記光ファイバの先端から照射される前記所定波長の光で硬化させられるようになっているとともに、
    　前記光重合シーラーが硬化した後に、前記光ファイバ束の基端側をポストとして用いることができるようになっている、
    　根管治療器具。     An optical fiber bundle having flexibility as a whole, in which a plurality of optical fibers, each of which has different lengths, each of which has a different length, are bundled together,
    Fixing means for fixing a large number of the optical fibers in the optical fiber bundle in a state in which the proximal ends of the optical fiber bundles, which are a set of proximal ends of the optical fibers, are exposed;
    With
    The optical polymerization sealer supplied into the root canal by inserting the optical fiber bundle in a state impregnated with a liquid photopolymerization sealer that is polymerized and cured by irradiation with light of a predetermined wavelength. The optical fiber bundle is hardened with light of the predetermined wavelength irradiated from the distal ends of a large number of optical fibers through the optical fiber from the proximal end of the optical fiber bundle,
    After the photopolymerization sealer is cured, the base end side of the optical fiber bundle can be used as a post.
    Root canal treatment instrument.
  2. 　前記光ファイバ束は、それを構成する多数の前記光ファイバの中心或いはその付近に位置するものが一番長くされている、
    　請求項１記載の根管治療器具。     The optical fiber bundle has the longest one located at or near the center of the many optical fibers constituting the optical fiber bundle.
    The root canal treatment device according to claim 1.
  3. 　前記光ファイバ束は、それを構成する多数の前記光ファイバの中心に位置するものが一番長くされ、外縁近くに位置するもの程短くされることで、全体として筆状に構成されている、
    　請求項１記載の根管治療器具。     The optical fiber bundle is configured in a brush shape as a whole, with the one positioned at the center of a large number of optical fibers constituting the optical fiber bundle being the longest and the one positioned near the outer edge being shortened.
    The root canal treatment device according to claim 1.
  4. 　多数の前記光ファイバはいずれも、光が通過するコアと前記コアを覆うクラッドを有しており、
    　多数の前記光ファイバの少なくとも一部のクラッドの所望の位置に、そこから光が漏れ出すように、前記クラッドが存在しない部分が存在する、
    　請求項１記載の根管治療器具。     Each of the many optical fibers has a core through which light passes and a clad covering the core.
    There is a portion where the cladding does not exist so that light leaks from a desired position of at least a portion of the cladding of the plurality of optical fibers.
    The root canal treatment device according to claim 1.
  5. 　前記固定手段は、繊維でできた布により形成された筒又はリングであり、その内側を通した前記光ファイバ束を内側に圧縮するようになっている、
    　請求項１記載の根管治療器具。     The fixing means is a tube or a ring formed of a cloth made of fibers, and compresses the optical fiber bundle passing through the inside thereof to the inside.
    The root canal treatment device according to claim 1.
  6. 　前記固定手段は、繊維でできた紐であり、前記光ファイバ束に巻きついた状態で前記光ファイバ束を内側に圧縮するようになっている、
    　請求項１記載の根管治療器具。     The fixing means is a string made of fiber, and compresses the optical fiber bundle inward in a state of being wound around the optical fiber bundle.
    The root canal treatment device according to claim 1.
  7. 　前記繊維は、樹脂繊維、カーボン繊維、又はガラス繊維である、
    　請求項５又は６記載の根管治療器具。     The fibers are resin fibers, carbon fibers, or glass fibers.
    The root canal treatment instrument according to claim 5 or 6.
PCT/JP2013/050165 2012-02-29 2013-01-09 Root canal treatment instrument WO2013128952A1 (en)

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