JP2017127583A - Pulp core communicated with pulp extracted part - Google Patents

Pulp core communicated with pulp extracted part Download PDF

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JP2017127583A
JP2017127583A JP2016010775A JP2016010775A JP2017127583A JP 2017127583 A JP2017127583 A JP 2017127583A JP 2016010775 A JP2016010775 A JP 2016010775A JP 2016010775 A JP2016010775 A JP 2016010775A JP 2017127583 A JP2017127583 A JP 2017127583A
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pulp
core
root
dental
tooth
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芳生 藤原
Yoshio Fujiwara
芳生 藤原
真喜子 藤原
Makiko Fujiwara
真喜子 藤原
康次郎 秦
Kojiro Hata
康次郎 秦
洋祐 松尾
Yosuke Matsuo
洋祐 松尾
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Ikashika Solutions Co Ltd
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Ikashika Solutions Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To easily supplement a lost tooth of a root part when a tooth part is lost due to dental caries or the like.SOLUTION: A pulp of a tooth is extracted, a crown part 4 thereof is cut, a pulp core 5 corresponding to the crown part 4 is formed via a denture mold plaster figure, and a pulp-extracted-part communication hole 7 is provided on the pulp core 5, with it communicated with a pulp extracted part 6 of the root part 2, so as to be filled with a required filler 8. Further, pulp-extracted-part communication holes 7 can be opened in the pulp core 5 corresponding to branched root parts 2 respectively, and preferably, reinforcement posts 9 are inserted into the pulp-extracted-part communication holes 7 of the pulp core 5 so as to be reinforced.SELECTED DRAWING: Figure 5

Description

本発明は、歯科分野における抜髄部連通の歯髄コアに関するものである。   The present invention relates to a pulp core having a pulp extraction section in the dental field.

従来、虫歯等で歯が欠損したり、歯の一部が喪失した場合、特開２００４−６５５７９号公報や特開２０１１−７８４８９号公報のように歯根部に支台を形成し、欠損したり、喪失した歯部に対応して補完する補綴物を歯型石膏模型で成形し、これを歯科用接着剤で支台に固定して装着する治療が行なわれている。   Conventionally, when a tooth is lost due to caries or the like, or when a part of the tooth is lost, an abutment is formed at the root of the tooth as in JP-A-2004-65579 and JP-A-2011-78489. A treatment is performed in which a prosthesis that complements a lost tooth portion is formed with a dental plaster model, and is fixed to a support with a dental adhesive.

特開２００４−６５５７９号公報JP 2004-65579 A 特開２０１１−７８４８９号公報JP2011-78489A

しかし、歯冠部がなくて、歯根上部を介して補綴物を接着固定する場合、歯根部に補強用ポストを充填材を介して植設し、その歯根部に支台を築盛して支台を台錐形状に削り出し、歯型石膏模型で成形した補綴物を接着して装着しているものであった。   However, when there is no crown part and the prosthesis is bonded and fixed via the upper part of the root, a reinforcing post is implanted in the root part via a filler, and an abutment is built up on the root part. Was cut into a trapezoidal shape, and a prosthesis molded with a dental plaster model was attached and attached.

これらの治療は、手間と時間がかかるもので、口腔内でレジンコアすべてを作ってしまうことも実施されているが、歯冠部の形を作るのが非常に難しいものであるとともに、臼歯等のように下部が分岐した歯根の抜髄部の歯髄部には、レジンコアによる一体成形物を挿入することができなく、歯髄部にアンダーカット部が生じることが避けられなかった。   These treatments are time consuming and time consuming, and it is also practiced to make all of the resin core in the oral cavity, but it is very difficult to make the shape of the crown part, Thus, it was inevitable that an integrally molded product made of a resin core could be inserted into the pulp portion of the pulp extraction portion of the root where the lower portion was branched, and an undercut portion was generated in the pulp portion.

そのため、歯冠部がなくなった場合に、容易に歯根上部に歯牙欠損部を補綴することが課題であった。   For this reason, when the crown portion disappears, it is a problem to easily prosthesis the tooth defect portion on the upper root of the tooth.

本発明は、上記のような点に鑑みたもので、上記の課題を解決するために、歯を抜髄してその歯冠部を切断し、該歯冠部に対応する歯髄コアを歯型石膏模型を介して形成するとともに、歯根部の抜髄部に連通して所要の充填材を充填可能に抜髄部連通孔を上記歯髄コアに設けたことを特徴とする抜髄部連通の歯髄コアを提供するにある。   The present invention has been made in view of the above points, and in order to solve the above-mentioned problems, the tooth is extracted, the crown portion is cut, and the pulp core corresponding to the crown portion is formed into a dental plaster. A pulp core communicating with the pulp part is provided, wherein the pulp core communicates with the pulp part of the root part and is provided with a pulp part communication hole in the pulp core so as to be filled with a required filler. It is in.

また、分岐した歯根部の抜髄部に対応して歯髄コアに抜髄部連通孔をそれぞれ開口したことを特徴とする抜髄部連通の歯髄コアを提供するにある。   Further, another object of the present invention is to provide a pulp core with a pulp extraction section, wherein a pulp core communication hole is opened in the pulp core corresponding to the pulp extraction section of the branched root portion.

さらに、歯髄コアの抜髄部連通孔に補強用ポストを挿入するようにしたことを特徴とする抜髄部連通の歯髄コアを提供するにある。   Furthermore, another object of the present invention is to provide a pulp core with a pulp extraction section, wherein a reinforcing post is inserted into the pulp extraction section communication hole of the pulp core.

本発明にあっては、特許請求の範囲の請求項１のように、歯を抜髄してその歯冠部を切断し、該歯冠部に対応する歯髄コアを歯型石膏模型を介して形成するとともに、歯根部の抜髄部に連通して所要の充填材を充填可能に抜髄部連通孔を上記歯髄コアに設けたことによって、歯冠部がなくなった場合、その歯冠部に対応して歯型石膏模型を介して歯髄コアを形成して、その歯髄コアの抜髄部連通孔から充填材を注入して歯根部の抜髄部に充填して歯髄コアと一体に形成でき、容易に歯根上部に歯牙欠損部を補綴することができる。   In the present invention, as in claim 1 of the claims, the tooth is extracted and the crown portion is cut, and the pulp core corresponding to the crown portion is formed through the dental plaster model. In addition, by providing the pulp core communicating hole in the pulp core so that it can be filled with the required filling material by communicating with the pulp extraction portion of the root portion, if the crown portion disappears, it corresponds to the crown portion A dental pulp core is formed via a dental plaster model, and a filling material is injected through the pulp core communication hole of the pulp core to fill the pulp core of the dental root portion to be formed integrally with the pulp core. Tooth prosthesis can be prosthetic.

また、請求項２のように、分岐した歯根部の抜髄部に対応して歯髄コアに抜髄部連通孔をそれぞれ開口したことによって、臼歯等の分岐した歯根部の抜髄部に歯髄コアの抜髄部連通孔からそれぞれ充填材を注入して歯根部の抜髄部に充填して歯髄コアと一体的に形成でき、容易に歯根部に歯牙欠損部を補綴することができる。   Further, according to the second aspect of the present invention, a pulp core communicating hole is opened in the pulp core corresponding to the pulp extraction portion of the branched root portion, so that the pulp core portion of the pulp core is formed in the pulp extraction portion of the branched root portion such as a molar. Each filling material is injected from the communication hole and filled into the pulp portion of the root portion to be formed integrally with the pulp core, and the tooth defect portion can be easily prosthetic in the root portion.

さらに、請求項３のように、歯髄コアの抜髄部連通孔に補強用ポストを挿入するようにしたことによって、歯根部の抜髄部に補強用ポストを挿入して補強することができ、歯髄コアを歯根部に強固に植設することができる。   Further, as described in claim 3, by inserting the reinforcing post into the pulp extraction hole communicating hole of the dental pulp core, the reinforcing post can be inserted into the pulp extracting part of the dental root to reinforce the dental pulp core. Can be firmly planted in the tooth root.

本発明の対象とする歯の横断面図、A cross-sectional view of the teeth of the present invention, 同上の一実施例の歯髄コア部の説明用の横断面図、Cross-sectional view for explaining the pulp core part of one embodiment of the same as above, 同上の歯髄コアを装着して充填材を充填した説明用の横断面図、Cross-sectional view for explanation with the same pulp core as above and filled with filler, 同上の他の実施例の歯髄コア部の説明用の横断面図、The transverse cross section for explanation of the pulp core part of other examples same as the above, 同上の歯髄コアを装着して充填材を充填した説明用の横断面図、Cross-sectional view for explanation with the same pulp core as above and filled with filler,

本発明の抜髄部連通の歯髄コアは、歯を抜髄してその歯冠部を切断し、該歯冠部に対応する歯髄コアを歯型石膏模型を介して形成するとともに、歯根部の抜髄部に連通して所要の充填材を充填可能に抜髄部連通孔を上記歯髄コアに設けたことを特徴としている。   The pulp core of the present invention is connected to the pulp core by cutting the tooth and cutting the crown portion, and forming a pulp core corresponding to the crown portion through a dental plaster model, and the pulp portion of the root portion The pulp core communication hole is provided in the dental pulp core so as to be able to be filled with a required filler.

臼歯等の歯１は、図１のように前歯、犬歯、臼歯に適用できるもので、図２、図３のように虫歯等で歯牙部を欠損した歯について、歯根部２の歯髄３を抜髄し、歯冠部４を切断して、歯根部２の上面に歯髄コア５を補綴して治療するものである。   The teeth 1 such as molars can be applied to the front teeth, canines, and molars as shown in FIG. 1, and the pulp 3 of the root part 2 is extracted from the tooth having a tooth portion lost due to caries or the like as shown in FIGS. Then, the crown 4 is cut and the dental pulp core 5 is prosthetically repaired on the upper surface of the root 2.

歯根部２は、抜髄して図２のように水平状等に適宜に切断し、その欠損した該歯冠部４に対応して歯型石膏模型を介して所要の歯科用の硬質レジン等で歯髄コア５を成形するようにしている。   The root portion 2 is extracted and appropriately cut into a horizontal shape as shown in FIG. 2, and the required dental hard resin or the like is passed through a dental plaster model corresponding to the missing crown portion 4. The pulp core 5 is formed.

この歯髄コア５は、図２のように歯根部２に装着できるように歯根部２の抜髄した抜髄部６に連通する所要径の抜髄部連通孔７を歯髄コア５に上面から下面にわたって貫通状態に開口し、歯髄コア５の抜髄部連通孔７から所要の歯科用の充填材８を歯根部２の抜髄部６に注入して充填して装着できるようにしている。なお、歯髄コア５を挿入する前に所要量の歯科用の充填材８を注入しておくことができる。   This pulp core 5 is penetrated through the pulp core 5 from the upper surface to the lower surface through the pulp core communication hole 7 having a required diameter communicating with the pulp extraction section 6 from which the pulp root 2 has been extracted so that it can be attached to the root section 2 as shown in FIG. The required dental filler 8 is injected into the pulp extraction part 6 of the tooth root part 2 from the pulp extraction part communication hole 7 of the dental pulp core 5 so that it can be mounted. It should be noted that a required amount of dental filler 8 can be injected before inserting the pulp core 5.

また、歯髄コア５の抜髄部連通孔７から補強用ポスト９を挿入するようにし、図３のように歯根部２の抜髄部６に所定径のファイバーやセラミックス等の補強用ポスト９を一体的に挿着し、歯髄コア５を歯根部２の上に強固に植設するようにしている。   Further, the reinforcing post 9 is inserted from the extraction portion communication hole 7 of the pulp core 5, and the reinforcing post 9 made of fiber or ceramics having a predetermined diameter is integrated with the extraction portion 6 of the root portion 2 as shown in FIG. The dental pulp core 5 is firmly implanted on the root portion 2.

臼歯のような歯根部２が分岐したものについては、図４のように分岐した歯髄部３の抜髄部６に対応して下部を分岐した歯髄コア５に抜髄部連通孔７をそれぞれ開口して、分岐した歯根部２の抜髄部６に歯髄コア５の抜髄部連通孔７からそれぞれ歯科用の充填材８を注入して歯根部２の抜髄部６に充填するようにししいる。   For the one having a branched root portion 2 such as a molar, a pulp extraction hole 7 is opened in the pulp core 5 branched at the lower portion corresponding to the pulp extraction portion 6 of the branched pulp portion 3 as shown in FIG. The dental filling material 8 is injected into the pulp extraction part 6 of the branched root part 2 from the pulp part communication hole 7 of the dental pulp core 5 to fill the pulp extraction part 6 of the tooth root part 2.

臼歯のような歯根部２が分岐したものについて、図４のように歯髄コア５の下部を抜髄部６に挿入可能に所要の長さの分岐状態とし、分岐した歯髄部３の抜髄部連通孔７からそれぞれ歯科用の充填材８を注入して歯根部２の抜髄部６に充填するようにして歯髄部６にアンダーカット部が生じないようにしている。そして、上記と同様に図５のようにファイバーやセラミックス等の補強用ポスト８を挿入し、歯髄コア５と一体的に形成して歯根部２に歯牙欠損部を補綴するようにしている。   For the one having a branched root portion 2 such as a molar tooth, the lower portion of the pulp core 5 is made into a branching state of a required length so that it can be inserted into the pulp extraction portion 6 as shown in FIG. The dental filling material 8 is injected from 7 to fill the pulp portion 6 of the root portion 2 so that an undercut portion does not occur in the pulp portion 6. In the same manner as described above, reinforcing posts 8 such as fibers and ceramics are inserted as shown in FIG. 5 and formed integrally with the dental pulp core 5 so that the tooth defect portion is prosthetic in the root portion 2.

なお、歯根部２の上面を切頭台錐形状の凸状に突き出して所要径に切削し、歯髄コア２の下面部を帽子状の凹状に凹ませて所要径に切削し、歯根部２の上面の切頭台錐形状の凸状部に歯髄コア２の下面部の凹状部を嵌合して補綴するなど、本発明の上記した趣旨にもとずいて適宜に実施することができるものである。   In addition, the upper surface of the tooth root portion 2 protrudes into a truncated cone-shaped convex shape and is cut to a required diameter, the lower surface portion of the pulp core 2 is recessed into a hat-like concave shape, and is cut to the required diameter. For example, the concave portion of the lower surface portion of the pulp core 2 can be fitted to the convex portion of the truncated cone shape on the upper surface to perform prosthesis. is there.

図２、図３は、本発明の一実施例を示すものである。前歯等の歯髄コア５は、図のように虫歯で歯牙部が欠損したもので、その歯根部２の歯髄３を抜髄し、歯冠部４を水平状に切断し、欠損した該歯冠部４に対応して歯型石膏模型を介して歯科用の硬質レジンで歯髄コア５を成形し、歯根部２の上面に歯牙欠損部を歯髄コア５で補綴して治療するようにしたものである。   2 and 3 show an embodiment of the present invention. As shown in the figure, the dental pulp core 5 such as an anterior tooth has a tooth portion missing due to caries, the pulp 3 of the root portion 2 is extracted, the crown portion 4 is cut horizontally, and the missing crown portion The dental pulp core 5 is formed with a dental hard resin through a dental plaster model corresponding to No. 4, and the dental defect portion is prosthetically treated with the dental pulp core 5 on the upper surface of the root portion 2 to be treated. .

歯髄コア５は、図２のように歯根部２の抜髄した抜髄部６に連通する所要径の抜髄部連通孔７を歯髄コア５に上面から下面にわたって貫通状態に開口していて、歯髄コア５の抜髄部連通孔７から歯科用の充填材８を歯根部２の抜髄部６に注入して充填するようにしている。   As shown in FIG. 2, the pulp core 5 has a pulp extraction hole 7 having a required diameter communicating with the pulp extraction section 6 extracted from the root 2, and is opened in a penetrating manner from the upper surface to the lower surface. The dental filling material 8 is injected into the pulp removal portion 6 of the root portion 2 from the pulp removal portion communication hole 7 and filled.

虫歯で欠損した歯１を治療するには、図２のようにその歯根部２の歯髄３を抜髄し、上記歯冠部４を水平状に切断し、欠損した該歯冠部４に対応して歯型石膏模型を介して抜髄部６に連通する所要径の抜髄部連通孔７を貫通する歯科用の歯髄コア５を硬質レジンで成形する。   In order to treat a tooth 1 that is missing due to caries, the pulp 3 of the root portion 2 is extracted as shown in FIG. 2 and the crown 4 is cut horizontally to correspond to the missing crown 4. Then, a dental pulp core 5 that penetrates through a pulp extraction hole 7 having a required diameter that communicates with the pulp extraction section 6 through a dental plaster model is formed of a hard resin.

そして、図３のように歯根部２に歯髄コア５の下部を挿入して、歯根部２の上面に歯髄コア５を接合し、歯髄コア５の抜髄部連通孔７から歯科用の充填材８を歯根部２の抜髄部６にインジェクターで注入し、歯髄コア５の抜髄部連通孔７からフアイバーポストの補強用ポスト９を挿入して所定長さに切断し、歯根部２の抜髄部６にフアイバーポストの補強用ポスト９を一体的に挿着し、歯髄コア５を歯冠部４に強固に植設する。   Then, as shown in FIG. 3, the lower portion of the pulp core 5 is inserted into the root portion 2, the pulp core 5 is joined to the upper surface of the root portion 2, and the dental filling material 8 is inserted through the pulp extraction hole 7 of the pulp core 5. Is injected into the pulp extraction part 6 of the root part 2 with an injector, a reinforcing post 9 of a fiber post is inserted through the pulp extraction hole 7 of the pulp core 5 and cut to a predetermined length, and the pulp extraction part 6 of the tooth root part 2 is cut. The reinforcing post 9 of the fiber post is integrally inserted, and the pulp core 5 is firmly implanted in the crown portion 4.

このように歯髄コア５を歯冠部４に植設し、歯冠部４に所要のクラウンの歯冠補綴物１０を被覆して治療を終えるものである。そのため、歯根部がなくなった歯１に対して、歯髄コア５の抜髄部連通孔７から充填材８を注入して歯根部２の抜髄部６に充填して歯髄コア５と一体的に形成でき、容易に歯根部２を補綴することができる。   In this way, the pulp core 5 is implanted in the crown portion 4 and the crown portion 4 is covered with the crown prosthesis 10 of the required crown to finish the treatment. Therefore, the filling material 8 can be injected into the tooth 1 having no root portion from the pulp portion communication hole 7 of the pulp core 5 and filled into the pulp portion 6 of the root portion 2 to be formed integrally with the pulp core 5. The root portion 2 can be easily prosthetic.

図４、図５は、本発明の他の実施例を示すものである。臼歯等の歯髄コア５は、図４のように歯根部２が分岐したもので、歯髄コア５の下部を抜髄部６に挿入可能に所要の長さの分岐状態とし、分岐した歯髄部３の抜髄部連通孔７からそれぞれ歯科用の充填材８を注入して歯根部２の抜髄部６に充填するようにしたものである。   4 and 5 show another embodiment of the present invention. The dental pulp core 5 such as a molar is obtained by branching the root portion 2 as shown in FIG. 4. The lower portion of the dental pulp core 5 is brought into a branching state of a required length so that it can be inserted into the pulp extraction portion 6. The dental filling material 8 is injected from the extraction part communicating hole 7 to fill the extraction part 6 of the root part 2.

本実施例にあっても、図５のように歯根部２の分岐部に歯髄コア５の所定長さとした下部を挿入して、歯根部２の上面に歯髄コア５を接合し、歯髄コア５の抜髄部連通孔７から歯科用の充填材８を歯根部２の抜髄部６にインジェクターでそれぞれ注入し、歯髄コア５の抜髄部連通孔７からフアイバーポストの補強用ポスト９を挿入し、歯根部２の抜髄部６にフアイバーポストの補強用ポスト９を一体的に挿着して充填状態とし、歯髄コア５を歯根部２に強固に植設することができる。   Even in the present embodiment, as shown in FIG. 5, the lower part of the dental pulp core 5 having a predetermined length is inserted into the branch part of the dental root part 2, and the dental pulp core 5 is joined to the upper surface of the dental root part 2. A dental filler 8 is injected into the pulp extraction part 6 of the root 2 from the pulp extraction hole 7 with an injector, and a fiber post reinforcing post 9 is inserted through the pulp core communication hole 7 of the dental pulp core 5. A fiber post reinforcing post 9 is integrally inserted into the pulp extraction portion 6 of the portion 2 to be in a filled state, and the pulp core 5 can be firmly implanted in the root portion 2.

そのため、歯根部２の分岐部に歯髄コア５の下部を挿入して、分岐した歯髄部３にそれぞれ歯科用の充填材８を注入して抜髄部６に充填でき、歯髄部６にアンダーカット部が生じることなく、歯髄コア５と一体的に形成して歯根部２の歯牙欠損部を補綴することができる。   Therefore, the lower part of the pulp core 5 is inserted into the branch portion of the root portion 2, and the dental filling material 8 can be injected into the branched pulp portion 3 to fill the pulp extraction portion 6. The undercut portion is added to the pulp portion 6. Therefore, the tooth defect portion of the root portion 2 can be prosthetically formed integrally with the pulp core 5.

なお、歯根部２の上面を切頭台錐形状の凸状に突き出して切削し、歯髄コア２の下面部を帽子状の凹状に凹ませて切削し、歯根部２の上面の切頭台錐形状の凸状部に歯髄コア２の下面部の凹状部を嵌合して補綴するなど、本発明の上記した趣旨にもとずいて適宜な変形態様を実施することができる。   In addition, the upper surface of the tooth root portion 2 is protruded and cut into a truncated cone-shaped convex shape, and the lower surface portion of the pulp core 2 is cut into a cap-shaped concave shape, and the truncated cone cone on the upper surface of the tooth root portion 2 is cut. Appropriate modifications can be implemented based on the above-described gist of the present invention, such as fitting a concave portion of the lower surface portion of the pulp core 2 to the convex portion of the shape and performing prosthesis.

本発明は、歯科分野における虫歯等で歯牙部が欠損したり、歯の一部が喪失した歯の治療に適用できるものである。   The present invention can be applied to treatment of a tooth in which a tooth portion is lost due to caries or the like in the dental field or a part of the tooth is lost.

１…歯 ２…歯根部 ３…歯髄 ４…歯冠部 ５…歯髄コア ６…抜髄部 ７…抜髄部連通孔 ８…充填材 ９…補強用ポスト   DESCRIPTION OF SYMBOLS 1 ... Teeth 2 ... Root part 3 ... Dental pulp 4 ... Crown part 5 ... Pulp core 6 ... Spinal cord part 7 ... Spinal cord part communicating hole 8 ... Filler 9 ... Reinforcing post

Claims (3)

歯を抜髄してその歯冠部を切断し、該歯冠部に対応する歯髄コアを歯型石膏模型を介して形成するとともに、歯根部の抜髄部に連通して所要の充填材を充填可能に抜髄部連通孔を上記歯髄コアに設けたことを特徴とする抜髄部連通の歯髄コア。   A tooth pulp is extracted and the crown portion is cut, and a pulp core corresponding to the crown portion is formed through a dental plaster model, and the required filling material can be filled by communicating with the root extraction portion. A pulp core communicating with the pulp part, wherein a pulp hole communicating hole is provided in the pulp core. 分岐した歯根部の抜髄部に対応して歯髄コアに抜髄部連通孔をそれぞれ開口したことを特徴とする請求項１に記載の抜髄部連通の歯髄コア。   2. The pulp core with a pulp extraction part according to claim 1, wherein a pulp core communication hole is opened in the pulp core corresponding to the pulp extraction part of the branched root part. 歯髄コアの抜髄部連通孔に補強用ポストを挿入するようにしたことを特徴とする請求項１または２に記載の抜髄部連通の歯髄コア。   3. The pulp core for communicating with the pulp portion according to claim 1, wherein a reinforcing post is inserted into the pulp portion communication hole of the pulp core.
JP2016010775A 2016-01-22 2016-01-22 Pulp core communicated with pulp extracted part Pending JP2017127583A (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS512288A (en) * 1973-12-27 1976-01-09 Nebiire Korubetsuto Andoryuu Hanishikano toritsukeru hoho
US4543065A (en) * 1983-12-01 1985-09-24 Bushway Geoffrey C Pre-made reinforcement device
US20130209965A1 (en) * 2012-02-10 2013-08-15 3Shape A/S Virtually designing a post and core restoration using a digital 3d shape

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS512288A (en) * 1973-12-27 1976-01-09 Nebiire Korubetsuto Andoryuu Hanishikano toritsukeru hoho
US4543065A (en) * 1983-12-01 1985-09-24 Bushway Geoffrey C Pre-made reinforcement device
US20130209965A1 (en) * 2012-02-10 2013-08-15 3Shape A/S Virtually designing a post and core restoration using a digital 3d shape

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Title
福島 俊士, 外3名: "レジンコアとファイバーポストを再考する", GC CIRCLE, JPN6020018456, 2008, JP, pages 4 - 10, ISSN: 0004393455 *

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