JP2003116883A - Integrated structure composed of root canal filler and dowel supporting base - Google Patents
Integrated structure composed of root canal filler and dowel supporting baseInfo
- Publication number
- JP2003116883A JP2003116883A JP2001315001A JP2001315001A JP2003116883A JP 2003116883 A JP2003116883 A JP 2003116883A JP 2001315001 A JP2001315001 A JP 2001315001A JP 2001315001 A JP2001315001 A JP 2001315001A JP 2003116883 A JP2003116883 A JP 2003116883A
- Authority
- JP
- Japan
- Prior art keywords
- root canal
- dowel
- abutment
- integrated structure
- filling material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 210000004262 dental pulp cavity Anatomy 0.000 title claims abstract description 110
- 239000000945 filler Substances 0.000 title abstract description 7
- 229910001000 nickel titanium Inorganic materials 0.000 claims abstract description 15
- 239000004840 adhesive resin Substances 0.000 claims abstract description 14
- 229920006223 adhesive resin Polymers 0.000 claims abstract description 14
- 230000007547 defect Effects 0.000 claims abstract description 6
- 239000002631 root canal filling material Substances 0.000 claims description 32
- 210000003205 muscle Anatomy 0.000 claims description 13
- 229920005989 resin Polymers 0.000 abstract description 8
- 239000011347 resin Substances 0.000 abstract description 8
- 229910045601 alloy Inorganic materials 0.000 abstract 1
- 239000000956 alloy Substances 0.000 abstract 1
- 239000004568 cement Substances 0.000 description 16
- 238000010276 construction Methods 0.000 description 10
- 210000004268 dentin Anatomy 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000007789 sealing Methods 0.000 description 6
- 210000001114 tooth apex Anatomy 0.000 description 6
- 239000003178 glass ionomer cement Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000004659 sterilization and disinfection Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- 230000001954 sterilising effect Effects 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- 210000001519 tissue Anatomy 0.000 description 3
- 210000005239 tubule Anatomy 0.000 description 3
- 239000002763 biomedical alloy Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000000805 composite resin Substances 0.000 description 2
- 210000004489 deciduous teeth Anatomy 0.000 description 2
- 208000002925 dental caries Diseases 0.000 description 2
- 239000003479 dental cement Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 208000015181 infectious disease Diseases 0.000 description 2
- 231100000956 nontoxicity Toxicity 0.000 description 2
- 230000000399 orthopedic effect Effects 0.000 description 2
- 230000003239 periodontal effect Effects 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 210000004746 tooth root Anatomy 0.000 description 2
- 231100000419 toxicity Toxicity 0.000 description 2
- 230000001988 toxicity Effects 0.000 description 2
- 208000016192 Demyelinating disease Diseases 0.000 description 1
- 206010012305 Demyelination Diseases 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- 239000000899 Gutta-Percha Substances 0.000 description 1
- 240000000342 Palaquium gutta Species 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 235000005733 Raphanus sativus var niger Nutrition 0.000 description 1
- 244000155437 Raphanus sativus var. niger Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 206010062544 Tooth fracture Diseases 0.000 description 1
- HZEWFHLRYVTOIW-UHFFFAOYSA-N [Ti].[Ni] Chemical compound [Ti].[Ni] HZEWFHLRYVTOIW-UHFFFAOYSA-N 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 239000012620 biological material Substances 0.000 description 1
- 230000008512 biological response Effects 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 239000002639 bone cement Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 210000003298 dental enamel Anatomy 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229920000588 gutta-percha Polymers 0.000 description 1
- 210000004394 hip joint Anatomy 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000036512 infertility Effects 0.000 description 1
- 229920000554 ionomer Polymers 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 210000000214 mouth Anatomy 0.000 description 1
- 210000005036 nerve Anatomy 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 201000001245 periodontitis Diseases 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000011268 retreatment Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 210000003699 striated muscle Anatomy 0.000 description 1
- 238000013268 sustained release Methods 0.000 description 1
- 239000012730 sustained-release form Substances 0.000 description 1
- 210000000332 tooth crown Anatomy 0.000 description 1
- 229940099259 vaseline Drugs 0.000 description 1
Landscapes
- Dental Prosthetics (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は歯髄摘出（抜髄）後
に空洞(死腔）となった根管を充填する根管充填材と歯
冠欠損補綴の支台となる合釘を連続させた一体化構造物
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous root canal filling material for filling a root canal that has become a cavity (dead space) after pulpectomy (extraction) and a dowel to serve as an abutment for a crown prosthesis. Relating to chemical structures.
【０００２】[0002]
【従来技術】歯は口腔に萌出している歯冠と歯槽骨に埋
入している歯根からなっている。その組織は、エナメル
質、象牙質、セメント質および歯髄を含む根管からな
る。根管の先端（根尖）には根尖孔がある。歯髄は血
管、神経などからなり，根管壁の象牙細管や根尖孔を通
じて歯周組織と連絡している。2. Description of the Related Art A tooth is composed of a crown that has emerged in the oral cavity and a root that is embedded in the alveolar bone. The tissue consists of root canals including enamel, dentin, cementum and pulp. The tip (root apex) of the root canal has a root apex. The pulp consists of blood vessels and nerves, and communicates with periodontal tissues through the dentinal tubules and apical foramen of the root canal wall.
【０００３】う触などにより歯冠が大きく崩壊すると感
染が根管の歯髄に及び、歯髄の摘出が必要となり、根管
は空洞（死腔）となる。この空洞は消毒、清掃の後に根
管充填材により充填される。根管充填材は異物であり、
低毒性、低生体反応性および可滅菌性という生体材料と
しての条件を満足する材料でなければならない。同時に
根管は個人、歯の種類により太さ、長さ、形状に違いが
あり、抜髄と根管充填に際してはそれらに適応した根管
治療機器と根管充填材が用いられる（この根管治療機器
と根管充填材のサイズ、形状はＩＳＯ規格により規定さ
れている）。細く、湾曲した根管もあるため、根管充填
材はそれに耐える物性が要求される。根管充填材と根管
壁の隙間はシーラーと呼ばれる根管セメントにより充填
される。When the crown is largely disintegrated due to caries or the like, the infection reaches the pulp of the root canal, and it is necessary to remove the pulp, and the root canal becomes a cavity (dead space). This cavity is filled with root canal filling material after disinfection and cleaning. The root canal filling material is a foreign substance,
It must be a material that satisfies the conditions as a biomaterial such as low toxicity, low bioreactivity, and sterility. At the same time, the root canal has different thickness, length, and shape depending on the individual and the type of tooth. When extracting the pulp and filling the root canal, a root canal treatment device and a root canal filling material suitable for them are used. The size and shape of the device and the root canal filling material are specified by the ISO standard). Since some root canals are thin and curved, the root canal filling material is required to have physical properties capable of withstanding it. The gap between the root canal filling material and the root canal wall is filled with a root canal cement called a sealer.
【０００４】根管充填後に、欠損した歯冠が人工歯冠に
より補綴される。人工歯冠はその支持、固定を根管に求
めているために、その支台となる合釘が作成され、それ
は歯根内部に挿入、固定される。この合釘支台を根管に
挿入するために、根管充填された根管の上部２／３の根
管充填材は除去され、根管は再拡大、形成される。この
再拡大された根管部は精密に印象され、鋳造された合釘
支台が挿入されセメントにより固定され、そこに人工歯
冠が装着される。再拡大された根管に既成の合釘支台が
挿入、固定される場合もある。従来の歯冠継続歯（差し
歯）を図４に示す。図４において、歯冠継続歯（差し
歯）は根管充填材７と合釘支台６とによって構成されて
いる構造物の合釘支台６に合着材８を介して人工歯冠５
が嵌合している。合釘支台６及び根管充填材７は歯根９
の中に挿入され、これらの間隙に合着材８が用いられて
いる。根管充填にはガッタパーチャ製、銀製、あるいは
ポリプロピレン製のポイント及びシーラーが主に用いら
れている。いずれも合釘の役割は持たされていない。合
釘は根管の上２／３まで挿入固定することになっている
が、根管充填としての概念、機能は全く持っていない。After filling the root canal, the missing crown is prosthesis with an artificial crown. Since the artificial crown requires the root canal to support and fix it, a dowel is formed as an abutment, and it is inserted and fixed inside the tooth root. In order to insert this dowel abutment into the root canal, the root canal filling material in the upper 2/3 of the root canal-filled root canal is removed, and the root canal is re-expanded and formed. The re-enlarged root canal is precisely impressed, the cast dowel abutment is inserted and fixed with cement, and the artificial dental crown is attached thereto. A prefabricated dowel abutment may be inserted and fixed in the re-expanded root canal. FIG. 4 shows a conventional continuous tooth (deciduous tooth). In FIG. 4, the continuous tooth crown (deciduous tooth) is an artificial dental crown 5 via a bonding material 8 on a compound nail abutment 6 of a structure composed of a root canal filling material 7 and a nail abutment 6.
Are fitted. Dowel abutment 6 and root canal filling material 7 are tooth roots 9.
, And a bonding material 8 is used in these gaps. Points and sealers made of gutta-percha, silver, or polypropylene are mainly used for root canal filling. Neither has the role of a nail. The dowel is supposed to be inserted and fixed up to two-thirds above the root canal, but it has no concept or function as root canal filling.
【０００５】したがって、従来型技術は以下のような問
題点があった。
(A)根管充填後に根管の合釘装着のために根管の再拡
大、形成が必要となる、(B)根管の再拡大、形成は、根
管壁をより菲薄とし、破折しやすくする、(C)根管内で
合釘と根管充填材が異なる材質により非連続となってい
るため、咬合力が加わったときに歯の破折や合釘部の脱
落が生じる、(D)根管の再拡大、形成のために根管充填
時に閉鎖した根管壁の象牙細管を再露出させ、それに伴
い歯周組織への感染の機会が増加する。Therefore, the conventional technique has the following problems. (A) It is necessary to re-expand and form the root canal to attach dowels to the root canal after filling the root canal. (B) Re-expansion and formation of the root canal make the root canal wall thinner and break. (C) Since the dowel and the root canal filling material are discontinuous in the root canal due to different materials, when the occlusal force is applied, tooth fracture or drop of the dowel part occurs, (D) To re-expand and form the root canal, the dentinal tubules of the root canal wall that were closed at the time of root canal filling are re-exposed, which increases the chance of infection of periodontal tissues.
【０００６】[0006]
【発明が解決しようとする課題】本発明者は、先に上記
の欠点を改良し、根管充填、支台歯形成、合釘装着から
支台築造まで複雑な過程を１段階で完了させ、作業性の
単純化、歯根破折の防止、歯周組織への感染予防を目的
とした合釘と根管充填材の一体化構造物を提案したが
（特願２００１−１５３８４０号）、更に根管に充填し
やすい根管充填材と合釘との一体化構造物について種々
検討した結果、本発明品を完成したもので、本件発明の
目的は根管に充填しやすい根管充填材と合釘との一体化
構造物を提供することである。SUMMARY OF THE INVENTION The present inventor has improved the above-mentioned drawbacks by completing a complicated process from root canal filling, abutment tooth formation, dowel attachment to abutment construction in one step. We proposed an integrated structure of dowel and root canal filling material for the purpose of simplifying workability, preventing root fracture and preventing periodontal infection (Japanese Patent Application No. 2001-153840). As a result of various studies on the integrated structure of the root canal filling material and dowel that can be easily filled into the canal, the present invention product has been completed. It is to provide an integrated structure with a nail.
【０００７】[0007]
【課題を解決するための手段】本発明の要旨は、歯髄摘
出後の死腔根管を充填する根管充填材と歯冠欠損補綴の
合釘支台を一体化させた根管充填材と合釘支台とからな
る一体化構造物であって、前記一体化構造物の根管充填
材はニッケルチタン合金より成り、且つ、歯質接着性レ
ジンを固定する横張筋を設置し、該横張筋に歯質接着性
レジンによって固定された合釘支台部を有することを特
徴とする根管充填材と合釘支台とからなる一体化構造物
である。The gist of the present invention is to provide a root canal filling material for filling a dead space root canal after pulpectomy and a root canal filling material in which a dowel abutment for a crown defect prosthesis is integrated. An integrated structure comprising a dowel abutment, wherein the root canal filling material of the integrated structure is made of a nickel titanium alloy, and a lateral stretch muscle for fixing a tooth adhesive resin is installed. An integrated structure composed of a root canal filling material and a dowel abutment, characterized in that it has a dowel abutment portion fixed to a muscle by a tooth adhesive resin.
【０００８】[0008]
【発明の実施の形態】本発明について詳細に述べる。本
発明では、根管充填材と合釘支台を一体とするのである
が、根管充填材の材質としてはニッケルチタン合金を用
いる。根管充填材として具備すべき条件を要約すると以
下のようになる。
Ａ）根管内に容易に挿入できて根管と根尖孔の完全な閉
鎖、
Ｂ）毒性がなく、異物性、生体反応が低いこと、
Ｃ）物理、化学的に安定なこと、
Ｄ）レントゲン造影性を有すること、
Ｅ）除去可能であること、
Ｆ）滅菌できること、また、この合釘として具備すべき
条件を要約すると以下のようになる。
Ａ）残存歯質を増強すること、
Ｂ）歯冠補綴物の保持・抵抗力を増強すること、
Ｃ）歯冠補綴物の適合性を向上すること、
Ｄ）歯冠補綴物の厚みを均一化すること、
根管充填材の好ましい条件は、先に述べたように、物理
化学的に安定で、生体に対する抗原性や毒性が無く、同
時に根管内に容易に挿入するための適度な硬さと弾力が
必要である。挿入された根管充填材は根管壁と密着性の
高いことが要求される。また造影性が必要である。以上
の点から、先の出願では根管充填材の部分の金属はステ
ンレス鋼を用いたが、更に検討した結果、ニッケルチタ
ン合金が好ましい。即ちＮｉ４９〜５８原子％のニッケ
ルチタン合金は一定の応力下で比較的大きく変位し且
つ、弾性歪み特性を有するので超弾性金属とも称されて
いるものであって、該金属によって曲がった根管にも根
管壁を傷つけることなく根尖孔の閉鎖を容易に行うこと
ができる。そして、ニッケルチタン合金は根管充填材と
してのＩＳＯ規格に合った形状に成形することができ、
細く湾曲した根管にも充填でき、合釘支台としての強度
も有している。そして合釘支台にはレジン支台を保持す
るため金属製の横張筋が設置されている。横張筋の金属
については生体用合金であればよく、例えばステンレス
鋼でもよいが根管充填材の材質と同一のニッケルチタン
合金が特に好ましい。横張筋に接着性レジンを流し込ん
で支台を築造する。横張筋は根管充填の時に根管の長さ
や歯冠歯質の残存状態により調節され、除去される。根
管充填部と根管壁の隙間は根管セメントで充填される。
本発明にかかる一体化構造物は毒性、生体反応がほとん
どなく、歯科臨床で標準的に使用されているオートクレ
ーブ滅菌法を含む全ての滅菌が適応でき、造影性もＩＳ
Ｏ規格を満足している。根管充填に併用される根管セメ
ントは歯質接着性、強固な物性により、一体化構造物を
根管に良く固定する。本発明に係る一体化構造物の充填
材部分は、上述のように、ニッケルチタン鋼からなって
おり、その下方約２／３は根管充填材の役割を果たし、
上方約１／３は歯冠欠損補綴の支台となる合釘（合釘支
台）に相当する。BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail. In the present invention, the root canal filling material and the dowel abutment are integrated, but a nickel titanium alloy is used as the material of the root canal filling material. The conditions to be provided as a root canal filling material are summarized as follows. A) Easy insertion into the root canal and complete closure of the root canal and apical foramen, B) No toxicity, foreign body, low biological response, C) Physical and chemical stability, D) The following is a summary of having X-ray contrast, E) being removable, F) being able to sterilize, and the conditions that this nail should have. A) Strengthening the residual tooth quality, B) Strengthening the retention and resistance of the crown prosthesis, C) Improving the compatibility of the crown prosthesis, D) Uniform thickness of the crown prosthesis As described above, the preferable conditions for the root canal filling material are physicochemically stable, no antigenicity and toxicity to the living body, and at the same time, an appropriate hardness for easy insertion into the root canal. And need elasticity. The inserted root canal filling material is required to have high adhesion to the root canal wall. Also, the contrast property is required. From the above points, stainless steel was used as the metal of the root canal filling material in the previous application, but as a result of further study, a nickel titanium alloy is preferable. That is, since a nickel-titanium alloy containing 49 to 58 atomic% of Ni has a relatively large displacement under a constant stress and has an elastic strain characteristic, it is also called a superelastic metal. Also, the apical foramen can be easily closed without damaging the root canal wall. Then, the nickel titanium alloy can be molded into a shape that meets the ISO standard as a root canal filling material,
It can be filled into a thin curved root canal and has strength as a dowel abutment. The dowel abutment is provided with a metal horizontal stretch bar to hold the resin abutment. The metal of the lateral striated muscle may be a biomedical alloy, for example, stainless steel, but a nickel titanium alloy which is the same as the material of the root canal filler is particularly preferable. Adhesive resin is poured into the transverse muscles to build an abutment. The lateral muscles are adjusted and removed by the length of the root canal and the remaining state of the crown dentin when filling the root canal. The gap between the root canal filling part and the root canal wall is filled with root canal cement.
The integrated structure according to the present invention has almost no toxicity or biological reaction, can be applied to all sterilization including autoclave sterilization method that is standardly used in dental clinic, and has an imaging property.
It meets the O standard. Root canal cement, which is used for root canal filling, firmly fixes the integrated structure to the root canal due to its adhesive property and strong physical properties. As described above, the filler portion of the integrated structure according to the present invention is made of nickel titanium steel, and about 2/3 of the lower portion thereof serves as a root canal filler,
About 1/3 above corresponds to a dowel (dowel abutment) that serves as an abutment for a crown defect prosthesis.
【０００９】本発明の一体化構造物について図面をもっ
て説明する。本発明にかかる一体化構造物は根管充填部
１と合釘支台６からなり、合釘支台６には横張筋２が設
置されており（図１）、この部分が歯冠欠損補綴の支台
となる。根管充填部１の先端部はＩＳＯ規格に合致して
いる。この根管充填部はシーラ（根管セメント）４とと
もに抜髄後の空洞(死腔）に充填される。歯冠欠損部に
突き出た支台合釘部には歯質接着性コンポジットレジン
３を注入した既製仮封冠で被覆され、シーラ（根管セメ
ント）４が流し込まれ支台が築造される（図２）。次
に、先に被覆した仮封冠を除去し、形成された支台には
人工歯冠５が装着され、欠損補綴が完了する（図３）。
根管セメントとしては、根管壁に接着し、十分な硬度のあ
るglass ionomer sealerまたは接着性レジンセメントが
適している。支台築造用の既製仮封冠は内面が支台形態
となっており、その内部に接着予防のワセリンなどが塗
布された後に、歯質接着性コンポジットレジンが注入さ
れる。レジンの硬化後に既製仮封冠を除去すると、そこ
に支台築造が完成している。The integrated structure of the present invention will be described with reference to the drawings. The integrated structure according to the present invention is composed of a root canal filling part 1 and a dowel abutment 6, and a lateral stretch muscle 2 is installed on the dowel abutment 6 (FIG. 1). Will be the abutment of. The tip of the root canal filling part 1 conforms to the ISO standard. This root canal filling portion is filled with a sealer (root canal cement) 4 in a cavity (dead space) after demyelination. The abutment joint protruding from the crown defect is covered with a ready-to-use temporary crown in which the dental adhesive composite resin 3 is injected, and a sealer (root canal cement) 4 is poured to build the abutment (Fig. 2). Next, the temporary sealing crown previously covered is removed, the artificial crown 5 is attached to the formed abutment, and the defective prosthesis is completed (FIG. 3).
As the root canal cement, a glass ionomer sealer or an adhesive resin cement that adheres to the root canal wall and has sufficient hardness is suitable. The ready-made temporary sealing crown for abutment construction has an abutment on the inner surface, and vaseline or the like for adhesion prevention is applied to the inside thereof, and then a dentin adhesive composite resin is injected. After the resin is hardened, the ready-made temporary cap is removed, and the abutment construction is completed there.
【００１０】以下、一体化構造の詳細と実際の使用法に
ついて具体的に述べる。本発明品の一体化構造における
根管充填部の形状、太さは、従来の根管充填材や根管機
器と同じくＩＳＯ規格に従っており、先端太さは０．２
５ｍｍから０．７ｍｍまで種々あり、２５，３０，３
５，４０，４５，５０，５５，６０，６５，７０号とな
っている。各々の形状は先端まで先細りとなっている。
本発明にかかるニッケルチタン合金製の一体化構造物は
全長約２０ｍｍであり、根管充填部と合釘支台部からな
っている。根管充填部は長さ約約１２〜１５ｍｍであ
り、ＩＳＯ規格の範囲にある従来の固形根管充填材の場
合と同様のサイズ、形状を呈し、先端において約０．２
５〜０．７ｍｍの直径を有し、適用する根管により種々
選択する。その先端部は挿入しやすく根尖孔を閉鎖しや
すいように半球形をなしている。根管充填部から連続す
る合釘支台部は長さは約８ｍｍであり、それと直角に長
さ４ｍｍの横張筋が先端約１２ｍｍの位置から合釘端ま
で１ｍｍ間隔に設置される（図１参照）。横張筋は，根
管充填の試適時に根管の長さや歯冠歯質の残存状態によ
り調節され、除去される。横張筋における長さ４ｍｍは
ここに築造されるレジン支台からはみ出さない長さであ
る。この一体化構造物に使用されているニッケルチタン
合金はすでに安全性の高い生体用合金として口腔外科や
整形外科の領域で用いられており、その適度な弾性は細
い湾曲した根管に対する充填を可能とする。The details of the integrated structure and the actual usage will be specifically described below. The shape and thickness of the root canal filling portion in the integrated structure of the product of the present invention conform to the ISO standard as in the conventional root canal filling material and root canal equipment, and the tip thickness is 0.2.
There are various types from 5 mm to 0.7 mm, 25, 30, 3
No. 5,40,45,50,55,60,65,70. Each shape is tapered to the tip.
The nickel-titanium alloy integrated structure according to the present invention has a total length of about 20 mm and comprises a root canal filling part and a dowel abutment part. The root canal filling part has a length of about 12 to 15 mm, has the same size and shape as the case of the conventional solid root canal filling material within the range of the ISO standard, and has about 0.2 at the tip.
It has a diameter of 5 to 0.7 mm and is variously selected depending on the root canal to be applied. Its tip is hemispherical for easy insertion and closure of the apical foramen. The length of the dowel abutment part continuing from the root canal filling part is about 8 mm, and a transverse tension muscle having a length of 4 mm is installed at a 1 mm interval from the position of about 12 mm at the tip to the end of the dowel at right angles (Fig. 1). reference). Lateral muscles are adjusted and removed depending on the length of the root canal and the residual condition of the crown and dentin during the trial of root canal filling. The length of 4 mm in the transverse musculature is a length that does not protrude from the resin abutment built here. The nickel-titanium alloy used in this integrated structure is already used as a highly safe biomedical alloy in the fields of oral surgery and orthopedic surgery, and its moderate elasticity enables filling of thin curved root canals. And
【００１１】患者の歯にこれを装着するときは、まず歯
冠部のう触が除去され、次に根管から感染歯髄が除去さ
れる。死腔となった根管は拡大、整形される。拡大、整
形に使用される根管機器は、ＩＳＯ規格に従った種々の
サイズ、形状があり、その根管にあった適切なものが選
択される。続いて、用いられた根管機器と同一サイズの
根管充填部を持つ一体化構造物が選択され、根管に試適
され、その適合性がＸ線で確認される。その際に、根管
の長さに応じて横張筋の一部が切除される。根管充填部
はglass ionomer sealerあるいは接着性レジンセメント
と共に根管に充填される（図３参照）。Glass ionomer
sealerまたは接着性レジンセメントは一体化構造物の根
管充填部と根管壁との隙間を埋め、同時に根管歯質と接
着し、象牙細管、根尖孔を閉鎖する。同時に根管セメン
トの強固な物性は一体化構造を根管においてよく保持す
る。Glass ionomer sealerはすでに根管充填ポイントと
共に臨床使用されており、低異物性、低生体反応で安全
性が高く、フッ素イオン徐放性により歯質の強化作用と
抗菌性をもち、ＩＳＯ規格を満足させる造影性を有して
いる。接着性レジンセメントは骨セメントとして整形外
科領域で人工股関節の装着に使用されているメチルメタ
クリレイトレジン（ＭＭＡ）などによって構成されてい
る。次に支台築造のため、根管から突き出た合釘支台部
に内面が支台形態となっている支台築造用の既製仮封冠
が被覆され、その内部に歯質接着性レジンが注入され
る。レジンの硬化した段階で既製仮封冠は除去され、そ
こに支台が形成される。支台築造部は精密印象され、作
成された人工歯冠が装着される(図３参照)。この一体化
構造物を除去する必要が生じたときは、支台築造部の除
去の後に、合釘部を回転させながら抜去する。除去後は
根管壁には根管セメントが接着した状態の空洞が根尖ま
で形成され、そこを通じて再治療が行われる。この一体
化構造物は前歯，臼歯のいずれにも適応できる。この一
体化構造物を除去する場合は、歯冠とレジン支台を除去
し、一体化構造を回転させ抜去する。When mounting it on the patient's tooth, first the caries of the crown are removed and then the infected pulp is removed from the root canal. The dead root canal is enlarged and shaped. The root canal device used for expansion and shaping has various sizes and shapes according to the ISO standard, and an appropriate one suitable for the root canal is selected. Subsequently, an integrated structure having a root canal filling part of the same size as the used root canal device is selected, trial-adapted to the root canal, and its compatibility is confirmed by X-ray. At that time, a part of the lateral tensor muscle is cut off according to the length of the root canal. The root canal filling part is filled in the root canal together with the glass ionomer sealer or the adhesive resin cement (see FIG. 3). Glass ionomer
The sealer or adhesive resin cement fills the gap between the root canal filling part and the root canal wall of the integrated structure, and at the same time, adheres to the root canal dentin and closes the dentinal tubule and the apical foramen. At the same time, the strong physical properties of root canal cement hold the integrated structure well in the root canal. The glass ionomer sealer has already been clinically used together with the root canal filling point, has high safety with low foreign substance property and low biological reaction, and has a strengthening action and antibacterial property of teeth due to the sustained release of fluoride ion, and satisfies the ISO standard. It has contrast properties. The adhesive resin cement is composed of, for example, methyl methacryle resin (MMA) which is used as a bone cement for mounting an artificial hip joint in the orthopedic region. Next, for abutment construction, the dowel abutment portion protruding from the root canal is covered with a ready-made temporary sealing crown for abutment construction whose inner surface is in the form of an abutment, and inside of which there is a tooth adhesive resin. Injected. When the resin has hardened, the ready-made temporary sealing cap is removed and an abutment is formed there. The abutment building part is precisely impressed and the created artificial crown is attached (see FIG. 3). When it becomes necessary to remove this integrated structure, after removing the abutment building portion, the dowel portion is removed while rotating. After the removal, a cavity with root canal cement adhered is formed up to the apex of the root canal wall, and retreatment is performed there. This integrated structure can be applied to both anterior and posterior teeth. When removing the integrated structure, the crown and the resin abutment are removed, and the integrated structure is rotated and removed.
【００１２】[0012]
【実施例及び比較例】次に実施例を以て本発明を具体的
に説明する。
実施例１
根尖部が０．４ｍｍの太さで根管拡大された歯の根管内
に、同じ太さのＩＳＯ規格の形状を有するニッケルチタ
ン合金よりなる一体構造の根管充填部がglassionomer s
ealerとともに充填され、ニッケルチタン合金よりなる
横張筋は根管の長さに合わせて調節、切除される。根管
充填後のレントゲン撮影でも、根管壁と根管充填部は、
根管壁に密着し、根尖孔を塞ぐ緊密な充填として確認さ
れた。根管セメントが固まったことを確認した後に、支
台築造用の仮封冠が合釘支台部に被覆され、そこには歯
質接着性レジンが注入され、硬化後に仮封冠を除去する
と支台が築造されておりこれを支台形成する。そこに人
工歯冠が装着される。EXAMPLES AND COMPARATIVE EXAMPLES Next, the present invention will be specifically described with reference to Examples. Example 1 In a root canal of a tooth whose root apex was 0.4 mm in diameter, a root canal filling part made of nickel titanium alloy having the same thickness and having an ISO standard has a root canal filling part having an integral structure, which is a glassionomer. s
Lateral muscles made of nickel-titanium alloy filled with ealer are adjusted and excised according to the length of the root canal. Even in X-ray photography after root canal filling, the root canal wall and root canal filling part
It was confirmed as a close packing that closely adheres to the root canal wall and blocks the apical foramen. After confirming that the root canal cement has hardened, a temporary sealing crown for abutment construction is coated on the dowel abutment, to which dentin adhesive resin is injected, and after curing the temporary sealing crown is removed. An abutment has been built to form this abutment. An artificial crown is attached there.
【００１３】[0013]
【発明の効果】以上述べたように、本発明の支台築造部
の合釘と根管充填部の一体化構造は、根管充填材、合釘
支台の具備すべき条件を満たし、さらに従来の根管充
填、支台築造に比較して次のような効果を奏する。
１．本発明は根管充填部と合釘部が連続した一体型のた
め、根管充填、合釘支台装着、支台築造までが１回治療
で行える。
２．合釘支台部の横張筋はレジン築造を強固に保持でき
る。
３．一体化構造のため、それ自体の破折、脱落、あるい
は歯根の破折が少ない。
４．ニッケルチタン合金を用いているため毒性、生体反
応は極めて少なく、全ての滅菌法が可能であり、しかも
弾性に富むので、根管壁を傷つけることなく根管内に容
易に充填することができる。
５．臨床使用されている歯質接着性シーラである，glas
s ionomer sealerや接着性レジンセメントを用いること
により上記の一体化構造物の特性が向上する。
６．一体化構造物は前歯，臼歯のいずれにも適応でき
る。As described above, the integrated structure of the dowel and the root canal filling portion of the abutment construction portion of the present invention satisfies the conditions that the root canal filling material and the dowel abutment should have. Compared with conventional root canal filling and abutment construction, the following effects are achieved. 1. In the present invention, since the root canal filling part and the dowel part are continuous, the root canal filling, dowel abutment mounting, and abutment construction can be performed in one treatment. 2. The lateral tension muscles of the dowel abutment can firmly hold the resin construction. 3. Due to the integrated structure, there is little breakage, dropout, or root breakage. 4. Since the nickel-titanium alloy is used, toxicity and biological reaction are extremely small, all sterilization methods are possible, and since it is rich in elasticity, it can be easily filled into the root canal without damaging the root canal wall. 5. Glas, a clinically used dentinal adhesive sealer
The use of the ionomer sealer or the adhesive resin cement improves the properties of the integrated structure. 6. The integrated structure can be applied to both front and molar teeth.
【図１】本発明に係る一体化構造物の根管充填部の説明
図。FIG. 1 is an explanatory view of a root canal filling portion of an integrated structure according to the present invention.
【図２】支台合釘部に接着性レジンの流し込みにより築
造された支台の説明図。FIG. 2 is an explanatory view of an abutment built by pouring an adhesive resin into an abutment dowel part.
【図３】図２の築造支台に人工歯冠を装着した説明図。FIG. 3 is an explanatory diagram in which an artificial dental crown is attached to the building abutment of FIG.
【図４】従来型の歯冠継続歯の構成を示した図。FIG. 4 is a diagram showing a configuration of a conventional continuous crown tooth.
１ 根管充填部 ２ 横張筋 ３ 歯質接着性
コンポジット
４ 根管セメント ５ 人工歯冠 ６ 合釘支
台部
７ ガッタパージャ＋シーラー ８ 合着材
９ 歯根1 Root canal filling part 2 Lateral lateral muscle 3 Dental adhesive composite 4 Root canal cement 5 Artificial dental crown 6 Dowel abutment part 7 Gutta-purger + sealer 8 Adhesive
9 roots
───────────────────────────────────────────────────── フロントページの続き (71)出願人 501202945 武本 泰 福島県郡山市桃見台８番地24号 レールシ テイ桃見台702号 (71)出願人 501204787 石河 達雄 福島県郡山市昭和２−12−５ (72)発明者 大根 光朝 福島県郡山市開成２−１−56 (72)発明者 菊井 徹哉 福島県郡山市富久山町久保田字石堂27−１ 石堂ハイツ５号棟36号 (72)発明者 酒井 勝衛 神奈川県横浜市青葉区松風台11−６ (72)発明者 武本 泰 福島県郡山市桃見台８番地24号 レールシ テイ桃見台702号 (72)発明者 石河 達雄 福島県郡山市昭和２−12−５ Ｆターム(参考） 4C052 AA16 AA17 HH01 ─────────────────────────────────────────────────── ─── Continued front page (71) Applicant 501202945 Takemoto Yasushi Fukushima Prefecture Koriyama City Momomidai No. 24 No. 24 Railsi Tay Momomidai 702 (71) Applicant 501204787 Tatsuo Ishikawa 2-12-5, Showa, Koriyama City, Fukushima Prefecture (72) Inventor Mitsuasa Daikon 2-1-5 Kaisei, Koriyama City, Fukushima Prefecture (72) Inventor Tetsuya Kikui 27-1 Ishido, Kubota, Fukuyama-cho, Koriyama-shi, Fukushima Prefecture Ishido Heights Building No. 5 No. 36 (72) Inventor Katsue Sakai 11-6 Matsufudai, Aoba-ku, Yokohama-shi, Kanagawa (72) Inventor Yasushi Takemoto Fukushima Prefecture Koriyama City Momomidai No. 24 No. 24 Railsi Tay Momomidai 702 (72) Inventor Tatsuo Ishikawa 2-12-5, Showa, Koriyama City, Fukushima Prefecture F-term (reference) 4C052 AA16 AA17 HH01
Claims (2)
材と歯冠欠損補綴の合釘支台を一体化させた根管充填材
と合釘支台とからなる一体化構造物であって、前記一体
化構造物の根管充填材はニッケルチタン合金より成り、
且つ、歯質接着性レジンを固定する横張筋を設置し、該
横張筋に歯質接着性レジンによって固定された合釘支台
部を有することを特徴とする根管充填材と合釘支台とか
らなる一体化構造物。1. An integrated structure comprising a root canal filling material and a dowel abutment, in which a root canal filling material for filling a dead space root canal after pulpectomy and a dowel abutment for a prosthetic crown defect are integrated. Wherein the root canal filling material of the integrated structure is made of a nickel titanium alloy,
A root canal filling material and a dowel abutment, characterized in that a transverse muscle for fixing a tooth adhesive resin is installed, and the dorsal muscle has a dowel abutment portion fixed by the tooth adhesive resin. An integrated structure consisting of.
項１記載の根管充填材と合釘支台とからなる一体化構造
物。2. An integrated structure composed of a root canal filling material and a dowel abutment according to claim 1, wherein the transverse tension bar is made of a nickel titanium alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001315001A JP2003116883A (en) | 2001-10-12 | 2001-10-12 | Integrated structure composed of root canal filler and dowel supporting base |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001315001A JP2003116883A (en) | 2001-10-12 | 2001-10-12 | Integrated structure composed of root canal filler and dowel supporting base |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003116883A true JP2003116883A (en) | 2003-04-22 |
Family
ID=19133232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001315001A Pending JP2003116883A (en) | 2001-10-12 | 2001-10-12 | Integrated structure composed of root canal filler and dowel supporting base |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003116883A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011102781A1 (en) * | 2011-05-30 | 2012-12-06 | Gebr. Brasseler Gmbh & Co. Kg | Root pin used for root canal treatment, has radicular region that is attached to connection region and made up of nickel-titanium alloy |
| DE102015121665A1 (en) | 2015-12-11 | 2017-06-14 | Bredent Gmbh & Co. Kg | root post |
| CN111388111A (en) * | 2020-04-21 | 2020-07-10 | 吴瑛 | Titanium material root canal plug tip and equipment |
-
2001
- 2001-10-12 JP JP2001315001A patent/JP2003116883A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011102781A1 (en) * | 2011-05-30 | 2012-12-06 | Gebr. Brasseler Gmbh & Co. Kg | Root pin used for root canal treatment, has radicular region that is attached to connection region and made up of nickel-titanium alloy |
| DE102015121665A1 (en) | 2015-12-11 | 2017-06-14 | Bredent Gmbh & Co. Kg | root post |
| WO2017097911A1 (en) | 2015-12-11 | 2017-06-15 | Bredent Gmbh & Co. Kg | Root pin |
| CN111388111A (en) * | 2020-04-21 | 2020-07-10 | 吴瑛 | Titanium material root canal plug tip and equipment |
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