JP2725194B2 - Artificial root - Google Patents
Artificial rootInfo
- Publication number
- JP2725194B2 JP2725194B2 JP63316225A JP31622588A JP2725194B2 JP 2725194 B2 JP2725194 B2 JP 2725194B2 JP 63316225 A JP63316225 A JP 63316225A JP 31622588 A JP31622588 A JP 31622588A JP 2725194 B2 JP2725194 B2 JP 2725194B2
- Authority
- JP
- Japan
- Prior art keywords
- root
- bone
- present
- artificial
- artificial tooth
- 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.)
- Expired - Fee Related
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
- A61C8/0018—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the shape
- A61C8/0022—Self-screwing
Landscapes
- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Orthopedic Medicine & 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 Prosthetics (AREA)
Description
【発明の詳細な説明】 本発明は人工歯根に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an artificial dental root.
歯としての機能を喪失した天然歯と代替すべく、人工
的に形成された歯根と義歯との組み合わせが提案される
に至っている現況に於いて、咀嚼による咬合圧等の外圧
に耐え、且つ長期間の使用可能ならしめる人工歯根が希
求されている。In the current situation where combinations of artificially formed roots and dentures have been proposed to replace natural teeth that have lost their function as teeth, they can withstand external pressure such as occlusal pressure due to mastication and have a long length. There is a need for an artificial root that can be used for a period of time.
上記に鑑み本発明は、インプラント後、顎骨内での固
定性に優れることにより、咀嚼力に充分に対応しなが
ら、長期間安定した使用を可能にした人工歯根の提供を
目的とする。In view of the above, it is an object of the present invention to provide an artificial tooth root that has excellent fixability in a jawbone after an implant, and that can be used stably for a long period of time while sufficiently responding to the mastication force.
以下、本発明人工歯根の一実施例を図面を参照して詳
細に説明する。Hereinafter, an embodiment of the artificial tooth root of the present invention will be described in detail with reference to the drawings.
第１図は本発明人工歯根の形状を示す。 FIG. 1 shows the shape of the artificial tooth root of the present invention.
芯材はアルミナ、ジルコニア等のセラミックス材、あ
るいはチタン、チタン合金、Co−Cr合金等の硬質金属材
よりなる。The core material is made of a ceramic material such as alumina or zirconia, or a hard metal material such as titanium, a titanium alloy, or a Co-Cr alloy.
第１図に示す本体は、生体骨部及び表皮、真皮組織に
埋設される個所を歯根部（01）、義歯を装着する個所を
義歯装着部（02）とした。In the main body shown in FIG. 1, the portion embedded in the living bone, the epidermis, and the dermal tissue was defined as a root portion (01), and the portion where a denture was mounted was defined as a denture mounting portion (02).
歯根部（01）は、ネジ部（１）、凹部（３）、凸部
（４）の３部によって形成され、何れもが芯材を加工成
形したものである。The root part (01) is formed by three parts of a screw part (1), a concave part (3), and a convex part (4), and all are formed by processing a core material.
ネジ部（１）には、芯材、軸方向（Ｘ）にカット面
（１）が施されていた。カット面（１）は、第２図
（ａ）に示した底面図を参照するように、例えば、４方
向に渡って成形されている。The screw portion (1) had a core material and a cut surface (1) in the axial direction (X). The cut surface (1) is formed, for example, in four directions as shown in the bottom view shown in FIG. 2 (a).
カット面の方向は、１方向以上であれば、かまわな
い。The direction of the cut surface is not limited as long as it is one direction or more.
ネジ部（１）のピッチ、深さ、カット面の個数等は、
本体の植設される個所によって適宜選択される。凹部
（３）は、ネジ部（１）の歯高値と同程度に形成され、
更に凸部（４）が形成されている。The pitch, depth, number of cut surfaces, etc. of the thread part (1)
It is appropriately selected depending on the place where the main body is to be planted. The concave portion (3) is formed to be approximately the same as the tooth height of the screw portion (1),
Further, a projection (4) is formed.
凹部（３）は、皮質骨部に接する位置に設けられ、歯
根が植設された後、造骨作用と共に凹部（３）に新生骨
組織が入り込み、歯根部が容易に抜けなくなるような働
きを有する。The concave portion (3) is provided at a position in contact with the cortical bone portion, and after the root is implanted, has a function of preventing bone from easily coming out of the concave portion (3) along with the osteoblastic action. Have.
凸部（４）は、歯根が植設された直後、植設個所から
出る血を外部に漏れないように、骨表面と接触して蓋の
作用を行なわせしめる働きもある。Immediately after the root is implanted, the convex part (4) also has a function of contacting the bone surface to perform the function of the lid so as to prevent blood leaking from the implantation site from leaking to the outside.
凹部（３）、凸部（４）の深さ乃至高さ及び幅は、特
定の数値に設定する必要はなく、植設個所に応じ適宜成
形されるものである。The depth, height, and width of the concave portion (3) and the convex portion (4) do not need to be set to specific numerical values, and are appropriately formed according to the planting location.
義歯装着部（02）は、義歯を装着しやすい形状であれ
ば適宜選択の範囲であるが、本実施例に於いては、台形
錐状の形に対して平面（５）を１対成形したものを示し
た。The denture mounting portion (02) can be appropriately selected as long as the denture can be easily mounted. In the present embodiment, a pair of flat surfaces (5) is formed with respect to a trapezoidal conical shape. What showed.
本発明人工歯根に於いては、芯材として少なくとも生
体為害性のないもので、且つ硬質性の材料を使用するこ
とが好ましいが、更に生体との結合を化学的に図る為
に、歯根部を生体親和性を有する材料で被覆したもので
あってもよい。これを第４図に示す。義歯装着部（02）
を残して、歯根部（01）に生体親和性部材（６）が被覆
されている。生体親和性部材（６）は、ハイドロキシア
パタイトが特に好ましいものであるが、他、TCP,4−CP
等も好適に使用可能である。In the artificial tooth root of the present invention, it is preferable to use a hard material that is at least harmless to living organisms as a core material, but in order to further chemically bond with the living body, It may be coated with a material having biocompatibility. This is shown in FIG. Denture mounting part (02)
, The root portion (01) is covered with the biocompatible member (6). As the biocompatible member (6), hydroxyapatite is particularly preferred, but also TCP, 4-CP
Etc. can also be suitably used.
被覆方法に関しては、次の通りである。 The coating method is as follows.
プラズマ溶射による被覆、ハイドロキシアパタイト粉
体を高温度のプラズマ炎に接触させ、溶融した状態で芯
材に吹き付け、被覆層を得る。Coating by plasma spraying, the hydroxyapatite powder is brought into contact with a high-temperature plasma flame, and sprayed on the core material in a molten state to obtain a coating layer.
他、ハイドロキシアパタイトゲルに歯根部を漬けた
後、乾燥させて被覆層を得るディッピング法、蒸着法等
がある。In addition, there are a dipping method, a vapor deposition method, and the like in which a root portion is dipped in a hydroxyapatite gel and then dried to obtain a coating layer.
第４図に示す実施例のように、ハイドロキシアパタイ
トの被覆層を設ける際、ネジ部（１）の隅まで被覆層が
入り込み、むらのない層を形成するように、ネジ部は第
３図に示すように台形型に加工するものであってもよ
い。When the coating layer of hydroxyapatite is provided as in the embodiment shown in FIG. 4, the screw section is inserted into FIG. 3 so that the coating layer enters into the corners of the screw section (1) to form an even layer. As shown, it may be processed into a trapezoidal shape.
第５図に、本発明人工歯根を植設した直後の状態を示
した。FIG. 5 shows a state immediately after the artificial tooth root of the present invention was implanted.
植設は、予め骨組織に穴を開けた後、歯根を挿入する
仕方を取る。For implantation, a method is used in which a hole is made in advance in a bone tissue and a root is inserted.
従って、凹部（３）乃至ネジ部（２）の底部は、空隙
（A1）（A2）となる。植設直後は穴が傷口となり出血す
る。この出血を凹部（３）が、開けた穴に対して蓋の機
能を有し、外部への漏血を阻止する。ハイドロキシアパ
タイトによる被覆層（６）は、少なくとも歯根部と生体
組織とが接触する個所全般に配置されることが好ましい
ことから、第５図では歯肉（Ｃ）との接触面迄、被覆層
（６）は延びた状態となっている。Therefore, the bottoms of the recesses (3) to the threaded portions (2) are voids (A1) and (A2). Immediately after implantation, the hole becomes a wound and bleeds. This bleeding has the function of a lid against the hole formed by the concave portion (3), and prevents blood leakage to the outside. It is preferable that the coating layer (6) made of hydroxyapatite is disposed at least on the whole area where the tooth root and the living tissue come into contact with each other. Therefore, in FIG. 5, the coating layer (6) is formed up to the contact surface with the gum (C). ) Is in an extended state.
義歯（Ｂ）は義歯装着部（02）に装着されている。
又、図示されていないが、ネジ部（１）に施したカット
面（２）も同様に空隙となる。The denture (B) is mounted on the denture mounting part (02).
Although not shown, the cut surface (2) provided on the screw portion (1) also becomes a gap.
植設後2,3週間経過すると、治癒と共に造骨作用から
空隙は埋まっていき、更に被覆層と結合する。After a few weeks after implantation, the voids are filled with bone healing as well as healing, and further bond with the coating layer.
この結果、凹部（３）及びネジ部（１）は、歯根が上
下に移動しない為のストッパーとなると共に、ネジ部
（１）のカット面（２）は、回転しない為のストッパー
となる。As a result, the concave portion (3) and the screw portion (1) serve as a stopper for preventing the root from moving up and down, and the cut surface (2) of the screw portion (1) serves as a stopper for preventing rotation.
以上の如く本発明は、生体組織に、強く化学的に且つ
機械的に固定される等の効果を有するものである。As described above, the present invention has effects such as being strongly chemically and mechanically fixed to a living tissue.
以下、本発明の実施例を説明する。 Hereinafter, embodiments of the present invention will be described.
実施例１ 全長19mm、直径5mmの、第４図に示すネジ部等を有す
るチタン芯材に水銀アパタイトを溶射コーティングした
人工歯根を得た。Example 1 An artificial tooth root was obtained by spray coating mercury apatite on a titanium core having a total length of 19 mm and a diameter of 5 mm and having a threaded portion as shown in FIG.
メスのシェパード犬の下顎より抜歯後、ドリルにて穿
孔し、前記人工歯根を埋込縫合した。After tooth extraction from the lower jaw of a female Shepard dog, the artificial root was implanted and sutured with a drill.
術後２ケ月で、歯根は顎骨との非常に強固な固着を認
めた。Ｘ線所見においても２週より骨の新生が認めら
れ、１ケ月後には明確なＸ線不透過部が歯根周囲に認め
られた。Two months after the operation, the roots showed very firm attachment to the jaw bone. X-ray findings also revealed new bone formation from 2 weeks, and one month later, a clear X-ray opaque portion was observed around the root of the tooth.
実施例２ 全長12mm、直径4mm、内ネジ部7mm（ピッチ1.5mm、凹
部深さ0.5mm）のチタン材よりなる歯根芯材に、熱分解
法ハイドロキシアパタイトを厚さ５μｍコーティングし
て、第４図に示す歯根を得た。Example 2 A root material made of titanium having a total length of 12 mm, a diameter of 4 mm, and an internal thread portion of 7 mm (pitch: 1.5 mm, recess depth: 0.5 mm) was coated with a thermally decomposed hydroxyapatite of 5 μm in thickness. Were obtained.
成犬の下顎骨に、抜歯後ドリルにより穴を開け、上記
歯根を埋入した。After extraction, a hole was drilled in the mandible of an adult dog, and the above-mentioned tooth root was implanted.
施術後１ケ月にて顎骨と歯根の固着が認められ、２ケ
月において強固な結合を示した。Ｘ線写真においても、
歯根周囲に新生骨による不透過部分が認められた。One month after the operation, the fixation of the jaw bone and the tooth root was observed, and two months later, a strong connection was exhibited. In X-ray photography,
An opaque part due to the new bone was found around the root of the tooth.
３ケ月目に上部構造を装着したが、以後１年間にわた
り、歯肉、顎骨に異常は認められず、人工歯根として機
能した。The superstructure was mounted on the third month, but over the following year, no abnormalities were observed in the gingiva and jawbone, and it functioned as an artificial tooth root.
第１図は，本発明の実施例を示す正面図、第２図（ａ）
は第１図の底面を示す図、第２図（ｂ）は第１図の上面
を示す図、第３図は第１図の一部を示す図、第４図は本
発明の実施例を示す部分的断面とした正面図、第５図は
第４図に示す人工歯根を生体骨組織へ埋入した時の一部
を断面とした図である。 01……歯根部、 02……義歯装着部、 １……ネジ部、 ２……カット面、 ３……凹部、 ４……凸部、 ５……平面、 ６……生体親和性部材。FIG. 1 is a front view showing an embodiment of the present invention, and FIG.
FIG. 2 shows the bottom view of FIG. 1, FIG. 2 (b) shows the top view of FIG. 1, FIG. 3 shows a part of FIG. 1, and FIG. 4 shows an embodiment of the present invention. FIG. 5 is a front view showing a partial cross section, and FIG. 5 is a cross section showing a part of the artificial tooth root shown in FIG. 4 when it is embedded in a living bone tissue. 01: root portion, 02: denture mounting portion, 1: screw portion, 2: cut surface, 3: concave portion, 4: convex portion, 5: flat surface, 6: biocompatible member.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 秦 美治 東京都東村山市富士見町１―２―54 富 士見台４―207 審査官 鈴木 寛治 (56)参考文献 特開 昭58−116352（ＪＰ，Ａ) 特開 昭59−11843（ＪＰ，Ａ) 特公 昭52−9955（ＪＰ，Ｂ２) 特公 昭52−23514（ＪＰ，Ｂ２) ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Miji Hata 1-2-54 Fujimi-cho, Higashimurayama-shi, Tokyo 4-207 Fujimidai 4-207 Examiner Kanji Suzuki (56) References JP-A-58-116352 (JP) JP-A-59-11843 (JP, A) JP-B-52-9555 (JP, B2) JP-B-52-23514 (JP, B2)
Claims (1)
は、その軸方向にカット面２を施してなるネジ部１、歯
冠装着部方向に形成された凸部４、前記ネジ部１と凸部
４との間に一様に配置された凹部３を有する人工歯根。1. A threaded portion 1 having a continuous projection on the periphery and having a cut surface 2 formed in the axial direction of the projection, a projection 4 formed in the direction of a crown mounting portion, and the screw An artificial tooth having a concave portion 3 uniformly disposed between the portion 1 and the convex portion 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63316225A JP2725194B2 (en) | 1988-12-16 | 1988-12-16 | Artificial root |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63316225A JP2725194B2 (en) | 1988-12-16 | 1988-12-16 | Artificial root |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02161939A JPH02161939A (en) | 1990-06-21 |
| JP2725194B2 true JP2725194B2 (en) | 1998-03-09 |
Family
ID=18074700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63316225A Expired - Fee Related JP2725194B2 (en) | 1988-12-16 | 1988-12-16 | Artificial root |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2725194B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4691437B2 (en) * | 2005-11-25 | 2011-06-01 | 株式会社アドバンス | Dental implant |
| KR102085066B1 (en) * | 2011-06-02 | 2020-03-05 | 엠아이에스 임플란츠 테크놀러지스 리미티드 | Dental implant |
| JP5891150B2 (en) | 2012-09-07 | 2016-03-22 | 株式会社アドバンス | Method for producing dental implant |
| JP6053829B2 (en) * | 2013-01-18 | 2016-12-27 | 株式会社ジーシー | Implant |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS529955A (en) * | 1975-07-11 | 1977-01-25 | Matsushita Electric Ind Co Ltd | Air-conditioning and heating device |
| JPS5223514A (en) * | 1975-08-19 | 1977-02-22 | Showa Denko Kk | Treatment method for metal melt |
| JPS58116352A (en) * | 1981-12-17 | 1983-07-11 | 旭光学工業株式会社 | Apatite artificial tooth root |
| JPS5911843A (en) * | 1982-07-12 | 1984-01-21 | 日本特殊陶業株式会社 | Dental implant for mounting denture |
-
1988
- 1988-12-16 JP JP63316225A patent/JP2725194B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02161939A (en) | 1990-06-21 |
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