JPH09122151A - Magnetic attachment for stabilizing denture - Google Patents
Magnetic attachment for stabilizing dentureInfo
- Publication number
- JPH09122151A JPH09122151A JP28156195A JP28156195A JPH09122151A JP H09122151 A JPH09122151 A JP H09122151A JP 28156195 A JP28156195 A JP 28156195A JP 28156195 A JP28156195 A JP 28156195A JP H09122151 A JPH09122151 A JP H09122151A
- Authority
- JP
- Japan
- Prior art keywords
- case
- permanent magnet
- magnetic material
- magnetic
- keeper
- 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
- 230000000087 stabilizing effect Effects 0.000 title claims abstract description 17
- 239000000696 magnetic material Substances 0.000 claims abstract description 47
- 238000007789 sealing Methods 0.000 claims abstract description 14
- 239000000203 mixture Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 abstract description 17
- 238000003466 welding Methods 0.000 abstract description 5
- 230000004907 flux Effects 0.000 description 31
- 229910001220 stainless steel Inorganic materials 0.000 description 11
- 238000005260 corrosion Methods 0.000 description 8
- 230000007797 corrosion Effects 0.000 description 8
- 239000010935 stainless steel Substances 0.000 description 8
- 229910001172 neodymium magnet Inorganic materials 0.000 description 6
- 229910000859 α-Fe Inorganic materials 0.000 description 5
- 101150065537 SUS4 gene Proteins 0.000 description 4
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 4
- 238000010009 beating Methods 0.000 description 4
- 229920006334 epoxy coating Polymers 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005498 polishing Methods 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000007943 implant Substances 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 210000000214 mouth Anatomy 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 241000723438 Cercidiphyllum japonicum Species 0.000 description 1
- 229910018104 Ni-P Inorganic materials 0.000 description 1
- 229910018536 Ni—P Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000007772 electroless plating Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 230000001815 facial effect Effects 0.000 description 1
- 229910001004 magnetic alloy Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229910000938 samarium–cobalt magnet Inorganic materials 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 210000000332 tooth crown Anatomy 0.000 description 1
Landscapes
- Hard Magnetic Materials (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、磁気吸引力を利用
した義歯安定用磁性アタッチメントに関し、歯根部に埋
設される根面板に接着された磁性ステンレス鋼よりなる
保持板と義歯床内に埋設される永久磁石構造体からな
り、義歯を保持する補綴に使用するための義歯安定用磁
性アタッチメントに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic attachment for stabilizing a denture using a magnetic attraction force. The denture base is embedded in a denture base and a holding plate made of magnetic stainless steel adhered to a root plate embedded in a tooth root. The present invention relates to a magnetic attachment for stabilizing a denture for use in a prosthesis that holds a denture, the magnetic attachment including a permanent magnet structure.
【０００２】[0002]
【従来の技術】義歯を口腔内に固定するのに際して、永
久磁石と磁性合金との間に作用する磁気吸引力を利用す
る試みは従来からすでに種々行われており、例えば「To
mas R.Jackson著オーラル・マキシロフェイシャル・イ
ンプラント，Vol.1（１９８７），No.2，７７〜８９
頁」に記載のオッセオインテレイテッド・インプラント
に対しての希土類磁石による維持装置の応用に種々記録
されている。この種の義歯を実用化するためには、人体
に対して無害であることが立証されている材料からなる
ケース内に永久磁石が完全に密封されていること、外部
への漏洩磁束が小さいこと等が必要条件とされており、
例えば図４に示すような構成の義歯安定用磁性アタッチ
メントが使用されてきた。2. Description of the Related Art Various attempts have been made in the past to utilize a magnetic attraction force acting between a permanent magnet and a magnetic alloy when fixing a denture in the oral cavity.
mas R. Jackson, Oral Maxiro Facial Implant, Vol.1 (1987), No.2, 77-89
The application of the rare earth magnet maintenance device to the osseointegrated implant described in "Page" is variously recorded. In order to put this kind of denture into practical use, the permanent magnet must be completely sealed in a case made of a material that has been proved to be harmless to the human body, and the leakage flux to the outside must be small. Etc. are required conditions,
For example, a magnetic attachment for stabilizing a denture having a structure as shown in FIG. 4 has been used.
【０００３】図４は、永久磁石構造体１０とキーパー２
０とからなる義歯安定用磁性アタッチメント３０であ
る。図４において、１は永久磁石、２はケース、１３は
シール部材である。シール部材は１３は、シール縁部材
１４とシール中央部材１５とにより構成され、シーム溶
接によって一体に形成されている。また、シール部材１
３とケース２とは、シーム溶接１６によって一体化され
ている。図４において、永久磁石１から出た磁束は、ケ
ース２、キーパー２０、シール中央部材１５を経て永久
磁石１に戻る。FIG. 4 shows a permanent magnet structure 10 and a keeper 2.
The magnetic attachment 30 for stabilizing the denture is composed of 0 and 0. In FIG. 4, 1 is a permanent magnet, 2 is a case, and 13 is a seal member. The seal member 13 is composed of a seal edge member 14 and a seal center member 15, and is integrally formed by seam welding. In addition, the seal member 1
3 and the case 2 are integrated by seam welding 16. In FIG. 4, the magnetic flux emitted from the permanent magnet 1 returns to the permanent magnet 1 through the case 2, the keeper 20, and the seal center member 15.
【０００４】図２は、義歯安定用磁性アタッチメントを
使用した義歯固定用手段の例を示す要部縦断面図であ
る。図２において、７は歯根内に埋設される根面部材で
あり、その上端面に磁性材料ステンレス鋼よりなるキー
パー２０を備え、縦断面形状が略Ｔ字型に形成される。
８は義歯床であり、この義歯床８内に前記図４に示す永
久磁石構造体１０を、そのシール部材１３側が根面部材
７と対向するように設置する。上記の構成により、永久
磁石構造体１０と根面部材７との間には磁気的吸引力が
作用し、この磁気的吸引力によって義歯床８は歯根９に
押し付けられ、義歯１１を口腔内に安定させることがで
きるのである。FIG. 2 is a longitudinal sectional view of an essential part showing an example of artificial tooth fixing means using a magnetic attachment for stabilizing artificial teeth. In FIG. 2, reference numeral 7 denotes a root member that is embedded in the tooth root. The root member is provided with a keeper 20 made of a magnetic material of stainless steel on its upper end surface, and has a substantially T-shaped vertical cross section.
Reference numeral 8 denotes a denture base. The permanent magnet structure 10 shown in FIG. 4 is installed in the denture base 8 such that the seal member 13 side faces the root member 7. With the above configuration, a magnetic attraction force acts between the permanent magnet structure 10 and the root member 7, and the denture base 8 is pressed against the tooth root 9 by this magnetic attraction force, so that the denture 11 is placed in the oral cavity. It can be stabilized.
【０００５】[0005]
【発明が解決しようとする課題】上記構成の永久磁石構
造体１０は、下記のように使用されてきた。すなわち、
図３に示すように天然歯であった歯冠部に相当する空間
に義歯床８と人工歯１１義歯として配置され、義歯床８
の中に、永久磁石構造体１０が埋入される。図３に示す
臼歯部の場合には、根面部材７と対合歯との垂直的な空
隙ｈは約４．０ｍｍであり、平行的な空隙は歯径部の最
小距離であるｄが約５．５ｍｍである。このように限定
された空隙に現在は吸引力を２５０ｇ以上に保ちなが
ら、できるだけ寸法の小さい永久磁石構造体として直径
約４．０ｍｍ、厚み２．１ｍｍのものが使用されてい
る。しかし、更に義歯を違和感無く使用するために、永
久磁石構造体１０の形状を小型化することが要求されて
いる。しかしながら、従来磁性アタッチメントの永久磁
石構造体は、磁性材料として飽和磁束密度９ｋＧ程度の
ステンレス鋼、永久磁石としてＳｍＣｏ磁石を用いてい
たことから、永久磁石構造体１０を小型化すると吸引力
が低下するという問題があった。本発明は、上記従来技
術における問題点を解決し、上記垂直的な空隙ｈおよび
平行的な空隙ｄの中に十分余裕をもって埋入できるよう
な小型の永久磁石構造体であり、かつ義歯を固定するの
に適切な吸引力を有する義歯安定用磁性アタッチメント
を提供することを目的とする。The permanent magnet structure 10 having the above structure has been used as follows. That is,
As shown in FIG. 3, the denture base 8 and the artificial tooth 11 are arranged as a denture in a space corresponding to a crown portion which is a natural tooth.
The permanent magnet structure 10 is embedded therein. In the case of the molar portion shown in FIG. 3, the vertical gap h between the root member 7 and the opposing tooth is about 4.0 mm, and the parallel gap has a minimum distance d of the tooth diameter portion of about d. It is 5.5 mm. Currently, a permanent magnet structure having a diameter of about 4.0 mm and a thickness of 2.1 mm is used as small as possible while keeping the attraction force at 250 g or more in such a limited space. However, in order to use the denture more comfortably, it is required to reduce the size of the permanent magnet structure 10. However, since the permanent magnet structure of the magnetic attachment has conventionally used the stainless steel having a saturation magnetic flux density of about 9 kG as the magnetic material and the SmCo magnet as the permanent magnet, the attraction force decreases when the permanent magnet structure 10 is downsized. There was a problem. The present invention is a small-sized permanent magnet structure that solves the above-mentioned problems in the prior art and can be embedded in the vertical gap h and the parallel gap d with a sufficient margin, and fixes the denture. It is an object of the present invention to provide a magnetic attachment for stabilizing a denture, which has an appropriate suction force for applying.
【０００６】[0006]
【課題を解決するための手段】本発明は、永久磁石構造
体に用いる磁性材料として、高い飽和磁束密度を有する
磁性材料を磁性材料を用いることにより、永久磁石構造
体を小型化してても優れた吸引力を有する磁性アタッチ
メントを得るものである。本発明は、一方に開口部を有
する磁性材料からなるケースと、ケース内に収納される
永久磁石と、ケースの開口部を密封し磁性部と非磁性部
を有するシール部材とからなる永久磁石構造体と、磁性
材料からなるキーパーとから構成される義歯安定用磁性
アタッチメントであって、ケースが、重量割合で、Ｃ
ｒ：１５．５〜１８．５％、残部がＦｅの組成を有する
磁性材料であり、キーパーが、重量割合で、Ｃｒ：２
８．０〜３２．０％、残部がＦｅの組成を有する磁性材
料である義歯安定用磁性アタッチメントである。本発明
において、シール部材は、非磁性材料からなるシール縁
部材と、重量割合でＣｒ：１５．５〜１８．５％、残部
がＦｅの組成を有する磁性材料からなるシール中央部材
とにより構成されることが望ましい。また、ケースおよ
び／またはシール中央部材は、重量割合で、Ｃｒ：１
５．５〜１８．５％、Ｍｏ：０．０５〜１．５％、残部
がＦｅの組成を有する磁性材料を用いることができる。
さらに、キーパーは、重量割合で、Ｃｒ：２８．０〜３
２．０％、Ｍｏ：１．５〜２．５、残部がＦｅの組成を
有する磁性材料を用いることができる。The present invention is excellent even when the permanent magnet structure is downsized by using a magnetic material having a high saturation magnetic flux density as the magnetic material used for the permanent magnet structure. To obtain a magnetic attachment having an attractive force. The present invention provides a permanent magnet structure including a case made of a magnetic material having an opening on one side, a permanent magnet housed in the case, and a seal member that seals the opening of the case and has a magnetic portion and a non-magnetic portion. A magnetic attachment for stabilizing a denture, comprising a body and a keeper made of a magnetic material, wherein the case has a weight ratio of C
r: 15.5 to 18.5%, the balance being a magnetic material having a composition of Fe, and the keeper in a weight ratio of Cr: 2
A magnetic attachment for stabilizing a denture, which is a magnetic material having a composition of 8.0 to 32.0% and the balance being Fe. In the present invention, the seal member is composed of a seal edge member made of a non-magnetic material, and a seal center member made of a magnetic material having a composition of Cr: 15.5 to 18.5% by weight and a balance of Fe. Is desirable. The weight ratio of the case and / or the central member of the seal is Cr: 1.
A magnetic material having a composition of 5.5 to 18.5%, Mo: 0.05 to 1.5%, and the balance of Fe can be used.
Furthermore, the keeper is Cr: 28.0-3 by weight ratio.
A magnetic material having a composition of 2.0%, Mo: 1.5 to 2.5, and the balance of Fe can be used.
【０００７】ケースおよび／またはシール中央部材に用
いる磁性材料のＣｒ含有量が１５．５ｗｔ％未満である
と耐食性が不十分となる。Ｃｒ含有量が、１８．５ｗｔ
％を越えると飽和磁束密度Ｂｓが低下してしまうため吸
引力が低下する。また、耐食性向上のため、０．０５〜
１．５ｗｔ％の範囲でＭｏを添加することができる。ケ
ースおよび／またはシール中央部材に用いる磁性材料の
飽和磁束密度Ｂｓは１．３Ｔ以上を有するが、Ｂｓ１．
５以上とすることによりさらに高い吸引力が得られる。
キーパーは、磁石構造体との磁気的な吸引により、磁石
構造体を保持する働きを有する。本発明にかかる磁石構
造体の優れた吸引力を生かすためには、キーパーを形成
する磁性材料として飽和磁束密度Ｂｓ９ｋＧ以上を有す
る材料を用いることが望ましい。飽和磁束密度Ｂｓ９ｋ
Ｇ以上を有する材料として、Ｃｒ：２８．０〜３２．０
％、残部がＦｅの組成を有する磁性材料、またはＣｒ：
２８．０〜３２．０％、Ｍｏ：１．５〜２．５％、残部
がＦｅの組成を有する磁性材料を用いることが望まし
い。Ｃｒ含有量が３２ｗｔ％を越えると、飽和磁束密度
が低下し、本発明に係る高い吸引力を有する永久磁石構
造体から出る磁束が飽和してしまうので、３２ｗｔ％以
下とする。Ｃｒを２８．０ｗｔ％以上添加するのは耐食
性向上のためであり、２８．５ｗｔ％以上とすることが
さらに望ましい。また、耐食性向上のため、Ｍｏを１．
５〜２．５ｗｔ％添加することが望ましい。ケースおよ
び／またはシール中央部材に用いる磁性材料、ならびに
キーパーに用いる磁性材料は、耐食性向上のため、Ｃ
０．２ｗｔ％以下、Ｓｉ０．５０ｗｔ％以下、Ｍｎ０．
５０ｗｔ％以下とすることが望ましい。特にＣは、腐食
の起点となるＣ炭化物を形成するので、０．１ｗｔ％以
下とするのがさらに好ましい。If the Cr content of the magnetic material used for the case and / or the central member of the seal is less than 15.5 wt%, the corrosion resistance becomes insufficient. Cr content is 18.5 wt
If it exceeds%, the saturation magnetic flux density Bs is lowered, and the attractive force is lowered. Moreover, in order to improve the corrosion resistance,
Mo can be added in the range of 1.5 wt%. Although the saturation magnetic flux density Bs of the magnetic material used for the case and / or the central member of the seal has 1.3 T or more, Bs1.
By setting it to 5 or more, a higher suction force can be obtained.
The keeper has a function of holding the magnet structure by magnetic attraction with the magnet structure. In order to take advantage of the excellent attractive force of the magnet structure according to the present invention, it is desirable to use a material having a saturation magnetic flux density Bs9 kG or more as a magnetic material forming the keeper. Saturation magnetic flux density Bs9k
As a material having G or more, Cr: 28.0 to 32.0
%, The balance is Fe, the magnetic material, or Cr:
It is desirable to use a magnetic material having a composition of 28.0 to 32.0%, Mo: 1.5 to 2.5%, and the balance being Fe. If the Cr content exceeds 32 wt%, the saturation magnetic flux density decreases and the magnetic flux emitted from the permanent magnet structure having a high attractive force according to the present invention is saturated, so the content is set to 32 wt% or less. The addition of 28.0 wt% or more of Cr is for improving the corrosion resistance, and it is more desirable to add 28.5 wt% or more. Further, in order to improve the corrosion resistance, Mo is 1.
It is desirable to add 5 to 2.5 wt%. The magnetic material used for the case and / or the central member of the seal and the magnetic material used for the keeper are made of C to improve corrosion resistance.
0.2 wt% or less, Si 0.50 wt% or less, Mn0.
It is desirable to set it to 50 wt% or less. In particular, C forms C carbide which is a starting point of corrosion, so it is more preferable to set C to 0.1 wt% or less.
【０００８】永久磁石は、永久磁石構造体を小型化する
ため残留磁束密度Ｂｒ１．０Ｔ以上の磁石を用いること
が望ましく、そのような磁石としてＮｄ−Ｆｅ−Ｂ系磁
石を用いることができる。Ｎｄ−Ｆｅ−Ｂ系磁石は、酸
化されやすいＮｄ等の希土類元素を含むため、磁石表面
に１０〜４０μｍの耐食性皮膜を形成し、耐食性を高め
ることが望ましい。耐食性皮膜としては、樹脂塗装、Ｎ
ｉ，Ｃｕ等の電解めっき膜、Ｎｉ−Ｐ等の無電解めっき
膜、金属塗装等からなる単層膜、またはこれらの複合膜
を用いることができる。シール部材は、磁性部と非磁性
部とから構成され、磁性と非磁性を合わせもつ複合磁性
部材を用いても、磁性部材と非磁性部材とを接合しても
どちらでもよい。As the permanent magnet, it is desirable to use a magnet having a residual magnetic flux density Br of 1.0 T or more in order to miniaturize the permanent magnet structure, and an Nd-Fe-B system magnet can be used as such a magnet. Since the Nd-Fe-B based magnet contains a rare earth element such as Nd which is easily oxidized, it is desirable to form a corrosion resistant film of 10 to 40 μm on the surface of the magnet to enhance the corrosion resistance. Resin coating, N
An electrolytic plating film of i, Cu or the like, an electroless plating film of Ni-P or the like, a single layer film made of metal coating or the like, or a composite film of these can be used. The seal member is composed of a magnetic portion and a non-magnetic portion, and a composite magnetic member having both magnetism and non-magnetism may be used, or a magnetic member and a non-magnetic member may be joined together.
【０００９】また、キーパーは、取扱いを容易にするた
め、およびロスト・ワックス法による根面板とキーパー
の鋳接時に鋳型内にキーパーを固定するために非磁性材
料からなる取手を取り付けることが好ましい。図５に、
取手を有するキーパーを示す。ロスト・ワックス法によ
る根面板とキーパーの鋳接について図６（Ａ）を用いて
説明する。図６（Ａ）において、３１は根面板形状のロ
ウ模型であり、３２は埋没材である。ロウ模型３１の所
定の位置に取手２２を有するキーパー２０を配置し、ロ
ウ模型およびキーパーを埋没材３２により埋没し造型す
る。キーパー２０の取手２２は、脱ロウした際、キーパ
ーが鋳型内で移動しないよう埋没材の中で固定される。
ロウ模型を加熱して脱ロウした後、湯口３３から根面板
合金の溶湯を鋳湯し根面板を鋳造するとともにキーパー
を鋳接する。取手を有するキーパーを用いて根面板にキ
ーパーを鋳接した後、根面板から突出した取手は切断さ
れ、図６（Ｂ）に示すようなキーパー２０と一体に形成
された根面板３４が得られる。キーパーの取手の取付位
置を図５に示すようにキーパー上面より低い位置にする
ことにより、根面板内に残存した取手が根面板合金で覆
われ、キーパーと根面板の結合維持力が向上する。Further, the keeper is preferably provided with a handle made of a non-magnetic material for facilitating the handling and for fixing the keeper in the mold at the time of casting the root plate and the keeper by the lost wax method. In FIG.
6 shows a keeper with a handle. Casting of the root plate and the keeper by the lost wax method will be described with reference to FIG. In FIG. 6 (A), 31 is a root plate wax model and 32 is an investment material. The keeper 20 having the handle 22 is arranged at a predetermined position of the wax model 31, and the wax model and the keeper are buried by the investment material 32 to mold. The handle 22 of the keeper 20 is fixed in the investment material so that the keeper does not move in the mold when the wax is removed.
After the wax model is heated and dewaxed, the melt of the root plate alloy is cast from the sprue 33 to cast the root plate and the keeper is welded. After the keeper is cast on the root plate by using the keeper having the handle, the handle protruding from the root plate is cut to obtain a root plate 34 integrally formed with the keeper 20 as shown in FIG. 6 (B). . By setting the attachment position of the handle of the keeper to a position lower than the upper surface of the keeper as shown in FIG. 5, the handle remaining in the root plate is covered with the root plate alloy, and the force for maintaining the connection between the keeper and the root plate is improved.
【００１０】[0010]
【発明の実施の態様】直径が３．０ｍｍ〜４．５ｍｍ、
厚み１．０〜１．６の永久磁石構造体、および永久磁石
構造体と同一の直径を有し、厚みが０．７〜１．１ｍｍ
のキーパーを種々試作した。吸引力は、３７０ｇｆ〜９
１０ｇｆをねらった。これは、臼歯用として必要な吸引
力である。図１は、一方に開口部を有する磁性材料から
なるケース２と、ケース内に収納される永久磁石１と、
そのケース開口部を密封するシール部材１３とで構成さ
れる永久磁石構造体の断面図である。シール部材１３
は、非磁性材料からなるシール縁部材１４と、磁性材料
からシール中央部材１５とを勘合させてなる。組立てた
状態で生ずるケース２とシール部材１３の突合せ部およ
びシール縁部材１４とシール中央部材１５の嵌合部は、
レーザ溶接により接合した。実施例１〜４は、図１に示
す永久磁石の直径Ｄ２と厚みＨ２、ケース２の外径Ｄ１
と厚みＨ１、シール部材の厚みＨ３、シール縁部材の幅
Ｇを種々変えて、永久磁石構造体を作製し、吸引力を評
価した。BEST MODE FOR CARRYING OUT THE INVENTION Diameter of 3.0 mm to 4.5 mm,
A permanent magnet structure having a thickness of 1.0 to 1.6 and the same diameter as the permanent magnet structure, and a thickness of 0.7 to 1.1 mm
A variety of keepers were manufactured. Suction force is 370gf-9
I aimed at 10 gf. This is the suction force required for molars. FIG. 1 shows a case 2 made of a magnetic material having an opening on one side, a permanent magnet 1 housed in the case,
It is sectional drawing of the permanent magnet structure comprised with the sealing member 13 which seals the case opening part. Seal member 13
Includes a seal edge member 14 made of a non-magnetic material and a seal central member 15 made of a magnetic material. The abutting portion of the case 2 and the seal member 13 and the fitting portion of the seal edge member 14 and the seal center member 15 which occur in the assembled state are
It joined by laser welding. In Examples 1 to 4, the diameter D2 and the thickness H2 of the permanent magnet shown in FIG. 1 and the outer diameter D1 of the case 2 are shown.
The thickness H1, the thickness H3 of the seal member, and the width G of the seal edge member were variously changed to fabricate a permanent magnet structure, and the attractive force was evaluated.
【００１１】（実施例１）残留磁束密度Ｂｒ＝１３ｋ
Ｇ、保磁力ｉＨｃ＝１５ｋＯｅのＮｄ−Ｆｅ−Ｂ磁石１
を、直径Ｄ２＝３．４６ｍｍ、厚みＨ２＝０．７ｍｍに
加工し、表面に２５μｍのエポキシ塗装をし、矢印の方
向に着磁して、フェライト系ステンレスＳＵＳ４３０
（磁性材料：１７．７Ｃｒ−ｂａｌＦｅ）よりなる外径
Ｄ１＝４．５ｍｍ、厚み１．５２ｍｍのケース２に挿入
し、その後、厚さＨ３＝０．２１ｍｍのオーステナイト
系ステンレスＳＵＳ３１６Ｌ（非磁性材料）のシール縁
部材１４にケースと同材質からなるシール中央部材１５
を嵌合させてなるシール部材１３で蓋をし、突き合わせ
部をレーザー溶接して密封して永久磁石構造体を作製し
た。なお、ＳＵＳ４３０の飽和磁束密度は１６ｋＧであ
り、Ｇ＝０．２５ｍｍである。ビート取り研磨後のＨ１
＝１．５ｍｍとなった。フェライト系ステンレスＳＵＳ
４４７Ｊ１（磁性材料：３０．０Ｃｒ−１．８Ｍｏ−ｂ
ａｌＦｅ、飽和磁束密度Ｂｓ１２ｋＧ）よりなる直径
４．５ｍｍ、厚み０．８ｍｍのキーパーを永久磁石構造
体に吸着させて、これらを垂直に引き離す力を吸引力と
定義して測定したところ本発明の永久磁石構造体の直径
Ｄ１＝４．５ｍｍの吸引力は９１０ｇｆであった。Example 1 Residual magnetic flux density Br = 13k
G, Nd-Fe-B magnet 1 with coercive force iHc = 15 kOe
Is processed into a diameter D2 = 3.46 mm and a thickness H2 = 0.7 mm, 25 μm of epoxy coating is applied on the surface, magnetized in the direction of the arrow, and ferritic stainless steel SUS430.
(Magnetic material: 17.7Cr-balFe) Outer diameter D1 = 4.5 mm, thickness 1.52 mm, and inserted into Case 2, then thickness H3 = 0.21 mm austenitic stainless steel SUS316L (non-magnetic material) The seal center member 15 made of the same material as the case is attached to the seal edge member 14 of
The sealing member 13 is fitted to the lid, the lid is covered, and the butted portions are laser-welded and sealed to produce a permanent magnet structure. The saturation magnetic flux density of SUS430 is 16 kG, and G = 0.25 mm. H1 after beating and polishing
= 1.5 mm. Ferritic stainless SUS
447J1 (magnetic material: 30.0Cr-1.8Mo-b
A keeper having a diameter of 4.5 mm and a thickness of 0.8 mm made of alFe and a saturation magnetic flux density Bs12 kG) was adsorbed to a permanent magnet structure, and the force for vertically separating them was measured as an attractive force. The attraction force of the magnet structure having a diameter D1 of 4.5 mm was 910 gf.
【００１８】（従来例１）永久磁石として残留磁束密度
Ｂｒ＝９．５ｋＧ、保磁力ｉＨｃ＝１４ｋＯｅのＳｍＣ
ｏ5磁石、ケースおよびシール中央部材として飽和磁束
密度Ｂｓ＝１２ｋＧのフェライト系ステンレスＳＵＳ４
４７Ｊ１を使用し、Ｇ＝０．２５ｍｍとした以外、実施
例１と同様の方法で永久磁石構造体を作製した。ケース
と同材質の直径４．５ｍｍ、厚さ１．０ｍｍのキーパー
を永久磁石構造体に吸着させて、吸引力を測定したとこ
ろ４４０ｇｆであった。本発明例である実施例１は、従
来例１に比し、２倍以上の吸引力を示した。(Conventional Example 1) SmC having a residual magnetic flux density Br = 9.5 kG and a coercive force iHc = 14 kOe as a permanent magnet.
o 5 Ferrite stainless steel SUS4 with saturation magnetic flux density Bs = 12 kG as magnet, case and seal center member
A permanent magnet structure was produced in the same manner as in Example 1 except that 47J1 was used and G = 0.25 mm. A keeper of the same material as the case having a diameter of 4.5 mm and a thickness of 1.0 mm was adsorbed to the permanent magnet structure, and the attractive force was measured and found to be 440 gf. Example 1, which is an example of the present invention, showed a suction force that was more than twice that of Conventional Example 1.
【００１９】（実施例２）残留磁束密度Ｂｒ＝１３ｋ
Ｇ、保磁力ｉＨｃ＝１５ｋＯｅのＮｄ−Ｆｅ−Ｂ磁石１
を、直径Ｄ２＝３．０６ｍｍ、厚みＨ２＝０．７ｍｍに
加工し、表面に２０μｍのエポキシ塗装をし、矢印の方
向に着磁して、フェライト系ステンレスＳＵＳ４３０
（磁性材料：１７．７Ｃｒ−ｂａｌＦｅ）よりなる外径
Ｄ１＝４．０ｍｍ、厚み１．５２ｍｍのケース２に挿入
し、その後、厚さＨ３＝０．２１ｍｍのオーステナイト
系ステンレスＳＵＳ３１６Ｌ（非磁性材料）のシール縁
部材１４にケースと同材質からなるシール中央部材１５
を嵌合させてなるシール部材１３で蓋をし、突き合わせ
部をレーザー溶接して密封して永久磁石構造体を作製し
た。なお、ＳＵＳ４３０の飽和磁束密度は１６ｋＧであ
り、Ｇ＝０．２５ｍｍである。ビート取り研磨後のＨ１
＝１．５ｍｍとなった。フェライト系ステンレスＳＵＳ
４４７Ｊ１（磁性材料：２９．５Ｃｒ−２．１Ｍｏ−ｂ
ａｌＦｅ、飽和磁束密度Ｂｓ１２ｋＧ）よりなる直径
４．０ｍｍ、厚み０．８ｍｍのキーパーを永久磁石構造
体に吸着させて、これらを垂直に引き離す力を吸引力と
定義して測定したところ本発明の永久磁石構造体の直径
Ｄ１＝４．０ｍｍの吸引力は７１０ｇｆであった。(Embodiment 2) Residual magnetic flux density Br = 13k
G, Nd-Fe-B magnet 1 with coercive force iHc = 15 kOe
Is processed into a diameter D2 = 3.06 mm and a thickness H2 = 0.7 mm, a 20 μm epoxy coating is applied on the surface, and magnetized in the direction of the arrow to obtain a ferritic stainless steel SUS430.
(Magnetic material: 17.7 Cr-balFe), inserted into Case 2 having an outer diameter D1 of 4.0 mm and a thickness of 1.52 mm, and then, austenitic stainless steel SUS316L having a thickness H3 of 0.21 mm (nonmagnetic material). The seal center member 15 made of the same material as the case is attached to the seal edge member 14 of
The sealing member 13 is fitted to the lid, the lid is covered, and the butted portions are laser-welded and sealed to produce a permanent magnet structure. The saturation magnetic flux density of SUS430 is 16 kG, and G = 0.25 mm. H1 after beating and polishing
= 1.5 mm. Ferritic stainless SUS
447J1 (magnetic material: 29.5Cr-2.1Mo-b
When a keeper of 4.0 mm in diameter and 0.8 mm in thickness composed of alFe and saturation magnetic flux density Bs12 kG) was attracted to a permanent magnet structure and the force for vertically separating them was defined as an attraction force and measured, it was found that The attraction force of the magnet structure having a diameter D1 of 4.0 mm was 710 gf.
【００２０】（従来例２）永久磁石として残留磁束密度
Ｂｒ＝９．５ｋＧ、保磁力ｉＨｃ＝１４ｋＯｅのＳｍＣ
ｏ5磁石、ケースおよびシール中央部材として飽和磁束
密度Ｂｓ＝１２ｋＧのフェライト系ステンレスＳＵＳ４
４７Ｊ１を使用し、Ｇ＝０．２５ｍｍとした以外、実施
例２と同様の方法で永久磁石構造体を作製した。ケース
と同材質の直径４．０ｍｍ、厚さ１．０ｍｍのキーパー
を永久磁石構造体に吸着させて、吸引力を測定したとこ
ろ３８７ｇｆであった。本発明例である実施例２は、従
来例２に比し、約１．９倍の吸引力を示した。(Prior art example 2) As a permanent magnet, SmC with residual magnetic flux density Br = 9.5 kG and coercive force iHc = 14 kOe.
o 5 Ferrite stainless steel SUS4 with saturation magnetic flux density Bs = 12 kG as magnet, case and seal center member
A permanent magnet structure was produced in the same manner as in Example 2 except that 47J1 was used and G = 0.25 mm. A keeper having the same material as the case and having a diameter of 4.0 mm and a thickness of 1.0 mm was adsorbed to the permanent magnet structure, and the attractive force was measured to be 387 gf. Example 2, which is an example of the present invention, exhibited a suction force about 1.9 times that of Conventional Example 2.
【００２１】（実施例３）残留磁束密度Ｂｒ＝１３ｋ
Ｇ、保磁力ｉＨｃ＝１５ｋＯｅのＮｄ−Ｆｅ−Ｂ磁石１
を、直径Ｄ２＝２．７０ｍｍ、厚みＨ２＝０．７ｍｍに
加工し、表面に２５μｍのエポキシ塗装をし、矢印の方
向に着磁して、フェライト系ステンレスＳＵＳ４３０
（磁性材料：１７．７Ｃｒ−ｂａｌＦｅ）よりなる外径
Ｄ１＝３．５ｍｍ、厚み１．５２ｍｍのケース２に挿入
し、その後、厚さＨ３＝０．２１ｍｍのオーステナイト
系ステンレスＳＵＳ３１６Ｌ（非磁性材料）のシール縁
部材１４にケースと同材質からなるシール中央部材１５
を嵌合させてなるシール部材１３で蓋をし、突き合わせ
部をレーザー溶接して密封して永久磁石構造体を作製し
た。なお、ＳＵＳ４３０の飽和磁束密度は１６ｋＧであ
り、Ｇ＝０．２５ｍｍである。ビート取り研磨後、Ｈ１
＝１．５ｍｍとなった。フェライト系ステンレスＳＵＳ
４４７Ｊ１（磁性材料：３０．５Ｃｒ−１．９Ｍｏ−ｂ
ａｌＦｅ、飽和磁束密度Ｂｓ１２ｋＧ）よりなる直径
３．５ｍｍ、厚み０．８ｍｍのキーパーを永久磁石構造
体に吸着させて、これらを垂直に引き離す力を吸引力と
定義して測定したところ本発明の永久磁石構造体の直径
Ｄ１＝３．５ｍｍの吸引力は５２０ｇｆであった。(Embodiment 3) Residual magnetic flux density Br = 13k
G, Nd-Fe-B magnet 1 with coercive force iHc = 15 kOe
Is processed into a diameter D2 = 2.70 mm and a thickness H2 = 0.7 mm, 25 μm of epoxy coating is applied on the surface, magnetized in the direction of the arrow, and ferritic stainless steel SUS430 is used.
(Magnetic material: 17.7Cr-balFe), which is inserted into the case 2 having an outer diameter D1 of 3.5 mm and a thickness of 1.52 mm, and then, has an austenitic stainless steel SUS316L having a thickness H3 of 0.21 mm (nonmagnetic material). The seal center member 15 made of the same material as the case is attached to the seal edge member 14 of
The sealing member 13 is fitted to the lid, the lid is covered, and the butted portions are laser-welded and sealed to produce a permanent magnet structure. The saturation magnetic flux density of SUS430 is 16 kG, and G = 0.25 mm. After beating and polishing, H1
= 1.5 mm. Ferritic stainless SUS
447J1 (magnetic material: 30.5Cr-1.9Mo-b
A keeper having a diameter of 3.5 mm and a thickness of 0.8 mm made of alFe and a saturation magnetic flux density Bs12 kG) was adsorbed to the permanent magnet structure, and the force for vertically separating them was measured as an attractive force. The attraction force with a diameter D1 of the magnet structure of 3.5 mm was 520 gf.
【００２２】（従来例３）永久磁石として残留磁束密度
Ｂｒ＝９．５ｋＧ、保磁力ｉＨｃ＝１４ｋＯｅのＳｍＣ
ｏ5磁石、ケースおよびシール中央部材として飽和磁束
密度Ｂｓ＝１２ｋＧのフェライト系ステンレスＳＵＳ４
４７Ｊ１を使用し、Ｇ＝０．２５ｍｍとした以外、実施
例３と同様の方法で永久磁石構造体を作製した。ケース
と同材質の直径３．５ｍｍ、厚さ１．０ｍｍのキーパー
を永久磁石構造体に吸着させて、吸引力を測定したとこ
ろ２８８ｇｆであった。本発明例である実施例３は、従
来例３に比し、約１．８倍の吸引力を示した。(Prior art example 3) SmC with a residual magnetic flux density Br = 9.5 kG and a coercive force iHc = 14 kOe as a permanent magnet.
o 5 Ferrite stainless steel SUS4 with saturation magnetic flux density Bs = 12 kG as magnet, case and seal center member
A permanent magnet structure was produced in the same manner as in Example 3 except that 47J1 was used and G = 0.25 mm. A keeper made of the same material as the case and having a diameter of 3.5 mm and a thickness of 1.0 mm was adsorbed to the permanent magnet structure, and the attractive force was measured to be 288 gf. Example 3, which is an example of the present invention, exhibited a suction force about 1.8 times that of Conventional Example 3.
【００２３】（実施例４）残留磁束密度Ｂｒ＝１３ｋ
Ｇ、保磁力ｉＨｃ＝１５ｋＯｅのＮｄ−Ｆｅ−Ｂ磁石１
を、直径Ｄ２＝２．７０ｍｍ、厚みＨ２＝０．７ｍｍに
加工し、表面に２０μｍのエポキシ塗装をし、矢印の方
向に着磁して、フェライト系ステンレスＳＵＳ４３０
（磁性材料：１７．７Ｃｒ−ｂａｌＦｅ）よりなる外径
Ｄ１＝３．０ｍｍ、厚み１．５２ｍｍのケース２に挿入
し、その後、厚さＨ３＝０．２１ｍｍのオーステナイト
系ステンレスＳＵＳ３１６Ｌ（非磁性材料）のシール縁
部材１４にケースと同材質からなるシール中央部材１５
を嵌合させてなるシール部材１３で蓋をし、突き合わせ
部をレーザー溶接により密封して永久磁石構造体を作製
した。なお、ＳＵＳ４３０の飽和磁束密度は１６ｋＧで
あり、Ｇ＝０．２５ｍｍである。ビート取り研磨後、Ｈ
１＝１．５ｍｍとなった。フェライト系ステンレスＳＵ
Ｓ４４７Ｊ１（磁性材料：３１．５Ｃｒ−１．７Ｍｏ−
ｂａｌＦｅ、飽和磁束密度Ｂｓ１２ｋＧ）よりなる直径
３．０ｍｍ、厚み０．８ｍｍのキーパーを永久磁石構造
体に吸着させて、これらを垂直に引き離す力を吸引力と
定義して測定したところ本発明の永久磁石構造体の直径
Ｄ１＝３．０ｍｍの吸引力は３７０ｇｆであった。(Embodiment 4) Residual magnetic flux density Br = 13k
G, Nd-Fe-B magnet 1 with coercive force iHc = 15 kOe
Is processed into a diameter D2 = 2.70 mm and a thickness H2 = 0.7 mm, a 20 μm epoxy coating is applied on the surface, and magnetized in the direction of the arrow to obtain a ferrite stainless steel SUS430.
(Magnetic material: 17.7 Cr-balFe), inserted into case 2 having an outer diameter D1 of 3.0 mm and a thickness of 1.52 mm, and then, austenitic stainless steel SUS316L (thickness H3 = 0.21 mm) (non-magnetic material). The seal center member 15 made of the same material as the case is attached to the seal edge member 14 of
The lid was covered with a sealing member 13 formed by fitting, and the butted portion was sealed by laser welding to produce a permanent magnet structure. The saturation magnetic flux density of SUS430 is 16 kG, and G = 0.25 mm. After beating and polishing, H
1 = 1.5 mm. Ferritic stainless SU
S447J1 (magnetic material: 31.5Cr-1.7Mo-
A keeper having a diameter of 3.0 mm and a thickness of 0.8 mm made of balFe and a saturation magnetic flux density Bs12 kG) was attracted to a permanent magnet structure, and the force for vertically separating them was defined as an attraction force and measured. The attraction force of the magnet structure having a diameter D1 of 3.0 mm was 370 gf.
【００２４】（従来例３）永久磁石として残留磁束密度
Ｂｒ＝９．５ｋＧ、保磁力ｉＨｃ＝１４ｋＯｅのＳｍＣ
ｏ5磁石、ケースおよびシール中央部材として飽和磁束
密度Ｂｓ＝１２ｋＧのフェライト系ステンレスＳＵＳ４
４７Ｊ１を使用し、Ｇ＝０．２５ｍｍとした以外、実施
例３と同様の方法で永久磁石構造体を作製した。ケース
と同材質の直径３．０ｍｍ、厚さ１．０ｍｍのキーパー
を永久磁石構造体に吸着させて、吸引力を測定したとこ
ろ１９０ｇｆであった。本発明例である実施例４は、従
来例４に比し、約１．９倍の吸引力を示した。(Conventional Example 3) SmC having a residual magnetic flux density Br = 9.5 kG and a coercive force iHc = 14 kOe as a permanent magnet.
o 5 Ferrite stainless steel SUS4 with saturation magnetic flux density Bs = 12 kG as magnet, case and seal center member
A permanent magnet structure was produced in the same manner as in Example 3 except that 47J1 was used and G = 0.25 mm. A keeper made of the same material as the case and having a diameter of 3.0 mm and a thickness of 1.0 mm was adsorbed to the permanent magnet structure and the attractive force was measured to be 190 gf. Example 4, which is an example of the present invention, exhibited a suction force about 1.9 times that of Conventional Example 4.
【００２５】[0025]
【発明の効果】以上述べたように、本発明によれば、前
歯部の歯冠が欠損した限られた空隙部に義歯床を通して
毎入される永久磁石構造体の寸法を小さくして、しか
も、永久磁石構造体とキーパーの吸引力も義歯を維持す
る力として十分満足するようにできたので、義歯の破折
が生じにくい。As described above, according to the present invention, the size of the permanent magnet structure that is inserted through the denture base into the limited space where the anterior tooth crown is missing is reduced, and Since the attraction force between the permanent magnet structure and the keeper can be sufficiently satisfied as a force for maintaining the denture, the denture is unlikely to break.
【図１】本発明の義歯安定用磁性アタッチメントの一実
施例を示す概略断面図である。FIG. 1 is a schematic cross-sectional view showing an embodiment of a magnetic attachment for stabilizing a denture according to the present invention.
【図２】義歯安定用磁性アタッチメントを義歯固定に用
いる方法の一例を示す図である。FIG. 2 is a diagram showing an example of a method of using a denture stabilizing magnetic attachment for fixing a denture.
【図３】臼歯部に永久磁石構造体を埋入する時に必要な
空隙を説明するための図である。FIG. 3 is a diagram for explaining a space required when a permanent magnet structure is embedded in a molar portion.
【図４】従来の永久磁石構造体の断面図である。FIG. 4 is a cross-sectional view of a conventional permanent magnet structure.
【図５】本発明に係るキーパーの概略を示す図である。FIG. 5 is a diagram showing an outline of a keeper according to the present invention.
【図６】（Ａ）根面板とキーパーとの鋳接方法を説明す
るための図である。 （Ｂ）根面板に鋳接されたキーパーの断面図である。FIG. 6 (A) is a view for explaining a method of casting and joining a root plate and a keeper. (B) It is sectional drawing of the keeper cast-contacted by the root plate.
１ 永久磁石、２ ケース、８ 義歯床、１０ 永久磁
石構造体、１１ 義歯１３ シール部材、１４ シール
縁部材、１５ シール中央部材、２０ キーパー、２１
キーパー本体、２２ 取手、３０ 義歯安定用磁性ア
タッチメント。DESCRIPTION OF SYMBOLS 1 permanent magnet, 2 case, 8 denture base, 10 permanent magnet structure, 11 denture 13 seal member, 14 seal edge member, 15 seal center member, 20 keeper, 21
Keeper body, 22 handle, 30 Magnetic attachment for stabilizing denture.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 水谷 紘 東京都日野市南平１丁目32番地１号 (72)発明者 中村 和夫 千葉県市川市南八幡４丁目12番５号京成サ ンコーポ市川904 (72)発明者 奥野 攻 宮城県仙台市泉区桂２丁目18番16号 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Hiro Mizutani 1-32, Minamidaira 1-chome, Hino City, Tokyo (72) Inventor Kazuo Nakamura 4-12-5 Minamihachiman, Ichikawa City, Chiba Keisei Sankopo Ichikawa 904 ( 72) Inventor Okuno, 2-18-16 Katsura, Izumi-ku, Sendai City, Miyagi Prefecture
Claims (4)
ケースと、ケース内に収納される永久磁石と、ケースの
開口部を密封し磁性部と非磁性部を有するシール部材と
からなる永久磁石構造体と、磁性材料からなるキーパー
とから構成される義歯安定用磁性アタッチメントであっ
て、ケースが、重量割合で、Ｃｒ：１５．５〜１８．５
％、残部がＦｅの組成を有する磁性材料であり、キーパ
ーが、重量割合で、Ｃｒ：２８．０〜３２．０％、残部
がＦｅの組成を有する磁性材料であることを特徴とする
義歯安定用磁性アタッチメント。1. A permanent magnet including a case made of a magnetic material having an opening on one side, a permanent magnet housed in the case, and a seal member for sealing the opening of the case and having a magnetic portion and a non-magnetic portion. A magnetic attachment for stabilizing a denture, comprising a structure and a keeper made of a magnetic material, wherein the case is Cr: 15.5 to 18.5 in weight ratio.
%, The balance is a magnetic material having a composition of Fe, and the keeper is a magnetic material having a weight ratio of Cr: 28.0 to 32.0% and a balance of Fe, characterized by stable dentures. Magnetic attachment for.
ル縁部材と、重量割合でＣｒ：１５．５〜１８．５％、
残部がＦｅの組成を有する磁性材料からなるシール中央
部材とにより構成される請求項１に記載の義歯安定用磁
性アタッチメント。2. The seal member comprises a seal edge member made of a non-magnetic material and Cr: 15.5 to 18.5% by weight.
The magnetic attachment for stabilizing a denture according to claim 1, wherein the rest is composed of a seal central member made of a magnetic material having a composition of Fe.
が、重量割合で、Ｃｒ：１５．５〜１８．５％、Ｍｏ：
０．０５〜１．５％、残部がＦｅの組成を有する磁性材
料である請求項１または２に記載の義歯安定用磁性アタ
ッチメント。3. The case and / or the seal central member, by weight ratio, Cr: 15.5 to 18.5%, Mo:
The magnetic attachment for stabilizing a denture according to claim 1 or 2, which is a magnetic material having a composition of 0.05 to 1.5% and the balance being Fe.
０〜３２．０％、Ｍｏ：１．５〜２．５％、残部がＦｅ
の組成を有する磁性材料である請求項１ないし３のいづ
れかに記載の義歯安定用磁性アタッチメント。4. The keeper comprises Cr: 28.
0-32.0%, Mo: 1.5-2.5%, balance Fe
The magnetic attachment for stabilizing a denture according to any one of claims 1 to 3, which is a magnetic material having the composition of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28156195A JPH09122151A (en) | 1995-10-30 | 1995-10-30 | Magnetic attachment for stabilizing denture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28156195A JPH09122151A (en) | 1995-10-30 | 1995-10-30 | Magnetic attachment for stabilizing denture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09122151A true JPH09122151A (en) | 1997-05-13 |
Family
ID=17640908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28156195A Pending JPH09122151A (en) | 1995-10-30 | 1995-10-30 | Magnetic attachment for stabilizing denture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09122151A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001252290A (en) * | 2000-03-10 | 2001-09-18 | Aichi Steel Works Ltd | Keeper for denture attachment, and method and tool of manufacturing the same |
| JP2006081700A (en) * | 2004-09-16 | 2006-03-30 | Neomax Co Ltd | Magnetic attachment |
| JP2012523873A (en) * | 2009-04-17 | 2012-10-11 | スーパーチャージド プロダクション エス．アール．エル． | Dental implant assembly including temporary magnet screws |
-
1995
- 1995-10-30 JP JP28156195A patent/JPH09122151A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001252290A (en) * | 2000-03-10 | 2001-09-18 | Aichi Steel Works Ltd | Keeper for denture attachment, and method and tool of manufacturing the same |
| JP2006081700A (en) * | 2004-09-16 | 2006-03-30 | Neomax Co Ltd | Magnetic attachment |
| JP2012523873A (en) * | 2009-04-17 | 2012-10-11 | スーパーチャージド プロダクション エス．アール．エル． | Dental implant assembly including temporary magnet screws |
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