JPH10151145A - Permanent magnet assembly for stabilizing denture - Google Patents
Permanent magnet assembly for stabilizing dentureInfo
- Publication number
- JPH10151145A JPH10151145A JP31085996A JP31085996A JPH10151145A JP H10151145 A JPH10151145 A JP H10151145A JP 31085996 A JP31085996 A JP 31085996A JP 31085996 A JP31085996 A JP 31085996A JP H10151145 A JPH10151145 A JP H10151145A
- Authority
- JP
- Japan
- Prior art keywords
- permanent magnet
- case
- magnetic
- magnet assembly
- denture
- 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 4
- 230000004907 flux Effects 0.000 claims abstract description 23
- 238000005260 corrosion Methods 0.000 claims abstract description 10
- 230000007797 corrosion Effects 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims description 29
- 239000000696 magnetic material Substances 0.000 claims description 18
- 230000005415 magnetization Effects 0.000 claims description 7
- 230000006641 stabilisation Effects 0.000 claims 2
- 238000011105 stabilization Methods 0.000 claims 2
- 239000000126 substance Substances 0.000 abstract 3
- 229910001220 stainless steel Inorganic materials 0.000 description 6
- 239000010935 stainless steel Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 239000007943 implant Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229910001004 magnetic alloy Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 210000000214 mouth Anatomy 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 150000002910 rare earth metals Chemical class 0.000 description 2
- 101150065537 SUS4 gene Proteins 0.000 description 1
- 210000001185 bone marrow Anatomy 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Landscapes
- Dental Prosthetics (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、永久磁石による磁
気吸引力を利用して義歯を保持する補綴方法に用いるた
めの永久磁石組立体の構成に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a permanent magnet assembly for use in a prosthetic method for holding a denture utilizing magnetic attraction by a permanent magnet.
【０００２】[0002]
【従来の技術】義歯を口腔内に固定するに際して、永久
磁石と軟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
「Ｔ．Ｒ．Ｊａｃｋｓｏｎ：オッセオインテグレード・
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、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
種々記載されている。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などが必要条件とさ
れており、例えば図４に示すような構成の永久磁石組立
体が使用されてきた。 図４は、永久磁石１と、磁性材料からなるケース２と、
ケース２の開口部を密封するためのシールプレート１３
とからなる円筒形状の永久磁石組立体１０の断面を示す
図である。シールプレート１３は、非磁性材料からなる
シールリング１４と磁性材料からなるシール円板１５と
をシーム溶接によって一体に形成したものであり、シー
ルプレート１３とケース２とはシーム溶接によって一体
に固着される。シーム溶接部を１６として図中に示す。
図2は永久磁石組立体を使用した義歯固定手段の例を示
す要部縦断面図である。図2において、７は根面部材で
あり、その上端面に軟磁性合金からなるキーパー２２を
備え、縦断面形状を逆Ｔ字型に形成し歯根９内に埋設す
る。８は義歯床であり、この義歯床８内に前記図４に示
すような永久磁石組立体１０をそのシールプレート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、永久磁石組立体１０と根面部材７のキーパー２
２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。2. Description of the Related Art In fixing a denture in an oral cavity, various attempts have been made to utilize a magnetic attraction force acting between a permanent magnet and a soft magnetic alloy, for example, see "TR Jackson". : Osseointegrade
Application of rare earth magnet maintenance devices to implants, oral maxillofacial implants,
Vol. 1 (1987), No. 1; 2, pages 77 to 89 ". In order to make this type of denture practical, a permanent magnet must be completely sealed in a case made of a material proven to be harmless to the human body, and the leakage magnetic flux to the outside must be small. Are required, and for example, a permanent magnet assembly having a configuration as shown in FIG. 4 has been used. FIG. 4 shows a permanent magnet 1, a case 2 made of a magnetic material,
Seal plate 13 for sealing the opening of case 2
FIG. 4 is a diagram showing a cross section of a cylindrical permanent magnet assembly 10 composed of: The seal plate 13 is formed by integrally forming a seal ring 14 made of a non-magnetic material and a seal disk 15 made of a magnetic material by seam welding. The seal plate 13 and the case 2 are integrally fixed by seam welding. You. The seam weld is shown as 16 in the figure.
FIG. 2 is a vertical sectional view of a main part showing an example of a denture fixing means using a permanent magnet assembly. In FIG. 2, a root surface member 7 has a keeper 22 made of a soft magnetic alloy on its upper end surface, and has a vertical T-shaped vertical cross section and is embedded in the tooth root 9. Reference numeral 8 denotes a denture base, in which a permanent magnet assembly 10 as shown in FIG.
It is installed so that the side faces the root surface member 7. With the above configuration, the keeper 2 of the permanent magnet assembly 10 and the root surface member 7 is formed.
The denture base 8 is pressed against the root 9 by the magnetic attraction, and the denture 11 can be stabilized in the oral cavity.
【０００３】[0003]
【発明が解決しようとする課題】図3に示す臼歯部のよ
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１２が義歯として配置され、義歯床８内に永久
磁石組立体１０を埋設する場合、永久磁石組立体を配置
できる空隙が限られている。図3に示す臼歯部の場合、
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5.5
ｍｍである。このような限定された空隙に現在は吸引力
を４００ｇ以上に保ちながら、できるだけ寸法の小さい
磁石組立体として直径約4.0ｍｍ、厚み2.1ｍｍ程度のも
のが使用されている。この永久磁石組立体の大きさで
は、義歯床からはみ出す症例もあり、永久磁石組立体を
用いた補綴が困難な場合があり、より小型の永久磁石組
立体が求められているが、永久磁石組立体を小型化する
と磁気的吸引力が低下するという問題があり、種々の大
きさの永久磁石組立体に対応するためには高い磁気的吸
引力を有する永久磁石組立体が求められている。したが
って、本発明は、高い磁気的吸引力を有する永久磁石組
立体を提供することを目的とする。As shown in FIG. 3, a denture base 8 is placed in a space corresponding to a crown portion which is a natural tooth.
When the artificial teeth 12 are arranged as dentures and the permanent magnet assembly 10 is buried in the denture base 8, the space in which the permanent magnet assembly can be arranged is limited. In the case of the molar part 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 is about 5.5 which is the minimum distance d between the tooth diameters.
mm. At present, a magnet assembly having a diameter of about 4.0 mm and a thickness of about 2.1 mm is used as small as possible while maintaining an attractive force of 400 g or more in such a limited space. In some cases, the size of the permanent magnet assembly protrudes from the denture base, making it difficult to perform prosthesis using the permanent magnet assembly. There is a problem that the magnetic attraction force is reduced when the three-dimensional body is reduced in size, and a permanent magnet assembly having a high magnetic attraction force is required to cope with permanent magnet assemblies of various sizes. Accordingly, an object of the present invention is to provide a permanent magnet assembly having a high magnetic attraction.
【０００４】[0004]
【問題点を解決する手段】上記目的を達成するため、本
発明者等は、永久磁石組立体の構造の改善を種々検討を
行った結果、ケースとシールプレートとから形成される
密封空間内に、ケースよりも高い飽和磁束密度を有する
内部ヨーク材を、永久磁石の着磁方向に対して垂直な方
向に配置することにより、磁気的吸引力が向上すること
を見出した。したがって、本発明は、永久磁石と、永久
磁石を収納する凹部を有する耐食性磁性材料からなるケ
ースと、ケース凹部の開口部から前記永久磁石が露出し
ないように覆うための耐食性磁性材料および耐食性非磁
性材料とからなるシールプレートとを有する義歯安定用
永久磁石組立体であって、ケースとシールプレートとか
ら形成される密封空間内に、ケースよりも高い飽和磁束
密度を有する磁性材料からなる内部ヨーク材を、永久磁
石の着磁方向に対して垂直な方向に配置した義歯安定用
永久磁石組立体である。Means for Solving the Problems In order to achieve the above object, the present inventors have made various studies on the improvement of the structure of the permanent magnet assembly, and as a result, have found that the permanent magnet assembly has a sealed space formed by a case and a seal plate. By arranging the inner yoke material having a higher saturation magnetic flux density than the case in a direction perpendicular to the magnetization direction of the permanent magnet, it has been found that the magnetic attraction force is improved. Therefore, the present invention provides a case made of a corrosion-resistant magnetic material having a permanent magnet and a recess for accommodating the permanent magnet, a corrosion-resistant magnetic material for covering the opening of the case recess so that the permanent magnet is not exposed, and a corrosion-resistant non-magnetic material. A permanent magnet assembly for stabilizing a denture having a seal plate made of a material, wherein an inner yoke material made of a magnetic material having a higher saturation magnetic flux density than the case is provided in a sealed space formed by the case and the seal plate. Are arranged in a direction perpendicular to the magnetization direction of the permanent magnet.
【０００５】本発明では、ケースよりも高い飽和磁束密
度を有する磁性材料からなる内部ヨーク材を永久磁石の
着磁方向に対して垂直方向に配置することにより磁気的
吸引力が向上する。この理由は、シールプレートと永久
磁石との間に内部ヨーク材を配置した場合、シールプレ
ートの非磁性部と永久磁石との間に磁束の通り易い部分
が増え、非磁性部上方の永久磁石の磁束が有効に働き、
永久磁石組立体全体の磁気的吸引力に作用する磁束が増
えるためである。また、ケース底部と永久磁石との間に
内部ヨーク材を配置した場合、ケース底部の磁性材料の
厚みが増すことによりケース底部の磁束の飽和が減り、
ケース底部を通過する磁束量が増え、永久磁石組立体全
体の磁気的吸引力に作用する磁束が増えるためである。
したがって、内部ヨーク材は、シールプレートと永久磁
石との間、ケース底部と永久磁石との間のいづれか一方
に配置することによっても磁気的吸引力が向上するが、
両方に配置することによりさらに磁気的吸引力が向上し
好ましい。In the present invention, the magnetic attraction is improved by arranging an internal yoke material made of a magnetic material having a higher saturation magnetic flux density than the case in a direction perpendicular to the magnetization direction of the permanent magnet. The reason is that, when the internal yoke material is arranged between the seal plate and the permanent magnet, the portion where the magnetic flux easily passes between the non-magnetic portion and the permanent magnet of the seal plate increases, and the permanent magnet above the non-magnetic portion becomes harder. The magnetic flux works effectively,
This is because the magnetic flux acting on the magnetic attractive force of the entire permanent magnet assembly increases. When the inner yoke material is arranged between the case bottom and the permanent magnet, the saturation of the magnetic flux at the case bottom is reduced by increasing the thickness of the magnetic material at the case bottom,
This is because the amount of magnetic flux passing through the bottom of the case increases, and the magnetic flux acting on the magnetic attraction of the entire permanent magnet assembly increases.
Therefore, although the internal yoke material is arranged between the seal plate and the permanent magnet, or between the bottom of the case and the permanent magnet, the magnetic attractive force is improved,
It is preferable to arrange both of them, because the magnetic attraction force is further improved.
【０００６】内部ヨーク材の飽和磁束密度がケースより
も低いと、磁気的吸引力を向上させる効果は少ないの
で、ケースより飽和磁束密度が高い磁性材料を内部ヨー
ク材として用いる。ケースは、耐食性と飽和磁束密度と
のバランスを考慮し、飽和磁束密度が１．２〜１．４Ｔ
程度のＳＵＳ４４７Ｊ１、ＳＵＳＸＭ２７等のステンレ
ス鋼を用いることが望ましく、その場合、内部ヨーク材
の飽和磁束密度は、１．４Ｔ以上が好ましく、１．６Ｔ
以上とすることがより好ましい。このような飽和磁束密
度が１．４Ｔ以上の磁性材料としては、例えばＳＵＳ４
３０等のステンレス鋼があり、１．６Ｔ以上の磁性材料
としては、鉄板、パーメンダー等がある。本発明におい
て、内部ヨーク材は、永久磁石とともに耐食性に優れる
ケースおよびシールプレートで構成される空間内に密封
されるので、本発明にかかる永久磁石構造体は安全性に
優れる。When the saturation magnetic flux density of the internal yoke material is lower than that of the case, the effect of improving the magnetic attraction force is small. Therefore, a magnetic material having a higher saturation magnetic flux density than the case is used as the internal yoke material. The case has a saturation magnetic flux density of 1.2 to 1.4 T in consideration of the balance between corrosion resistance and saturation magnetic flux density.
It is desirable to use stainless steel such as SUS447J1 and SUSXM27, and in this case, the saturation magnetic flux density of the internal yoke material is preferably 1.4T or more, and 1.6T or more.
It is more preferable to make the above. As such a magnetic material having a saturation magnetic flux density of 1.4 T or more, for example, SUS4
There are stainless steels such as 30 and the like, and magnetic materials of 1.6T or more include iron plates, permenders and the like. In the present invention, the internal yoke material is sealed in the space formed by the case and the seal plate having excellent corrosion resistance together with the permanent magnet, so that the permanent magnet structure according to the present invention is excellent in safety.
【０００７】[0007]
【発明の実施の態様】小型磁石組立体として、直径が4.
0ｍｍ、厚みが1.5ｍｍの円筒形状の永久磁石組立体を種
々試作した。磁気的吸引力は６００ｇ〜７００ｇをねら
った。これは、臼歯用として十分な吸引力であり、かつ
骨髄不良歯が抜けないための吸引力である。図1に作製
した外径Ｄ1＝4.0ｍｍ、厚みＨ1＝1.5ｍｍの永久磁石組
立体の縦断面図を示す。飽和磁束密度Ｂｓ＝１．２８Ｔ
のＳＵＳ４４７Ｊ−１ステンレス鋼からなるケース２
と、非磁性材料であるＳＵＳ３１６Ｌからなる幅Ｇ＝0.
25ｍｍのシールリング１４およびケースと同材料のシー
ル円板１５とからなるシールプレート１３とで形成され
る密封空間Ａ内（図１中の斜線部）に図５に示す構成の
永久磁石１と内部ヨーク材３を配置した。永久磁石１は
残留磁束密度Ｂｒ≧１２５０ｍＴ、保磁力≧１０００ｋ
Ａ／ｍの磁気特性を有する希土類磁石を直径２．９ｍ
ｍ、厚み０．５ｍｍに加工した。また、シール円板とシ
ールリングとの突き合わせ部、シールプレートとケース
との突き合わせ部はシーム溶接により密封した。なお、
磁気的吸引力は、ケースと同材質の直径4.0ｍｍ、厚み
0.8ｍｍのキーパーを永久磁石組立体に吸着させて、こ
れを垂直に引き離す力と定義して測定した。BEST MODE FOR CARRYING OUT THE INVENTION A small magnet assembly having a diameter of 4.
Various prototypes of cylindrical permanent magnet assemblies having a thickness of 0 mm and a thickness of 1.5 mm were produced. The magnetic attraction force aimed at 600 g to 700 g. This is a suction force sufficient for molars and a suction force for preventing bone marrow defective teeth from coming off. FIG. 1 shows a longitudinal sectional view of the prepared permanent magnet assembly having an outer diameter D 1 = 4.0 mm and a thickness H 1 = 1.5 mm. Saturation magnetic flux density Bs = 1.28T
Case 2 made of SUS447J-1 stainless steel
And a width G = 0.0 made of SUS316L which is a non-magnetic material.
In a sealed space A (hatched portion in FIG. 1) formed by a seal plate 13 composed of a seal ring 14 of 25 mm and a case and a seal disk 15 of the same material, the permanent magnet 1 having the configuration shown in FIG. The yoke material 3 was arranged. The permanent magnet 1 has a residual magnetic flux density Br ≧ 1250 mT and a coercive force ≧ 1000 k
A rare earth magnet having magnetic characteristics of A / m is 2.9 m in diameter.
m, and processed to a thickness of 0.5 mm. The butt portion between the seal disk and the seal ring and the butt portion between the seal plate and the case were sealed by seam welding. In addition,
Magnetic attraction force is 4.0mm in diameter and thickness of the same material as the case
A 0.8 mm keeper was attracted to a permanent magnet assembly, and this was defined as the force to pull the keeper vertically apart.
【０００８】（実施例１）図５(ａ)〜(ｃ)に図１の密封
空間Ａに配置した永久磁石と内部ヨーク材の構成を示
す。図５(ａ)は、永久磁石の着磁方向と垂直な方向に内
部ヨーク材を配置した。図５(ｂ)は、永久磁石の着磁方
向と平行な方向にリング形状の内部ヨーク材を配置し
た。図５(ｃ)は、従来例であり、内部ヨーク材がない永
久磁石のみの配置である。図５(ａ)、(ｂ)の内部ヨーク
材としてＢｓ＝１．７６Ｔのステンレス鋼を用いた。図
５(ａ)〜図５(ｃ)のそれぞれの磁気的吸引力の測定結果
を表１に示す。表１より、永久磁石の着磁方向に対し垂
直な方向に内部ヨーク材を配置した図５(ａ)は永久磁石
組立体の磁気的吸引力が向上することがわかる。(Embodiment 1) FIGS. 5 (a) to 5 (c) show the structure of a permanent magnet and an internal yoke material arranged in a sealed space A of FIG. In FIG. 5A, the internal yoke material is arranged in a direction perpendicular to the magnetization direction of the permanent magnet. In FIG. 5B, a ring-shaped internal yoke material is arranged in a direction parallel to the magnetization direction of the permanent magnet. FIG. 5C shows a conventional example in which only permanent magnets without an internal yoke material are arranged. Stainless steel of Bs = 1.76T was used as the inner yoke material in FIGS. 5 (a) and 5 (b). Table 1 shows the measurement results of the magnetic attraction force of each of FIGS. 5 (a) to 5 (c). Table 1 shows that the magnetic attraction of the permanent magnet assembly is improved in FIG. 5A in which the internal yoke material is arranged in a direction perpendicular to the magnetization direction of the permanent magnet.
【０００９】[0009]
【表１】 [Table 1]
【００１０】（実施例２）実施例１の図５(ａ)と内部ヨ
ーク材の磁性材料以外、同様の構成を有する永久磁石組
立体を作成し、磁気的吸引力を測定した。内部ヨーク材
として、表２に示す飽和磁束密度Ｂｒを有するパーメン
ダー、鉄板、ＳＵＳ４３０ステンレス鋼、ＳＵＳ４４７
Ｊ１ステンレス鋼を用いた。永久磁石構造体の磁気的吸
引力を表２に示す。なお、表2に従来例として、内部ヨ
ーク材を挿入せず、永久磁石のみを配置した永久磁石構
造体の磁気的吸引力も合わせて示す（Ｎｏ．５）。表２
より、本発明例であるＮｏ．１〜３のようにケースの飽
和磁束密度より高い内部ヨーク材を挿入した場合、永久
磁石構造体の磁気的吸引力が増加することがわかる。(Example 2) A permanent magnet assembly having the same structure as that of Example 1 except for the magnetic material of the inner yoke material shown in FIG. 5A was prepared, and the magnetic attraction force was measured. As an internal yoke material, a permender having a saturation magnetic flux density Br shown in Table 2, an iron plate, SUS430 stainless steel, SUS447
J1 stainless steel was used. Table 2 shows the magnetic attractive force of the permanent magnet structure. Table 2 also shows, as a conventional example, the magnetic attractive force of a permanent magnet structure in which only a permanent magnet is arranged without inserting an internal yoke material (No. 5). Table 2
Thus, No. 1 of the present invention example. It can be seen that when an internal yoke material higher than the saturation magnetic flux density of the case as shown in 1 to 3 is inserted, the magnetic attraction of the permanent magnet structure increases.
【００１１】[0011]
【表２】 [Table 2]
【発明の効果】本発明により、永久磁石構造体の磁気的
吸引力を向上させることができるため、永久磁石構造体
を小型化することも可能となる。According to the present invention, since the magnetic attraction of the permanent magnet structure can be improved, the size of the permanent magnet structure can be reduced.
【図面の簡単な説明】[Brief description of the drawings]
【図１】 本発明に係る永久磁石構造体の縦断面図であ
る。FIG. 1 is a longitudinal sectional view of a permanent magnet structure according to the present invention.
【図２】 永久磁石構造体を義歯固定に用いいる方法の
一例を示す図である。FIG. 2 is a diagram showing an example of a method using a permanent magnet structure 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
な空隙を示す図である。FIG. 3 is a diagram showing a gap required when a permanent magnet structure is embedded in a molar part.
【図４】 従来の永久磁石組立体の断面図である。FIG. 4 is a sectional view of a conventional permanent magnet assembly.
【図５】 永久磁石および内部ヨーク材の配置を示す断
面図である。FIG. 5 is a sectional view showing an arrangement of a permanent magnet and an internal yoke material.
１ 永久磁石、２ ケース、３ 内部ヨーク材、７ 根
面部材、８ 義歯床、９ 歯根、１０ 永久磁石組立
体、１１ 義歯、１２ 人工歯、１３ シールプレー
ト、１４ シールリング、１５ シール円板、１６ シ
ーム溶接部、２２ キーパーReference Signs List 1 permanent magnet, 2 case, 3 internal yoke material, 7 root surface member, 8 denture base, 9 tooth root, 10 permanent magnet assembly, 11 denture, 12 artificial tooth, 13 seal plate, 14 seal ring, 15 seal disk, 16 seam welds, 22 keeper
───────────────────────────────────────────────────── フロントページの続き (72)発明者 鈴木 弘也 埼玉県熊谷市三ケ尻5200番地日立金属株式 会社磁性材料研究所内 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Hiroya Suzuki 5200 Mikajiri, Kumagaya-shi, Saitama Pref.
Claims (2)
有する耐食性磁性材料からなるケースと、ケース凹部の
開口部から前記永久磁石が露出しないように覆うための
耐食性磁性材料および耐食性非磁性材料とからなるシー
ルプレートとを有する義歯安定用永久磁石組立体であっ
て、ケースとシールプレートとから形成される密封空間
内に、ケースよりも高い飽和磁束密度を有する磁性材料
からなる内部ヨーク材を、永久磁石の着磁方向に対して
垂直な方向に配置したことを特徴とする義歯安定用永久
磁石組立体。1. A case made of a corrosion-resistant magnetic material having a permanent magnet, a recess for accommodating the permanent magnet, a corrosion-resistant magnetic material and a corrosion-resistant non-magnetic material for covering the permanent magnet so as not to be exposed from an opening of the case recess. A permanent magnet assembly for denture stabilization having a seal plate comprising: a sealed space formed by a case and a seal plate, wherein an internal yoke material made of a magnetic material having a higher saturation magnetic flux density than the case is provided. A permanent magnet assembly for stabilizing a denture, wherein the permanent magnet assembly is arranged in a direction perpendicular to the magnetization direction of the permanent magnet.
以上である請求項１に記載の義歯安定用永久磁石組立
体。2. The saturation magnetic flux density of the inner yoke material is 1.4T.
The permanent magnet assembly for denture stabilization according to claim 1, which is as described above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31085996A JPH10151145A (en) | 1996-11-21 | 1996-11-21 | Permanent magnet assembly for stabilizing denture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31085996A JPH10151145A (en) | 1996-11-21 | 1996-11-21 | Permanent magnet assembly for stabilizing denture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10151145A true JPH10151145A (en) | 1998-06-09 |
Family
ID=18010254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31085996A Pending JPH10151145A (en) | 1996-11-21 | 1996-11-21 | Permanent magnet assembly for stabilizing denture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10151145A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102571230B1 (en) * | 2022-10-07 | 2023-08-25 | 주식회사 코리아오션텍 | Cover for permanemt magnet and manufacturing method thereof |
-
1996
- 1996-11-21 JP JP31085996A patent/JPH10151145A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102571230B1 (en) * | 2022-10-07 | 2023-08-25 | 주식회사 코리아오션텍 | Cover for permanemt magnet and manufacturing method thereof |
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