JPH0471551A - Denture attachment - Google Patents
Denture attachmentInfo
- Publication number
- JPH0471551A JPH0471551A JP18213990A JP18213990A JPH0471551A JP H0471551 A JPH0471551 A JP H0471551A JP 18213990 A JP18213990 A JP 18213990A JP 18213990 A JP18213990 A JP 18213990A JP H0471551 A JPH0471551 A JP H0471551A
- Authority
- JP
- Japan
- Prior art keywords
- spacer
- plate
- root
- magnetic
- holding plate
- 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.)
- Granted
Links
- 125000006850 spacer group Chemical group 0.000 claims abstract description 44
- 229910001004 magnetic alloy Inorganic materials 0.000 claims abstract description 24
- 230000007797 corrosion Effects 0.000 claims description 26
- 238000005260 corrosion Methods 0.000 claims description 26
- 238000003466 welding Methods 0.000 claims description 24
- 239000000696 magnetic material Substances 0.000 claims description 20
- 229910052751 metal Inorganic materials 0.000 abstract description 11
- 239000002184 metal Substances 0.000 abstract description 11
- 238000005266 casting Methods 0.000 abstract description 10
- 239000000463 material Substances 0.000 abstract description 7
- 229910045601 alloy Inorganic materials 0.000 abstract description 5
- 239000000956 alloy Substances 0.000 abstract description 5
- 239000000126 substance Substances 0.000 abstract 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 7
- 150000002910 rare earth metals Chemical class 0.000 description 7
- 238000005219 brazing Methods 0.000 description 5
- 230000004907 flux Effects 0.000 description 5
- 210000003296 saliva Anatomy 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000002845 discoloration Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 210000000214 mouth Anatomy 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000120 Artificial Saliva Substances 0.000 description 1
- 229910052772 Samarium Inorganic materials 0.000 description 1
- 206010040844 Skin exfoliation Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 239000000805 composite resin Substances 0.000 description 1
- 239000003479 dental cement Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 230000006355 external stress Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- CVRPVRHBAOPDIG-UHFFFAOYSA-N methyl 2-methylprop-2-enoate;2-(2-methylprop-2-enoyloxy)ethyl 1,3-dioxo-2-benzofuran-5-carboxylate Chemical compound COC(=O)C(C)=C.CC(=C)C(=O)OCCOC(=O)C1=CC=C2C(=O)OC(=O)C2=C1 CVRPVRHBAOPDIG-UHFFFAOYSA-N 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 210000003456 pulmonary alveoli Anatomy 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
Landscapes
- Dental Prosthetics (AREA)
Abstract
Description
【発明の詳細な説明】
[産業上の利用分野]
本発明は磁気吸引力を利用した義歯アタッチメントに係
り、詳しくは歯根部に埋設される根面板上面に接着され
た軟磁性合金からなる保持板と義歯床内に埋設される磁
性体とからなり、吸着力と耐食性に優れかつ鋳接の際に
根面板と保持板のずれの少ない義歯アタッチメントに関
する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a denture attachment that utilizes magnetic attraction, and more specifically, a retainer plate made of a soft magnetic alloy that is bonded to the upper surface of a root plate embedded in a tooth root. and a magnetic material embedded in the denture base, and relates to a denture attachment that has excellent adsorption force and corrosion resistance, and has little misalignment between the root plate and the retaining plate during casting.
[従来の技術]
従来、磁気吸引力を利用した義歯としては、例えば第9
図および第10図に示されるものが提案されている(特
開昭62−231653号公報)。[Prior art] Conventionally, as a denture using magnetic attraction force, for example,
What is shown in FIGS. 62-231653 has been proposed.
この義歯は、歯槽91内の根92に埋設した磁性材料か
らなる根面板93に対向するように、義歯部95を設け
たものである。しかして、この義歯部95は、下方にプ
ラスチック等からなる義歯床94を有し、該義歯床9・
1内には前記根面板93に対向する位置に磁性体8を有
している。This denture is provided with a denture portion 95 facing a root plate 93 made of a magnetic material and embedded in a root 92 in an alveolus 91. Therefore, this denture part 95 has a denture base 94 made of plastic or the like below, and the denture base 9.
1 has a magnetic body 8 at a position facing the base plate 93.
該磁性体8は第10図に示すごとく、上方部に突起83
を有するステンレス鋼製ケース81の中に磁石82を配
置したものである。しかして、上記磁石82としては、
強力な磁力を有する8輪(サマリウム)−〇〇(コバル
ト)系の希土類磁石が用いられている。As shown in FIG. 10, the magnetic body 8 has a protrusion 83 on the upper part.
A magnet 82 is placed inside a stainless steel case 81 having a diameter. However, as the magnet 82,
An 8-ring (samarium)-〇〇 (cobalt) rare earth magnet with strong magnetic force is used.
[発明が解決しようとする課題]
しかしながら、従来の磁石は、いずれもその磁石吸引力
が200g〜300g程度と低い、この吸引力は、旧来
より多用されている生歯間にバネで機械的に保持する場
合の500g以上の力に対して低い。[Problem to be solved by the invention] However, all conventional magnets have a low magnetic attraction force of about 200g to 300g. Low force compared to 500g or more when holding.
また、磁石は口腔内で腐食し易いため、希土類磁石が口
腔内に露出している場合には、磁石が錆びて急速な吸引
力の減衰と共に安全上も問題があった。また、防錆のた
めに前記公報のごとく、ステンレス鋼算の非磁性合金の
ケースで磁石体全体を被覆した場合には、磁石と根面板
との間に非磁性合金が介在するため、吸引力が低下して
しまう。In addition, since magnets are easily corroded in the oral cavity, if the rare earth magnet is exposed in the oral cavity, the magnet will rust and the attraction force will rapidly decrease, which also poses a safety problem. In addition, when the entire magnet body is covered with a case made of a non-magnetic alloy equivalent to stainless steel for rust prevention, as in the above publication, the non-magnetic alloy is interposed between the magnet and the base plate, so the attraction force will decrease.
かかる問題点に鑑み、発明者等は先に、根面板に対して
垂直な一対のヨークの間に希土類磁石の磁石を配置し、
かつ該磁石の下面に非磁性合金のスペーサを配置し、ヨ
ークとスペーサの根面板側を除いてキャップで被冠した
磁性体とからなる義歯アタッチメントを提案した。In view of this problem, the inventors first placed a rare earth magnet between a pair of yokes perpendicular to the root plate.
We also proposed a denture attachment consisting of a spacer made of a non-magnetic alloy placed on the lower surface of the magnet, and a magnetic material covered with a cap except for the yoke and the root plate side of the spacer.
発明者等の前記提案に係る義歯アタッチメントは、一対
のヨークには軟磁性合金を用いているので、2つのヨー
クと根面板の間に磁気回路が形成され、大きな吸引力を
発生することができる。また、スペーサおよびキャップ
はヨークと根面板の間に介在せず、かつ非磁性合金によ
り構成しているので、強い吸引力を確保できる。また、
根面板の上面に13Cr−2Mo、17Cr−2Mo等
の軟磁性合金からなる保持板を接着すれば、さらに吸引
力を向上できる。Since the denture attachment according to the above proposal by the inventors uses a soft magnetic alloy for the pair of yokes, a magnetic circuit is formed between the two yokes and the root plate, and a large attractive force can be generated. . Further, since the spacer and the cap are not interposed between the yoke and the root plate and are made of a non-magnetic alloy, a strong attraction force can be ensured. Also,
If a holding plate made of a soft magnetic alloy such as 13Cr-2Mo or 17Cr-2Mo is adhered to the upper surface of the base plate, the suction force can be further improved.
ところで、根面板に保持板を接着するには、通常鋳接に
よっている。すなわち、鋳型内の所定の位置に保持板を
固定して根面板を鋳込んで保持板を鋳接している。然る
に、保持板は鋳型内で移動し易く、正確な位置にうまく
鋳接できないという問題点がある。このように鋳接の際
に保持板がずれると、lI歯アタッチメントの吸引力が
低下してしまう。By the way, the retaining plate is usually bonded to the base plate by casting. That is, the retaining plate is fixed at a predetermined position within the mold, the base plate is cast, and the retaining plate is welded. However, there is a problem in that the retaining plate tends to move within the mold, making it difficult to weld it in an accurate position. If the holding plate shifts during welding in this way, the suction force of the II tooth attachment will decrease.
また、従来においては、根面板側におけるキャップとヨ
ークおよびスペーサとの境界面およびヨークとスペーサ
の境界面はろう付けによるか接着剤また樹脂により接着
するものであった。Furthermore, in the past, the interface between the cap, yoke, and spacer on the root plate side, and the interface between the yoke and spacer were bonded by brazing, adhesive, or resin.
境界面をろう付けにより接着する場合は、電食によって
ヨークが腐食するおそれがあり、各部材との密着性が不
安定でろう材が剥離することがある。嘘な、ろう流れの
不良により隙間が残りシールが不完全になることがあり
、そのなめその隙間から腐食が進行する。さらに、ろう
材は強度が弱いなめ、強い外部応力が作用すると接合部
が剥離することがある。When the interface is bonded by brazing, the yoke may be corroded by electrolytic corrosion, and the adhesion with each member may be unstable and the brazing material may peel off. Unfortunately, poor flow of wax can leave gaps and make the seal incomplete, and corrosion progresses through these gaps. Furthermore, since the strength of the brazing filler metal is low, the joint may peel off when strong external stress is applied.
接着剤、例えばコンポジット系レジン(通称:バナビア
)、スーパーボンドまた樹脂を用いて境界面を接合する
場合は、接合部そのものが耐久性に劣り、長期に亙る唾
液の侵入を完全tこ防ぐことができない。When bonding interfaces using adhesives such as composite resin (commonly known as Vanavia), Superbond, or resin, the bond itself has poor durability and cannot completely prevent saliva from entering over a long period of time. Can not.
一方、キャップを無しにしてアタッチメント全体を金、
銀またはニッケルめっきをするという方策があるが、こ
の方策ではめっきが剥離しやすく、長期間に亙って防食
作用を維持することが困難である。On the other hand, without the cap, the entire attachment is made of gold,
There is a method of applying silver or nickel plating, but with this method, the plating tends to peel off and it is difficult to maintain the anticorrosion effect over a long period of time.
本発明は、根面板に取り付けた保持板と根面板に対して
垂直な一対のヨークの間に希土類磁石の磁石体を配置し
、かつ該磁石体の下面に非磁性合金のスペーサを配置し
、ヨークとスペーサの根面板側を除いてキャップで被冠
した磁性体とからなる義歯アタッチメントにおける保持
板のずれによる吸引力の低下およびキャップとヨークお
よびスペーサとの接合部、ヨークとスペーサの接合部に
おける前記のごとき問題点に鑑みてなされたものであっ
て、小型で高吸引力を有し唾液による腐食から完全にシ
ールするとともに、強度および耐久力に優れ、根面板と
保持板のずれがなく優れた吸引力を有する義歯アタッチ
メントを提供することを目的とする。The present invention arranges a rare earth magnet between a holding plate attached to the root plate and a pair of yokes perpendicular to the root plate, and arranges a non-magnetic alloy spacer on the lower surface of the magnet, In a denture attachment consisting of a yoke and a magnetic material covered with a cap except for the root plate side of the spacer, the suction force may be reduced due to the displacement of the retaining plate, and at the joints between the cap, yoke and spacer, and the joints between the yoke and spacer. This was developed in view of the problems mentioned above.It is small, has high suction power, completely seals against corrosion caused by saliva, has excellent strength and durability, and is excellent in that there is no misalignment between the root plate and the retaining plate. The purpose of the present invention is to provide a denture attachment that has a suction force.
[課題を解決するための手段]
発明者等は前記問題を解決するため、根面板にに保持板
を鋳接する際に、保持板を確実に鋳型に固定することに
ついて鋭意検討を重ね、保持板を固定する手段として鋳
接に際して取手を取り付けるということを着想し本発明
を完成した。[Means for Solving the Problems] In order to solve the above-mentioned problem, the inventors have conducted extensive studies on how to securely fix the retaining plate to the mold when casting the retaining plate to the base plate, and have developed a method for fixing the retaining plate to the mold. The present invention was conceived based on the idea of attaching a handle during casting as a means of fixing the handle.
また、キャップとヨークおよびスペーサとの接合部、ヨ
ークとスペーサの接合部における充分な防錆力を確保す
るためには、ろう付けによらずに溶接により接合すると
ともに、接合部の部材同志の充分な溶は込みが必要であ
るとの着想を得た。In addition, in order to ensure sufficient rust prevention at the joints between the cap, yoke, and spacer, and between the yoke and spacer, welding should be used instead of brazing. I came up with the idea that it was necessary to have a unique melting process.
本発明はかかる知見に基づいて接合部に溶接を適用する
ことによって本発明を完成した。The present invention was completed by applying welding to the joint based on this knowledge.
本発明の義歯アタッチメントは、その第1発明として、
歯根部に埋設した根面板の磁性体側に接着した軟磁性合
金からなる保持板と、前記根面板に対向するよう義歯床
内に埋設される磁性体とからなる義歯アタッチメントで
あって、
該磁性体は、根面板側に設けた耐食非磁性合金からなる
スペーサと、前記スペーサを挟持して前記根面板側に向
けて立設した耐食軟磁性合金からなる一対のヨークと、
前記スペーサの反根面側にS極とN極を前記両ヨークに
対向させて設けた磁石と、前記磁石と前記一対のヨーク
および前記スペーサの根面板側を除いて被冠したキャッ
プとよりなる磁性体である義歯アタッチメントにおいて
、前記根面板に前記保持板を鋳接するに際し、前記保持
板に取手を取り付けたことを要旨とする。The denture attachment of the present invention has, as its first invention,
A denture attachment consisting of a retaining plate made of a soft magnetic alloy bonded to the magnetic side of a root plate embedded in a tooth root, and a magnetic body embedded in a denture base to face the root plate, the magnetic body a spacer made of a corrosion-resistant non-magnetic alloy provided on the root plate side; a pair of yokes made of a corrosion-resistant soft magnetic alloy that sandwich the spacer and stand upright toward the root plate side;
The spacer includes a magnet having an S pole and an N pole facing the yokes on the side opposite to the root surface of the spacer, and a cap that covers the magnet, the pair of yokes, and the spacer except for the root surface plate side. In the denture attachment which is a magnetic material, the gist is that a handle is attached to the retainer plate when the retainer plate is cast-welded to the root plate.
また、第2発明は第1発明の耐食性と耐久性を改善する
ため、前記磁性体の前記キャップ、前記ヨークおよび前
記スペーサの根面板側の境界面を溶接によって接合した
ことを要旨とする。Moreover, in order to improve the corrosion resistance and durability of the first invention, a second invention is characterized in that the cap, the yoke, and the boundary surface of the spacer on the root plate side of the magnetic body are joined by welding.
磁性体に用いる磁石としては、最大エルネギ−積が20
MGOe(メガ・ガウス・エルステッド)以上である希
土類磁石を用いることが好ましい。As a magnet used for magnetic materials, the maximum energy product is 20
It is preferable to use a rare earth magnet of MGOe (Mega Gauss Oersted) or higher.
これにより、約500g以上の吸引力を有する義歯アタ
ッチメントとすることができる。かかる希土類磁石とし
ては、SmCo5.5sCO+yなどのS−〇〇系合金
、Nb−Fe−B系合金などがある。Thereby, the denture attachment can have a suction force of about 500 g or more. Such rare earth magnets include S-〇-based alloys such as SmCo5.5sCO+y, Nb-Fe-B-based alloys, and the like.
また、ヨークおよび保持板の軟磁性合金としては、飽和
磁束密度13000G以上、透磁率3000以上のもの
を用いることが好ましい。かかる特性を有するヨークお
よび保持板の軟磁性合金としては、純鉄、13Cr−2
Mo鋼、17Cr−2Mailなどがある。また、ヨー
クおよび保持板の軟磁性合金の飽和磁束密度が2000
0G以上の場合には、更に吸引力が増大する。かがる軟
磁性合金としては純鉄がある。なお、第5図および第6
図に飽和磁束密度および最大エルネギ−積と吸引力の関
係を示した。Further, as the soft magnetic alloy for the yoke and the holding plate, it is preferable to use one having a saturation magnetic flux density of 13,000 G or more and a magnetic permeability of 3,000 or more. Soft magnetic alloys for the yoke and retainer plate having such characteristics include pure iron, 13Cr-2
Examples include Mo steel and 17Cr-2Mail. In addition, the saturation magnetic flux density of the soft magnetic alloy of the yoke and retaining plate is 2000
In the case of 0G or more, the suction force further increases. Pure iron is a soft magnetic alloy that can be bent. In addition, Figures 5 and 6
The figure shows the relationship between saturation magnetic flux density, maximum energy product, and attractive force.
保持板の取り付ける取手の大きさおよび形状は、保持板
が鋳撤内に確実に固定できる程度のものであれば良い、
また、取手を取り付ける位置は第2図(a)に示すよう
に保持板の側面でも良く、また第2図(b)および(c
)に示すように保持板の上面中央または側面に添わせる
ようにしても良い、なお、この取手は鋳接後に取り除か
れる。The size and shape of the handle to which the retaining plate is attached should be such that the retaining plate can be securely fixed in the casting.
Furthermore, the handle may be attached to the side surface of the holding plate as shown in Fig. 2(a), or may be attached to the side of the holding plate as shown in Fig. 2(b) and (c).
), the handle may be attached to the center or side of the upper surface of the retaining plate; however, this handle is removed after welding.
また、本発明の義歯アタッチメントにおいては、接合部
の溶接はレーザ溶接または電子ビーム溶接を用いること
ができるが、溶接による溶は込み深さがQ、Q2mm以
上であって、スペーサの高さ以下とすることが好ましい
、接合部の溶接の溶は込み深さが0.02+a+s以下
であると、接ぎ部の充分な強度が得られず、また唾液に
対するシール性が確保できないからである。逆に、接合
部の溶接の溶は込み深さがスペーサの高さ以上になると
、磁石体に溶接の熱影響が及び磁性体の磁気特性を劣化
するからである。In addition, in the denture attachment of the present invention, laser welding or electron beam welding can be used to weld the joint, but the penetration depth by welding should be Q, Q2 mm or more and not more than the height of the spacer. This is because if the penetration depth of welding the joint is less than 0.02+a+s, sufficient strength of the joint cannot be obtained and sealing performance against saliva cannot be ensured. Conversely, if the weld penetration depth of the joint exceeds the height of the spacer, the magnetic body will be affected by the heat of the welding and the magnetic properties of the magnetic body will deteriorate.
なお、本発明においては、スペーサ高さは005〜1.
0−とすることが好ましい、スペーサ高さが0.05+
am以下であると充分な耐摩耗性を確保することが困難
であり、従ってシール性および接合部の充分な強度も得
られない、しかし、スペーサ高さが1.0曽−を超える
と、磁気吸引力が充分でなくなる。In addition, in the present invention, the spacer height is 005 to 1.
Spacer height is preferably 0.05+
If the spacer height exceeds 1.0 am, it will be difficult to ensure sufficient wear resistance, and therefore, sufficient sealing performance and strength of the joint will not be obtained. However, if the spacer height exceeds 1.0 mm, magnetic The suction power is not sufficient.
また、接合部の耐食性を向上させるため、ヨークには重
量比でC,0,03%以下、Cr;11〜30%、MO
;4%以下の耐食軟磁性合金を用い、スペーサおよびキ
ャップにはTiまたはTi合金もしてはC:0.03°
GCI下の7m磁性ステンレス鋼を用いることが好まし
い。なお、耐食軟磁性合金には必要に応じてNbまたは
T1を添加することも可能である。In addition, in order to improve the corrosion resistance of the joint, the yoke has a weight ratio of C of 0.03% or less, Cr of 11 to 30%, MO
; Use a corrosion-resistant soft magnetic alloy of 4% or less, and use Ti or Ti alloy for the spacer and cap; C: 0.03°
Preferably, 7m magnetic stainless steel under GCI is used. Note that it is also possible to add Nb or T1 to the corrosion-resistant soft magnetic alloy as necessary.
[作用]
本発明の義歯アタッチメントの根面板に接合する保持板
は、根面板に鋳接するに際して、取手を取り付けたので
、鋳型内の所定の位置に確実に固定することができ、根
面板と保持板のずれがなく、優れた吸引力を確保するこ
とができる。[Function] The holding plate that is joined to the root plate of the denture attachment of the present invention has a handle attached to it when it is cast-welded to the root plate, so it can be securely fixed at a predetermined position in the mold, and the holding plate and the root plate can be securely fixed. There is no slippage of the plates, ensuring excellent suction power.
本発明の義歯アタッチメントの磁性体は、キャップとヨ
ークおよびスペーサとの接合部、ヨークとスペーサの接
合部を溶接により相接する両部材を完全に溶は込ませて
接合したので、境界面が消失し、唾液の侵入を完全に防
ぐことができる。これにより磁性体は唾液の侵入による
腐食から完全に保護される。また、接合部の耐食性は、
母材と同等かそれ以上となり、接合部からの腐食、電食
のおそれはない。The magnetic material of the denture attachment of the present invention is welded to the joints of the cap, yoke, and spacer, and the joints of the yoke and spacer by completely welding the two adjoining members, so the interface disappears. This completely prevents saliva from entering. This completely protects the magnetic material from corrosion due to the ingress of saliva. In addition, the corrosion resistance of the joints is
It is equivalent to or better than the base metal, and there is no risk of corrosion or electrolytic corrosion from the joints.
さらに、接合部の強度はろ゛う付けに比較して高く、機
械的応力による破損がなく、また接合部が摩滅するおそ
れがない、また、接合部は耐久力が優れ、非常に長期に
互って耐食性は安定し、剥離のおそれもない。In addition, the strength of the joint is higher than that of soldering, there is no damage due to mechanical stress, and there is no risk of joint wear.The joint has excellent durability and can be used for a very long time. Corrosion resistance is stable and there is no risk of peeling.
[実施例]
本発明の実施例について従来例と共に説明し、本発明の
効果を明らかにする。[Example] Examples of the present invention will be described together with conventional examples to clarify the effects of the present invention.
先ず、本発明が適用される義歯アタッチメントの構造に
ついて説明する。第3図は本発明が適用される義歯アタ
ッチメントの断面図、第4図は磁性体の分解斜視図であ
る。スペーサ13は耐食非磁性合金からなり、磁性体1
0の根面板側の中央を横断するように配置され、その両
側には耐食軟磁性合金からなる一対のヨーク11.11
が根面板93に向けて立設され、スペーサ13を挟持す
る形となっている。磁石12は一対のヨーク11.11
の間に嵌挿され、一方のヨーク11にN極が、他方のヨ
ーク11にS極が相接するようにしてスペーサ13の上
に配置されている。キャップ14は耐食非磁性合金から
なり、スペーサ13、ヨーク11.11および磁石12
が組み合わされて一体となったものを、根面板に対面す
る下面を除いて全周面を覆っている。また、根面板93
の磁性体側には保持板96が鋳接により接着されている
。First, the structure of a denture attachment to which the present invention is applied will be explained. FIG. 3 is a sectional view of a denture attachment to which the present invention is applied, and FIG. 4 is an exploded perspective view of a magnetic body. The spacer 13 is made of a corrosion-resistant nonmagnetic alloy, and the magnetic material 1
A pair of yokes 11 and 11 made of a corrosion-resistant soft magnetic alloy are arranged so as to cross the center of the root plate side of 0.
is erected toward the base plate 93, and is shaped to sandwich the spacer 13. The magnet 12 is connected to a pair of yokes 11.11
The spacer 13 is disposed on the spacer 13 so that the north pole is in contact with one yoke 11 and the south pole is in contact with the other yoke 11. The cap 14 is made of a corrosion-resistant non-magnetic alloy, and includes the spacer 13, the yoke 11.11 and the magnet 12.
are combined to form a single body, which covers the entire circumference except for the lower surface facing the root plate. In addition, the root plate 93
A retaining plate 96 is bonded to the magnetic body side of the magnetic body by casting.
根面板93に保持板96を鋳接するには、取手97を取
り付けた保持板96を根面板形状をしだロウ模型の所定
の位置に固定し、第1図に示すように周囲をバックアッ
プとなる鋳型材で固めて鋳型98を造型する。ロウ模型
を脱ろうした後、湯口99から溶湯を注入して根面板9
3を鋳造すると同時に保持板97を鋳接する。To weld the retaining plate 96 to the base plate 93, fix the retaining plate 96 with the handle 97 attached to the base plate shape in a predetermined position on the shidarou model, and use the surrounding area as a backup as shown in Fig. 1. The mold material is solidified to form a mold 98. After removing the wax model, pour molten metal through the sprue 99 and attach the base plate 9.
At the same time as casting 3, the retaining plate 97 is cast-welded.
以上の構成からなる義歯アタッチメントについて、本発
明@A〜Cとして第1表〜第3表に示すように、各部品
の寸法、磁気特性および材料を3通り選んで、レーザ溶
接により接合した。Regarding the denture attachment having the above configuration, as shown in Tables 1 to 3 as the present invention @A to C, three dimensions, magnetic properties, and materials of each part were selected and joined by laser welding.
また、比較例りとして構造は本発明品と同じであるが、
保持板93に取手97を付けていない義歯アタッチメン
トについても、第4表に示す各部の寸法、磁気特性およ
び材料により、レーザ溶接により接合して調製した。In addition, as a comparative example, the structure is the same as the product of the present invention, but
A denture attachment without a handle 97 attached to the holding plate 93 was also prepared by joining by laser welding according to the dimensions, magnetic properties, and materials of each part shown in Table 4.
さらに、従来例として、構造および材質の異なる義歯ア
タッチメント(従来例EおよびF)についても、第5表
および第6表に示す各部材の寸法、磁気特性および材料
により、歯科用接着剤により接着した。なお、従来例E
の義歯アタッチメントの磁性体は第7図に示すごとく、
断面逆U字のヨーク71と、その中に上下方向にS極と
N極を配した磁石72とよりなる。磁石72は保持板9
6を接着した根面板93と直接接触する状態にある。Furthermore, as conventional examples, denture attachments with different structures and materials (Conventional Examples E and F) were bonded with dental adhesive according to the dimensions, magnetic properties, and materials of each member shown in Tables 5 and 6. . In addition, conventional example E
The magnetic material of the denture attachment is as shown in Figure 7.
It consists of a yoke 71 with an inverted U-shaped cross section, and a magnet 72 in which an S pole and an N pole are arranged vertically. The magnet 72 is attached to the holding plate 9
6 is in direct contact with the root plate 93 to which is adhered.
また、従来例Fの義歯アタッチメントは第8図に示すご
とく、前記従来例Eと同じ構造の磁性体に保持板96と
対向する部分全面に、非磁性箔73を配設したものであ
る。Furthermore, as shown in FIG. 8, the denture attachment of Conventional Example F has a magnetic material having the same structure as that of Conventional Example E, with a non-magnetic foil 73 disposed on the entire surface of the portion facing the retaining plate 96.
以上のようにして調製した本発明例、比較例および従来
例の義歯アタッチメントについて、耐食性、耐摩耗性、
鋳接状態および吸引力について測定し、測定結果を第7
表に示しな。Regarding the denture attachments of the present invention example, comparative example, and conventional example prepared as described above, corrosion resistance, abrasion resistance,
Measure the welding condition and suction force, and submit the measurement results to the seventh
Show it in the table.
耐食性については、磁性体を37℃の人口唾液中に、1
000時間浸漬した後の変色度で評価し、変色しなかっ
たものについてはO1変色が見られたものは×で示した
。Regarding corrosion resistance, magnetic material was added to artificial saliva at 37°C for 1
The degree of discoloration after immersion for 000 hours was evaluated, and those with no discoloration and those with O1 discoloration were marked with an x.
耐摩耗性については、根面板と磁性体とを500gの荷
重で1000回擦った後のアタッチメント側表面の状態
を以で評価し、耐摩耗性が優秀で変化のなかったものに
ついてはOで、欠けた部分の見られたものについては×
で示した。Regarding abrasion resistance, the condition of the attachment side surface after rubbing the root plate and the magnetic material 1000 times with a load of 500 g was evaluated as follows, and those with excellent abrasion resistance and no change were rated O, For those with missing parts: ×
It was shown in
吸引力については、磁性体と根面板との間の磁気吸引力
(g)を測定した。Regarding the attraction force, the magnetic attraction force (g) between the magnetic body and the root plate was measured.
鋳接状態については、鋳接後の保持板の位置により評価
した。保持板のずれがなくうまく鋳接できたものについ
てはO5保持板がずれてうまく鋳接できなかったものに
ついては×で示した。なお、従来例EおよびFは、本発
明における保持板に該当する部品がなく、保持板の根面
板への鋳接は考慮しなくて良いため、鎖接状態は評価し
ていない。The welding condition was evaluated based on the position of the retaining plate after welding. The cases in which the holding plate was not displaced and the welding was successful were marked with an x, and the cases in which the O5 holding plate was displaced and the welding was not successful were marked with an x. In addition, in Conventional Examples E and F, there is no part corresponding to the retaining plate in the present invention, and there is no need to consider the casting welding of the retaining plate to the root plate, so the chain contact state was not evaluated.
(以下余白)
第7表の測定結果に示したように、第5表の従来例Eお
よび第6表の従来例Fは、吸引力が200〜300gと
低く、接合部が共に接着剤付けであるため、耐食性、耐
摩耗性が共に劣る。(Left below) As shown in the measurement results in Table 7, the conventional example E in Table 5 and the conventional example F in Table 6 have a low suction force of 200 to 300 g, and both joints are glued. Therefore, both corrosion resistance and abrasion resistance are inferior.
これに対して本発明例である第1表〜第3表の発明例A
〜Cおよび比較例りは、キャップ、ヨークおよびスペー
サの根面板側の境界面を溶接したことにより、耐食性お
よび耐摩耗性がいずれも優れており、吸引力も700g
以上と優れている。In contrast, invention examples A in Tables 1 to 3, which are examples of the present invention,
~C and comparative example have excellent corrosion resistance and wear resistance due to welding of the interface between the cap, yoke, and spacer on the root plate side, and the suction force is also 700 g.
The above is excellent.
鋳接状態に間しては、本発明例A〜Cはいずれも保持板
のずれがなくうまく鋳接できているが、比較例りは取手
を取り付けずに鋳接したので、保持板のずれがありうま
く鋳接できていなかった。In the welding state, all of the invention examples A to C were successfully welded without any displacement of the retaining plate, but the comparative example was welded without the handle attached, so there was no displacement of the retaining plate. It was not possible to weld properly.
[発明の効果]
本発明は、根面板に接着した保持板と根面板に対して垂
直な一対のヨークの間に希土類磁石の磁石体を配置し、
かつ該磁石体の下面に非磁性合金のスペーサを配置し、
ヨークとスペーサの根面板側を除いてキャップで被冠し
た磁性体とからなる義歯アタッチメントにおいて、根面
板に保持板を鋳接するに際し、保持板に取手を取り付け
ると共に、磁性体のキャップ、ヨークおよびスペーサの
根面板側の境界面を溶接によって接合したことを特徴と
するものであって、保持板のずれがないので安定した根
面板と磁性体の吸引力が得られ、さらに磁性体の各部材
の境界部が完全に消失するように接合部が溶は込むので
、完全な防水性が得られ、磁石体が腐食から保護される
。また、接合部は耐食性に優れ、充分な強度を有し、耐
摩耗性に優れる。[Effects of the Invention] The present invention arranges a rare earth magnet between a holding plate adhered to the root plate and a pair of yokes perpendicular to the root plate,
and placing a non-magnetic alloy spacer on the lower surface of the magnet,
In a denture attachment consisting of a yoke and a magnetic material covered with a cap except for the root plate side of the spacer, when the retainer plate is cast-welded to the root plate, a handle is attached to the retainer plate, and the magnetic cap, yoke, and spacer are The feature is that the boundary surface on the side of the root plate is joined by welding, and as there is no displacement of the holding plate, a stable attraction force between the root plate and the magnetic material is obtained, and furthermore, the attraction of each member of the magnetic material is The joint is melted so that the boundary completely disappears, resulting in complete waterproofing and protecting the magnet from corrosion. In addition, the joint has excellent corrosion resistance, sufficient strength, and excellent wear resistance.
【図面の簡単な説明】
第1図は本発明例により根面板に保持板を鋳接する際の
鋳接の断面図、第2図(a)(b) (e)は取手の取
り付は例を示す斜視図、第3図は本発明が適用される義
歯アタッチメントの断面図、第4図は第1図の磁性体の
分解斜視図、第5図および第6図は飽和磁束密度および
最大エルネギ−積と吸引力との関係を示す線図、第7図
および第8図は従来の義歯アタッチメントの基本構造を
説明する断面図、第9図は従来の義歯の断面図、第10
図は従来の義歯アタッチメントの磁性体の断面図である
。
1・ 義歯アタッチメント、10 ・・磁性体、11
・・ ヨーク、12・・・磁石、13゜スペーサ、14
・・・キャップ、91・歯槽、93・・・根面板、94
・・・義歯床、95・ ・義歯部、96・・・保持板、
97・・・取手、8・・・従来の義歯アタッチメントの
磁性体
第9112
第10U2
第1図
5J
第2図
(a)
(b)
(c)
第5図
Is 20 25
飽和磁束密度(にG)
最大エネルギー積(MGOe)
襖3図
?A4図
第712
第8図
団 931[Brief explanation of the drawings] Fig. 1 is a sectional view of the welding process when a retaining plate is welded to the base plate according to an example of the present invention, and Fig. 2 (a), (b), and (e) are examples of how the handle is attached. FIG. 3 is a cross-sectional view of a denture attachment to which the present invention is applied, FIG. 4 is an exploded perspective view of the magnetic material shown in FIG. 1, and FIGS. 5 and 6 show saturation magnetic flux density and maximum energy. 7 and 8 are cross-sectional views explaining the basic structure of a conventional denture attachment. FIG. 9 is a cross-sectional view of a conventional denture attachment.
The figure is a cross-sectional view of a magnetic body of a conventional denture attachment. 1. Denture attachment, 10...Magnetic material, 11
...Yoke, 12...Magnet, 13゜Spacer, 14
...cap, 91・alveolar, 93...root plate, 94
... denture base, 95... denture part, 96... retaining plate,
97...Handle, 8...Magnetic material of conventional denture attachment No. 9112 No. 10U2 Fig. 1 5J Fig. 2 (a) (b) (c) Fig. 5 Is 20 25 Saturation magnetic flux density (to G) Maximum energy product (MGOe) Fusuma 3 diagram? A4 drawing 712 8th drawing group 931
Claims (2)
磁性合金からなる保持板と、前記根面板に対向するよう
義歯床内に埋設される磁性体とからなる義歯アタッチメ
ントであって、 前記磁性体は、根面板側に設けた耐食非磁性合金からな
るスペーサと、前記スペーサを挟持して前記根面板側に
向けて立設した耐食軟磁性合金からなる一対のヨークと
、前記スペーサの反根面側にS極とN極を前記両ヨーク
に対向させて設けた磁石と、前記磁石と前記一対のヨー
クおよび前記スペーサの根面板側を除いて被冠したキャ
ップとよりなる磁性体である義歯アタッチメントにおい
て、 前記根面板に前記保持板を鋳接するに際し、前記保持板
に取手を取り付けたことを特徴とする義歯アタッチメン
ト。(1) A denture attachment consisting of a retaining plate made of a soft magnetic alloy bonded to the magnetic side of a root plate embedded in the tooth root, and a magnetic body embedded in the denture base so as to face the root plate, The magnetic body includes a spacer made of a corrosion-resistant non-magnetic alloy provided on the root plate side, a pair of yokes made of a corrosion-resistant soft magnetic alloy that sandwich the spacer and stand upright toward the root plate side, and the spacer. A magnetic body comprising a magnet having an S pole and an N pole facing the two yokes on the opposite root side, and a cap that covers the magnet, the pair of yokes, and the spacer except for the root plate side. A certain denture attachment, wherein a handle is attached to the retaining plate when the retaining plate is cast-welded to the root plate.
記スペーサの根面板側の境界面を溶接によつて接合した
ことを特徴とする特許請求の範囲第1項に記載の義歯ア
タッチメント。(2) The denture attachment according to claim 1, wherein the cap, the yoke, and the boundary surface of the spacer on the root plate side of the magnetic material are joined by welding.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2182139A JPH0728876B2 (en) | 1990-07-10 | 1990-07-10 | Method for manufacturing denture attachment and holding plate for denture attachment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2182139A JPH0728876B2 (en) | 1990-07-10 | 1990-07-10 | Method for manufacturing denture attachment and holding plate for denture attachment |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0471551A true JPH0471551A (en) | 1992-03-06 |
JPH0728876B2 JPH0728876B2 (en) | 1995-04-05 |
Family
ID=16113031
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2182139A Expired - Lifetime JPH0728876B2 (en) | 1990-07-10 | 1990-07-10 | Method for manufacturing denture attachment and holding plate for denture attachment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0728876B2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0683008U (en) * | 1993-05-26 | 1994-11-29 | 日立金属株式会社 | Holding plate for denture stabilization |
JPH07148182A (en) * | 1993-11-26 | 1995-06-13 | Tetsuaki Kanefuji | Head for artificial dental root |
WO1996002206A1 (en) * | 1994-07-15 | 1996-02-01 | Hitachi Metals, Ltd. | Artificial tooth stabilizing permanent magnet structure, artificial tooth stabilizing keeper, and artificial tooth stabilizing magnetic attachment |
US6302694B1 (en) | 1999-11-12 | 2001-10-16 | Aichi Steel Corporation Ltd. | Keeper for dental magnetic attachment and its removal method |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63122449A (en) * | 1986-09-15 | 1988-05-26 | アンドレ.ガレル | Coercive apparatus for detachable denture |
JPH01303145A (en) * | 1988-06-01 | 1989-12-07 | Aichi Steel Works Ltd | Artificial tooth attachment |
-
1990
- 1990-07-10 JP JP2182139A patent/JPH0728876B2/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63122449A (en) * | 1986-09-15 | 1988-05-26 | アンドレ.ガレル | Coercive apparatus for detachable denture |
JPH01303145A (en) * | 1988-06-01 | 1989-12-07 | Aichi Steel Works Ltd | Artificial tooth attachment |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0683008U (en) * | 1993-05-26 | 1994-11-29 | 日立金属株式会社 | Holding plate for denture stabilization |
JPH07148182A (en) * | 1993-11-26 | 1995-06-13 | Tetsuaki Kanefuji | Head for artificial dental root |
WO1996002206A1 (en) * | 1994-07-15 | 1996-02-01 | Hitachi Metals, Ltd. | Artificial tooth stabilizing permanent magnet structure, artificial tooth stabilizing keeper, and artificial tooth stabilizing magnetic attachment |
US5788493A (en) * | 1994-07-15 | 1998-08-04 | Hitachi Metals, Ltd. | Permanent magnet assembly, keeper and magnetic attachment for denture supporting |
US6302694B1 (en) | 1999-11-12 | 2001-10-16 | Aichi Steel Corporation Ltd. | Keeper for dental magnetic attachment and its removal method |
Also Published As
Publication number | Publication date |
---|---|
JPH0728876B2 (en) | 1995-04-05 |
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