JPH02295558A - Denture attachment - Google Patents
Denture attachmentInfo
- Publication number
- JPH02295558A JPH02295558A JP11659689A JP11659689A JPH02295558A JP H02295558 A JPH02295558 A JP H02295558A JP 11659689 A JP11659689 A JP 11659689A JP 11659689 A JP11659689 A JP 11659689A JP H02295558 A JPH02295558 A JP H02295558A
- Authority
- JP
- Japan
- Prior art keywords
- denture attachment
- denture
- spacer
- attachment body
- yokes
- 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 24
- 238000005260 corrosion Methods 0.000 claims abstract description 15
- 230000007797 corrosion Effects 0.000 claims abstract description 15
- 229910001004 magnetic alloy Inorganic materials 0.000 claims abstract description 13
- POIUWJQBRNEFGX-XAMSXPGMSA-N cathelicidin Chemical compound C([C@@H](C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CO)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H]([C@@H](C)CC)C(=O)NCC(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CC=1C=CC=CC=1)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](C(C)C)C(=O)N[C@@H](CCC(N)=O)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CC(O)=O)C(=O)N[C@@H](CC=1C=CC=CC=1)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CC(N)=O)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](C(C)C)C(=O)N1[C@@H](CCC1)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H]([C@@H](C)O)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CO)C(O)=O)NC(=O)[C@H](CC=1C=CC=CC=1)NC(=O)[C@H](CC(O)=O)NC(=O)CNC(=O)[C@H](CC(C)C)NC(=O)[C@@H](N)CC(C)C)C1=CC=CC=C1 POIUWJQBRNEFGX-XAMSXPGMSA-N 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 238000002845 discoloration Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910052761 rare earth metal Inorganic materials 0.000 description 3
- 150000002910 rare earth metals Chemical class 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 210000000214 mouth Anatomy 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000000120 Artificial Saliva Substances 0.000 description 1
- 241000221535 Pucciniales Species 0.000 description 1
- 229910052772 Samarium Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 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
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- KZUNJOHGWZRPMI-UHFFFAOYSA-N samarium atom Chemical compound [Sm] KZUNJOHGWZRPMI-UHFFFAOYSA-N 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Dental Prosthetics (AREA)
Abstract
Description
【発明の詳細な説明】
し産業上の利用分野］
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、詳しくは単位体積当たりの磁気吸引力を向上し、小
型化を図った義歯アタッチメントに関する．
［従来の技術コ
従来、磁気吸引力を利用した義歯としては、例えば第７
図および第８図に示されるものが提案されている（特開
昭６２−２３１６５３号公報）．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９４内には前記根面板９３
に対向する位置に義歯アタッチメント８を有している．
該義歯アタッチメント８は第８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
石体８２を配置したものである。しかして、上記磁石体
８２としては、強力な磁力を有するＳＭ（サマリウム）
− Ｃ ｏ（コバルト》系の希土類磁石が用いられて
いる．
［発明が解決しようとする課題］
しかしながら、従来の磁石体は、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．
また、磁石体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、磁石体が錆びて急速な
吸引力の減衰と共に安全上も問題があった．また、防錆
のために前記公報にごとく、ステンレス鋼等の非磁性合
金のゲースで磁石体全体を被覆した場合には、磁石体と
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．
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
した義歯アタッチメントを提案した．
前記掲案に係る義歯アタッチメントの構造について説明
する．第１図は義歯アタッチメントの分解斜視図、第２
図は第１図の■−■線における断面図である．図におい
て下が根面板側であるが、スペーサ１２は耐食非磁性合
金からなり、義歯アタッチメント本体１０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１４、１４が根面板側に向
けて立設され、スペーサ１２を挟持する形となっている
．磁石体１６は一対のヨーク１４、１４の間に嵌挿され
、一方のヨーク１４にＮ極が２他方のヨークにＳ極が相
接するようにしてスペーサ１２の上に配置されている．
キャップ１８は耐食非磁性合金からなり、スペーサ１２
、ヨーク１４、１４および磁石体１６が組み合わされて
一体となった義歯アタッチメンと本体１０を、根面板に
対面する下面を除いて全周面を覆っている．しかして、
前記提案における義歯アタッチメントの各部材の形状、
磁気特性および材質については、第１表に示す通りであ
る。なお、義歯アタッチメント体積Ｖは３０．０ｍ輪コ
であり、磁気吸引力Ｆは７２０ｇであって、単位体積当
たりの磁気吸引力Ｆ／Ｖは２ ４ ｇ／ ｍｍ”である
．（ 以 下 余 白 ）
しかしながら、前記諸元による義歯アタッチメントでは
、義歯アタッチメント本体の体積が大きく、単位体積当
たりの磁気吸引力も未だ充分でない
本発明は前記提案の義歯アタッチメントにおける前記の
ごとき問題点に鑑みてなされたもので、義歯アタッチメ
ントを小型化するとともに、単位体積あたりの磁気吸引
力をさらに向上させた義歯アタッチメントを提供するこ
とを目的とする．［課題を解決するための手段］
発明者は第３Ｉ２ｌに示す義歯アタッチメント本体の諸
元にツイテ、Ｘ＝ｂ／ａ，Ｙ＝Ｓｍ／Ｓ，Ｚ＝Ｈ／Ｓの
３つの要素にまとめるとともに、この３つの要素と単位
体積当たりの磁気吸引力Ｆ／Ｖとの関係につき鋭意研究
を重ねた．その結果、第４図に示すように、次式を澗足
する範囲においてＦ／■≧２５の領域の存在することを
見出だして本発明を完成した．
本発明の義歯アタッチメントは、底面中央を横断する耐
食非磁性合金からなるスペーサと、前記スペーサの両側
に立設された一対の略々半円柱状の耐食軟磁性合金から
なるヨークと、前記スペーサと前記一対のヨークで形成
される空間に嵌挿されＳ極とＮ極を前記ヨークに対向さ
せて設けた磁石体とを組み合わせて略々半円柱状にした
義歯アタッチメント本体と、前記義歯アタッチメント本
体の底面を残して全周面を覆うキャップとからなる義歯
アタッチメントにおいて、
Ｘ＝ｂ／ａ，Ｙ＝Ｓｍ／Ｓ，Ｚ＝Ｈ／Ｓとしたとき、次
式を満足することを要旨とする．但し、Ｈ；義歯アタッ
チメント本体高さ（＋ｕｉ）Ｓ；義歯アタッチメント本
体横断面積（ａｍ”）ａ；義歯アタッチメント本体長径
ク一鶴》ｂ；義歯アタッチメント本体短径（ａｍ）Ｓ繭
；磁石体横断面積《ＩＩＩＩ２）
また、第５図はスペーサ厚さとＦ／Ｖの関係について示
す線図であるが、第５図の結果よりＦ／■≧２５を得る
ためには、前記式を満足する義歯アタッチメントにおい
て、スペーサの厚さを０．０５〜１．０ｍｍとすること
が好ましい．さらに、第６図は磁気回路の形成に影響の
ないヨークの肩部の削除体積ＶｄとＦ／Ｖとの関係につ
いて示す線図であるが、第６図の結果よりＦ／Ｖ≧２５
を得るためには、前記式を満足する義歯アタッチメント
において、肩部の削除体積Ｖｄと義歯アタッチメント本
体の体積■の比率Ｖｄ／Ｖを０．２５以下の範囲にする
ことが好ましい。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a denture attachment that utilizes magnetic attraction, and more particularly to a denture attachment that has improved magnetic attraction per unit volume and is miniaturized. [Conventional technology] Conventionally, as a denture using magnetic attraction force, for example, the seventh
What is shown in Fig. 8 and Fig. 8 has been proposed (Japanese Patent Application Laid-Open No. 62-231653). This denture has alveolar 91
A denture part 95 is provided so as to face a root plate 93 made of a magnetic material embedded in an inner root 92. This denture part 95 has a denture base 94 made of plastic or the like below, and inside the denture base 94 is the root plate 93.
It has a denture attachment 8 at a position facing the . As shown in FIG. 8, the denture attachment 8 has a magnet body 82 arranged in a stainless steel case 81 having a projection 83 on the upper part. Therefore, as the magnet 82, SM (samarium) having a strong magnetic force is used.
- A rare earth magnet based on Co (cobalt) is used. [Problem to be solved by the invention] However, all conventional magnet bodies have a low magnetic attraction force of about 200 g to 300 g. is lower than the force of 500 g or more when mechanically holding the teeth between the teeth, which has traditionally been widely used.Also, since the magnet body is easily corroded in the oral cavity, rare earth magnets are often exposed in the oral cavity. In such cases, the magnet body rusts and the attraction force rapidly decreases, which also poses a safety problem.Also, as per the above publication, the magnet body is covered with a gauge made of a non-magnetic alloy such as stainless steel to prevent rust. If the entire body is coated, a non-magnetic alloy will be present between the magnet body and the root plate, which will reduce the attractive force.In view of this problem, the inventors first covered the root plate. A rare-earth magnet is placed between a pair of yokes perpendicular to the yoke, and a non-magnetic alloy spacer is placed on the bottom surface of the magnet, and the yoke and the spacer are covered with a cap except for the root plate side. We have proposed a denture attachment. The structure of the denture attachment according to the above proposal will be explained. Figure 1 is an exploded perspective view of the denture attachment, and Figure 2 is an exploded perspective view of the denture attachment.
The figure is a cross-sectional view taken along the ■-■ line in Figure 1. In the figure, the bottom side is the root plate side, but the spacer 12 is made of a corrosion-resistant non-magnetic alloy and is arranged to cross the center of the root plate side of the denture attachment main body 10, and on both sides there is a pair of spacers made of a corrosion-resistant soft magnetic alloy. The yokes 14, 14 are erected toward the root plate side and are configured to sandwich the spacer 12. The magnet body 16 is inserted between a pair of yokes 14, 14, and is arranged on the spacer 12 such that one yoke 14 has a north pole and the other yoke has a south pole in contact with each other.
The cap 18 is made of a corrosion-resistant nonmagnetic alloy, and the spacer 12
, the yokes 14, 14, and the magnet body 16 are combined to form an integrated denture attachment and main body 10, covering the entire circumferential surface except for the lower surface facing the root plate. However,
The shape of each member of the denture attachment in the above proposal,
The magnetic properties and materials are as shown in Table 1. The denture attachment volume V is 30.0 m hoop, the magnetic attraction force F is 720 g, and the magnetic attraction force F/V per unit volume is 24 g/mm. ) However, in the denture attachment according to the above specifications, the volume of the denture attachment main body is large, and the magnetic attraction force per unit volume is still insufficient.The present invention was made in view of the above-mentioned problems in the proposed denture attachment. It is an object of the present invention to provide a denture attachment that is miniaturized and further improves the magnetic attraction force per unit volume. [Means for Solving the Problem] The inventor has developed the denture attachment shown in No. 3I2l. The specifications of the main body are summarized into three elements: X=b/a, Y=Sm/S, Z=H/S, and the relationship between these three elements and the magnetic attraction force F/V per unit volume. As a result, we have completed the present invention by discovering that a region of F/■≧25 exists within the range that satisfies the following equation, as shown in Figure 4. The denture attachment includes a spacer made of a corrosion-resistant non-magnetic alloy that crosses the center of the bottom surface, a pair of approximately semi-cylindrical yokes made of a corrosion-resistant soft magnetic alloy that are erected on both sides of the spacer, and a pair of yokes that are made of a corrosion-resistant soft magnetic alloy and are arranged on both sides of the spacer. A denture attachment body that is fitted into a space formed by a yoke and has an S pole and a N pole facing the yoke to form a substantially semi-cylindrical denture attachment body, and a bottom surface of the denture attachment body is left intact. In a denture attachment consisting of a cap that covers the entire circumferential surface, when X=b/a, Y=Sm/S, and Z=H/S, the gist is to satisfy the following formula.However, H; Denture attachment body height (+ui) S; Denture attachment body cross-sectional area (am”) a; Denture attachment body major axis Kuichizuru》b; Denture attachment body minor axis (am) S cocoon; Magnet body cross-sectional area《III2) , FIG. 5 is a diagram showing the relationship between spacer thickness and F/V. From the results in FIG. 5, in order to obtain F/■≧25, the spacer thickness must be It is preferable that the width is 0.05 to 1.0 mm. Furthermore, Fig. 6 is a diagram showing the relationship between the removed volume Vd of the shoulder portion of the yoke, which does not affect the formation of the magnetic circuit, and F/V.
In order to obtain the following, in a denture attachment that satisfies the above formula, it is preferable that the ratio Vd/V of the volume removed at the shoulder portion Vd to the volume 2 of the denture attachment main body is in the range of 0.25 or less.
なお、本発明が適用される義歯アタッチメントの磁石体
には最大エルネギー積は２ ０ Ｍ Ｇ Ｏ ｅのもの
を用いることが好ましく、またヨークには飽和磁束密度
が１３０００Ｇ以上のものを用いることが好ましい．ま
た、根面板の厚さは１．５１以下とすることが好ましく
、キャップの厚さは０．３鶴一以下とすることが好まし
い．
［作用］
本発明の義歯アタッチメントは、Ｘ＝ｂ／ａ．Ｙ＝Ｓｓ
／Ｓ ．Ｚ＝Ｈ／Ｓとしたと
き、Ｆ／Ｖ≧２５を満・足する次式
を満足する諸元を具備するので、単位体積当たりの磁気
吸引力Ｆ／Ｖが従来の２ ４ ｇ／ ａｍコから２５〜
３５ｇ／鴎鴎３へと向上する．
また、これにより義歯アタッチメント本体の体積を３０
ｓａコから２５ｍｍ’以下に小型化することができる．
［実施例］
本発明の好適な実施例について、以下比較例とともに説
明し、本発明の効果を明らかにする．本発明例として磁
石体、ヨーク、スペーサおよび根面板に第２表に示す磁
気特性の材料を用い、第３表に示すように、本発明で規
制する各部材の諸元を具備する義歯アタッチメントを調
製した．また、比較のために比較例として、第４表に示
すように、本発明において規制する範囲を逸説する各部
材の諸元を具備する義歯アタッチメントを調製した。な
お、第３表および第４表において、ｆ（Ｘ、Ｙ．Ｚ）は
前記式を示す．
調製した本発明例の義歯アタッチメントと比較例の義歯
アタッチメントについて、磁気吸引力Ｆおよび体積Ｖを
測定するとともに、単位体積当たりの磁気吸引力Ｆ／Ｖ
を計算した．また、耐食性、耐久性、および耐摩耗性に
ついて測定し、得られた結果は、第５表および第６表に
併せて示した．なお、 耐食性については、義歯アタッ
チメントを３７℃の人口唾液中に、１０００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
Ｏ、変色が見られたものはＸで示した．耐摩耗性につい
ては、根面板と義歯アタッチメントとをｌｋ．の荀重で
１０００回擦った後のアタッチメント側表面の状態を以
て評価し、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Ｘで示
した．なお、本実施例はヨーク材として１７Ｃｒ−２Ｍ
ｏ鋼を使用したが、この他にも１３Ｃｒステンレス鋼、
２６Ｃ『系ステンレス鋼等の飽和磁束密度が１３０００
以上、透磁率３０００以上の高耐食軟磁性合金を使用し
ても、同様な結果が得られることが確認された。In addition, it is preferable to use a magnet body of a denture attachment to which the present invention is applied with a maximum energy product of 20 M G O e, and a yoke with a saturation magnetic flux density of 13000 G or more. ．． Further, the thickness of the root plate is preferably 1.51 mm or less, and the thickness of the cap is preferably 0.3 mm or less. [Function] The denture attachment of the present invention has X=b/a. Y=Ss
/S. When Z=H/S, it has the specifications that satisfy the following formula that satisfies F/V≧25, so the magnetic attraction force F/V per unit volume is equal to the conventional 24 g/am co. From 25~
Increased to 35g/Oguro 3. This also reduces the volume of the denture attachment body to 30
It can be downsized from sako to 25mm or less. [Example] Preferred examples of the present invention will be explained below along with comparative examples to clarify the effects of the present invention. As an example of the present invention, a denture attachment is constructed using materials with magnetic properties shown in Table 2 for the magnet body, yoke, spacer, and root plate, and having the specifications of each member regulated by the present invention as shown in Table 3. Prepared. In addition, as a comparative example for comparison, a denture attachment was prepared having specifications of each member that deviate from the range regulated by the present invention, as shown in Table 4. In addition, in Tables 3 and 4, f(X, Y.Z) indicates the above formula. Regarding the prepared denture attachment of the present invention example and the denture attachment of the comparative example, the magnetic attraction force F and volume V were measured, and the magnetic attraction force F/V per unit volume was measured.
was calculated. Corrosion resistance, durability, and abrasion resistance were also measured, and the obtained results are also shown in Tables 5 and 6. Corrosion resistance was evaluated by the degree of discoloration after immersing the denture attachment in artificial saliva at 37°C for 1000 hours, and those with no discoloration were given an O, and those with discoloration were given an X. Regarding wear resistance, the root plate and denture attachment were evaluated as lk. The condition of the surface of the attachment after being rubbed 1000 times with the same weight was evaluated, and those with excellent wear resistance and no change were given an O, and those with chipped parts were given an X. In this example, 17Cr-2M was used as the yoke material.
o steel was used, but in addition to this, 13Cr stainless steel,
The saturation magnetic flux density of 26C stainless steel is 13,000
As described above, it has been confirmed that similar results can be obtained even if a highly corrosion-resistant soft magnetic alloy with a magnetic permeability of 3000 or more is used.
（以下余白）
比較例を示した第６表の結果より、ｆ（Ｘ，Ｙ、Ｚ》が
１．３３〜４．６５であった比較例は、単位体積当たり
の磁気吸引力Ｆ／Ｖはスペーサを極端の薄くした場合以
外は、１２〜２ ４ ｇ／ ａｍ’であり、また義歯ア
タッチメントの体積の小型化が達成されなかった．耐食
性および耐摩耗性については、スペーサが極端に薄かっ
た場合に好ましい結果が得られなかった．
これに対して本発明例を示した第５表から知られるよう
に、ｒ（ｘ，ｙ，ｚ）が１．０以下であって、単位体積
当たりの磁気吸引力Ｆ／Ｖが２５〜３５．５であって、
磁気吸引力が著しく改善され、また体積も１５〜３０で
あって、義歯アタッチメントの木積の小型化が達成され
たことが確認された。また、耐食性および耐摩耗性につ
いてもいずれも満足すべき結果が得られた．
［発明の効果コ
本発明は義歯アタッチメントは，本体を構成する各部材
の諸元の間に単位体積当たりの磁気吸引力を２ ５ ｇ
／ ｍ＋＊’以上にする関係式を見出だしたものであっ
て、この閏係式を満足する諸元を具備せしめることによ
り、単位体積当たりの磁気吸引力Ｆ／Ｖを従来の２ ４
ｇ／ ａｍ’から２５〜３５ｇ／ｌ’へと向上するこ
とができる．また、これにより義歯アタッチメント本体
の体積を３０ｍｍ”から２５＋ｓ噴３以下に小型化する
ことができる．そのため、臨床上のメリットとして施工
が容易となり、あらゆる大きさの歯に対して治療を可能
にするものである．(Left below) From the results in Table 6 showing comparative examples, in the comparative examples where f(X, Y, Z) was 1.33 to 4.65, the magnetic attraction force F/V per unit volume was Except when the spacer was extremely thin, it was 12 to 24 g/am', and a reduction in the volume of the denture attachment was not achieved.As for corrosion resistance and abrasion resistance, when the spacer was extremely thin, On the other hand, as is known from Table 5 showing examples of the present invention, when r(x, y, z) is 1.0 or less, the magnetic field per unit volume is The suction force F/V is 25 to 35.5,
It was confirmed that the magnetic attraction force was significantly improved and the volume was 15 to 30, making it possible to reduce the size of the wooden structure of the denture attachment. Satisfactory results were also obtained for both corrosion resistance and wear resistance. [Effect of the invention] The denture attachment of the present invention has a magnetic attraction force of 25 g per unit volume between the specifications of each member constituting the main body.
/m+*' or more, and by providing specifications that satisfy this leap formula, the magnetic attraction force F/V per unit volume can be reduced to 2 4 compared to the conventional one.
g/am' to 25-35 g/l'. In addition, this allows the volume of the denture attachment body to be reduced from 30 mm to less than 25+s injection 3.As a result, the clinical benefit is that construction is easier, making it possible to treat teeth of all sizes. It is something.
第１図は本発明が適用される義歯アタッチメントの分解
斜視図、第２図は第１図の■一■線における断面図、第
３図は義歯アタッチメント本体の各部の寸法を説明する
斜視図、第４図はｒ（ｘ．ｙ、Ｚ》と単位体積当たりの
磁気吸引力Ｆ／Ｖの関係を示す線図、第５図はスペーサ
の厚さと単位体積当たりの磁気吸引力Ｆ／Ｖの関係を示
す線図、第６図は肩部の削除体積比Ｖｄ／Ｖと単位体積
当なのり磁気吸引力Ｆ／Ｖの関係を示す線区、第７図は
従来の義歯の断面図、第８図は従来の義歯アタッチメン
トの断面図である．
１０・・・義歯アタッチメント本体、１２・スペーサ、
１４・・・ヨーク、１６・・・磁石体、ｌ８・・・キャ
ップ、９１・・・歯槽、９３・・・根面板、９４・・・
義歯床、９５・・・義歯部、８・・・従来の義歯アタッ
チメント第１図
Ｈ
第４図
第２図
第３図
第５図
第６図
肩部の削除体積寄／ＶFIG. 1 is an exploded perspective view of a denture attachment to which the present invention is applied, FIG. 2 is a cross-sectional view taken along line 1 in FIG. 1, and FIG. 3 is a perspective view illustrating dimensions of each part of the denture attachment body. Figure 4 is a diagram showing the relationship between r (x, y, Z) and magnetic attraction force F/V per unit volume, and Figure 5 is a diagram showing the relationship between spacer thickness and magnetic attraction force F/V per unit volume. Figure 6 is a line showing the relationship between shoulder volume removal ratio Vd/V and magnetic attraction force per unit volume F/V, Figure 7 is a cross-sectional view of a conventional denture, and Figure 8 is a cross-sectional view of a conventional denture attachment. 10... denture attachment main body, 12. spacer,
14... Yoke, 16... Magnet, l8... Cap, 91... Alveolar, 93... Root plate, 94...
Denture base, 95... Denture part, 8... Conventional denture attachment Fig. 1 H Fig. 4 Fig. 2 Fig. 3 Fig. 5 Fig. 6 Shoulder removal volume collection/V
Claims (3)
ーサと、前記スペーサの両側に立設された一対の略々半
円柱状の耐食軟磁性合金からなるヨークと、前記スペー
サと前記一対のヨークで形成される空間に嵌挿されＳ極
とＮ極を前記ヨークに対向させて設けた磁石体とを組み
合わせて略々円柱状にした義歯アタッチメント本体と、
前記義歯アタッチメント本体の底面を残して全周面を覆
うキャップとからなる義歯アタッチメントにおいて、 Ｘ＝ｂ／ａ、Ｙ＝Ｓｍ／Ｓ、Ｚ＝Ｈ／Ｓとしたとき、次
式を満足することを特徴とする義歯アタッチメント。 ［（Ｘ−０．７５）＾２／０．２５＾２］＋［（Ｙ−０
．４）＾２／０．３５＾２］＋［（Ｚ−０．１５）＾２
／０．１＾２］≦１但し、Ｈ；義歯アタッチメント本体
高さ（ｍｍ）Ｓ；義歯アタッチメント本体横断面積（ｍ
ｍ＾２）ａ；義歯アタッチメント本体長径（ｍｍ） ｂ；義歯アタッチメント本体短径（ｍｍ） Ｓｍ；磁石体横断面積（ｍｍ＾２）(1) A spacer made of a corrosion-resistant non-magnetic alloy that crosses the center of the bottom surface, a pair of approximately semi-cylindrical yokes made of a corrosion-resistant soft magnetic alloy that are erected on both sides of the spacer, and the spacer and the pair of yokes. a denture attachment main body formed into a substantially cylindrical shape by combining a magnet body that is fitted into a space formed by and has an S pole and a N pole facing the yoke;
In the denture attachment consisting of a cap that covers the entire circumferential surface of the denture attachment body except for the bottom surface, when X=b/a, Y=Sm/S, and Z=H/S, the following formula is satisfied. A unique denture attachment. [(X-0.75)^2/0.25^2]+[(Y-0
．． 4)^2/0.35^2]+[(Z-0.15)^2
/0.1^2]≦1 However, H: Height of the denture attachment body (mm) S: Cross-sectional area of the denture attachment body (m
m^2) a; Major axis of denture attachment body (mm) b; Minor axis of denture attachment body (mm) Sm; Cross-sectional area of magnet body (mm^2)
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 spacer has a thickness of 0.05 to 1.0 mm.
容積比で２５％以下の範囲で削除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。(3) The denture attachment according to claim 1, wherein the shoulder portion of the yoke is removed by a volume ratio of 25% or less to the denture attachment main body.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1116596A JPH0732785B2 (en) | 1989-05-10 | 1989-05-10 | Denture attachment |
| US07/460,073 US5013243A (en) | 1988-06-01 | 1989-06-01 | Denture attachment |
| EP89906451A EP0387350B1 (en) | 1988-06-01 | 1989-06-01 | Artificial tooth attachment |
| PCT/JP1989/000548 WO1989011835A1 (en) | 1988-06-01 | 1989-06-01 | Artificial tooth attachment |
| DE68913510T DE68913510T2 (en) | 1988-06-01 | 1989-06-01 | FASTENING AN ARTIFICIAL TOOTH. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1116596A JPH0732785B2 (en) | 1989-05-10 | 1989-05-10 | Denture attachment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02295558A true JPH02295558A (en) | 1990-12-06 |
| JPH0732785B2 JPH0732785B2 (en) | 1995-04-12 |
Family
ID=14691062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1116596A Expired - Fee Related JPH0732785B2 (en) | 1988-06-01 | 1989-05-10 | Denture attachment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0732785B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5931676A (en) * | 1994-12-27 | 1999-08-03 | Aichi Steel Works, Ltd. | Dental attachment |
| US6229417B1 (en) | 1999-02-23 | 2001-05-08 | Rockwell Technologies, Llc | Operator for an electromagnetic switching device |
-
1989
- 1989-05-10 JP JP1116596A patent/JPH0732785B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5931676A (en) * | 1994-12-27 | 1999-08-03 | Aichi Steel Works, Ltd. | Dental attachment |
| US6229417B1 (en) | 1999-02-23 | 2001-05-08 | Rockwell Technologies, Llc | Operator for an electromagnetic switching device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0732785B2 (en) | 1995-04-12 |
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