JPS5910982B2 - Deer amalgam - Google Patents
Deer amalgamInfo
- Publication number
- JPS5910982B2 JPS5910982B2 JP50153664A JP15366475A JPS5910982B2 JP S5910982 B2 JPS5910982 B2 JP S5910982B2 JP 50153664 A JP50153664 A JP 50153664A JP 15366475 A JP15366475 A JP 15366475A JP S5910982 B2 JPS5910982 B2 JP S5910982B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- tin
- copper
- amalgam
- mercury
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 229910000497 Amalgam Inorganic materials 0.000 title description 17
- 241000282994 Cervidae Species 0.000 title 1
- 229910045601 alloy Inorganic materials 0.000 claims description 42
- 239000000956 alloy Substances 0.000 claims description 42
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 28
- 229910052718 tin Inorganic materials 0.000 claims description 28
- 239000000843 powder Substances 0.000 claims description 27
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 25
- 229910052802 copper Inorganic materials 0.000 claims description 25
- 239000010949 copper Substances 0.000 claims description 25
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 22
- 229910052709 silver Inorganic materials 0.000 claims description 22
- 239000004332 silver Substances 0.000 claims description 22
- 229910052738 indium Inorganic materials 0.000 claims description 14
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims description 14
- 239000000448 dental amalgam Substances 0.000 claims description 6
- 229910001312 Amalgam (dentistry) Inorganic materials 0.000 claims description 5
- 239000011135 tin Substances 0.000 claims description 4
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 23
- 229910052753 mercury Inorganic materials 0.000 description 23
- 230000003068 static effect Effects 0.000 description 9
- 238000002845 discoloration Methods 0.000 description 7
- 238000005507 spraying Methods 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 229910018471 Cu6Sn5 Inorganic materials 0.000 description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
- 229910000765 intermetallic Inorganic materials 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- -1 1 inch or less Chemical compound 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 229910052979 sodium sulfide Inorganic materials 0.000 description 1
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 150000004763 sulfides Chemical class 0.000 description 1
- 210000003781 tooth socket Anatomy 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
- C22C30/04—Alloys containing less than 50% by weight of each constituent containing tin or lead
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K6/00—Preparations for dentistry
- A61K6/80—Preparations for artificial teeth, for filling teeth or for capping teeth
- A61K6/84—Preparations for artificial teeth, for filling teeth or for capping teeth comprising metals or alloys
- A61K6/847—Amalgams
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
- C22C30/02—Alloys containing less than 50% by weight of each constituent containing copper
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C5/00—Alloys based on noble metals
- C22C5/06—Alloys based on silver
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Engineering & Computer Science (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Epidemiology (AREA)
- Plastic & Reconstructive Surgery (AREA)
- Dental Preparations (AREA)
- Powder Metallurgy (AREA)
Description
【発明の詳細な説明】
この発明は、水銀と調合することによって歯科用アマル
ガムを生ずる合金粉末にかかる。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to alloy powders which, when combined with mercury, produce dental amalgams.
この種の合金粉末に必要な特性としては，水銀と調合し
て歯窩に充填する際の硬化時間が適度であること、その
際の作業性が良好なこと、硬化前から経時後にかけて寸
法変化が少いこと、硬化直後から終時後まで各種の機械
的特性が良好なこと耐蝕性が良好なことなどが挙げられ
、こｔらの特性を或る程度充たす合金として、従来は米
国歯科医師会の規格に沿った銀６５％以上、錫２９チ以
下、銅６チ以下、亜鉛２％以下、水銀３チ以下のものが
広く使用されて来た。The characteristics required for this type of alloy powder include: appropriate hardening time when mixed with mercury and filled into tooth sockets, good workability, and dimensional changes from before hardening to after hardening. It has been recommended by American dentists as an alloy that satisfies these properties to a certain extent, as well as having good mechanical properties from immediately after hardening to after hardening, and good corrosion resistance. Materials containing 65% or more of silver, 29% or less of tin, 6% or less of copper, 2% or less of zinc, and 3% or less of mercury have been widely used in accordance with the Society's standards.
しかし、同規格による合金は、硬化後の機械的特性や耐
蝕性が十分ではなかった。However, alloys based on this standard did not have sufficient mechanical properties or corrosion resistance after hardening.
歯科用アマルガムの微視的構造は，合金と水銀とが反応
して形成されたアマルガム中に、合金の未反応粒子が分
散した形になっており、歯利用アマルガムの機械的特性
はこの分散粒子に依存するところが大きい。The microscopic structure of dental amalgam is such that unreacted particles of the alloy are dispersed in the amalgam formed by the reaction between the alloy and mercury, and the mechanical properties of dental amalgam are due to these dispersed particles. Much depends on.
よってこの分散粒子の機械的特性を高めるために前記規
格を越える銅を使用することが行われており、その１例
として米国特許第３，３ ０ ５，３ ５ ６号明細書
に示されたものが存する。Therefore, in order to improve the mechanical properties of the dispersed particles, copper exceeding the above-mentioned standard has been used, and one example of this is shown in U.S. Patent No. 3,305,356. Something exists.
確かに銅の増量は、機械的特性の向上をもたらすが、反
面に変色し易い欠侭を増す。It is true that increasing the amount of copper improves mechanical properties, but on the other hand, it increases defects that are prone to discoloration.
この変色は口中で硫化物と反応して生ずるもので、薄層
で咀しやくにより容易に剥落して新鮮な金属面が現われ
るので、機械的には悪影響はないが，保健土注意しなけ
ればならない。This discoloration is caused by reaction with sulfides in the mouth, and is a thin layer that peels off easily when chewed to reveal a fresh metal surface, so mechanically it does not have any negative effects, but health care must be taken. No.
従って、機械的特性の向上と耐変色性の向上とを両立さ
せるのは極めて困難であった。Therefore, it has been extremely difficult to achieve both improvement in mechanical properties and improvement in color fastness.
発明者は、先に銀、銅、錫、インジウムをそれぞれ６３
．６〜７０％ ３〜９，２、２０〜２５、２〜６重量係
含有する合金を開発したＣ特開昭５０−１４７４１２号
公報参照）が、その合金の粉末は機械的特性及び耐変色
性の面で、従来の合金粉末より優れている。The inventor first produced 63 each of silver, copper, tin, and indium.
．． 6-70% 3-9, 2, 20-25, 2-6 weight ratio was developed (see Japanese Patent Application Laid-Open No. 147412/1983), but the powder of the alloy has poor mechanical properties and color fastness. It is superior to conventional alloy powders in this respect.
ところが、その後の研究により、銀と銅と錫とインジウ
ムとを含有する合金粉末には、先に開発した上述の範囲
外の組戚に、一層優れた性質を有する範囲があることが
発見された。However, subsequent research has discovered that there is a range of alloy powders containing silver, copper, tin, and indium that have even better properties than the previously developed ranges mentioned above. .
この発明は、上述の発見に基き、上記公開特許出願の発
明とは異なる成分範囲で、十分な機械的特性と耐変色性
とを兼備する歯科アマルガム用の合金粉末を実現するこ
とを目的とするものである。This invention is based on the above-mentioned discovery, and aims to realize an alloy powder for dental amalgam that has sufficient mechanical properties and discoloration resistance, using a different composition range from the invention of the above-mentioned published patent application. It is something.
一般に、歯科アマルガム用の合金粉末は、銀と錫と少量
の銅とよシなり、これに水銀を混和するときは、前述の
ように水銀と反応して生成したアマルガム組織中に、未
反応の合金粉末粒子が分散した構造となる。In general, alloy powder for dental amalgam is made of silver, tin, and a small amount of copper, and when mercury is mixed with it, as mentioned above, unreacted It has a structure in which alloy powder particles are dispersed.
このアマルガム組織は、銀を主体としこれと若干の錫と
が水銀と反応して生成された銀アマルガム相と、錫が水
銀と反応して生成された錫アマルガム相とを含み、錫ア
マルガム相は機械的にも化学的にも弱い。This amalgam structure includes a silver amalgam phase that is mainly composed of silver and a small amount of tin that reacts with mercury, and a tin amalgam phase that is produced when tin reacts with mercury. Mechanically and chemically weak.
しかし、錫を或る程度添加しないと．粉末合金の水銀と
の反応が悪く、しかも早く硬化するために使用に不便で
、銀アマルガム相自体の強度も十分でなくなる。However, unless a certain amount of tin is added. The powder alloy reacts poorly with mercury and hardens quickly, making it inconvenient to use, and the strength of the silver amalgam phase itself is insufficient.
よって、十分な量の錫を添加する必要があった。Therefore, it was necessary to add a sufficient amount of tin.
ところが、合金粉末中に多量の銅が含まれていると、錫
アヤルガム相は銅と反応してＣｕ６Ｓｎ５となって析出
することにより、消失することが判った。However, it has been found that when a large amount of copper is contained in the alloy powder, the tin ayalgam phase reacts with the copper and precipitates as Cu6Sn5, thereby disappearing.
この場合、Ｃｕ６Ｓｎ５は安定な金属間化合物で、固体
金属中では反応しなかった銅と錫とが、溶媒となる水銀
中で反応して水銀系から抜け出したものである。In this case, Cu6Sn5 is a stable intermetallic compound in which copper and tin, which did not react in solid metal, react in mercury as a solvent and escape from the mercury system.
このようにして、比較的大きな未反応合金粉末粒子の周
囲を、比較的小さｆｘ Ｃｕ６ Ｓｎ５の結晶粒子が亀
巻き、残りの空間をアマルガム組織が充たす構造になる
が、このアマルガム組織は、若干の錫を含む銀アマルガ
ム相で構成さべ化学的及び機林的に弱一錫アマルガム相
を殆んど含んでいない。In this way, a structure is formed in which relatively small fx Cu6 Sn5 crystal particles are wrapped around relatively large unreacted alloy powder particles, and the remaining space is filled with amalgam structure, but this amalgam structure has a slight Although it is composed of a silver amalgam phase containing tin, chemically and mechanically it contains almost no weak tin amalgam phase.
この構造は、石礫と砂とセメントとからなるコンクリー
トの構造によく似ていて、極めて強固なものである。This structure is very strong and resembles a concrete structure made of gravel, sand, and cement.
この場合、金属間化合物Ｃｕ６Ｓｎ５を生ずる割合は、
大略銅１に対し錫の重量比であるから、水銀と反応した
錫の大部分は、この金属間化合物の生成と、銀アマルガ
ム相に吸収されてこれを強化するためとに消費され、遊
離した錫アマルガム相は悪影響を現わさない程度以下に
減少するものと考えられる。In this case, the rate of forming the intermetallic compound Cu6Sn5 is
Since the weight ratio is approximately 1 part copper to 1 part tin, most of the tin that reacts with mercury is consumed to form this intermetallic compound and to be absorbed into the silver amalgam phase to strengthen it. It is believed that the tin amalgam phase is reduced to a level that does not cause any adverse effects.
しかし、このような銅量の多い合金は、製法により多少
改善できたとしても、一般に耐変色性が悪い欠点を有す
る。However, such alloys with a large amount of copper generally have the disadvantage of poor discoloration resistance, even if they can be improved somewhat by manufacturing methods.
この発明では、銅量の多い合金にインジウムの適量を添
加することにより、耐変色性を改善している。In this invention, discoloration resistance is improved by adding an appropriate amount of indium to an alloy containing a large amount of copper.
しかも，インジウムを添加したことにより、各種の機械
的特性も大幅に向上することが判った。Furthermore, it was found that various mechanical properties were also significantly improved by adding indium.
この発明による合金粉末は、銀と錫と銅とインジウムと
を、それぞれ２０〜７０重量チ，２０〜５０重量係、９
．２〜５０重量係、０．５〜２０重量係宛含有している
。The alloy powder according to the present invention contains silver, tin, copper, and indium at 20 to 70 parts by weight, 20 to 50 parts by weight, and 9 parts by weight, respectively.
．． It contains 2 to 50 weight units and 0.5 to 20 weight units.
ここで、銅だけは最低含有量が９．２％を越えるよう罠
選定される。Here, only copper is selected so that the minimum content exceeds 9.2%.
上述の成分範囲において、銀は、２０重量係より少いと
きは水銀との練和性が悪く、かつ硬化時間が遅くなる欠
点が現われ，７０重量係より多い量は他成分との関連で
使用できない。In the above component range, when silver is less than 20% by weight, it has poor compatibility with mercury and slows curing time, and when silver is used in an amount greater than 70% by weight, it is used in conjunction with other components. Can not.
錫は，２０重量％より少いときは水銀との練和性が悪く
、かつ硬化時間が早過ぎる欠点が現われ、５０重量％よ
り多いときは硬化時間が遅れると共に、大きな経時収縮
を起こす。When tin is less than 20% by weight, the miscibility with mercury is poor and the curing time is too fast. When it is more than 50% by weight, the curing time is delayed and large shrinkage occurs over time.
銅は，９．２重量係以下であるときは前記公開特許出願
の発明の技術的範囲に重なることに加えて、錫アマルガ
ム相による悪影響が現われ易くなり、５０重量係を越え
るときは銀及び錫の添加量が減るために水銀との練利性
が悪化すると共に、硬化時間が遅くなる。When the weight ratio of copper is 9.2 or less, in addition to overlapping the technical scope of the invention of the above-mentioned published patent application, the adverse effects of the tin amalgam phase are likely to appear, and when the weight ratio exceeds 50, copper and silver As the amount of addition decreases, the kneading properties with mercury deteriorate and the curing time becomes slower.
インジウムは、０．５重量係より少いときは添加の効果
がなく、高価であるために２０重量チ以土使用するのは
不経済である。Adding indium has no effect when the amount is less than 0.5% by weight, and it is expensive, so it is uneconomical to use more than 20% by weight.
次に、この発明の実施例を示す。Next, examples of this invention will be shown.
実施例 １
銀６０重量ヂ、錫２４重量チ、銅１３重量％、インジウ
ム３重量係の合金を溶融噴霧により粉末化し、これを熱
処理して得られた合金粉末１に対し、水銀を０．８２の
重量比で練和した結果、硬化時間は７分、２４時間後の
機械的特性は，寸法変化が＋５．７ｔｔ／ｃｍ，加圧変
形が０．０８％、圧縮強度が５ ４ ９ ４ Ｋｇ／ｃ
ｎｉ．静的クリープ特性（練和７日後に３６９Ｋｖ／ｃ
ｒｎの荷重を４時間加え、１時間目と４時間目の変形量
を比較した値）がＯ．１７％であった。Example 1 An alloy containing 60% by weight of silver, 24% by weight of tin, 13% by weight of copper, and 3% by weight of indium was pulverized by melting and spraying, and this was heat-treated to obtain an alloy powder 1 containing 0.82% of mercury. The curing time was 7 minutes, and the mechanical properties after 24 hours were: dimensional change of +5.7 tt/cm, deformation under pressure of 0.08%, and compressive strength of 5 4 9 4 Kg. /c
ni. Static creep characteristics (369Kv/c after 7 days of mixing)
The value obtained by applying a load of rn for 4 hours and comparing the amount of deformation at the 1st hour and the 4th hour is O. It was 17%.
また、耐変色性試験／ｒｉＪＩｓ Ｔ６１０８の規定に
準じて実施し、０．１係硫化ソーダ溶液中に７２時間浸
漬放置後の色を調べたもので、試験後の色ぱＪＩＳ
Ｚ ８７２１標準色標により彩度１、色相５ＹＫおい
て明度６／を示した。In addition, the color fastness test was carried out in accordance with the provisions of riJIs T6108, and the color was examined after being immersed in a 0.1% sodium sulfide solution for 72 hours.
According to the Z 8721 standard color standard, the color saturation was 1, the hue was 5YK, and the lightness was 6/.
実施例 ２
銀４８重量係、錫３０重量係，銅１８重量係、インジウ
ム４重量係の合金を溶融噴霧により粉末化後、これを熱
処理し、得られた合金紛末１に対して水銀を０．８２の
重量比で練和した。Example 2 An alloy containing 48 parts by weight of silver, 30 parts by weight of tin, 18 parts by weight of copper, and 4 parts by weight of indium was pulverized by melting and spraying, and then heat-treated to reduce the amount of mercury to 1 part of the obtained alloy powder. The mixture was kneaded at a weight ratio of .82.
硬化時間は６分、２４時間後の機４＃Ｉ特性は、寸法変
化が＋４μ／ｃｍ，加圧変形が０．０６％、圧縮強度が
ｓ ６ ４ ０ Ｋｙ／ｃｆ！、静的クリープ特性（実
施例１と同要領で測定）が０．１０’％で、耐変色性試
験（実施例１と同要領で実施）後の明度は６／であった
。The curing time was 6 minutes, and the machine 4#I characteristics after 24 hours were a dimensional change of +4 μ/cm, a pressure deformation of 0.06%, and a compressive strength of s640 Ky/cf! The static creep property (measured in the same manner as in Example 1) was 0.10'%, and the brightness after the color fastness test (measured in the same manner as in Example 1) was 6/.
実施例 ３
銀２９重量係、錫３８重量チ、銅２９重量係、インジウ
ム６重量係の合金を溶融噴霧し、得られた粉末を熱処理
した合金粉末１に対し水銀を０．８２の重量比で練和し
た。Example 3 An alloy containing 29 parts by weight of silver, 38 parts by weight of tin, 29 parts by weight of copper, and 6 parts by weight of indium was melted and sprayed, and the resulting powder was heat-treated.Mercury was added at a weight ratio of 0.82 to alloy powder 1. I practiced.
硬化時間は８分，２４時間後の機械的特性は、寸法変化
が＋３μ／ｃｍ、加圧変形が０．１３係、圧縮強度が５
５ ２ ０Ｋ７／ｔ−静的クリープ特性（実施例１と
同要領で測定）が０．１１係で、耐変色性（実施例１と
同要領で測定）が７／であった。The curing time was 8 minutes, and the mechanical properties after 24 hours were as follows: dimensional change was +3 μ/cm, pressure deformation was 0.13, and compressive strength was 5.
520K7/t - Static creep property (measured in the same manner as in Example 1) was 0.11, and color fastness (measured in the same manner as in Example 1) was 7/.
実施例 ４
銀６０重量係、錫２３重量係、銅１２重量チ、インジウ
ム重量係の合金を溶融噴霧により粉末化した後に熱処理
した。Example 4 An alloy containing 60 parts by weight of silver, 23 parts by weight of tin, 12 parts by weight of copper, and 12 parts by weight of indium was pulverized by melt spraying and then heat-treated.
この合金粉末１に対し水銀を０．８７の重量化で練和し
た。This alloy powder 1 was kneaded with mercury at a weight of 0.87.
硬化時間ＩＩｉ８分、２４時間後の機械的特性は、寸法
変化が−１μ／ｍ１加圧変形が０．１１％、圧縮強度が
６３０３Ｋ９／ｃ７７ｆ，静的クリープ特性（実施例１
と同要領で測定）が０．１０％で、耐変色性（実施例１
と同要領で測定）が７／であった。Curing time IIi was 8 minutes, and the mechanical properties after 24 hours were as follows: dimensional change was -1μ/m1, pressure deformation was 0.11%, compressive strength was 6303K9/c77f, and static creep properties (Example 1
(measured in the same manner as in Example 1) was 0.10%, and the color fastness (Example 1) was 0.10%.
) was 7/.
実施例 ５
銀２８．５重量係、錫２８．５重量係、銅３８重量チ、
インジウム５重量係の合金を溶融噴霧により粉末化した
後に熱処理した。Example 5 Silver 28.5 weight, tin 28.5 weight, copper 38 weight,
An alloy containing 5 parts by weight of indium was pulverized by melt spraying and then heat treated.
この合金粉末１に対し水銀１の重量比で練和したものは
、硬化時間は８分、２４時間後の機械的特性は、寸法変
化が一５．８μ／ｃｍ，加圧変形が０．２３係、圧縮強
度が５５５３〜／Ｃａ静的クリープ特性（実施例１と同
要領で測定）が０． １ ８ ％で、耐変色性（実施例
１と同要領で測定）は６／であった。When kneaded at a weight ratio of 1 part mercury to 1 part alloy powder, the hardening time was 8 minutes, and the mechanical properties after 24 hours were as follows: dimensional change was 5.8 μ/cm, and pressure deformation was 0.23. The compressive strength is 5553~/Ca, and the static creep property (measured in the same manner as in Example 1) is 0. 18%, and the color fastness (measured in the same manner as in Example 1) was 6/.
実施例 ６
銀５５重量係、錫２７重量係、銅１３重量係，インジウ
ム５重量係の合金を溶融噴霧により粉末化した後に熱処
理した。Example 6 An alloy containing 55 parts by weight of silver, 27 parts by weight of tin, 13 parts by weight of copper, and 5 parts by weight of indium was pulverized by melt spraying and then heat-treated.
得られた合金粉末ｌに対し水銀を０．９の重量比で練和
したものは、硬化時間は８分、２４時間後の機械的特性
は、寸法変化が−１．８μ／ｍ、加圧変形が０．２３係
、圧縮強度が５ ０ ９ ６ Ｋｇ／ｃ４、静的クリニ
プ特性（実施例１と同要領で測定）が０．２３％で、耐
変色性（実施例１と同要領で測定）は７／であった。The obtained alloy powder was kneaded with mercury at a weight ratio of 0.9, and the curing time was 8 minutes, and the mechanical properties after 24 hours were that the dimensional change was -1.8μ/m, and the pressure was The deformation was 0.23%, the compressive strength was 5096 Kg/c4, the static crimp property (measured in the same manner as in Example 1) was 0.23%, and the color fastness (measured in the same manner as in Example 1) was 0.23%. measurement) was 7/.
以十の実施例は、合金を溶融噴霧によシ粉末化している
が、切削により粉末化してもよい。In the tenth embodiment, the alloy is pulverized by melting and spraying, but it may also be pulverized by cutting.
この場合は、一般的に機械的諸特性が若干低下するが耐
変色性は変らない。In this case, mechanical properties generally deteriorate slightly, but color fastness remains unchanged.
また、合金の酸化を防いだり溶融噴霧な容易にしたり、
或いはアマルガムの←）方向寸法変化を打消したりする
ために、例えば１チ以下のような少量の亜鉛を添加して
も差支えない。It also prevents the oxidation of the alloy and makes it easier to melt and spray.
Alternatively, a small amount of zinc, such as 1 inch or less, may be added to cancel the dimensional change in the amalgam direction.
しかし、亜鉛を多量に添加することは，（力方向の寸法
変化が大きくなるので望ましくない。However, adding a large amount of zinc is undesirable because it increases the dimensional change in the force direction.
参考のために、従来のアマルガム用合金粉末の比較例を
次に示す。For reference, a comparative example of conventional alloy powder for amalgam is shown below.
諸測定の方法は実施例１に準ずる。The methods of various measurements were in accordance with Example 1.
比較例 １
米国歯利医師会規格に適合する銀６９係、錫２８係、銅
３係よりなる合金を切削して得た削片状合金粉末と水銀
とを練和した場合は、２４時間後の機械的特性は、寸法
変化が−（５〜９）μ／帆加圧変形が２〜３係、圧縮強
度が３６００〜３ ９ ０ ０ Ｋ９／ｃ４、静的クリ
ープ特性が１〜４係で，耐変色性が５／であつ九
比較例 ２
比較例１と同配合の合金を溶融噴霧により粉末化して得
られた球状合金粉末に水銀を練和した場合は，２４時間
後の機械的特性は、寸法変化が−（３〜８）μ／Ｃｒｒ
ｌ、加圧変形が０．５ 〜０．８％、圧縮強度が３ ９
０ ０〜４ ３ ０ ０Ｋｇ／ｃｒｉ，静的クリープ
特性が０．５〜０．８係で、耐変色特性が５／であった
。Comparative Example 1 When mercury is kneaded with a flaky alloy powder obtained by cutting an alloy consisting of 69 parts silver, 28 parts tin, and 3 parts copper, which complies with the American Dental Association standards, after 24 hours The mechanical properties of dimensional change are -(5~9)μ/sail pressure deformation is 2~3 factors, compressive strength is 3600~3900 K9/c4, and static creep property is 1~4 factors. , Discoloration fastness is 5/9 Comparative Example 2 When mercury is kneaded into the spherical alloy powder obtained by pulverizing the alloy of the same composition as Comparative Example 1 by melt spraying, the mechanical properties after 24 hours are The dimensional change is -(3~8)μ/Crr
l, pressure deformation is 0.5 to 0.8%, compressive strength is 39
00 to 4300 Kg/cri, static creep properties were 0.5 to 0.8, and color fastness was 5/5.
比較例 ３
前記米国特許第３，３０ ５，３ ５ ６号の実施品で
あることの表示を有する市販の合金粉末を水銀と練和し
た場合は，２４時間後の機械的諸特性は、寸法変化が＋
（４〜８）μ／ｃｒｒｌ、加圧変形が０．４９〜０．２
２係、圧縮強度が４２００〜５０００Ｋ９／ｃｉ静的ク
リープ特性が０．２〜０．３係で、耐変色性が４／であ
った。Comparative Example 3 When a commercially available alloy powder labeled as an embodiment of U.S. Pat. No. 3,305,356 was kneaded with mercury, the mechanical properties after 24 hours were Change is +
(4-8)μ/crrl, pressure deformation is 0.49-0.2
Compressive strength was 4,200 to 5,000 K9/ci, static creep property was 0.2 to 0.3, and color fastness was 4/.
以上の比較例と対照して明らかなように、この発明によ
るアマルガム用合金粉末は、機械的諸特性並びに耐変色
性の双方の面で，従来のアマルガム合金粉末に勝るもの
である。As is clear from comparison with the above comparative examples, the amalgam alloy powder according to the present invention is superior to conventional amalgam alloy powders in terms of both mechanical properties and discoloration resistance.
Claims (1)
なり、土記各成分の含有量は、インジウム０．５〜２０
重量係、銀２０〜７０重量宏錫２０〜５０重量係、銅９
．２重量係を超え５０重量係までの値であることを特徴
とする歯科アマルガム用合金粉末。1 Made of alloy powder containing silver, tin, copper and indium, the content of each component is indium 0.5-20
Weight section, silver 20-70 weight Hong tin 20-50 weight section, copper 9
．． An alloy powder for dental amalgam, characterized by having a value exceeding 2 weight coefficient and up to 50 weight coefficient.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP50153664A JPS5910982B2 (en) | 1975-12-22 | 1975-12-22 | Deer amalgam |
| FR7639212A FR2336490A1 (en) | 1975-12-22 | 1976-12-22 | Copper-silver-tin-indium dental alloy - for mixing with mercury giving a nontarnishable strong dental amalgam |
| DE2658120A DE2658120C2 (en) | 1975-12-22 | 1976-12-22 | Dental alloy |
| US05/890,307 US4164419A (en) | 1975-12-22 | 1978-03-27 | Powdered alloy for dental amalgam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP50153664A JPS5910982B2 (en) | 1975-12-22 | 1975-12-22 | Deer amalgam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5276218A JPS5276218A (en) | 1977-06-27 |
| JPS5910982B2 true JPS5910982B2 (en) | 1984-03-13 |
Family
ID=15567471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP50153664A Expired JPS5910982B2 (en) | 1975-12-22 | 1975-12-22 | Deer amalgam |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS5910982B2 (en) |
| DE (1) | DE2658120C2 (en) |
| FR (1) | FR2336490A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62234671A (en) * | 1986-04-02 | 1987-10-14 | Toyota Motor Corp | Method and device for removing spatter of welding torch |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2937959C2 (en) * | 1979-09-20 | 1985-05-15 | Benckiser-Knapsack Gmbh, 6802 Ladenburg | Use of salt hydrates as a heat storage medium for charging latent heat storage |
| FR2772265B1 (en) * | 1997-12-12 | 2001-09-07 | Schiller Henri | REDUCED MERCURY RATE DENTAL AMALGAM AND PROCESS FOR PRODUCING SUCH AN AMALGAM |
-
1975
- 1975-12-22 JP JP50153664A patent/JPS5910982B2/en not_active Expired
-
1976
- 1976-12-22 DE DE2658120A patent/DE2658120C2/en not_active Expired
- 1976-12-22 FR FR7639212A patent/FR2336490A1/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62234671A (en) * | 1986-04-02 | 1987-10-14 | Toyota Motor Corp | Method and device for removing spatter of welding torch |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2336490A1 (en) | 1977-07-22 |
| DE2658120A1 (en) | 1977-06-30 |
| DE2658120C2 (en) | 1986-09-11 |
| JPS5276218A (en) | 1977-06-27 |
| FR2336490B3 (en) | 1979-08-31 |
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