WO2012173336A2 - Alliage dentaire métallique à couler et prothèse dentaire - Google Patents

Alliage dentaire métallique à couler et prothèse dentaire Download PDF

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Publication number
WO2012173336A2
WO2012173336A2 PCT/KR2012/002774 KR2012002774W WO2012173336A2 WO 2012173336 A2 WO2012173336 A2 WO 2012173336A2 KR 2012002774 W KR2012002774 W KR 2012002774W WO 2012173336 A2 WO2012173336 A2 WO 2012173336A2
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metal alloy
weight
gold
group
element selected
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English (en)
Korean (ko)
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WO2012173336A3 (fr
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박형석
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Priority to CN201280040104.4A priority Critical patent/CN103857374A/zh
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    • 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
    • A61K6/842—Rare earth metals
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K6/00—Preparations for dentistry
    • 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
    • A61K6/844—Noble metals

Definitions

  • the present invention relates to metal alloys, and more particularly to metal alloys used for casting in dentistry and dental prostheses using the same.
  • the metal casting for dental casting is used in the oral cavity where various environmental changes such as temperature, acidity, and pressure occur in the human body, it requires not only excellent mechanical properties but also chemical stability and aesthetics.
  • dental cast metal alloys must be free of corrosion, discoloration, etc., because they are used in the oral cavity, and should not be harmful to humans.
  • gold-based alloys having a high gold content are widely used for dental casting.
  • gold-based alloys are high in price, alternative alloys with similar properties and superior economics have been developed.
  • gold-palladium alloys, silver-palladium alloys, nickel-chromium alloys and the like have been studied.
  • nickel-chromium alloys are advantageous in terms of cost but have the problem of causing allergic reactions or the accumulation of heavy metals in the body.
  • Other alloys have the problem of causing discoloration, causing cytotoxicity, or low castability. Accordingly, the present invention has been made to solve the above problems.
  • the foregoing problem has been presented by way of example, and the scope of the present invention is not limited by this problem.
  • Dental casting metal alloy according to an aspect of the present invention, 20 to 60% by weight of silver (Ag); 10 to 40 weight percent palladium (Pd); 15 to 35 weight percent indium (In); At least one element selected from the first group consisting of gallium (Ga), copper (Cu), silicon (Si), and germanium (Ge); And not more than 0 and not more than 3 wt% in total, zinc (Zn), tin (Sn), iridium (Ir), rhenium (Re), rhodium (Rh), ruthenium (Ru), lanthanum (La), osmium ( Os), and at least one element selected from the second group consisting of bismuth (Bi).
  • the dental casting metal alloy may further include more than 0 and 40 wt% or less of gold (Au).
  • the metal alloy for dental casting is more than 0 and 8% by weight or less in total, and includes boron (B), cobalt (Co), chromium (Cr), iron (Fe), niobium (Nb), nickel (Ni), and tantalum ( Selected from the third group consisting of Ta, titanium (Ti), manganese (Mn), vanadium (V), magnesium (Mg), calcium (Ca), aluminum (Al), molybdenum (Mo), and zirconium (Zr) It may further include at least one element.
  • At least one element selected from the first group may include copper and / or gallium.
  • At least one element selected from the first group may include germanium and / or silicon.
  • Dental casting metal alloy is 10 to 40% by weight of palladium (Pd); 15 to 35 weight percent indium (In); More than 0 and 40% by weight of gold (Au); At least one element selected from the first group consisting of gallium (Ga), copper (Cu), silicon (Si), and germanium (Ge); And not more than 0 and not more than 3 wt% in total, zinc (Zn), tin (Sn), iridium (Ir), rhenium (Re), rhodium (Rh), ruthenium (Ru), lanthanum (La), osmium ( Os), and at least one element selected from the second group consisting of bismuth (Bi); 8% by weight or more in total, selenium (Se), carbon (C), antimony (Sb), boron (B), cobalt (Co), chromium (Cr), iron (Fe), niobium (Nb), Nickel (Ni), tantalum (Ta), titanium (
  • Dental prosthesis according to another aspect of the present invention is manufactured using the above-described dental casting metal alloy.
  • Dental casting metal alloy according to an embodiment of the present invention can increase the economic efficiency by increasing the content of palladium, silver and indium.
  • by optimizing the alloy composition in the metal alloy while suppressing redness while maintaining the gold expression it is possible to ensure excellent chemical stability and high body suitability.
  • FIG. 1 is a photograph showing a dental prosthesis according to a comparative example.
  • FIG. 2 is a photograph showing a dental prosthesis according to an experimental example of the present invention.
  • the weight percent (wt%) is expressed as a percentage of the weight of the component in the weight of the total alloy. It can be understood that the range for the weight percent does not include the boundary value when it is above or below, but includes the boundary value when it is simply designated as a range or above or below.
  • the metal alloy may include unavoidable impurities that originate from impurities of each element itself or are inadvertently contained in the alloying step. That is, unavoidable impurities may refer to conventional impurities that can be introduced unintentionally in the manufacture of metal alloys or prostheses.
  • Dental alloy metal alloy according to an embodiment of the present invention can be prepared by adding additional elements to the main elements silver (Ag), palladium (Pd) and indium (In).
  • gold (Au) is omitted or the content of gold in the metal alloy is greatly reduced, silver and indium are mainly added to compensate for gold expression, and palladium may be added to complement physical properties.
  • Silver, palladium and indium may be contained in the metal alloy in total at least about 45-50% by weight. Accordingly, such metal alloys may be referred to as silver-palladium-indium based (Ag-Pd-In base) alloys.
  • Palladium can be provided as a major element and replaces much of gold and platinum and is known to be harmless to the human body.
  • the content of palladium can be adjusted primarily according to the contents of silver and indium, and can additionally be adjusted according to the content of other additive elements. For example, when the content of silver decreases, the content of palladium may increase. However, since the increase in the content of palladium may negatively affect the gold expression, it can be appropriately adjusted according to the degree of gold expression.
  • palladium can be added in the metal alloy in the range of 10 to 40% by weight.
  • the content of silver (Ag) may be adjusted in consideration of problems such as fracture, hydrogen brittleness, castability degradation, color, and the like, and may be adjusted according to the content of palladium as described above.
  • the content of indium (In) may be adjusted in consideration of the content of silver for color control of the metal alloy.
  • silver may be added in the metal alloy in the range of 20 to 60% by weight, and indium may be added in the range of 15 to 35% by weight.
  • silver may form the balance of the alloy when other alloying elements are significantly changed.
  • Silver and indium react with sulfur in the metal alloy or in the air to form sulfides that become yellow, which can make the metal alloy gold.
  • these sulfides or sulfur may oxidize on the alloy surface, resulting in redness (or yellowing).
  • Increasing the content of silver and indium is advantageous in terms of the gold appearance of the alloy, but it is more likely to cause redness. Accordingly, it is not easy to achieve gold expression and inhibition of redness at the same time only by appropriately adjusting the contents of silver and indium.
  • Elements of the first group may be added into the metal alloy to control other mechanical / chemical properties of the metal alloy while suppressing this redness.
  • the element of the first group may include at least one element selected from gallium (Ga), copper (Cu), silicon (Si), and germanium (Ge).
  • the element of the first group can form a compound with sulfur to inhibit oxidation of sulfur.
  • copper and gallium may combine with sulfur to form CuGaS 2 to inhibit oxidation of sulfur.
  • the elements of the first group may be added in a range of about 0.5% to about 10% by weight in total.
  • copper can reinforce the decrease in strength due to silver, it can drastically reduce the elongation of the alloy and thus have limitations in addition. For this reason, when the copper content is high, the content of silver may be increased to increase the elongation of the alloy. Furthermore, copper, together with silver and indium, can combine with sulfur to form sulfides, making the metal alloy gold. Accordingly, copper, like indium, may cause redness when an oxidation problem occurs.
  • Gallium may have a low melting point to compensate for the increase in melting point due to palladium, but excessive gallium may cause a flow down during casting, thereby deteriorating the flowability of the molten metal.
  • these castability problems can be alleviated by forming compounds with each other.
  • reddening can be greatly suppressed by forming CuGaS 2 to suppress oxidation of sulfur.
  • the addition amount of copper and gallium may be selected in consideration of the various aspects mentioned above.
  • the addition amount of copper and gallium can be limited to within 3%, respectively, in consideration of the elongation and color of the alloy, the fluidity of the molten metal, and redness. However, when one of these properties is supplemented with another element, more than 3% may be added.
  • Germanium can combine with sulfur to form sulfides with the main element silver.
  • germanium, silver, and sulfur may be combined to form AgGeS 2 , thereby inhibiting oxidation of sulfur to prevent redness.
  • the germanium content can be controlled in consideration of various variables such as the color of the alloy and yellowing.
  • the germanium content may be maintained at about 0.5% by weight or more to maintain the degree of redness, and less than about 2% by weight in order to maintain the color of the alloy in intermediate or higher gold.
  • Silicon can prevent the penetration of oxygen on the molten or alloy surface, thereby inhibiting oxidation of sulfides.
  • the sulfide content can be controlled in consideration of various variables such as the color of the alloy, yellowing phenomenon.
  • the content of silicon may be maintained at about 0.5% by weight or more so that redness does not occur, and may be maintained at about 1% by weight to maintain the color of the alloy as intermediate or higher gold.
  • germanium and silicon may be further adjusted appropriately considering the brittleness of the alloy.
  • Elements of the second group may be added into the alloy to increase the strength of the metal alloy.
  • the second group is zinc (Zn), tin (Sn), iridium (Ir), rhenium (Re), rhodium (Rh), ruthenium (Ru), lanthanum (La), osmium (Os), and bismuth It may include at least one element selected from (Bi).
  • the elements of the second group may limit other contents, such as elongation, while increasing the strength of the metal alloy, thereby limiting the content thereof, for example, may be added to the metal alloy in a total of 3 wt% or less.
  • Gold may be selectively added for improving corrosion resistance, discoloration resistance and ductility, and the content may be changed in consideration of the content of other elements.
  • the content of gold may be limited to 40% by weight or less, especially 25% by weight or less when the content of alternative elements is high.
  • the content of gold may be reduced or omitted within 5% by weight in order to further increase the economic efficiency.
  • a portion of the gold may be replaced by platinum (Pt).
  • Pt platinum
  • the total content of gold and platinum may be 35% by weight or less.
  • platinum is expensive and the melting temperature is high and may be limited to 20% by weight or less in the casting alloy.
  • the elements of the third group may be optionally added in consideration of the yield strength, hardness, elongation, etc. of the metal alloy.
  • the third group is selenium (Se), carbon (C), antimony (Sb), boron (B), cobalt (Co), chromium (Cr), iron (Fe), niobium (Nb), nickel ( Selected from Ni), tantalum (Ta), titanium (Ti), manganese (Mn), vanadium (V), magnesium (Mg), calcium (Ca), aluminum (Al), molybdenum (Mo), and zirconium (Zr) It may contain at least one element.
  • the third group of elements can be added to the metal alloy in total up to 8% by weight.
  • the above-described dental casting metal alloy according to the embodiments of the present invention lowers the expensive gold and platinum contents and instead increases the silver, palladium and indium contents to increase the economic efficiency, and also provides excellent mechanical properties, chemical stability and High body suitability can be ensured.
  • Dental prosthesis according to an embodiment of the present invention can be manufactured using the above-described dental casting metal alloy.
  • a dental prosthesis can be made by casting the aforementioned metal alloy into the crown shape of a tooth or by molding a casting.
  • Such silver-palladium-indium-based dental prostheses have a color, mechanical properties, and chemical stability comparable to conventional gold-based dental prostheses, and are expected to be able to replace conventional gold-based dental prostheses.
  • Table 1 shows the composition and physical properties of the silver-palladium-indium alloy according to Experimental Example I.
  • Experimental Example I when the content of indium in the metal alloy was small, the remaining composition was filled with gold.
  • the specimen of Table 1 is made by melting the alloy components and injecting it into the graphite mold to form a cast, and then using a rolling mill to increase the cast and then stamp and cut it.
  • the indium content may be at least 6% by weight or more, in particular, to make the yellow color deeper, to 12% or more by weight, and to about 15% or more by weight to maintain a stable yellow color. I can keep it.
  • Table 2 shows the alloy composition (wt%) and physical properties according to Experimental Example II of the present invention.
  • ' ⁇ ' indicates a case where gold is expressed or reddened
  • 'X' indicates a case where no gold is expressed or reddened
  • the degree is' from 'to' Higher 'toward the top.
  • Table 3 shows the alloy composition (wt%) and physical properties according to Experimental Example III of the present invention.
  • Table 4 shows the alloy composition (wt%) and physical properties according to Experimental Example IV of the present invention.
  • Table 5 shows the alloy composition (wt%) and physical properties according to Experimental Example V of the present invention.
  • Table 6 shows the alloy composition (wt%) and physical properties according to Experimental Example VI of the present invention.
  • Table 7 shows the alloy composition (wt%) and physical properties according to Experimental Example VII of the present invention.
  • Example VII-4 redness does not occur in Experimental Examples VII-3 and VII-4 having a germanium content of about 1% by weight or more, and in Example VII-2 in which the Germanium content is about 0.5% by weight It can be seen that the degree can be suppressed to the lower level. On the other hand, it can be seen that as the content of germanium increases, the degree of gold expression of the alloy falls. Accordingly, the germanium content in the metal alloy may be maintained at about 0.5% by weight or more and less than 2% by weight in order to maintain the gold expression of the alloy at the intermediate level or more and to suppress the level of redness at the lower level.
  • Table 8 shows the alloy composition (wt%) and physical properties according to Experimental Example VIII of the present invention.
  • the content of silicon in the metal alloy may be maintained at about 0.5% by weight or more and less than 1% by weight in order to maintain the gold expression of the alloy at the intermediate level or more and to suppress the level of redness at the lower level.
  • Table 9 shows the alloy composition (wt%) and physical properties according to Experimental Example IX of the present invention.
  • Table 10 shows the alloy composition (wt%) and physical properties according to Experimental Example X of the present invention.
  • FIGS. 1 and 2 are photographs showing a dental prosthesis according to a comparative example
  • Figure 2 is a photograph showing a dental prosthesis according to the experimental example of the present invention.
  • the comparative example shows the dental prosthesis manufactured using the metal alloy to which the element of the 1st group was not added
  • the experimental example shows the dental prosthesis manufactured using the metal alloy to which the element of the 1st group was added.
  • the left dental groove is not hydrochloric acid treated
  • the right dental groove is hydrochloric acid treated.

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  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Plastic & Reconstructive Surgery (AREA)
  • Dental Preparations (AREA)

Abstract

Alliage dentaire métallique à couler et prothèse dentaire. L'alliage dentaire métallique à couler selon un aspect de la présente invention comprend : 20 à 60 % en poids d'argent (Ag) ; 10 à 40 % en poids de palladium (Pd) ; 15 à 35 % en poids d'indium (In) ; et au moins un élément représentant 0 à 10 % en poids au total choisi dans un premier groupe constitué par le gallium (Ga), le cuivre (Cu), le silicium (Si), et le germanium (Ge) ; et au moins un élément représentant 0 à 3 % en poids au total choisi dans un second groupe constitué par le zinc (Zn), l'étain (Sn), l'iridium (Ir), le rhénium (Re), le rhodium (Rh), le ruthénium (Ru), le lanthane (La), l'osmium (Os), et le bismuth (Bi).
PCT/KR2012/002774 2011-06-15 2012-04-12 Alliage dentaire métallique à couler et prothèse dentaire Ceased WO2012173336A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201280040104.4A CN103857374A (zh) 2011-06-15 2012-04-12 齿科铸造合金及齿科修复体

Applications Claiming Priority (2)

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KR10-2011-0057864 2011-06-15
KR1020110057864A KR101434583B1 (ko) 2011-06-15 2011-06-15 치과 주조용 금속 합금 및 치과 보철물

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WO2012173336A2 true WO2012173336A2 (fr) 2012-12-20
WO2012173336A3 WO2012173336A3 (fr) 2013-03-07

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Cited By (1)

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KR102025798B1 (ko) * 2019-06-25 2019-09-26 주식회사 유승 부식저항성을 개선한 생체재료용 고밀도 소결 코발트-크롬-몰리브덴 비귀금속 합금의 제조방법

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KR101477390B1 (ko) * 2013-05-21 2014-12-29 장경삼 치과용 보철합금 제조방법
KR101480611B1 (ko) * 2013-05-21 2015-01-09 장경삼 치과용 보철합금
CN104962773A (zh) * 2015-06-02 2015-10-07 张亚南 一种用于齿科修复的铸造合金及其应用
CN104878247B (zh) * 2015-06-02 2017-02-22 张亚南 一种用于齿科修复的镍铬烤瓷合金材料及其应用
KR101967289B1 (ko) * 2017-06-30 2019-04-09 조선대학교산학협력단 치과 주조용 팔라듐 합금
KR101897200B1 (ko) 2017-11-09 2018-09-12 주식회사 유승 부식저항성과 절삭가공성을 개선한 생체재료용 고밀도 소결 니켈-크롬-몰리브덴 합금의 제조방법
KR20220118148A (ko) 2021-02-18 2022-08-25 주식회사 테크빌 도재소부와 의치 제작이 가능한 코발트계 치과합금 및 그 제조방법

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KR102025798B1 (ko) * 2019-06-25 2019-09-26 주식회사 유승 부식저항성을 개선한 생체재료용 고밀도 소결 코발트-크롬-몰리브덴 비귀금속 합금의 제조방법

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KR20120138406A (ko) 2012-12-26
KR101434583B1 (ko) 2014-08-26
CN103857374A (zh) 2014-06-11
WO2012173336A3 (fr) 2013-03-07

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