CN103857374A

CN103857374A - Dental casting metal alloy and dental prosthesis

Info

Publication number: CN103857374A
Application number: CN201280040104.4A
Authority: CN
Inventors: 朴炯奭
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-06-15
Filing date: 2012-04-12
Publication date: 2014-06-11
Also published as: WO2012173336A3; KR101434583B1; KR20120138406A; WO2012173336A2

Abstract

Provided are a dental casting metal alloy and a dental prosthesis. The dental casting metal alloy according to one aspect of the present invention comprises: 20-60 wt % of silver (Ag); 10-40 wt % of palladium (Pd); 15-35 wt % of indium (In); and at least one element of 0-10 wt % in total selected from a first group consisting of gallium (Ga), copper (Cu), silicon (Si), and germanium (Ge); and at least one element of 0-3 wt % in total selected from a second group consisting of zinc (Zn), tin (Sn), iridium (Ir), rhenium (Re), rhodium (Rh), ruthenium (Ru), lanthanum (La), osmium (Os), and bismuth (Bi).

Description

Dental casting alloy and dental restoration

Technical field

The invention relates to metal alloy, particularly gear division casting alloy and use the dental restoration of this alloy.

Background technology

Dental casting alloy, in the changeable oral cavity such as temperature, acidity, pressure, so not only requirement will have excellent mechanical performance, also will have chemical stability and aesthetic property.Such as, dental casting alloy is used in mouth just without corrosion and variable color, harmless.

Based on this, the billon that gold content is high is widely used as dental casting alloy.But billon is expensive, thus develop a kind of various performance with billon approach price again cheap instead of alloy be exactly an inevitable trend.Such as everybody is doing rhotanium, silver palladium alloy, nichrome etc.

Detailed description of the invention

Technical task

But while developing this instead of alloy, obtaining suitable chemical property and aesthetic property is not an easy thing.Such as, nichrome low price, but have the shortcoming such as allergy, heavy metal of body deposition.Other alloy or variable color, or have cytotoxicity, or casting character is poor.The present invention designs for solving as above problem.But above problem is just in order to illustrate, and scope of the present invention is not only confined to above several aspect.

Solve the method for this problem

This alloy is on the one hand in dental casting alloy, to add 20～60%(percentage by weight) Ag, 10～40% Pd, 15～35% In, add up to be greater than 0 lower than 10% groups of elements 1(Ga, Cu, Si, Ge) at least one, add up to be greater than 0 lower than 3% groups of elements 2(Zn, Sn, Ir, Re, Rh, Ru, La, Os, Bi) at least one.

In above-mentioned dental casting alloy, also can contain percentage by weight and be greater than 0 and be no more than 40% gold.

In above-mentioned dental casting alloy, can contain percentage by weight be greater than 0 and be no more than 8% groups of elements 3(B, Co, Cr, Fe, Nb, Ni, Ta, Ti, Mn, V, Mg, Ca, Al, Mo, Zr) at least one.

In above-mentioned dental casting alloy, in groups of elements 1, requiring at least to select a kind of metal is likely one or both in Cu and Ga.

In above-mentioned dental casting alloy, in groups of elements 1, requiring at least to select a kind of metal is likely one or both in Ge and Si.

The dental casting alloy different from this alloy can contain 10～40%(percentage by weight) Pd, 15～35% In, be greater than 0 and be no more than 40% Au, be greater than 0 and be no more than 10% groups of elements 1(Ga, Cu, Si, Ge, ) at least one, add up to and be greater than 0 and be no more than 3% groups of elements 2(Zn, Sn, Ir, Re, Rh, Ru, La, Os, Bi) at least one in, add up to and be greater than 0 and be no more than 8% groups of elements 3(Se, C, Sb, B, Co, Cr, Fe, Nb, Ni, Ta, Ti, Mn, V, Mg, Ca, Al, Mo, Zr) at least one in, remaining is Ag and inevitable impurity.

According to the present invention and the dental restoration of other side use above-mentioned dental casting alloy to be made.

The effect of invention

Dental casting alloy according to example of the present invention can reduce costs by the content that improves Pd, Ag, In.Meanwhile, make the composition proportion of alloy reach most suitable ratio, not only can realize golden yellow but also can prevent rubescently, guarantee the human compatibility of excellent chemical stability and height.

Brief description of the drawings

Fig. 1 has compared different dental restorations by photo example;

Fig. 2 is the photo according to the dental restoration of example of the present invention.

Detailed description of the invention

For the most perfect form of enforcement of the present invention

As follows, with elaborating according to the example of expecting of the present invention.But the present invention is not only confined to following example, also comprise other multiple different form.Only this example is complete has shown the present invention, and the people who provides it just possess basic general knowledge in order to allow comprehensively understands scope of invention.

In example of the present invention, percentage by weight (wt%) refers to the percentage ratio of the shared weight of Related Component in the weight in Integral alloy.The scope of percentage by weight, does not comprise its boundary value in the situation of overweight percentage ratio or deficiency.Simple specified scope or appointment also can be understood as and comprise boundary value above or in following situation.

In example of the present invention, likely contain unpredictalbe impurity in the inevitable impurity that the various elements self in alloy contain and the process that is made into alloy.Produce alloy or make and do not wish that the impurity of introducing is referred to as inevitable impurity when dummy.

The main component of the dental casting alloy based on example of the present invention is Ag, Pd, In, is made after adding other auxiliary elements.In alloy containing gold or significantly reduced the content of gold, so in order to realize golden yellow, mainly add Ag and In; In order to improve physical property, mainly add Pd.Wherein, Ag, Pd, In add up to weight account for 45～50% therefore this alloy also can be described as Ag-Pd-In base alloy.

Pd, as a kind of main component, replaced Au and the Pt of significant proportion, and as you know, Pd is harmless.Pd adds the content that how much first will see Ag and In, and then adjusts according to the content of other composition adding.Such as, if the content of Ag reduce, the content of Pd just may increase, but Pd more than color relation not yellow, so will be according to the content of the suitable adjustment Pd of target Huang degree.Such as, the content of Pd can be in 10～40% scope.

The problems such as the content of Ag is low according to the fragility, casting character of fracture, H, color are adjusted.As mentioned above, may also to adjust according to the content of Pd.Adding In is the color in order to regulate alloy, and content will be determined according to the content of Ag.Such as, if the content of Ag will, 15～35% for another example, be mainly to adjust other composition at 20～60%, In, inadequate composition just can carry out polishing with Ag.

Ag and In form sulfide and make alloy be golden yellow with sulfur generation oxidation reaction in alloy and air.But this sulfide and sulfur can make alloy surface oxidation and rubescent (claiming flavescence).The color of content alloy that increases In and Ag is favourable, but also the increase of equal extent the probability reddening.Therefore.The content of holding accurately Ag and In realizes that flavous to suppress rubescent phenomenon be not an easy thing simultaneously.

Groups of elements 1 not only can suppress other mechanical performance and the chemical property of rubescent phenomenon but also controlled alloyage, so can add.Such as, can at least contain groups of elements 1(Ga, Cu, Si, Ge) at least one.According to inventor's research, the element in groups of elements 1 and sulfur form sulfide, can suppress the oxidation reaction of sulfur.Such as, Cu is combined with sulfur with Ga and is formed CuGaS ₂suppress the oxidation reaction of sulfur.Therefore, the total content of the composition in groups of elements 1 should be 0.5～10%.

Cu can make up the strength decreased that Ag causes, but can make the percentage elongation of alloy significantly reduce, though can add, limited.Therefore, the content increase of Cu can improve percentage elongation, and the content of corresponding Ag will increase.Further, Cu is combined with sulfur together and is formed sulfide with Ag, In, makes alloy be golden yellow.Corresponding, Cu is also the same with In, and the words that oxidation reaction occurs can be rubescent.

Ga fusing point is low, has offset the high-melting-point of Pd, but can flow downward when the too much words of content are cast, the mobility variation of molten metal.But the present inventor, by studies have shown that, adds Cu and Ga simultaneously, both form compound, have alleviated this problem.Further, Cu and Ga are combined with sulfur and are formed CuGaS ₂, suppress the oxidation of sulfur, greatly suppress the phenomenon reddening.

The content of Cu and Ga will consider that above-mentioned various aspects determine, such as, consider mobility, the rubescent phenomenon of the alloy of the percentage elongation of alloy and color, fusing, the addition of Cu and Ga is all limited in 3%.But a characteristic in this specific character is with other yuan usually in perfect situation, addition likely exceedes 3%.

Ge can be combined with S and be formed sulfide together with host element Ag, such as, Ge is combined with Ag and S and is formed AgGeS ₂, suppressed the oxidation reaction of sulfur, thereby can suppress rubescent phenomenon.The content of Ge can be controlled the multiple variable such as color, yellowing phenomenon of alloy.Such as, in order to reduce rubescent degree, the content of Ge should be more than 0.5%, and in order to make the yellow degree of alloy reach medium above degree, its addition again should be below 2%.

Si can suppress the infiltration of the alloy of fusing and the oxygen of alloy surface, thereby suppresses the oxidation reaction of sulfide.Such as, the content of sulfide should be determined according to the multiple variable of color, the yellowing phenomenon etc. of alloy.Such as, rubescent for fear of alloy, the content of Si should be more than 0.5%; For the color that makes alloy is more than medium, its content again should be in 1%.But the alloy of Ge and Si is too crisp, adjustment content that again should be suitable.

Element in groups of elements 2 can increase the intensity of alloy.Such as, groups of elements 2 at least will have the one in Zn, Sn, Ir, Re, Rh, Ru, La, Os, Bi.But, although the element in groups of elements 2 can increase the intensity of alloy, also can produce adverse influence to other characteristic, such as percentage elongation reduces, thus to limit its content, such as being limited in 3%.

In order to improve corrosion-resistant and discoloration-resisting, raising percentage elongation, add Au, its content depends on the content of other element.But if consider price factor, gold content should be controlled in 40%, in the situation that particularly content of substitute element is high, should be limited in 25%.Further, in order to improve economy, gold content should be controlled at 5% with interior or simply need not.Therefore a part of Au replaces with Pt.In this case, the total content of Au and Pt can be in 35%.Pt is expensive and fusing point is high, and in dental casting alloy, its content should be controlled in 20%.

The flexural strength of the element alloy in groups of elements 3, hardness, percentage elongation etc. are favourable.Such as comprising at least one in Se, C, Sb, B, Co, Cr, Fe, Nb, Ni, Ta, Ti, Mn, V, Mg, Ca, Al, Mo, Zr in groups of elements 3.Such as the total content of the element in groups of elements 3 can be below 8%.

Reduce expensive Au and the content of Pt according to the dental casting alloy of example of the present invention, increased the content of Pd, Ag, In, therefore reduced cost.Excellent mechanical performance, stable chemical property and high biocompatibility have been guaranteed by the interpolation of other element simultaneously.

Use above-mentioned dental casting alloy to be made according to the dental restoration of an example of the present invention, such as dental restoration is made the cast body of corona or molding with above-mentioned alloy, the color of this Ag-Pd-In series dental restoration, mechanical performance, chemical stability are all not second to gold is dental restoration, price is cheap again, is the good material of the long-expected alternative billon dummy of a common people.

As follows, for making easy to understand of the present invention, we provide example, but following instance is that the present invention is not only confined to example below in order to allow everybody understand the present invention.

The present inventor has paid close attention to for replacing the Ag-Pd-In of expensive Au and Pt to be associated gold for a long time always.So first investigated Ag-Pd-In and be associated the physical property of the various proportionings of gold.The Ag-Pd-In that what table 1 embodied is based on example I is associated golden composition and physical property.In the low situation of the content of In in example I alloy, other compositions Au polishing.The test sample of table 1 is each composition of alloy to be dissolved to rear injection graphite crucible form after cast body and use calender that mint-mark after cast body calendering, cutting are formed.

Table 1

As can be seen from Table 1, the more heavy alloyed fusing point of the content of In is lower.This be because the fusing point of In far below Au and Ag.In order to make alloy be yellow, the content of In will be more than 6%, wants to be obvious yellow, and the content of In will be more than 12%, wants the yellow that is stable, and the content of In will be more than 15%.

What table 2 showed is alloy composition (percentage by weight) and the physical property of example II.In example below, " O " represents to present golden yellow and rubescent, and " X " represents not present golden yellow and not rubescent, by degree be divided into " on ", D score.

Table 2

So in example II-1, the content of In is low not aobvious golden yellow, also not rubescent as can be seen from Table 2.But although the example II-2 of the content of In more than 20% shown yellow to II-6, also can be rubescent.Visible, should make alloy keep golden yellow and also will prevent that the design reddening is necessary.

Table 3 has embodied alloy composition (percentage by weight) and the physical property according to test III of the present invention.

Table 3

As can be seen from Table 3, example III-1 is more and more higher to III-5 gold content, and In content is more and more lower.Corresponding, the III-2 in example is more and more lighter to the rubescent phenomenon of III-5, but golden yellow is also more and more lighter.Will raise the cost but increase gold content, even and gold content be increased to 40% rubescent phenomenon and also can not stop completely.

Table 4 has embodied according to the alloy composition of example IV of the present invention (mass percent) and physical property.

Table 4

As can be seen from Table 4, the content of In is high, although example IV-1 presents obvious golden yellow to IV-4, even if add Cu, rubescent phenomenon is also very serious.Although the visible simple Cu that adds can make alloy be golden yellow, cannot suppress rubescent phenomenon.

Table 5 has embodied according to the alloy composition of example V of the present invention (percentage by weight) and physical property.

Table 5

As seen from Table 5, the content of In is high, although example V-1 presents obvious golden yellow to V-4, even if add Sn, rubescent phenomenon is also very serious.Add merely Sn can make alloy be golden yellow although visible, cannot suppress rubescent phenomenon.

Table 6 has embodied according to the alloy composition of example VI of the present invention (percentage by weight) and physical property.

Table 6

As can be seen from Table 6, the content of In is high, although example IV-1 presents obvious golden yellow to IV-4, even if add Ga, rubescent phenomenon is also very serious.Add merely Ga can make alloy be golden yellow although visible, cannot suppress rubescent phenomenon.

Table 7 has embodied according to the alloy composition of example VII of the present invention (percentage by weight) and physical property.

Table 7

As can be seen from Table 7, about more than 1% example VII-3 and the VII-4 of Ge content do not redden; The rubescent degree of example VII-2 of Ge content approximately 0.5% is reduced to down.Along with the increase of Ge content, present flavous degree worse and worse.Therefore, in order to make alloy be medium above golden yellow, to make again rubescent degree reduce to inferior, and the content of the Ge in alloy should be between 0.5～2%.

Table 8 has embodied according to the alloy composition of example VIII of the present invention (percentage by weight) and physical property.

Table 8

As can be seen from Table 8, the about more than 0.5% example VIII-2 of the content of Si does not redden to VIII-4; Along with the increase of Si content, present flavous degree worse and worse.Therefore, in order to make alloy be medium above golden yellow, to make again rubescent degree reduce to inferior, and the content of the Si in alloy should be between 0.5～1%.

Table 9 has embodied according to the alloy composition of example IX of the present invention (percentage by weight) and physical property.

Table 9

As can be seen from Table 9, the example IX-1 that simultaneously adds Cu and Ga presents obvious golden yellow to IX-5, and Cu and Ga content all the example IX-4 more than 2% all do not redden to IX-5, content is all inferior at 0.5～0.1% example IX-2 and the Chengdu that reddens of IX-3.Visible, if should make alloy be medium above golden yellow, again rubescent degree is suppressed for inferior, the total content of the Cu in alloy and Ga will be more than 1.0%

Table 10 has embodied alloy composition (percentage by weight) and the physical property according to instance X of the present invention.

Table 10

Instance X-2 and the X-3 that add as can be seen from Table 10 Cu, Ga, Si, Ge present obvious golden yellow and can suppress rubescent phenomenon simultaneously.

Fig. 1 has compared dental restoration by way of example, and Fig. 2 is the photo according to the dental prosthesis of example of the present invention.Comparison example is the dummy that uses the alloy that does not add groups of elements 1 to make, and example is the dummy that uses the alloy that has added groups of elements 1 to make.Fig. 1 and Fig. 2 left side tooth body are without the acid-treated state of salt, and right side tooth body is hydrochloric acid state after treatment.

As shown in Figure 1, observe rubescent phenomenon without the acid-treated left side of salt tooth body, through the acid-treated right side of salt, tooth body is not found rubescent situation.But in Fig. 2, all there is no change color without the acid-treated left side of salt tooth body and hydrochloric acid right side after treatment tooth body, can confirm not have the phenomenon reddening.

More than explanation is the particular instance for invention, for for example and explanation provide.Therefore the present invention is not only confined to above-mentioned example, and in technological thought of the present invention, the expert of association area can carry out multiple correction and change by comprehensive above-mentioned example.

Claims

1. a dental casting alloy, is characterized in that, contains:

20～60%(percentage by weight) Ag;

10～40%(percentage by weight) Pd;

15～35%(percentage by weight) In;

Content is at 10%(percentage by weight) in groups of elements 1(Ga, Cu, Si, Ge) at least one;

Content be greater than 0 and at 3%(percentage by weight) in groups of elements 2(Zn, Sn, Ir, Re, Rh, Ru, La, Os, Bi) at least one.

2. dental casting alloy as claimed in claim 1, is characterized in that,

Also contain content be greater than 0 and lower than 40%(percentage by weight) Au.

3. dental casting alloy as claimed in claim 1, is characterized in that,

Also contain content be greater than 0 and lower than 8%(percentage by weight) groups of elements 3(Se, C, Sb, B, Co, Cr, Fe, Nb, Ni, Ta, Ti, Mn, V, Mg, Ca, Al, Mo, Zr) at least one.

4. dental casting alloy as claimed in claim 1, is characterized in that,

Contain 0.5～10%(percentage by weight) groups of elements 1 at least one.

5. dental casting alloy as claimed in claim 1, is characterized in that,

At least one element of selecting from above-mentioned groups of elements 1 comprises Cu and Ga.

6. dental casting alloy as claimed in claim 5, is characterized in that,

The content of above-mentioned Cu is at 0.5～3%(percentage by weight).

7. dental casting alloy as claimed in claim 5, is characterized in that,

The content of above-mentioned Ga is at 0.5～3%(percentage by weight).

8. dental casting alloy as claimed in claim 1, is characterized in that,

At least one element of selecting from above-mentioned groups of elements 1 comprises Ge.

9. dental casting alloy as claimed in claim 8, is characterized in that,

The content of above-mentioned Ge higher than 0.5% lower than 2%(percentage by weight).

10. dental casting alloy as claimed in claim 1, is characterized in that,

At least one element of selecting from above-mentioned groups of elements 1 comprises Si.

11. dental casting alloys as claimed in claim 10, is characterized in that,

The content of above-mentioned Si is greater than 0.5%(percentage by weight) lower than 1%(percentage by weight).

12. 1 kinds of dental casting alloys, is characterized in that, by

10～40%(percentage by weight) Pd;

15～35%(percentage by weight) In;

Be greater than 0 and lower than 40%(percentage by weight) Au;

Groups of elements 1(Ga, Cu, Si, Ge) at least select a kind ofly, content adds up to and is greater than 0 and lower than 10%;

Groups of elements 2(Zn, Sn, Ir, Re, Rh, Ru, La, Os, Bi) at least comprise one, add up to content be greater than 0 and lower than 3%(percentage by weight);

Groups of elements 3(Se, C, Sb, B, Co, Cr, Fe, Nb, Ni, Ta, Ti, Mn, V, Mg, Ca, Al, Mo, Zr) at least comprise one, add up to content be greater than 0 and lower than 8%(percentage by weight);

Other composition is Ag and inevitable impurity composition.

13. dental casting alloys as claimed in claim 12, is characterized in that,

At least one element of selecting from above-mentioned groups of elements 1 comprises Cu and Ge.

14. 1 kinds of rights to use require the tooth that in 1 to 13, the dental casting alloy described in any one is made

Section's dummy.