CN106242540A - 一种金属冠牙用烤瓷粉 - Google Patents

一种金属冠牙用烤瓷粉 Download PDF

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CN106242540A
CN106242540A CN201610585229.5A CN201610585229A CN106242540A CN 106242540 A CN106242540 A CN 106242540A CN 201610585229 A CN201610585229 A CN 201610585229A CN 106242540 A CN106242540 A CN 106242540A
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metal crown
ceramic powder
dental ceramic
raw material
carbonate
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邵明梁
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University of Jinan
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/16—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
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    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3201—Alkali metal oxides or oxide-forming salts thereof
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
    • C04B2235/3208—Calcium oxide or oxide-forming salts thereof, e.g. lime
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3284—Zinc oxides, zincates, cadmium oxides, cadmiates, mercury oxides, mercurates or oxide forming salts thereof
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    • C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3409—Boron oxide, borates, boric acids, or oxide forming salts thereof, e.g. borax
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
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    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3418—Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3427—Silicates other than clay, e.g. water glass
    • C04B2235/3463—Alumino-silicates other than clay, e.g. mullite
    • C04B2235/3472—Alkali metal alumino-silicates other than clay, e.g. spodumene, alkali feldspars such as albite or orthoclase, micas such as muscovite, zeolites such as natrolite

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  • Compositions Of Oxide Ceramics (AREA)
  • Dental Preparations (AREA)
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Abstract

本发明提供了一种金属冠牙用烤瓷粉，由以下重量份的原料制备而成：钾长石30，石英15，碳酸钙12，透辉石10，碳酸钾7，碳酸钠8，氧化锌6，硼砂12。使用本发明制备成的烤瓷粉制备烤瓷牙产品质量稳定，不存在色差，可使用二十年不变形。

Description

一种金属冠牙用烤瓷粉
技术领域
本发明涉及一种烤瓷粉，具体涉及一种金属冠牙用烤瓷粉。
背景技术
随着人民生活水平的普遍提高，人们为了自身健康的需要，修复牙齿已显得十分重要。烤瓷牙从形态、色泽上看，可以以假乱真，其耐磨性又十分优良，所以烤瓷牙得到人们的青睐。
牙科烤瓷修复体具有陶瓷的美观，深受人们的欢迎，目前在口腔矫形修复领域的应用日益广泛，但现在国内使用的烤瓷粉基本依赖进口，价格昂贵，每公斤价格高达数千元，消耗大量外汇。急切需要我国自己的产品问世，以解决我国不能够生产金属冠用烤瓷粉的现实，为牙科材料的发展提供新的技术。
金属冠主要包括镍、铬、钛以及它们的合金制备而成，现有技术采用连续式熔融进行生产，存在如下的缺陷：1）生产过程中温度存在波动；2）连续式生产存在开始化料温度低，根本不能化透原料（料头）的缺陷；这两点会使制备成的产品质量不够稳定， 给终产品带来无法弥补的质量缺陷。
发明内容
为了解决以上技术问题，本发明提供了一种金属冠牙用烤瓷粉。
本发明的技术方案如下：
按重量份称取以下原料：钾长石30，石英15，碳酸钙12，透辉石10，碳酸钾7，碳酸钠8，氧化锌6，硼砂12。放入坩埚，置于电炉中升温加热到1700℃，保温10分钟，迅速取出，倒入盛有20℃，50升蒸馏水的钢桶中冷却，然后在快速磨中磨成细粉。由研磨体尺寸来控制产品粒度，要求过250目筛全部通过，利用微波炉干燥，包装，出厂。
本发明采用间歇式生产，对生产工艺与参数进行优选，从而保障生产出来的产品质量。本发明工艺采用了高温短时加热的方式，将部分在高温下分解的物质（例如硼酸）先行预分解，这样减少了在熔化过程的体积膨胀，提高这部分原料的纯度。本发明在生产前，可先在坩埚外涂一层厚厚的保护层（高岭土加莫来石，用磷酸拌匀），可以大大提高坩埚的使用次数。
本发明利用电炉进行生产，没有燃烧排放污染；产品不含铅、铬、镉等重金属元素，无毒无味；烤瓷牙冠为金属，通过调整配方，使得瓷粉和金属冠结合性好；所采用原料大多都是分析纯，供应有保障，产品质量稳定。
本发明利用电炉进行生产，对温度要求进行严格控制，产品质量稳定，提高了现有技术熔块融化不透，烤瓷粉质量不够稳定，尤其会存在色差这一影响美观的关键问题。使用本发明制备的烤瓷粉，产品热膨胀系数与金属冠非常匹配，为13.6×10-6/℃，瓷粉和金属冠结合性非常好，耐磨性为0.04mm3，抗折强度为675MPa，保证使用20年以上而不损坏。
具体实施方式
下面结合实施例对本发明作进一步的说明。
实施例1
按重量份称取以下原料：钾长石30，石英15，碳酸钙12，透辉石10，碳酸钾7，碳酸钠8，氧化锌6，硼砂12。放入坩埚，置于电炉中升温加热到1700℃，保温10分钟，迅速取出，倒入盛有20℃，50升蒸馏水的钢桶中冷却，然后在快速磨中磨成细粉。由研磨体尺寸来控制产品粒度，要求过250目筛全部通过，利用微波炉干燥，包装，出厂。使用本发明制备的烤瓷粉制备的烤瓷牙，产品热膨胀系数与金属冠非常匹配，为13.6×10-6/℃，瓷粉和金属冠结合性非常好，耐磨性为0.04mm3，抗折强度为675MPa，保证使用20年以上而不损坏。

Claims (2)

1.一种金属冠牙用烤瓷粉，其特征在于，由以下重量份的原料制备而成：钾长石30，石英15，碳酸钙12，透辉石10，碳酸钾7，碳酸钠8，氧化锌6，硼砂12。
2.根据权利要求1所述的金属冠牙用烤瓷粉，其特征在于，采用如下制备方法制备而成：按重量份称取原料，放入坩埚，置于电炉中升温加热到1700℃，保温10分钟，迅速取出，倒入盛有20℃，50升蒸馏水的钢桶中冷却，然后在快速磨中磨成过250目筛的细粉，微波炉干燥，即可。
CN201610585229.5A 2016-07-25 2016-07-25 一种金属冠牙用烤瓷粉 Pending CN106242540A (zh)

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN110870835A (zh) * 2018-08-31 2020-03-10 柳州市佛冠齿科数字化研发有限公司 一种金属冠牙用烤瓷粉

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110870835A (zh) * 2018-08-31 2020-03-10 柳州市佛冠齿科数字化研发有限公司 一种金属冠牙用烤瓷粉

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Application publication date: 20161221