CN108992355B - 具有各层颜色梯度的牙科修复用氧化锆块的制造方法 - Google Patents

具有各层颜色梯度的牙科修复用氧化锆块的制造方法 Download PDF

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CN108992355B
CN108992355B CN201810210293.4A CN201810210293A CN108992355B CN 108992355 B CN108992355 B CN 108992355B CN 201810210293 A CN201810210293 A CN 201810210293A CN 108992355 B CN108992355 B CN 108992355B
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zirconia
raw material
color
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block
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CN108992355A (zh
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朴泰锡
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Pu Taixi
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Abstract

本发明涉及如下的因吸水率而具有各层颜色梯度的牙科修复用氧化锆块的制造方法：基于每小时的吸水量根据粉末的粒度大小而不同的性质，通过将氧化锆块的各层设定成不同的粉末的粒度，来调节颜色溶液的渗透程度，由此即使不进行现有的氧化锆用着色液工序，也可实现与天然牙齿相同的颜色及美观性优秀的产物。

Description

具有各层颜色梯度的牙科修复用氧化锆块的制造方法
技术领域
本发明涉及美观性得以提高的牙科修复用氧化锆块的制造方法，更详细地涉及如下的因吸水率而具有各层颜色梯度的牙科修复用氧化锆块的制造方法：基于每小时的吸水量根据粉末的粒度大小而不同的性质，通过将氧化锆块的各层设定成不同的粉末的粒度，来调节颜色溶液的渗透程度，由此即使不进行现有的氧化锆用着色液工序，也可实现与天然牙齿相同的颜色及美观性优秀的产物。
背景技术
近来，作为牙科修复用的材料，逐渐被替换为氧化锆，所述氧化锆不仅生物相容性优秀，外观上还与天然牙齿相似，美观性优秀，并且因机械性能高而耐久性得以提高。
另一方面，当利用氧化锆来制造假牙时，最重要的一点是通过对氧化锆适用颜色梯度来提高美观性，使得具有与天然牙齿相对应的颜色。在以往，基于颜色指南来使用颜色梯度，并且为了诱导更自然的颜色梯度，还包括所谓氧化锆用着色液的作业工序。在这里，所谓氧化锆用着色液是指按照氧化锆块的各个部位涂抹不同的颜色的方法。
作为现有的方法中的一例，韩国授权专利第10-1142805号中记载有“赋予美观性的彩色氧化锆块的制造方法”。
所述现有技术中具有如下的方法：为了诱导从浅颜色至深颜色的牙齿的颜色梯度，将氧化锆块按照部位浸渍于准备的多个颜色溶液中后，通过加热来使颜色溶液着色，并且作为另一种方法如下：将氧化锆粉末向颜色各异的各个颜色溶液投入之后，通过加热使颜色溶液浸透粉末，捞出浸透有颜色溶液的粉末并进行干燥之后，基于颜色指南，注入加压装置进行加压，从而制造出具有颜色梯度的氧化锆块。
在这里，所述现有技术的缺点为如下：氧化锆块的所有部分均由相同的吸水率形成，因此具有工作人员需一边在每个部分交替颜色溶液来进行着色的繁琐。
如上所述，为了解决氧化锆用着色液工序的繁琐，在韩国授权专利第10-1276816号中提出“具有颜色梯度的人工牙齿用氧化锆块的制造方法”。
所述现有技术为如下的方法：分别准备有色氧化锆粉末与白色氧化锆粉末来进行混合，向有色氧化锆粉末中将白色氧化锆粉末以互不相同的重量比进行调配，由此准备呈现各不相同的颜色的多个原料，将该原料按照颜色淡的顺序或按照颜色深的顺序注入压缩成型用模具之后，进行加压来生产具有颜色梯度的氧化锆块。
但是，所述现有方法产生如下的问题：由于要求有需以不同的重量比来准备有色氧化锆粉末与白色氧化锆粉末的高超的技术，因而所述方法因人工成本、生产成本等使生产率显著降低。
因此，迫切需要如下的氧化锆块的制造方法：可在氧化锆块中适用与天然牙齿相对应的颜色梯度是不言而论，还可通过改善复杂且不便的现有的氧化锆用着色液方法及有色与白色的氧化锆粉末混合方法，来简便且迅速地具有规定的颜色梯度。
现有技术文献
专利文献
专利文献1：韩国授权专利第10-1142805号“赋予美观性的彩色氧化锆块的制造方法”
专利文献2：韩国授权专利第10-1276816号“具有颜色梯度的人工牙齿用氧化锆块的制造方法”。
发明内容
技术问题
本发明为了更积极地解决现有的着色液方法的根据操作人员的能力使颜色梯度的品质不一致且因要求专业技术而使生产成本上升的问题而提出，并且本发明的技术问题在于，提供通过提供各层的吸水率不同的氧化锆块，使得提供颜色梯度可简单且简便地一致表现的氧化锆块。
解决问题的手段
为了实现所述的技术问题，本发明所提出的因吸水率而具有各层颜色梯度的牙科修复用氧化锆块的制造方法如下。
所述因吸水率而具有各层颜色梯度的牙科修复用氧化锆块的制造方法包括：主原料分离步骤(S10)，将氧化锆粉碎成各不相同的粒度，按照各不相同的粒度区分并准备；辅助原料混合步骤(S20)，向各个具有各不相同的粒度的主原料投入并混合能够调节吸水率的辅助原料；原料加压步骤(S30)，按照粒度大的顺序或按照粒度小的顺序，将混合有辅助原料的主原料向压缩成型用模具投入之后，压缩成型为块状；原料着色步骤(S40)，将成型的氧化锆块放入浸透有颜色溶液的水箱之后，通过加热来诱导颜色溶液渗透至氧化锆块中；以及热处理收尾步骤(S50)，对渗透有颜色溶液的氧化锆块进行干燥之后，以常温的热量进行煅烧。
并且，本发明的特征在于，在所述主原料分离步骤(S10)中，将氧化锆粉碎成30nm至10μm范围内的各不相同的粒度。
并且，所述辅助原料混合步骤(S20)还包括：辅助原料准备步骤(S21)，将辅助原料粉碎成30nm至10μm范围内最小各不相同的粒度之后，按照粒度区分并准备；以及辅助原料投入步骤(S22)，将按照粒度来准备的辅助原料分别向相同粒度的主原料投入。
随之，所述辅助原料为二氧化硅粉末、羟磷灰石粉末、氧化钇粉末、碳粉末中的一种。
发明的效果
根据由如上所述的结构形成的本发明具有如下的效果：使氧化锆块分层，每个分层的吸水率各不相同，因此颜色溶液对各层的渗透量不同，使得诱导出各层所被着色的色感的程度不同，从而可生产出颜色梯度表现一定的高品质的牙科修复用氧化锆块。
并且，由于将二氧化硅粉末、羟磷灰石粉末、氧化钇粉末、碳粉末中的一种粉末混合于主原料中，因此氧化锆块的各层的吸水率得到细微的调节，从而还具有氧化锆块的颜色范围限度得以提高的效果。
最后，还具有如下的效果：由于医疗设备专业生产企业直接生产氧化锆块，因而无需在牙科或牙科技工所进行额外的着色液工作，可直接将一直保持一定品质的具有颜色梯度的种植体冠为患者进行手术。
附图说明
图1为依次罗列本发明的优选实施例的因吸水率而具有各层颜色梯度的牙科修复用氧化锆块的制造方法的流程图。
图2为天然牙齿的各层的区分图。
附图标记的说明
S10：主原料分离步骤 S20：辅助原料混合步骤
S30：原料加压步骤 S40：原料着色步骤
S50：热处理收尾步骤
具体实施方式
以下，参照附图，对本发明的结构及由此带来的作用、效果进行全面记述。
参照在下文中与附图一同详细叙述的实施例，本发明的优点及特点，以及用于实现它们的方法会变得更加清楚。然而，本发明不限定与在下文中公开的实施例，可实现为互不相同的多种形式，但本实施例是为了使本发明的公开更加完整，并且为了向本发明所属技术领域的普通技术人员更完整地说明发明的范畴而提供，本发明仅由发明要求保护范围来被定义。并且，在说明书全文中，相同参考标记指代相同结构要素。
本发明涉及美观性得以提高的牙科修复用氧化锆块的制造方法。
首先，本发明的主旨在于，涉及如下的因吸水率而具有各层颜色梯度的牙科修复用氧化锆块的制造方法：基于每小时的吸水量根据粉末的粒度大小而不同的性质，通过将氧化锆块的各层设定成不同的粉末的粒度，来调节颜色溶液的渗透程度，由此即使不进行现有的氧化锆用着色液工序，也可实现与天然牙齿相同的颜色及美观性优秀的产物。
并且，本发明的颜色溶液为通过溶解氯化铁(FeCl36H2O)、氯化钼(MoCl3)、六水氯化铬(CrCl36H2O)、氯化钒(VCl3)等制备而成，并且为基于向所述颜色溶液中浸渍氧化锆块来进行着色的方法。
如图1中罗列的流程图所示，本发明通过依次经由主原料分离步骤(S10)、辅助原料混合步骤(S20)、原料加压步骤(S30)、原料着色步骤(S40)、热处理收尾步骤(S50)，来生产因吸水率而形成颜色梯度的牙科修复用氧化锆块。
所述主原料分离步骤(S10)是指将氧化锆粉碎成各不相同的粒度，按照各不相同的粒度区分并准备的步骤。例如，通过与粉末的粒子大小成比例，吸收水分的能力产生差异，粒子的大小越微细，吸收水分的能力越提高。其原因在于，随着粉末的粒子越小，粉末与粉末之间的分隔空间的数量增加，这是不言而论的，因此，根据由于空间的面积变窄，因而水分欲从广阔空间向狭窄的空间移动的伯努利原理，与由大粒度粉末形成的氧化锆块相比，能够吸收更多量的水分。
如上所述，在本发明中，为了利用根据粒度大小而吸水率不同的伯努利原则，来在氧化锆中适用颜色梯度，将主原料，即，将氧化锆粉碎成各不相同的粒度，将粉碎的主原料按照粒度大小区分并准备。更详细地，将氧化锆粉碎成30nm至10μm范围内的各不相同的粒度是属于最优选实施例。
所述氧化锆粉末的粒度大小属于优选实施例的根据为基于如下的重复实验的结果。
进行实验之前，如图2所示，从齿根至上端部，天然牙齿总共区分为六层，给每个层赋予了最合适的柔和色调的颜色表的源代码。并且，将氧化锆粉碎成粒度分别为0.03μm至10μm以下的程度，将粉碎的粉末50多种注入压缩成型用模具之后，将通过加压获得的氧化锆块50多种投入了颜色溶液中。投入至颜色溶液中的氧化锆块在常温条件下加热约5分钟至10分钟，从而造成了颜色能够迅速渗透至氧化锆块中的环境，在通过如上所述的操作工序进行了着色的氧化锆块50多种中，摘选出了呈现出与天然牙齿的源代码最接近的颜色的块，并以百分比来记录了该块的粒度大小与源代码之间的准确度。
表1
Figure GDA0002950216670000051
<按照粒度大小的天然牙齿颜色对比表>
如上述的比较表所示，相当于天然牙齿的齿根的A1的源代码为‘#FFCBCB’，与具有0.03μm至0.15μm的粒度的氧化锆块的颜色最为相似，其中0.06μm与A1的源代码以99.7％的准确度相同，以0.03μm为99.5％的准确度、0.1μm为98％的准确度、0.12μm为95％的准确度、0.15μm为92％的准确度的顺序，由此可知0.06μm的情况准确性最高。因此，最优选地，相当于齿根的A1使用粉碎成0.06μm的大小的氧化锆粉末。并且，相当于天然牙齿的齿根中的上一阶段的A2的源代码为‘#FFDDDD’，与具有0.15μm至0.3μm的粒度的氧化锆块的颜色最为相似，其中以0.15μm,0.18μm,0.2μm,0.24μm,0.27μm,0.3μm的粒度顺序准确性最高。因此，最优选地，A2使用粉碎成5μm的大小的氧化锆粉末。此外，A3为0.3μm，A4为0.4μm，A5为0.55μm，A6为0.65μm内含有最接近的颜色。
另一方面，粒度大小为0.65μm以上的块吸收非常微少量的颜色溶液，因此均与A6的源代码无太大区别而呈现了白色的色感。
所述辅助原料混合步骤(S20)是指向各个主原料投入能够调节吸水率的辅助原料并进行混合的步骤。在这里，辅助原料的材料根据使用人的情况选自二氧化硅粉末、羟磷灰石粉末、氧化钇粉末、碳粉末中的一种材料来使用。
另一方面，所述辅助原料混合步骤(S20)通过依次进行辅助原料准备步骤(S21)与辅助原料投入步骤(S22)来完成，所述辅助原料准备步骤(S21)是指将辅助原料粉碎成30nm至10μm范围内各不相同的粒度之后，按照各个粒度区分并准备的步骤，所述辅助原料投入步骤(S22)是指将按照各个粒度准备的辅助原料分别向各个具有相同粒度的主原料投入的步骤。
也就是说，向粒度的大小为30nm的主原料中投入粉碎成30nm的粒度的辅助原料并进行混合，向20μm的主原料中投入粉碎成20μm的粒度的辅助原料并进行混合。
下列表为将仅由主原料形成的氧化锆块(实施例1)与混合有主原料及辅助原料的氧化锆块(实施例2)分别投入颜色溶液中，并比较分析了互相之间的着色时间与着色力的表。
另一方面，在实施例1中所使用的主原料使用了由85重量百分比至90重量百分比的主原料与辅助原料10重量百分比至15重量百分比的比例混合而成的原料。
表2
Figure GDA0002950216670000071
<根据辅助原料的混合的颜色溶液着色力比较表>
如上所述，可确认的是，混合有辅助原料的氧化锆块与仅由主原料形成的氧化锆块相比，大体上着色提高了0.1％至1％左右。
所述原料加压步骤(S30)为将混合有辅助原料的主原料按照粒度大的顺序或按照粒度小的顺序向压缩成型用模具注入之后，压缩成型为块状的步骤，与此同时，为了对混合有主原料及辅助原料的混合原料进行成型，使用压缩成型用模具是最为优选的方法，但不一定限定于压缩成型用模具。
另一方面，在所述原料加压步骤(S30)中，向压缩成型用模具中注入的主原料及辅助原料借助压缩成型用模具的加压来成型为块状，此时，压缩成型用模具通过如下的逐渐加压的方法来进行成型，即，将原料以500kg/km2至600kg/km2的力进行第一次加压，再以700kg/km2至800kg/km2的力进行第二次加压，最后以800kg/km2至1000kg/km2的力进行第三次加压。
如上所述，一边从低压至高压并行进行成型的理由为为了提高氧化锆块的颜色渗透力，而最大限度地保持粉末与粉末之间形成的分隔空间。
所述原料着色步骤(S40)为将成型的氧化锆块放入浸透有颜色溶液的水箱之后，通过加热来诱导颜色溶液渗透至氧化锆块中的步骤。
在所述原料着色步骤(S40)中，虽然说明为向浸透有颜色溶液的水箱中放入氧化锆块之后加热，但更优选地，首先，将浸透在水箱中的颜色溶液在50℃至100℃温度条件下加热之后，放入氧化锆块，这样可提高块中的强度，由此预防因温度差而引起的龟裂。
并且，在所述原料着色步骤(S40)中，将氧化锆块在35℃至50℃温度的颜色溶液中浸渍10分钟至30分钟，这是向氧化锆块进行着色的最完美的条件。
所述热处理收尾步骤(S50)为将渗透有颜色溶液的氧化锆块进行干燥之后，以常温的热量进行煅烧的步骤，更详细地为如下的步骤：将颜色被着色的氧化锆块从水箱捞出放入目网之后，在从四面提供有5℃至20℃温度的热风的干燥炉中进行20分钟至30分钟的第一次干燥，再次在从四面提供有10℃至25℃温度的热风的干燥炉中进行10分钟至20分钟的第二次干燥。为了去除存在于块内的金属氯化物，将像这样经干燥的氧化锆块放入煅烧炉之后进行煅烧。
如上所述，依次经由主原料分离步骤(S10)、辅助原料混合步骤(S20)、原料加压步骤(S30)、原料着色步骤(S40)、热处理收尾步骤(S50)实现的牙科修复用氧化锆块为了表现与天然牙齿相对应的颜色梯度，从利用着色液方法来在氧化锆块的各层一一涂抹各不相同的颜色的现有的方法中脱离，通过氧化锆块的各层形成不同的吸水率，因此颜色溶液对各层的渗透量不同，使得各个部分被着色的色感的程度不同，从而可生产出更加简单、快速且颜色梯度的品质一定地得以提高的牙科修复用氧化锆块，并且，通过将用于调节吸水率的二氧化硅粉末、羟磷灰石粉末、氧化钇粉末、碳粉末中的一种粉末混合于主原料中，来进行制备，从而可按照氧化锆块的各层进行着色的颜色范围限度得以增加。
最终，医疗设备专业生产企业以如上所述的方法直接生产氧化锆块，因而无需在牙科或牙科技工所进行额外的着色液工作，可直接将一直保持一定品质的具有颜色梯度的种植体冠为患者进行手术。
以上说明的本发明是以在附图中所图示的一实施例为参照进行了说明，但这仅为示例性的，需要清楚的是，只要是本技术领域的普通技术人员，均可从此进行多种变更及等同的其他实施例。因此，本发明的真正的技术保护范围应根据所附发明要求保护范围来进行解释，与此等同的范围内的所有技术思想均应解释为包含在本发明的要求范围。

Claims (1)

1.一种具有各层颜色梯度的牙科修复用氧化锆块的制造方法，其特征在于，包括：
主原料分离步骤(S10)，将氧化锆粉碎成各不相同的粒度，按照各不相同的粒度区分并准备；
辅助原料混合步骤(S20)，向各个具有各不相同的粒度的主原料投入并混合能够调节吸水率的辅助原料；
原料加压步骤(S30)，按照粒度大的顺序或按照粒度小的顺序，将混合有辅助原料的主原料向压缩成型用模具投入之后，压缩成型为块状；
原料着色步骤(S40)，将成型的氧化锆块放入浸透有颜色溶液的水箱之后，通过加热来诱导颜色溶液渗透至氧化锆块中；以及
热处理收尾步骤(S50)，对渗透有颜色溶液的氧化锆块进行干燥之后，以常温的热量进行煅烧，
在所述主原料分离步骤(S10)中，将氧化锆粉碎成30nm至10μm范围内的各不相同的粒度，
所述辅助原料混合步骤(S20)还包括：
辅助原料准备步骤(S21)，将辅助原料粉碎成30nm至10μm范围内的各不相同的粒度之后，按照粒度区分并准备；以及
辅助原料投入步骤(S22)，将按照粒度来准备的辅助原料分别向相同粒度的主原料投入，
所述辅助原料为二氧化硅粉末、羟磷灰石粉末、氧化钇粉末、碳粉末中的一种。
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