CN110584815A - 一种金属烤瓷牙制备方法 - Google Patents
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Abstract
本发明公开了一种金属烤瓷牙制备方法:制备金属烤瓷牙内冠;对牙内冠表层堆塑遮色瓷后烘干并置于烤瓷炉内在900~910℃下真空烧结,得一次处理金属烤瓷牙;对一次处理金属烤瓷牙堆塑牙本质瓷后烘干并置于烤瓷炉内在925~935℃下真空烧结,得二次处理金属烤瓷牙;对二次处理金属烤瓷牙形态修整后在其表面堆塑釉质瓷并调色后烘干,烘干后的二次处理金属烤瓷牙置于烤瓷炉内在900~910℃下烧结,得金属烤瓷牙;其能够制备表面不含气泡的成品金属烤瓷牙。
Description
技术领域
本发明属于义牙制备技术领域,涉及一种金属烤瓷牙制备方法。
背景技术
随着科学技术的不断发展和人们生活水平的日益提高,牙科修复材料越来越受到人们的关注。其中,金属烤瓷牙是用低熔瓷与金属底层材料联合制成的修复体,兼有金属的强度和瓷的美观,是当今口腔固定修复中应用最为广泛的修复体之一。传统的金属烤瓷牙的制备工艺主要为:制作牙内冠→牙内冠涂覆遮色瓷并热处理→形态修整→烧结陶瓷外冠→染色→得到金属烤瓷牙成品。目前在金属烤瓷内冠堆塑遮色瓷后直接进入烤瓷炉烧结,冷却后取出并堆塑牙本质瓷后直接进入烤瓷炉烧结,冷却后取出再进行整形处理,然后进行染色处理得到成品金属烤瓷牙,堆塑遮色瓷和牙本质瓷的过程为将堆塑遮色瓷和牙本质瓷的膏状体涂覆在牙体表面;制作出的成品金属烤瓷牙表面常常会产生大量气泡,导致只能爆瓷重做,浪费人力与材料。
发明内容
本发明解决的技术问题在于提供一种金属烤瓷牙制备方法,其能够制备表面不含气泡的成品金属烤瓷牙。
本发明是通过以下技术方案来实现:
一种金属烤瓷牙制备方法,包括以下步骤:
步骤1:制备金属烤瓷牙内冠;
步骤2:对牙内冠表层堆塑遮色瓷后烘干并置于烤瓷炉内在900~910℃下真空烧结,得一次处理金属烤瓷牙;
步骤3:对一次处理金属烤瓷牙堆塑牙本质瓷后烘干并置于烤瓷炉内在925~935℃下真空烧结,得二次处理金属烤瓷牙;
步骤4:对二次处理金属烤瓷牙形态修整后在其表面堆塑釉质瓷并调色后烘干,烘干后的二次处理金属烤瓷牙置于烤瓷炉内在900~910℃下烧结,得金属烤瓷牙。
进一步的,步骤2中烘干为500~550℃下烘干5~8min。
进一步的,步骤2中表层堆塑遮色瓷并烘干的牙内冠置入烤瓷炉后,烤瓷炉真空状态下自500~550℃以60~65℃/min的升温速率升温至烧结温度,烧结时间为13~15min。
进一步的,步骤3中烘干为500~550℃下烘干3~5min。
进一步的,步骤3中堆塑牙本质瓷的一次处理金属烤瓷牙置入烤瓷炉后,烤瓷炉真空状态下自500~550℃以50~55℃/min的升温速率升温至烧结温度,烧结时间为13~15min。
进一步的,步骤4中烘干为500~550℃下烘干3~5min。
进一步的,步骤4中形态修整的二次处理金属烤瓷牙置入烤瓷炉后,烤瓷炉自500~550℃以60~65℃/min的升温速率升温至烧结温度,烧结时间为10~11min。
与现有技术相比,本发明具有以下有益的技术效果:
本发明提供的一种金属烤瓷牙制备方法,将遮色瓷堆塑在牙内冠后并烘干,烘干温度低于遮色瓷的烧结温度,在遮色瓷还未出现自身凝结时和遮色瓷未熔附在金属牙内冠表面时,遮色瓷内含有的有机溶剂和水能够逐步的完全蒸发出来,同时有机溶剂和水的蒸发消除了遮色瓷和金属牙内冠之间的液体层,使遮色瓷和金属牙内冠能够紧密的直接接触,排出遮色瓷和金属牙内冠之间的空气,进而在烧结过程中将不会出现由于有机溶剂和水的蒸发而产生的气泡,也不会出现因为遮色瓷和金属牙内冠未紧密接触残存空气而产生的气泡;在进行烧结牙本质瓷之前和烧结釉质瓷之前也进行了烘干,使牙本质瓷和釉质瓷内含有的有机溶剂和水的及时蒸发,也使牙本质瓷与一次处理金属烤瓷牙及釉质瓷与二次处理金属烤瓷牙之间能够紧密接触,并排出他们之间残存的空气。
进一步的,在烧结过程中,烧结炉在真空状态下自牙体的烘干温度逐步上升至烧结温度,使遮色瓷在出现自身凝结前和遮色瓷熔附在金属牙内冠表面前就能够将遮色瓷内部及遮色瓷和牙内冠之间的空气全部及时溢出,使牙本质瓷内部及牙本质瓷和一次处理金属烤瓷牙之间的空气全部及时溢出,使釉质瓷内部及釉质瓷和二次处理金属烤瓷牙之间的空气全部及时溢出,其进一步避免了成品金属烤瓷牙表面出现气泡。
附图说明
图1为现有技术制备的含有大量气泡的金属烤瓷牙;
图2为本发明制备的不含有气泡的金属烤瓷牙。
具体实施方式
下面给出具体的实施例。
实施例1
一种金属烤瓷牙制备方法,包括以下步骤:
步骤1:制备金属烤瓷牙内冠;
步骤2:对牙内冠表层堆塑遮色瓷后在500℃下烘干8min后置于烤瓷炉内,烤瓷炉真空状态下自500℃以60℃/min的升温速率升温至900℃真空烧结15min,得一次处理金属烤瓷牙;
步骤3:对一次处理金属烤瓷牙堆塑牙本质瓷后500℃下烘干5min后置于烤瓷炉内,烤瓷炉真空状态下自500℃以50℃/min的升温速率升温至925℃下真空烧结15min,得二次处理金属烤瓷牙;
步骤4:对二次处理金属烤瓷牙形态修整后在其表面堆塑釉质瓷并调色后500℃下烘干5min后置于烤瓷炉内,烤瓷炉真空状态下自500℃以60℃/min的升温速率升温至900℃下烧结11min,得金属烤瓷牙。
如图1和图2所示,图1为现有技术下所制备的含有大量气泡的金属烤瓷牙,图2为通过本发明的方法制备的金属烤瓷牙,其不含有气泡。
实施例2
一种金属烤瓷牙制备方法,包括以下步骤:
步骤1:制备金属烤瓷牙内冠;
步骤2:对牙内冠表层堆塑遮色瓷后在515℃下烘干7min后置于烤瓷炉内,烤瓷炉真空状态下自515℃以61℃/min的升温速率升温至910℃下真空烧结13min,得一次处理金属烤瓷牙;
步骤3:对一次处理金属烤瓷牙堆塑牙本质瓷后515℃下烘干4.5min后置于烤瓷炉内,烤瓷炉真空状态下自515℃以55℃/min的升温速率升温至935℃下真空烧结13min,得二次处理金属烤瓷牙;
步骤4:对二次处理金属烤瓷牙形态修整后在其表面堆塑釉质瓷并调色后515℃下烘干4.5min后置于烤瓷炉内,烤瓷炉真空状态下自515℃以60℃/min的升温速率升温至905℃下烧结11min,得金属烤瓷牙。
实施例3
一种金属烤瓷牙制备方法,包括以下步骤:
步骤1:制备金属烤瓷牙内冠;
步骤2:对牙内冠表层堆塑遮色瓷后在530℃下烘干6min后置于烤瓷炉内,烤瓷炉真空状态下自530℃以63℃/min的升温速率升温至905℃下真空烧结14min,得一次处理金属烤瓷牙;
步骤3:对一次处理金属烤瓷牙堆塑牙本质瓷后530℃下烘干4min后置于烤瓷炉内,烤瓷炉真空状态下自530℃以52℃/min的升温速率升温至928℃下真空烧结14min,得二次处理金属烤瓷牙;
步骤4:对二次处理金属烤瓷牙形态修整后在其表面堆塑釉质瓷并调色后530℃下烘干4min后置于烤瓷炉内,烤瓷炉真空状态下自530℃以65℃/min的升温速率升温至910℃下烧结10min,得金属烤瓷牙。
实施例4
一种金属烤瓷牙制备方法,包括以下步骤:
步骤1:制备金属烤瓷牙内冠;
步骤2:对牙内冠表层堆塑遮色瓷后在550℃下烘干5min后置于烤瓷炉内,烤瓷炉真空状态下自550℃以65℃/min的升温速率升温至910℃下真空烧结14min,得一次处理金属烤瓷牙;
步骤3:对一次处理金属烤瓷牙堆塑牙本质瓷后550℃下烘干3min后置于烤瓷炉内,烤瓷炉真空状态下自550℃以54℃/min的升温速率升温至932℃下真空烧结13min,得二次处理金属烤瓷牙;
步骤4:对二次处理金属烤瓷牙形态修整后在其表面堆塑釉质瓷并调色后550℃下烘干3min后置于烤瓷炉内,烤瓷炉真空状态下自550℃以63℃/min的升温速率升温至910℃下烧结10min,得金属烤瓷牙。
Claims (7)
1.一种金属烤瓷牙制备方法,其特征在于,包括以下步骤:
步骤1:制备金属烤瓷牙内冠;
步骤2:对牙内冠表层堆塑遮色瓷后烘干并置于烤瓷炉内在900~910℃下真空烧结,得一次处理金属烤瓷牙;
步骤3:对一次处理金属烤瓷牙堆塑牙本质瓷后烘干并置于烤瓷炉内在925~935℃下真空烧结,得二次处理金属烤瓷牙;
步骤4:对二次处理金属烤瓷牙形态修整后在其表面堆塑釉质瓷并调色后烘干,烘干后的二次处理金属烤瓷牙置于烤瓷炉内在900~910℃下烧结,得金属烤瓷牙。
2.根据权利要求1所述的一种金属烤瓷牙制备方法,其特征在于,所述步骤2中烘干为500~550℃下烘干5~8min。
3.根据权利要求1所述的一种金属烤瓷牙制备方法,其特征在于,所述步骤2中表层堆塑遮色瓷并烘干的牙内冠置入烤瓷炉后,烤瓷炉真空状态下自500~550℃以60~65℃/min的升温速率升温至烧结温度,烧结时间为13~15min。
4.根据权利要求1所述的一种金属烤瓷牙制备方法,其特征在于,所述步骤3中烘干为500~550℃下烘干3~5min。
5.根据权利要求1所述的一种金属烤瓷牙制备方法,其特征在于,所述步骤3中堆塑牙本质瓷的一次处理金属烤瓷牙置入烤瓷炉后,烤瓷炉真空状态下自500~550℃以50~55℃/min的升温速率升温至烧结温度,烧结时间为13~15min。
6.根据权利要求1所述的一种金属烤瓷牙制备方法,其特征在于,所述步骤4中烘干为500~550℃下烘干3~5min。
7.根据权利要求1所述的一种金属烤瓷牙制备方法,其特征在于,所述步骤4中形态修整的二次处理金属烤瓷牙置入烤瓷炉后,烤瓷炉自500~550℃以60~65℃/min的升温速率升温至烧结温度,烧结时间为10~11min。
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