WO2022262419A1 - 一种牙科用硅酸锂玻璃陶瓷及其制备方法、硅酸锂玻璃陶瓷修复体 - Google Patents

一种牙科用硅酸锂玻璃陶瓷及其制备方法、硅酸锂玻璃陶瓷修复体 Download PDF

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WO2022262419A1
WO2022262419A1 PCT/CN2022/088803 CN2022088803W WO2022262419A1 WO 2022262419 A1 WO2022262419 A1 WO 2022262419A1 CN 2022088803 W CN2022088803 W CN 2022088803W WO 2022262419 A1 WO2022262419 A1 WO 2022262419A1
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silicate glass
lithium silicate
ceramic
frit
colorant
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PCT/CN2022/088803
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English (en)
French (fr)
Inventor
韩成玮
侯成
宋国轶
孟雪
金天罡
郑海峰
陈拥庆
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辽宁爱尔创生物材料有限公司
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Publication of WO2022262419A1 publication Critical patent/WO2022262419A1/zh

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    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C10/00—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition
    • C03C10/0009—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition containing silica as main constituent
    • 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
    • A61K6/831—Preparations for artificial teeth, for filling teeth or for capping teeth comprising non-metallic elements or compounds thereof, e.g. carbon
    • A61K6/833—Glass-ceramic composites
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B32/00—Thermal after-treatment of glass products not provided for in groups C03B19/00, C03B25/00 - C03B31/00 or C03B37/00, e.g. crystallisation, eliminating gas inclusions or other impurities; Hot-pressing vitrified, non-porous, shaped glass products
    • C03B32/02—Thermal crystallisation, e.g. for crystallising glass bodies into glass-ceramic articles

Definitions

  • the present application relates to the technical field of dental materials, in particular to a dental lithium silicate glass-ceramic, a preparation method thereof, and a lithium silicate glass-ceramic restoration.
  • Lithium disilicate (Li 2 Si 2 O 5 ) glass-ceramics has both the transparency of glass and the strength of ceramics, and is widely used in the field of dental restoration materials, especially in aesthetic restorations. For example, when doing minimally invasive restorations or ultra-thin veneers, compared with traditional zirconia materials, the unique texture and opalescence of lithium disilicate glass-ceramic materials are more suitable as dental restoration materials.
  • lithium disilicate glass-ceramic restorations are usually prepared by die-casting, and the die-casting temperature is higher than 900°C.
  • the die-casting temperature is higher than 900°C.
  • incomplete die-casting is prone to occur, resulting in product failure.
  • the pass rate is reduced; at the same time, the existing die-casting temperature is too high, resulting in an increase in the surface roughness of the obtained lithium disilicate glass-ceramic restoration, and the subsequent grinding and polishing time is longer, resulting in a decrease in production efficiency of the product.
  • the purpose of the embodiments of the present application is to provide a lithium silicate glass ceramic and its preparation method, and a lithium silicate glass ceramic prosthesis, so as to reduce the softening temperature of the lithium silicate glass ceramic.
  • the specific technical scheme is as follows:
  • the first aspect of the present application provides a dental lithium silicate glass-ceramic, which includes the following original components in mass percentage:
  • ZnO/ La2O3 is 1 :1-10:1;
  • the nucleating agent includes at least one of P 2 O 5 , TiO 2 , and Nb 2 O 5 ;
  • the additives include CaO, BaO, MgO, SrO, B 2 O 3 , Y 2 O 3 , La 2 O 3 , Bi 2 O 3 , SnO 2 , TiO 2 , GeO 2 , Nb 2 O 5 , WO 3 , MoO 3. At least one of Tb 4 O 7 ;
  • Described colorant comprises yellow colorant, red colorant, gray colorant;
  • the fluorescent agent includes at least two of Er 2 O 3 , Nd 2 O 5 , Tm 2 O 3 , Sm 2 O 3 , Eu 2 O 3 , Dy 2 O 3 , Yb 2 O 3 , and Ho 2 O 3 .
  • the second aspect of the present application provides a method for preparing the lithium silicate glass-ceramic described in the present application, which comprises the following steps:
  • the third aspect of the present application provides a method for preparing the lithium silicate glass-ceramic described in the present application, which includes the following steps:
  • the frit powder is dry pressed at 15MPa-100MPa, and then isostatically pressed at 100MPa-260MPa to obtain a green body;
  • the green body is subjected to heat treatment under vacuum conditions to obtain lithium silicate glass ceramics, the degree of vacuum is 100Pa-5000Pa, and the heat treatment temperature is 600°C-1000°C.
  • a fourth aspect of the present application provides a method for preparing the lithium silicate glass-ceramic described in the present application, which includes the following steps:
  • the green body is subjected to heat treatment under vacuum conditions to obtain lithium silicate glass ceramics, the degree of vacuum is 100Pa-5000Pa, and the heat treatment temperature is 600°C-1000°C.
  • the fifth aspect of the present application provides a lithium silicate glass-ceramic prosthesis, which is made according to the lithium silicate glass-ceramic described in the present application.
  • Lithium silicate glass ceramics provided by the application can reduce the softening temperature of lithium silicate glass ceramics by regulating the content of ZnO and La 2 O 3 in the original components, so that lithium silicate glass ceramics can be prepared into silicic acid by die-casting.
  • the die-casting temperature of the lithium glass-ceramic restoration is also relatively low, specifically, the die-casting temperature is 700°C-900°C.
  • the obtained lithium silicate glass-ceramic restoration has a small surface roughness and complete die-casting, and also has high strength and good light transmission.
  • the application provides a lithium silicate glass-ceramic for dental use, which includes the following original components in mass percentage:
  • ZnO/La 2 O 3 is 1:1-10:1, preferably 2:1-8:1;
  • the nucleating agent includes at least one of P 2 O 5 , TiO 2 , and Nb 2 O 5 , preferably P 2 O 5 ;
  • Additives include CaO, BaO, MgO, SrO, B 2 O 3 , Y 2 O 3 , La 2 O 3 , Bi 2 O 3 , SnO 2 , TiO 2 , GeO 2 , Nb 2 O 5 , WO 3 , MoO 3 , At least one of Tb 4 O 7 ;
  • Colorants include yellow colorants, red colorants, and gray colorants
  • the fluorescent agent includes at least two of Er 2 O 3 , Nd 2 O 5 , Tm 2 O 3 , Sm 2 O 3 , Eu 2 O 3 , Dy 2 O 3 , Yb 2 O 3 , and Ho 2 O 3 .
  • the mass percentages of each original component are as follows:
  • the lithium silicate glass-ceramic provided by this application is not limited to any theory.
  • the softening temperature of the lithium silicate glass-ceramic can be reduced, so that the lithium silicate glass can be made by die-casting.
  • the die-casting temperature of the lithium silicate glass-ceramic restoration prepared from ceramics is also relatively low, specifically, the softening temperature is 500°C-560°C, and the die-casting temperature is 700°C-900°C.
  • the obtained lithium silicate glass-ceramic restoration has a small surface roughness and complete die-casting, and also has high strength and good light transmission.
  • the type of lithium silicate glass ceramics is not particularly limited, as long as the purpose of the application can be achieved, for example, the type of lithium silicate glass ceramics may include but not limited to lithium metasilicate, lithium disilicate Wait.
  • the original components refer to the original material components used in the preparation of lithium silicate glass ceramics.
  • the original components usually contain impurities such as iron ions, which will affect the light transmittance and fluorescence properties of lithium silicate glass ceramics.
  • the total mass percentage of iron ions in the original components of the present application is less than or equal to 0.01, so as to avoid excessive iron ions and reduce the light transmittance of lithium silicate glass ceramics.
  • the aforementioned iron ions may be ferrous ions or ferric ions.
  • ZnO/La 2 O 3 is 1:1-10:1" means that the mass ratio of ZnO to La 2 O 3 is 1:1-10:1.
  • the softening temperature of lithium silicate glass ceramics refers to the temperature at which lithium silicate glass ceramics just appear to melt.
  • the original components may also include alkali metal oxides, the mass percentage of alkali metal oxides is 0.5-7, preferably 2-5 , and the alkali metal oxides are selected from Na2O , K 2 O, Cs 2 O, Rb 2 O, preferably, the alkali metal oxide includes at least K 2 O.
  • alkali metal oxides helps glass melting and glass crystallization, and reduces the glass melting temperature.
  • the yellow colorant may include but not limited to at least one of CeO 2 , Pr 2 O 3 , V 2 O 5 , zirconium vanadium yellow, zirconium praseodymium yellow, etc.
  • the red colorant may include But not limited to at least one of Er 2 O 3 , chromium tin red, spinel red, etc.
  • the gray colorant may include but not limited to at least one of MnO, NiO, Nd 2 O 3 , etc.
  • the present application also provides a preparation method of the lithium silicate glass-ceramics of any of the aforementioned schemes, which comprises the following steps:
  • the ceramic block is heat-treated at 600°C-1000°C, preferably at 650°C-850°C, to obtain lithium silicate glass ceramics.
  • the water quenching in the above step (1) refers to the process of pouring the melted original components into cold water.
  • the present application has no particular limitation on the mold, as long as the purpose of the present application can be achieved, for example, a casting mold.
  • the obtained lithium silicate glass ceramic has good light transmittance and strength.
  • the obtained lithium silicate glass ceramics have a lower softening temperature, good light transmittance and strength, so that silicon
  • the die-casting temperature is also lower when lithium silicate glass ceramics are made into lithium silicate glass ceramic restorations by die casting. Specifically, the die-casting temperature is 700°C-900°C.
  • the present application also provides another preparation method of lithium silicate glass-ceramic according to any of the aforementioned schemes, which comprises the following steps:
  • the average particle size of the frit powder is preferably 2 ⁇ m-20 ⁇ m;
  • the frit powder is dry pressed at 15MPa-100MPa, and then isostatically pressed at 100MPa-260MPa to obtain a green body;
  • the vacuum degree is 100Pa-5000Pa, preferably 500Pa-3000Pa
  • the heat treatment temperature is 600°C-1000°C, preferably 750°C-850°C.
  • the die-casting temperature is 700°C-850°C.
  • the water quenching in step (1) refers to the process of pouring the melted original components into cold water.
  • the present application has no particular limitation on the grinding method, as long as the purpose of the present application can be achieved, for example, the frit is coarsely ground first, and then finely ground.
  • the vacuum degree of heat treatment is 100Pa-5000Pa, and the temperature is 600°C-1000°C, which is beneficial to improve the light transmittance and strength of lithium silicate glass ceramics.
  • dry pressing refers to putting frit powder into a mold, pressing on a press, making the powder close to each other in the mold, and firmly combined by internal friction to form a green body of a certain shape.
  • isostatic pressing refers to placing the sample to be pressed in a high-pressure container, and using a liquid medium to uniformly pressurize the sample from all directions to form a green body of a certain shape.
  • the present application has no particular limitation on the press and the high-pressure vessel, which may be known in the art, as long as the purpose of the present application can be achieved.
  • the present application also provides another preparation method of the lithium silicate glass-ceramics of any of the aforementioned schemes, which comprises the following steps:
  • the green body is subjected to heat treatment under vacuum conditions to obtain lithium silicate glass ceramics, the degree of vacuum is 100Pa-5000Pa, and the heat treatment temperature is 600°C-1000°C.
  • the die-casting temperature is 700°C-850°C.
  • the vacuum degree of heat treatment is 100Pa-5000Pa, and the temperature is 600°C-1000°C, which is conducive to improving the light transmittance and strength of lithium silicate glass ceramics.
  • the present application also provides a lithium silicate glass-ceramic prosthesis, which is made by using the lithium silicate glass-ceramic provided in the present application.
  • the present application has no particular limitation on the method for preparing the lithium silicate glass-ceramic prosthesis from the lithium silicate glass-ceramic, as long as the purpose of the present application can be achieved. For example, die casting.
  • the die-casting method may include but is not limited to the following steps: first prepare the wax-type of the restoration, then embed the wax-type of the restoration with an investment material, solidify to obtain the embedding ring, heat the embedding ring to melt the wax-type and After volatilization, it is put into a die-casting furnace, and then the lithium silicate glass-ceramic is put into an embedding ring to die-cast the lithium-silicate glass-ceramic to obtain a lithium-silicate glass-ceramic restoration.
  • the die-casting temperature is 700°C-900°C.
  • the present application has no particular limitation on the embedding material, as long as the purpose of the application can be achieved, for example, the embedding material is phosphate.
  • the embedding material is phosphate.
  • the green body was heat-treated in a vacuum atmosphere furnace with a vacuum degree of 3000 Pa, a heat treatment temperature of 850° C., and a heat treatment time of 2 hours to obtain lithium disilicate glass ceramics. Then, lithium disilicate glass ceramics were made into lithium disilicate glass ceramic restorations by die-casting method, and the die-casting temperature was 700°C.
  • the components other than zirconium praseodymium yellow, zirconium vanadium yellow, chromium tin red, and Nd 2 O 5 are fully mixed and evenly put into the platinum crucible, and the platinum crucible is put into the heating furnace. Control the heating temperature to 1500° C. and the heating time to 60 minutes to melt and homogenize each component, then pour into cold water to obtain a frit. The frit was coarsely ground and finely ground, so that the average particle diameter D50 was 5 ⁇ m to obtain frit powder.
  • the green body was heat-treated in a vacuum atmosphere furnace with a vacuum degree of 1500 Pa, a heat treatment temperature of 850° C., and a heat treatment time of 2 hours to obtain lithium disilicate glass ceramics. Then, lithium disilicate glass ceramics were made into lithium disilicate glass ceramic restorations by die-casting method, and the die-casting temperature was 800°C.
  • the components other than zirconium praseodymium yellow, zirconium vanadium yellow, spinel red and NiO are fully mixed and evenly put into the platinum crucible, and the platinum crucible is put into the heating furnace, and the heating is controlled.
  • the temperature is 1600° C., and the heating time is 30 minutes.
  • Each component is melted and homogenized, and then poured into cold water to obtain a frit.
  • the frit was coarsely ground and finely ground, so that the average particle diameter D50 was 5 ⁇ m to obtain frit powder.
  • the frit powder is fully mixed with zirconium praseodymium yellow, zirconium vanadium yellow, spinel red, and NiO, and then put into a mold, and then dry-pressed at 260MPa to obtain a green body.
  • the green body was heat-treated in a vacuum atmosphere furnace with a vacuum degree of 2000 Pa, a heat treatment temperature of 700° C., and a heat treatment time of 2 hours to obtain lithium disilicate glass ceramics.
  • lithium disilicate glass-ceramics were made into lithium disilicate glass-ceramic restorations by die-casting at a die-casting temperature of 750°C.
  • the softening temperature of the glass-ceramics was tested according to the standard ISO6872-2015 "Dentistry. Ceramic materials" ("Dentistry. Ceramic materials”) using a thermal dilatometer.
  • the die-casting test was carried out using a French UGIN die-casting furnace, the set pressure was 1.5 bar, the die-casting time was 3 minutes, and the die-casting temperature was the die-casting temperature in each embodiment or comparative example. Repeat die-casting of 10 crowns, and count the number of incomplete die-castings.
  • the roughness of glass-ceramic restorations was measured with a Waveline (Jenoptik, Germany) portable roughness meter with a scanning length of 1.5 mm and a scanning speed of 0.15 mm/s.
  • a universal material testing machine was used to test the bending strength of glass-ceramic restorations according to the standard ISO6872-2015 "Dentistry. Ceramic materials” ("Dentistry. Ceramic materials”).
  • the softening temperature of the lithium disilicate glass-ceramic obtained in Examples 1-10, and the die-casting temperature and surface roughness of the lithium disilicate glass-ceramic restoration are all less than those of Comparative Examples 1 and 2, and The lithium disilicate glass-ceramic restorations in Examples 1-10 were all obtained by complete die-casting, while in Comparative Examples 1 and 2 there were cases of incomplete die-casting. It shows that the lithium silicate glass-ceramic prosthesis made by using the lithium-silicate glass-ceramic provided by the application has small surface roughness, can be completely die-casted, and has a low die-casting temperature.
  • the lithium disilicate glass-ceramic restorations in Examples 1-10 all have good light transmittance and bending strength. While the lithium disilicate glass-ceramic restoration in Comparative Example 1 has high flexural strength, but the light transmittance is low; the lithium disilicate glass-ceramic restoration in Comparative Example 2 has high light transmittance, but the bending strength is relatively high. If the strength is too low, the requirements for strength and light transmittance cannot be met at the same time. It thus shows that the lithium silicate glass-ceramic prosthesis made by using the lithium-silicate glass-ceramic provided by the present application also has high light transmittance and bending strength at the same time.
  • Example 7 and Comparative Example 2 It can be seen from Example 7 and Comparative Example 2 that although the original components in the formula are close, the softening temperature, die-casting temperature and surface roughness of the two are quite different, and the lithium disilicate glass-ceramic in Example 7 The restoration was obtained by complete die-casting, while in Comparative Example 2 there was incomplete die-casting.
  • the softening temperature of lithium silicate glass ceramics can be effectively reduced, thereby reducing the die-casting temperature when preparing lithium silicate glass ceramic restorations, and silicon
  • the surface roughness of lithium oxide glass-ceramic restorations can be improved, and it can be completely die-cast during the die-casting process.
  • Example 8 As can be seen from Example 8 and Comparative Example 1, the original components in the formula are the same, but the content of the original components is different, so that the softening temperature, die-casting temperature and surface roughness of the two are quite different, and in Example 8 Lithium disilicate glass-ceramic restorations were obtained by complete die-casting, while in Comparative Example 2 there was incomplete die-casting. Thereby it is shown that as long as the original components of lithium silicate glass ceramics and the content of the original components are within the scope of the present application, the softening temperature of lithium silicate glass ceramics can be effectively reduced, thereby reducing the cost of preparing lithium silicate glass ceramic restorations.
  • the die-casting temperature, as well as the surface roughness of the lithium silicate glass-ceramic restoration can be completely die-cast during the die-casting process.

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Abstract

本申请提供一种牙科用硅酸锂玻璃陶瓷及其制备方法、硅酸锂玻璃陶瓷修复体，牙科用硅酸锂玻璃陶瓷包括以下质量百分含量的原始组分：SiO 2：49-79、Li 2O：11-20、ZnO+La 2O 3：5-16、成核剂：1-10、ZrO 2：0-5、添加剂：0-15、着色剂：0-6、荧光剂：0-3.2，其中，ZnO/La 2O 3为1∶1-10∶1；成核剂包括P 2O 5、TiO 2、Nb 2O 5中的至少一种；添加剂包括CaO、BaO、MgO、SrO、B 2O 3、Y 2O 3、La 2O 3、Bi 2O 3、SnO 2、TiO 2、GeO 2、Nb 2O 5、P 2O 5、WO 3、MoO 3、Tb 4O 7中的至少一种；着色剂包括黄色着色剂、红色着色剂、灰色着色剂；荧光剂包括Er 2O 3、Nd 2O 5、Tm 2O 3、Sm 2O 3、Eu 2O 3、Dy 2O 3、Yb 2O 3、Ho 2O 3中的至少两种。本申请提供的硅酸锂玻璃陶瓷的软化温度低，且采用压铸法制备硅酸锂玻璃陶瓷修复体的压铸温度也较低。

Description

一种牙科用硅酸锂玻璃陶瓷及其制备方法、硅酸锂玻璃陶瓷修复体
本申请要求于2021年6月18日提交中国专利局、申请号为202110676002.2发明名称为“一种牙科用硅酸锂玻璃陶瓷及其制备方法、硅酸锂玻璃陶瓷修复体”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及牙科用材料技术领域，特别是涉及一种牙科用硅酸锂玻璃陶瓷及其制备方法、硅酸锂玻璃陶瓷修复体。
背景技术
二硅酸锂(Li 2Si 2O 5)玻璃陶瓷既具有玻璃的透光度又具有陶瓷的强度，被广泛应用于牙齿修复材料领域，尤其是在美学修复方面具有独特的优势。例如，在做微创修复或超薄贴面时，与传统的氧化锆材料相比，二硅酸锂玻璃陶瓷材料特有的质感和乳光更适合作为牙齿修复的材料。
目前，二硅酸锂玻璃陶瓷修复体通常采用压铸法制备，且压铸温度高于900℃，当制作形态复杂的二硅酸锂玻璃陶瓷修复体时，容易出现压铸不完全的现象，导致产品的合格率下降；同时，现有的压铸温度过高导致得到的二硅酸锂玻璃陶瓷修复体表面粗糙度增大，后续打磨抛光时间更长，导致产品的生产效率降低。
发明内容
本申请实施例的目的在于提供一种硅酸锂玻璃陶瓷及其制备方法、硅酸锂玻璃陶瓷修复体，以降低硅酸锂玻璃陶瓷的软化温度。具体技术方案如下：
本申请的第一方面提供一种牙科用硅酸锂玻璃陶瓷，其包括以下质量百分含量的原始组分：
Figure PCTCN2022088803-appb-000001
Figure PCTCN2022088803-appb-000002
其中，
ZnO/La 2O 3为1∶1-10∶1；
所述成核剂包括P 2O 5、TiO 2、Nb 2O 5中的至少一种；
所述添加剂包括CaO、BaO、MgO、SrO、B 2O 3、Y 2O 3、La 2O 3、Bi 2O 3、SnO 2、TiO 2、GeO 2、Nb 2O 5、WO 3、MoO 3、Tb 4O 7中的至少一种；
所述着色剂包括黄色着色剂、红色着色剂、灰色着色剂；
所述荧光剂包括Er 2O 3、Nd 2O 5、Tm 2O 3、Sm 2O 3、Eu 2O 3、Dy 2O 3、Yb 2O 3、Ho 2O 3中的至少两种。
本申请的第二方面提供一种本申请所述的硅酸锂玻璃陶瓷的制备方法，其包括以下步骤：
(1)将原始组分混合均匀，在1300℃-1600℃下加热30min-120min后进行水淬，得到熔块；
(2)将熔块在1300℃-1600℃下加热30min-120min后倒入模具中成型，得到瓷块；
(3)将瓷块在600℃-1000℃下进行热处理，得到硅酸锂玻璃陶瓷。
本申请的第三方面提供一种本申请所述的硅酸锂玻璃陶瓷的制备方法，其包括以下步骤：
(1)将原始组分混合均匀，在1300℃-1600℃下加热30min-120min后进行水淬，得到熔块；
(2)将熔块进行研磨，得到平均粒径为1μm-100μm的熔块粉末；
(3)将熔块粉末在100MPa-260MPa进行干压成型，得到生坯；或者，
将熔块粉末在15MPa-100MPa进行干压，然后在100MPa-260MPa下等静压成型得到生坯；
(4)将生坯在真空条件下进行热处理得到硅酸锂玻璃陶瓷，真空度为100Pa-5000Pa，热处理温度为600℃-1000℃。
本申请的第四方面提供一种本申请所述的硅酸锂玻璃陶瓷的制备方法， 其包括以下步骤：
(1)将除了着色剂和荧光剂以外的原始组分混合均匀，在1300℃-1600℃下加热30min-120min后进行水淬，得到熔块；
(2)将熔块进行研磨，得到平均粒径为1μm-100μm的熔块粉末，然后与着色剂和荧光剂进行混合得到混合粉末；
(3)将混合粉末在100MPa-260MPa进行干压成型，得到生坯；或者，
将混合粉末在15MPa-100MPa进行干压，然后在100MPa-260MPa下等静压成型得到生坯；
(4)将生坯在真空条件下进行热处理得到硅酸锂玻璃陶瓷，真空度为100Pa-5000Pa，热处理温度为600℃-1000℃。
本申请第五方面提供一种硅酸锂玻璃陶瓷修复体，根据本申请所述的硅酸锂玻璃陶瓷制得。
本申请提供的硅酸锂玻璃陶瓷，通过调控原始组分中ZnO和La 2O 3的含量，能够降低硅酸锂玻璃陶瓷的软化温度，从而采用压铸法将硅酸锂玻璃陶瓷制备成硅酸锂玻璃陶瓷修复体的压铸温度也较低，具体地，压铸温度为700℃-900℃。得到的硅酸锂玻璃陶瓷修复体表面的粗糙度较小且压铸完全，同时具有较高的强度和良好的透光性。
当然，实施本申请任一实施例的产品或方法并不一定需要同时达到以上所述的所有优点。
具体实施方式
为使本发明的目的、技术方案、及优点更加清楚明白，以下参照实施例，对本发明进一步详细说明。显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本申请提供一种牙科用硅酸锂玻璃陶瓷，其包括以下质量百分含量的原始组分：
Figure PCTCN2022088803-appb-000003
Figure PCTCN2022088803-appb-000004
其中，
ZnO/La 2O 3为1∶1-10∶1，优选为2∶1-8∶1；
成核剂包括P 2O 5、TiO 2、Nb 2O 5中的至少一种，优选为P 2O 5；
添加剂包括CaO、BaO、MgO、SrO、B 2O 3、Y 2O 3、La 2O 3、Bi 2O 3、SnO 2、TiO 2、GeO 2、Nb 2O 5、WO 3、MoO 3、Tb 4O 7中的至少一种；
着色剂包括黄色着色剂、红色着色剂、灰色着色剂；
荧光剂包括Er 2O 3、Nd 2O 5、Tm 2O 3、Sm 2O 3、Eu 2O 3、Dy 2O 3、Yb 2O 3、Ho 2O 3中的至少两种。
优选地，各原始组分的质量百分含量如下：
Figure PCTCN2022088803-appb-000005
本申请提供的硅酸锂玻璃陶瓷，不限于任何理论，通过调控原始组分中ZnO和La 2O 3的含量，能够降低硅酸锂玻璃陶瓷的软化温度，从而采用压铸法将硅酸锂玻璃陶瓷制备成硅酸锂玻璃陶瓷修复体的压铸温度也较低，具体地，软化温度为500℃-560℃，压铸温度为700℃-900℃。得到的硅酸锂玻璃陶瓷修复体表面的粗糙度较小且压铸完全，同时具有较高的强度和良好的透光性。
在本申请中，对硅酸锂玻璃陶瓷的种类没有特别限制，只要能实现本申请目的即可，例如，硅酸锂玻璃陶瓷的种类可以包括但不局限于偏硅酸锂、二硅酸锂等。
在本申请中，原始组分是指在制备硅酸锂玻璃陶瓷时所采用的原始材料组分。原始组分中通常含有铁离子等杂质，会影响硅酸锂玻璃陶瓷的透光度和荧光性能。优选地，本申请的原始组分中铁离子总的质量百分含量小于或等于0.01，避免铁离子过多，降低硅酸锂玻璃陶瓷的透光度。在本申请中，前述铁离子可以是二价铁离子或三价铁离子。“ZnO/La 2O 3为1∶1-10∶1”是指ZnO与La 2O 3的质量比为1∶1-10∶1。硅酸锂玻璃陶瓷的软化温度是指硅酸锂玻璃陶瓷刚呈现熔化时的温度。
在本申请的一种实施方案中，原始组分还可以包括碱金属氧化物，碱金属氧化物的质量百分含量为0.5-7，优选为2-5，碱金属氧化物选自Na 2O、K 2O、Cs 2O、Rb 2O中的至少一种，优选地，碱金属氧化物至少包括K 2O。碱金属氧化物的加入有助于玻璃熔化和玻璃结晶化，降低玻璃熔化温度。
在本申请的一种实施方案中，黄色着色剂可以包括但不限于CeO 2、Pr 2O 3、V 2O 5、锆钒黄、锆镨黄等中的至少一种，红色着色剂可以包括但不限于Er 2O 3、铬锡红、尖晶石红色料等中的至少一种，灰色着色剂可以包括但不限于MnO、NiO、Nd 2O 3等中的至少一种。
本申请还提供一种前述任一方案的硅酸锂玻璃陶瓷的制备方法，其包括以下步骤：
(1)将原始组分混合均匀，在1300℃-1600℃下加热30min-120min后进行水淬，得到熔块；
(2)将熔块在1300℃-1600℃下加热30min-120min后倒入模具中成型，得到瓷块；
(3)将瓷块在600℃-1000℃下进行热处理，优选为650℃-850℃，得到硅酸锂玻璃陶瓷。
上述步骤(1)中的水淬是指将熔化后的原始组分倒入冷水中的处理过程。在上述步骤(2)中，本申请对模具没有特别限制，只要能实现本申请的目的即可，例如，浇铸模具。在上述步骤(3)中，不限于任何理论，当热处理温 度为600℃-1000℃时，得到的硅酸锂玻璃陶瓷具有良好的透光率和强度。在制备硅酸锂玻璃陶瓷时，采用本申请提供的原始组分及原始组分的含量，得到的硅酸锂玻璃陶瓷则具有较低的软化温度、良好的透光率和强度，从而将硅酸锂玻璃陶瓷通过压铸法制成硅酸锂玻璃陶瓷修复体时的压铸温度也较低。具体地，压铸温度为700℃-900℃。
本申请还提供另一种前述任一方案的硅酸锂玻璃陶瓷的制备方法，其包括以下步骤：
(1)将原始组分混合均匀，在1300℃-1600℃下加热30min-120min后进行水淬，得到熔块；
(2)将熔块进行研磨，得到平均粒径为1μm-100μm的熔块粉末，熔块粉末平均粒径优选为2μm-20μm；
(3)将熔块粉末在100MPa-260MPa进行干压成型，得到生坯；或者，
将熔块粉末在15MPa-100MPa进行干压，然后在100MPa-260MPa下等静压成型得到生坯；
(4)将生坯在真空条件下进行热处理得到硅酸锂玻璃陶瓷，真空度为100Pa-5000Pa，优选为500Pa-3000Pa，热处理温度为600℃-1000℃，优选为750℃-850℃。
根据上述制备方法制得的硅酸锂玻璃陶瓷，采用本申请提供的原始组分及原始组分的含量，得到的硅酸锂玻璃陶瓷则具有较低的软化温度、良好的透光率和强度，从而将硅酸锂玻璃陶瓷通过压铸法制成硅酸锂玻璃陶瓷修复体时的压铸温度也较低。具体地，压铸温度为700℃-850℃。
在上述制备方法中，步骤(1)中的水淬是指将熔化后的原始组分倒入冷水中的处理过程。在步骤(2)中，本申请对研磨的方式没有特别限制，只要能实现本申请的目的即可，例如，先对熔块进行粗磨，再进行细磨。在步骤(4)中，不限于任何理论，热处理的真空度为100Pa-5000Pa、温度为600℃-1000℃，有利于提高硅酸锂玻璃陶瓷的透光率和强度。
在本申请中干压成型是指将熔块粉末装入模具中，在压力机上加压，使粉末在模具内相互靠近，并借助内摩擦力牢固地结合，形成一定形状的坯体。在本申请中等静压成型是指将待压试样置于高压容器中，利用液体介质从各 个方向对试样进行均匀加压，形成一定形状的坯体。本申请对压力机和高压容器没有特别限制，可以是本领域已知的压力机和高压容器，只要能实现本申请的目的即可。
本申请还提供再一种前述任一方案的硅酸锂玻璃陶瓷的制备方法，其包括以下步骤：
(1)将除了着色剂和荧光剂以外的原始组分混合均匀，在1300℃-1600℃下加热30min-120min后进行水淬，得到熔块；
(2)将熔块进行研磨，得到平均粒径为1μm-100μm的熔块粉末，然后与着色剂和荧光剂进行混合得到混合粉末；
(3)将混合粉末在100MPa-260MPa进行干压成型，得到生坯；或者，
将混合粉末在15MPa-100MPa进行干压，然后在100MPa-260MPa下等静压成型得到生坯；
(4)将生坯在真空条件下进行热处理得到硅酸锂玻璃陶瓷，真空度为100Pa-5000Pa，热处理温度为600℃-1000℃。
根据上述制备方法制得的硅酸锂玻璃陶瓷，采用本申请提供的原始组分及原始组分的含量，得到的硅酸锂玻璃陶瓷则具有较低的软化温度、良好的透光率和强度，从而将硅酸锂玻璃陶瓷通过压铸法制成硅酸锂玻璃陶瓷修复体时的压铸温度也较低。具体地，压铸温度为700℃-850℃。
在上述制备方法的步骤(4)中，不限于任何理论，热处理的真空度为100Pa-5000Pa、温度为600℃-1000℃，有利于提高硅酸锂玻璃陶瓷的透光率和强度。
本申请还提供一种硅酸锂玻璃陶瓷修复体，采用本申请提供的硅酸锂玻璃陶瓷制得。本申请对硅酸锂玻璃陶瓷制备硅酸锂玻璃陶瓷修复体的方法没有特别限制，只要能实现本申请的目的即可。例如，压铸法。
具体地，压铸法可以包括但不局限于以下步骤：先制备修复体的蜡型，然后用包埋料包埋修复体蜡型，固化得到包埋圈，对包埋圈加热使蜡型熔融并挥发后放入压铸炉中，再将硅酸锂玻璃陶瓷放入包埋圈中对硅酸锂玻璃陶瓷进行压铸，得到硅酸锂玻璃陶瓷修复体。其中，压铸温度为700℃-900℃。本申请对包埋料没有特别限制，只要能实现本申请的目的即可，例如，包埋 料为磷酸盐。此外，由于压铸温度较低，有利于减小硅酸锂玻璃陶瓷修复体的表面粗糙度，具体地，硅酸锂玻璃陶瓷修复体的表面粗糙度不大于0.55μm。
实施例1
按照表1中的配方1，将各组分充分混合均匀后放入铂金坩埚中，将铂金坩埚放入加热炉内，控制加热温度为1300℃，加热时间为120min，使各组分熔融并均化，随后倒入冷水中，得到熔块。将熔块在1300℃下加热120min熔融，然后浇铸到模具中成型得到瓷块。将瓷块在箱式炉中进行热处理，热处理温度为850℃，热处理时间为2h，得到二硅酸锂玻璃陶瓷。然后，通过压铸法将二硅酸锂玻璃陶瓷制成二硅酸锂玻璃陶瓷修复体，压铸温度为900℃。
实施例2
按照下表1中配方2，将各组分充分混合均匀后放入铂金坩埚中，将铂金坩埚放入加热炉内，控制加热温度为1600℃，加热时间为30min，使各组分熔融并均化，随后倒入冷水中，得到熔块。将熔块经过粗磨和细磨，使平均粒径D50为20μm，得到熔块粉末。将熔块粉末放入模具中，在15MPa下先进行干压，再在260MPa下等静压成型得到生坯。将生坯在真空气氛炉中进行热处理，真空度为3000Pa，热处理温度850℃，热处理时间为2h，得到二硅酸锂玻璃陶瓷。然后，通过压铸法将二硅酸锂玻璃陶瓷制成二硅酸锂玻璃陶瓷修复体，压铸温度为700℃。
实施例3
按照下表1中配方3，先将除了锆镨黄、锆钒黄、铬锡红、Nd 2O 5以外的组分充分混合均匀后放入铂金坩埚中，将铂金坩埚放入加热炉内，控制加热温度为1500℃，加热时间为60min，使各组分熔融并均化，随后倒入冷水中，得到熔块。将熔块经过粗磨和细磨，使平均粒径D50为5μm，得到熔块粉末。再将熔块粉末与锆镨黄、锆钒黄、铬锡红、Nd 2O 5充分混合均匀后放入模具中，在25MPa下先进行干压，再在100MPa下等静压成型得到生坯。将生坯在真空气氛炉中进行热处理，真空度为500Pa，热处理温度750℃，热处理时间为2h，得到二硅酸锂玻璃陶瓷。然后，通过压铸法将二硅酸锂玻璃陶瓷制成二硅酸锂玻璃陶瓷修复体，压铸温度为700℃。
实施例4
按照下表1中配方4，先将除了Pr 2O 3、V 2O 5、Er 2O 3、Nd 2O 5以外的组分充分混合均匀后放入铂金坩埚中，将铂金坩埚放入加热炉内，控制加热温度为1400℃，加热时间为90min，使各组分熔融并均化，随后倒入冷水中，得到熔块。将熔块经过粗磨和细磨，使平均粒径D50为5μm，得到熔块粉末。再将熔块粉末与Pr 2O 3、V 2O 5、Er 2O 3、Nd 2O 5充分混合均匀后放入模具中，在25MPa下先进行干压，再在260MPa下等静压成型得到生坯。将生坯在真空气氛炉中进行热处理，真空度为3000Pa，热处理温度750℃，热处理时间为2h，得到二硅酸锂玻璃陶瓷。然后，通过压铸法将二硅酸锂玻璃陶瓷制成二硅酸锂玻璃陶瓷修复体，压铸温度为800℃。
实施例5
按照表1中的配方5，将各组分充分混合均匀后放入铂金坩埚中，将铂金坩埚放入加热炉内，控制加热温度为1300℃，加热时间为120min，使各组分熔融并均化，随后倒入冷水中，得到熔块。将熔块在1300℃下加热120min熔融，然后浇铸到模具中成型得到瓷块。将瓷块在箱式炉中进行热处理，热处理温度为850℃，热处理时间为2h，得到二硅酸锂玻璃陶瓷。然后，通过压铸法将二硅酸锂玻璃陶瓷制成二硅酸锂玻璃陶瓷修复体，压铸温度为750℃。
实施例6
按照下表1中配方6，将各组分充分混合均匀后放入铂金坩埚中，将铂金坩埚放入加热炉内，控制加热温度为1600℃，加热时间为30min，使各组分熔融并均化，随后倒入冷水中，得到熔块。将熔块经过粗磨和细磨，使平均粒径D50为20μm，得到熔块粉末。将熔块粉末放入模具中，在15MPa下先进行干压，再在100MPa下等静压成型得到生坯。将生坯在真空气氛炉中进行热处理，真空度为1500Pa，热处理温度850℃，热处理时间为2h，得到二硅酸锂玻璃陶瓷。然后，通过压铸法将二硅酸锂玻璃陶瓷制成二硅酸锂玻璃陶瓷修复体，压铸温度为800℃。
实施例7
按照下表1中配方7，先将除了锆镨黄、锆钒黄、尖晶石红、NiO以外的组分充分混合均匀后放入铂金坩埚中，将铂金坩埚放入加热炉内，控制加热温度为1600℃，加热时间为30min，使各组分熔融并均化，随后倒入冷水中， 得到熔块。将熔块经过粗磨和细磨，使平均粒径D50为5μm，得到熔块粉末。再将熔块粉末与锆镨黄、锆钒黄、尖晶石红、NiO充分混合均匀后放入模具中，在260MPa下先进行干压成型得到生坯。将生坯在真空气氛炉中进行热处理，真空度为2000Pa，热处理温度700℃，热处理时间为2h，得到二硅酸锂玻璃陶瓷。然后，通过压铸法将二硅酸锂玻璃陶瓷制成二硅酸锂玻璃陶瓷修复体，压铸温度为750℃。
实施例8
按照表1中的配方8，将各组分充分混合均匀后放入铂金坩埚中，将铂金坩埚放入加热炉内，控制加热温度为1300℃，加热时间为40min，使各组分熔融并均化，随后倒入冷水中，得到熔块。将熔块在1300℃下加热40min熔融，然后浇铸到模具中成型得到瓷块。将瓷块在箱式炉中进行热处理，热处理温度为800℃，热处理时间为2h，得到二硅酸锂玻璃陶瓷。然后，通过压铸法将二硅酸锂玻璃陶瓷制成二硅酸锂玻璃陶瓷修复体，压铸温度为700℃。
实施例9
除了将配方6替换成表1中的配方9以外，其余与实施例6相同。
实施例10
除了将配方2替换成表1中的配方10、压铸温度为850℃以外，其余与实施例2相同。
对比例1
除了将配方8替换成表1中的配方11、压铸温度为910℃以外，其余与实施例8相同。
对比例2
除了将配方7替换成表1中的配方12、压铸温度为910℃以外，其余与实施例7相同。
表1
Figure PCTCN2022088803-appb-000006
Figure PCTCN2022088803-appb-000007
Figure PCTCN2022088803-appb-000008
注：表1中各物质的含量为质量百分含量，“-”表示配方中不存在对应的物质。
测试方法和设备：
软化温度测试：
采用热膨胀仪，根据标准ISO6872-2015《Dentistry.Ceramic materials》(《牙科.陶瓷材料》)测试玻璃陶瓷的软化温度。
压铸测试：
采用法国UGIN压铸炉进行压铸测试，设置压力为1.5bar、压铸时间为3min，压铸温度为各实施例或对比例中的压铸温度。重复压铸10个牙冠，统计压铸不全的个数。
表面粗糙度测试：
采用Waveline(德国业纳)便携式粗糙度仪对玻璃陶瓷修复体的粗糙度进行测量，扫描长度为1.5mm，扫描速度为0.15mm/s。
强度测试：
采用万能材料试验机，根据标准ISO6872-2015《Dentistry.Ceramic materials》(《牙科.陶瓷材料》)测试玻璃陶瓷修复体的弯曲强度。
透光率测试：
采用分光光度计(Perkin Elmer Lambda 900)根据标准GBT2680-1994《建筑玻璃——可见光透射比、太阳光直接透射比、太阳能总透射比、紫外线透射比及有关窗玻璃参数的测定》测量玻璃陶瓷修复体的透光率。
各实施例和对比例中二硅酸锂玻璃陶瓷修复体的相关参数和性能对比如表2所示：
表2
Figure PCTCN2022088803-appb-000009
从表2数据可以看出，实施例1-10得到的二硅酸锂玻璃陶瓷的软化温度、以及二硅酸锂玻璃陶瓷修复体的压铸温度和表面粗糙度均小于对比例1和2，且实施例1-10中的二硅酸锂玻璃陶瓷修复体均为完全压铸得到的，而对比例1和2中存在压铸不完全的情况。说明采用本申请提供的硅酸锂玻璃陶瓷制得的硅酸锂玻璃陶瓷修复体的表面粗糙度小、能够被完全压铸且压铸温度低。此外，实施例1-10中的二硅酸锂玻璃陶瓷修复体均具有良好的透光率和弯曲强度。而对比例1中的二硅酸锂玻璃陶瓷修复体的弯曲强度虽然较高，但透光率低；对比例2中的二硅酸锂玻璃陶瓷修复体的透光率虽然较高，但弯曲强度过低，均不能同时满足对强度和透光率的要求。从而说明，采用本申请提供的硅酸锂玻璃陶瓷制得的硅酸锂玻璃陶瓷修复体还同时具有高的透光率和弯曲强度。
从实施例7和对比例2可以看出，虽然配方中的原始组分接近，但是两者的软化温度、压铸温度和表面粗糙度差异较大，且实施例7中的二硅酸锂 玻璃陶瓷修复体为完全压铸得到的，而对比例2中存在压铸不完全的情况。从而说明，只要硅酸锂玻璃陶瓷的原始组分在本申请的范围内，就能有效降低硅酸锂玻璃陶瓷的软化温度，从而降低制备硅酸锂玻璃陶瓷修复体时的压铸温度，以及硅酸锂玻璃陶瓷修复体的表面粗糙度，而且在压铸过程中能够被压铸完全。
从实施例8和对比例1可以看出，配方中的原始组分相同，但原始组分的含量不同，从而两者的软化温度、压铸温度和表面粗糙度差异较大，且实施例8中的二硅酸锂玻璃陶瓷修复体为完全压铸得到的，而对比例2中存在压铸不完全的情况。从而说明，只要硅酸锂玻璃陶瓷的原始组分和原始组分的含量在本申请的范围内，就能有效降低硅酸锂玻璃陶瓷的软化温度，从而降低制备硅酸锂玻璃陶瓷修复体的压铸温度，以及硅酸锂玻璃陶瓷修复体的表面粗糙度，而且在压铸过程中能够被压铸完全。
需要说明的是，在本文中，术语“包括”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的方法或者物品不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种方法或者物品所固有的要素。
本说明书中的各个实施例均采用相关的方式描述，各个实施例之间相同相似的部分互相参见即可，每个实施例重点说明的都是与其它实施例的不同之处。
以上所述仅为本申请的较佳实施例，并非用于限定本申请的保护范围。凡在本申请的精神和原则之内所作的任何修改、等同替换、改进等，均包含在本申请的保护范围内。
以上所述仅为本申请的较佳实施例，并不用以限制本申请，凡在本申请的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本申请保护的范围之内。

Claims (11)

  1. 一种牙科用硅酸锂玻璃陶瓷，其包括以下质量百分含量的原始组分：
    Figure PCTCN2022088803-appb-100001
    其中，
    ZnO/La 2O 3为1∶1-10∶1；
    所述成核剂包括P 2O 5、TiO 2、Nb 2O 5中的至少一种；
    所述添加剂包括CaO、BaO、MgO、SrO、B 2O 3、Y 2O 3、La 2O 3、Bi 2O 3、SnO 2、TiO 2、GeO 2、Nb 2O 5、WO 3、MoO 3、Tb 4O 7中的至少一种；
    所述着色剂包括黄色着色剂、红色着色剂、灰色着色剂；
    所述荧光剂包括Er 2O 3、Nd 2O 5、Tm 2O 3、Sm 2O 3、Eu 2O 3、Dy 2O 3、Yb 2O 3、Ho 2O 3中的至少两种。
  2. 根据权利要求1所述的硅酸锂玻璃陶瓷，其中，各原始组分的质量百分含量如下：
    Figure PCTCN2022088803-appb-100002
  3. 根据权利要求1所述的硅酸锂玻璃陶瓷，其中，所述原始组分还包括 碱金属氧化物，所述碱金属氧化物的质量百分含量为0.5-7，所述碱金属氧化物选自Na 2O、K 2O、Cs 2O、Rb 2O中的至少一种。
  4. 根据权利要求1所述的硅酸锂玻璃陶瓷，其中，所述黄色着色剂包括CeO 2、Pr 2O 3、V 2O 5、锆钒黄、锆镨黄中的至少一种，所述红色着色剂包括Er 2O 3、铬锡红、尖晶石红色料中的至少一种，所述灰色着色剂包括MnO、NiO、Nd 2O 3中的至少一种。
  5. 根据权利要求1-4中任一项所述的硅酸锂玻璃陶瓷，其中，所述硅酸锂玻璃陶瓷的软化温度为500℃-560℃。
  6. 一种根据权利要求1-5中任一项所述的硅酸锂玻璃陶瓷的制备方法，其包括以下步骤：
    (1)将原始组分混合均匀，在1300℃-1600℃下加热30min-120min后进行水淬，得到熔块；
    (2)将熔块在1300℃-1600℃下加热30min-120min后倒入模具中成型，得到瓷块；
    (3)将瓷块在600℃-1000℃下进行热处理，得到硅酸锂玻璃陶瓷。
  7. 一种根据权利要求1-5中任一项所述的硅酸锂玻璃陶瓷的制备方法，其包括以下步骤：
    (1)将原始组分混合均匀，在1300℃-1600℃下加热30min-120min后进行水淬，得到熔块；
    (2)将熔块进行研磨，得到平均粒径为1μm-100μm的熔块粉末；
    (3)将熔块粉末在100MPa-260MPa进行干压成型，得到生坯；或者，
    将熔块粉末在15MPa-100MPa进行干压，然后在100MPa-260MPa下等静压成型得到生坯；
    (4)将生坯在真空条件下进行热处理得到硅酸锂玻璃陶瓷，真空度为100Pa-5000Pa，热处理温度为600℃-1000℃。
  8. 一种根据权利要求1-5中任一项所述的硅酸锂玻璃陶瓷的制备方法，其包括以下步骤：
    (1)将除了着色剂和荧光剂以外的原始组分混合均匀，在1300℃-1600℃下加热30min-120min后进行水淬，得到熔块；
    (2)将熔块进行研磨，得到平均粒径为1μm-100μm的熔块粉末，然后与着色剂和荧光剂进行混合得到混合粉末；
    (3)将混合粉末在100MPa-260MPa进行干压成型，得到生坯；或者，
    将混合粉末在15MPa-100MPa进行干压，然后在100MPa-260MPa下等静压成型得到生坯；
    (4)将生坯在真空条件下进行热处理得到硅酸锂玻璃陶瓷，真空度为100Pa-5000Pa，热处理温度为600℃-1000℃。
  9. 一种根据权利要求1-5中任一项所述的硅酸锂玻璃陶瓷制得的硅酸锂玻璃陶瓷修复体。
  10. 根据权利要求9所述的硅酸锂玻璃陶瓷修复体，其中，所述硅酸锂玻璃陶瓷修复体是将所述硅酸锂玻璃陶瓷通过压铸法制得，压铸温度为700℃-900℃。
  11. 根据权利要求9所述的硅酸锂玻璃陶瓷修复体，其中，所述硅酸锂玻璃陶瓷修复体的表面粗糙度不大于0.55μm。
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