摘要:
Proposed is a dental blank. The dental blank according to an embodiment of the present disclosure includes: a seating portion provided in an artificial tooth processing apparatus; and a material portion configured to be inserted into the seating portion, wherein the material portion includes a plurality of outer contacting portions in contact with an inner side of the seating portion, and may have a polygonal shape in a cross-section.
摘要:
Proposed is a dental blank. The dental blank according to an embodiment of the present disclosure includes: a seating portion provided in an artificial tooth processing apparatus; and a material portion configured to be inserted into the seating portion, wherein the material portion includes a plurality of outer contacting portions in contact with an inner side of the seating portion, and may have a polygonal shape in a cross-section.
摘要:
Proposed is a dental blank. The dental blank according to an embodiment of the present disclosure includes: a seating portion provided in an artificial tooth processing apparatus; and a material portion configured to be inserted into the seating portion, wherein the material portion includes a plurality of outer contacting portions in contact with an inner side of the seating portion, and may have a polygonal shape in a cross-section.
摘要:
The present invention relates to a silicate glass, a method for preparing a silicate glass-ceramics by using the silicate glass, and a method for preparing a lithium disilicate glass-ceramics by using the silicate glass, and more particularly, to a method for preparing a glass-ceramics that has a nanosize of 0.2 to 0.5 µm and contains lithium disilicate and silicate crystalline phases. A nano lithium disilicate glass-ceramics containing a SiO 2 crystalline phase includes: a glass composition including 70 to 85 wt% SiO 2 , 10 to 13 wt% Li 2 O, 3 to 7 wt% P 2 O 5 working as a nuclei formation agent, 0 to 5 wt% Al 2 O 3 for increasing a glass transition temperature and a softening point and enhancing chemical durability of glass, 0 to 2 wt% ZrO 2 , 0.5 to 3 wt% CaO for increasing a thermal expansion coefficient of the glass, 0.5 to 3 wt% Na 2 O, 0.5 to 3 wt% K 2 O, and 1 to 2 wt% colorants, and 0 to 2.0 wt% mixture of MgO, ZnO, F, and La 2 O 3 .
摘要翻译:本发明涉及一种硅酸盐玻璃,一种使用该硅酸盐玻璃制备硅酸盐玻璃陶瓷的方法以及一种使用该硅酸盐玻璃制备二硅酸锂玻璃陶瓷的方法,更具体地涉及一种制备硅酸盐玻璃的方法, 具有0.2至0.5μm的纳米尺寸并包含二硅酸锂和硅酸盐结晶相的玻璃陶瓷。 包含SiO2结晶相的纳米二硅酸锂玻璃陶瓷包括:包含70至85重量%的SiO2,10至13重量%的Li2O,3至7重量%的用作成核剂的P2O5的玻璃组合物,0至5重量% 用于提高玻璃化转变温度和软化点并提高玻璃的化学耐久性的Al2O3,用于提高玻璃的热膨胀系数的0.5-2重量%的ZrO2,0.5-3重量%的CaO,0.5-3重量%的Na2O, 3重量%的K 2 O和1至2重量%的着色剂,以及0至2.0重量%的MgO,ZnO,F和La 2 O 3的混合物。
摘要:
Disclosed is a dental bulk block for grinding processing. The dental bulk block includes a crystalloid, which includes lithium disilicate as a main crystal phase and silicate as a sub-crystal phase, and hyaline as a remainder. The dental bulk block is a functionally gradient material having a crystalline size gradient according to which the crystalline size continuously increases from a lower end to an upper end of the block. The upper end of the block is configured to form the gingival side of an artificial tooth restoration material and the lower end of the block is configured to form the incisal side of the artificial tooth restoration material. The functionally gradient material has an average particle diameter within a range of 5 nm to 5.5 µm. The dental bulk block is manufactured using a same glass composition, wherein the same glass composition includes 60 to 83 wt% of SiO 2 , 10 to 15 wt% of Li 2 O, 2 to 6 wt% of P 2 O 5 , 1 to 5 wt% of Al 2 O 3 , 0.1 to 3 wt% of SrO, 0.1 to 2 wt% of ZnO, 1 to 5 wt% of a colorant, and 2.5 to 6 wt% of a mixture of Na 2 O and K 2 O.
摘要:
Disclosed is a dental bulk block for grinding processing. The dental bulk block includes a crystalloid, which includes lithium disilicate as a main crystal phase and silicate as a sub-crystal phase, and hyaline as a remainder. The dental bulk block is a functionally gradient material having a crystalline size gradient according to which the crystalline size continuously increases from a lower end to an upper end of the block. The upper end of the block is configured to form the gingival side of an artificial tooth restoration material and the lower end of the block is configured to form the incisal side of the artificial tooth restoration material. The functionally gradient material has an average particle diameter within a range of 5 nm to 5.5 µm. The dental bulk block is manufactured using a same glass composition, wherein the same glass composition includes 60 to 83 wt% of SiO 2 , 10 to 15 wt% of Li 2 O, 2 to 6 wt% of P 2 O 5 , 1 to 5 wt% of Al 2 O 3 , 0.1 to 3 wt% of SrO, 0.1 to 2 wt% of ZnO, 1 to 5 wt% of a colorant, and 2.5 to 6 wt% of a mixture of Na 2 O and K 2 O.
摘要:
Disclosed is a dental bulk block for grinding processing. The dental bulk block includes a crystalloid, which includes lithium disilicate as a main crystal phase and silicate as a sub-crystal phase, and hyaline as a remainder. The dental bulk block is a functionally gradient material having a crystalline size gradient with respect to a depth thereof and having no interface at a change point of a crystalline size gradient value. The dental bulk block is useful for manufacturing an artificial dental prosthesis that is similar to natural teeth. Accordingly, the time and process for manufacturing the artificial dental prosthesis are shortened, and structural stability is increased in terms of dispersion of force due to gradient functionalization of mechanical properties.
摘要:
The present invention relates to a method for preparing a lithium disilicate glass-ceramics containing silicate as a main component, and more particularly, to a method for preparing a glass-ceramics, which is capable of adjusting machinability or translucency according to a crystalline size by using a first heat treatment or a second heat treatment. To this end, a method for preparing a glass-ceramics containing a silica crystalline phase includes: performing a first heat treatment on a glass composition at a temperature of 400 to 850°C, so that a lithium disilicate crystalline phase and a silica crystalline phase each having a size of 5 to 2,000 nm are formed through the first heat treatment. After the first heat treatment, the method further includes performing a second heat treatment at a temperature of 780 to 880°C, so that translucency is adjusted by a temperature of the second heat treatment.
摘要:
A method of bonding a high-strength zirconia post serving as a core in a glass-ceramic block, a method of bonding a metal link fastened with an implant fixture to the zirconia post, and glass-ceramic bondable to the zirconia post and a preparation method thereof, when preparing artificial teeth through a CAD/CAM processing method by using the glass-ceramic block as an artificial-teeth material. The lithium disilicate glass-ceramics containing cristobalite includes a glass-ceramic composition including 10 to 15 wt% Li 2 O, 68 to 76 wt% SiO 2 , 2 to 5 wt% P 2 O 5 working as a nuclei formation agent, 0 to 5 wt% Al 2 O 3 to increase glass transition temperature and softening temperature and increase chemical durability of the glass, 2 to 3 wt% ZrO 2 , 0.5 to 3 wt% CaO for enhancing a thermal expansion coefficient of the glass, 0.5 to 5 wt% Na 2 O, 0.5 to 5 wt% K 2 O, and 1 to 2 wt% colorants, and 0 to 2.0 wt% mixture of MgO, ZnO, F, and La 2 O 3 .
摘要翻译:将作为核心的高强度氧化锆柱粘合在玻璃陶瓷块中的方法,将固定有植入物夹具的金属连接件粘合到氧化锆柱上的方法以及可粘结到氧化锆柱的玻璃陶瓷和制备物 方法,当通过使用玻璃陶瓷块作为人造牙材料通过CAD / CAM处理方法制备人造牙齿时。 含有方英石的二硅酸锂玻璃陶瓷包括玻璃 - 陶瓷组合物,其包含10至15重量%的Li 2 O,68至76重量%的SiO 2,作为核形成剂的2至5重量%的P 2 O 5,0至 5重量%的Al 2 O 3,以提高玻璃化转变温度和软化温度,提高玻璃的化学耐久性,2〜3重量%的ZrO 2,0.5〜3重量%的CaO,以提高玻璃的热膨胀系数,0.5〜5 重量%Na 2 O,0.5〜5重量%K 2 O和1〜2重量%着色剂,0〜2.0重量%的MgO,ZnO,F和La 2 O 3的混合物。