Complete set of titanium ceramic powder for dental department and preparation method thereof

Abstract

The invention discloses a complete set of a titanium ceramic powder for a dental department and a preparation method thereof. The titanium ceramic powder comprises bonded ceramic powder, color-masking ceramic powder and body ceramic powder. The bonded ceramic powder comprises the following components in percentage by weight: 50-55 percent of SiO2, 5-10 percent of Al2O3, 8-15 percent of B2O3, 10-15 percent of SnO2, 0-1 percent of CaO, 1-3 percent of ZrO2, 4-10 percent of Na2O, 5-8 percent of K2O, 0-1 percent of Li2O, 1-4 percent of BaO and 0-1 percent of F; the color-masking ceramic powder comprises 50-60 percent of SiO2, 3-10 percent of Al2O3, 0.5-1 percent of CaO, 20-30 percent of SnO2, 0-1 percent of TiO2, 0.5-1 percent of ZrO2, 7-10 percent of Na2O, 5-8 percent of K2O and 0.5-4 percentof BaO; and the body ceramic powder comprises 60-70 percent of SiO2, 4-10 percent of Al2O3, 0.5-1 percent of CaO, 1-5 percent of B2O3, 5-10 percent of Na2O, 5-10 percent of K2O, 0.5-1 percent of Li2Oand 5-8 percent of BaO. In the titanium ceramic powder, besides the body ceramic powder, a crystal phase is added in the bonded ceramic powder and the color-masking ceramic powder by an intermediate material technology for secondary synthesis process, thereby not only regulating the thermal expansion coefficient of ceramic materials, but also being beneficial to reducing the ceramic temperature and being simultaneously beneficial to improving the bonding strength of titanium and ceramic.

Description

Technical field [0001] The invention relates to a biological material and a preparation method, in particular to a complete set of titanium porcelain powder used in dentistry and a preparation method thereof. Background technique [0002] Since its clinical application, dental porcelain materials have become the main method of dentistry to repair missing teeth due to their good biocompatibility, wear resistance, corrosion resistance, and natural and vivid color. Porcelain material is a composite of metal and ceramic material made by high-temperature baking. It not only has the characteristics of metal material strength, toughness, and edge closeness, but also has realistic ceramic color, corrosion resistance, wear resistance, easy self-cleaning, etc. The advantages have been widely used in the field of oral restoration. [0003] Porcelain-fused-metal (PFM) full crown, also known as metal-fused-metal crown, is a gold-porcelain composite structure that is fused to the metal base cro...

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Problems solved by technology

[0004] The thermal expansion coefficient of pure titanium is 8~10×10 -6 ℃, much lower than gold alloy (14-15×10 -6 ℃) and nickel-chromium alloy (14~15×10 -6 ℃), so the expansion coefficient of ceramic powder used for gold alloy and nickel-chromium alloy does not match that of pure titanium, not only the bonding strength is poor, but also the ceramic layer will be fractured due to tensile stress

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