All-zirconia ceramic dental implant and preparation method thereof
A zirconia ceramic, zirconia technology, applied in dental preparations, dentistry, dental prostheses, etc., can solve the problems of foreign body sensation, gingival recession and bleeding, poor ductility and toughness of zirconia all-ceramic materials, etc. The effect of impact strength
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[0024] The invention provides a method for preparing a full zirconia ceramic dental implant, comprising the following steps:
[0025] Melt the polycarbonate to obtain a homogeneous gel;
[0026] mixing the homogeneous gel with zirconia powder to obtain a homogeneous gel with zirconia;
[0027] Heating the homogeneous gel with zirconia to obtain silky full zirconia short fiber cotton, the heating temperature is 2700-3000°C;
[0028] The silky full zirconia short fiber cotton, zirconia powder and organic binder are sequentially mixed, granulated, injected, degreased and sintered to obtain the full zirconia ceramic dental implant.
[0029] The invention melts polycarbonate (PC) to obtain homogeneous gel. In the present invention, the melting temperature is preferably 220-230°C, more preferably 220°C, and the time is preferably not less than 1 hour. The melting is preferably carried out under the condition of stirring while heating. Stirring can not only accelerate the dissolut...
Embodiment 1
[0050] A manufacturing process for full zirconia ceramic dental implants, comprising the following steps:
[0051] (1) Powder preparation: take zirconia powder as raw material, and grind zirconia into particles with a diameter of 30nm;
[0052] (2) Gel preparation: heat and melt granular polycarbonate in an internal mixer, heat up to 220°C, and stir while heating until the PC is completely molten;
[0053] (3) Mixing: add the zirconia particles in the step (1) to the homogeneous gel prepared in the step (2), stir evenly to obtain a homogeneous gel with zirconia, and the mass ratio of the gel is 15%, zirconia particles are evenly distributed in the gel;
[0054] (4) Filamentation: Pour the homogeneous gel with zirconia in step (3) continuously into a constant temperature container with a leak at the bottom. The temperature of the constant temperature container is 220°C, and a collector is installed under the container . The homogeneous gel with zirconia will continuously flo...
Embodiment 2
[0063] A manufacturing process for full zirconia ceramic dental implants, comprising the following steps:
[0064] (1) Powder preparation: take zirconia powder as a raw material, and grind zirconia into particles with a diameter of 50 nm;
[0065] (2) Gel preparation: heat and melt granular polycarbonate in an internal mixer, heat up to 220°C, and stir while heating until the PC is completely molten;
[0066] (3) Mixing: add the zirconia particles in the step (1) to the homogeneous gel prepared in the step (2), stir evenly to obtain a homogeneous gel with zirconia, and the mass ratio of the gel is 25%, zirconia particles are evenly distributed in the gel;
[0067] (4) Filamentation: Pour the homogeneous gel with zirconia in step (3) continuously into a constant temperature container with a leak at the bottom. The temperature of the constant temperature container is 220°C, and a collector is installed under the container . The homogeneous gel with zirconia will continuously ...
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