Production equipment and method for dental all-ceramic restoration
A technology for manufacturing equipment and manufacturing methods, used in dental prostheses, additive manufacturing, manufacturing tools, etc., can solve problems such as complex processes, and achieve the effects of good color and light transmittance, excellent corrosion resistance, and large teeth.
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Embodiment 1
[0050] Manufacture of zirconia dental all-ceramic crowns.
[0051] 1. Configuration of zirconia ceramic slurry:
[0052] 1.1 The electronic balance accurately weighs 60% zirconia powder, 30% deionized water and 10% pore-forming agent starch
[0053] 1.2 Put the zirconia powder, water and pore-forming agent of various mass fractions in a ball mill jar, and ball mill at a speed of 800r / min for 4 hours to obtain a ceramic slurry.
[0054] 2. Forming of zirconia all-ceramic restoration body (see figure 2 and image 3 ):
[0055] 2.1 Firstly, the model of the restoration is designed by 3D CAD software, and then according to the process requirements of the product, the restoration is sliced and layered according to a certain thickness to obtain the 2D cross-sectional information of each layer;
[0056] 2.2 Put the configured zirconia ceramic slurry into the feed box 18 and the extrusion forming head 5, start the air pump 8, and supply the zirconia in the extrusion forming hea...
Embodiment 2
[0071] Fabrication of alumina all-ceramic crowns and bridges.
[0072] First, accurately weigh 50% alumina powder, 30% deionized water, 10% ammonium bicarbonate, 5% wood knot soil and 5% starch with an electronic balance. The alumina powder, water and additives of various mass fractions were placed in a ball mill jar, and ball milled at a speed of 800r / min for 4 hours to obtain a ceramic slurry.
[0073] Put the "3D printed" zirconia body in a drying furnace and dry it at 300°C for 100 minutes; then sinter the dried composite body at 1280°C in a high-temperature sintering furnace to obtain porous alumina ceramics .
[0074] Other steps are identical with embodiment 1.
Embodiment 3
[0076] Fabrication of zirconia-toughened alumina dental all-ceramic triple bridge restorations.
[0077] First, accurately weigh 55% zirconia-toughened alumina powder, 30% deionized water and 15% pore-forming agent with an electronic balance. The alumina powder, water and pore-forming agent of each mass fraction were placed in a ball mill jar, and ball milled at a speed of 800 r / min for 4 hours to obtain a ceramic slurry.
[0078] Put the "3D printed" zirconia body in a drying furnace and dry it at 300°C for 100 minutes; then sinter the dried composite body at 1420°C in a high-temperature sintering furnace to obtain porous alumina ceramics .
[0079] Other steps are identical with embodiment 1.
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Abstract
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