FIELD: medicine.
SUBSTANCE: metal frame is made of valve metals. It is cleaned and processed. A ceramic layer min. 50 mcm thick is formed on the metal frame by micro-arch oxydation in a water electrolyte solution of aluminium sulphate; the frame is then glazed, and the denture is thermally processed in vacuum at temperatures not exceeding allotropic transformation temperatures in the metal frame, but no more than 830°C, for a hold up time of min 15 minutes. A temperature rise rate shall not exceed 15°C/min, whereas a cool down rate is no more than 7°C/min, while the ceramic layer relates to total coating thickness as 0.6 - 0.8.
EFFECT: by producing the metal-ceramic structures having the desired physical properties and high strength characteristics, the method enables producing the dentures at lower labour intensity, high quality, reliability and aesthetic characteristics.
20 dwg, 10 tbl, 1 ex
| Title | Year | Author | Number |
|---|---|---|---|
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|
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| METHOD OF MANUFACTURING METAL-CERAMIC DENTAL PROSTHESES | 2010 |
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