All-ceramic crowns with milled zirconia copings.

Very often patients insist on fabricating a prosthesis made of pressed ceramic. It is so because this prosthesis does not contain metal and helps to achieve perfect aesthetics. Besides, a dental prosthesis is to be a long term one and of high biological compatibility.

The patients' wish to have a non-metal prosthesis can be realized even in the case of extensive bridges and interior or molar teeth prosthetics.

Advanced technology ceramic with milled zirconia copings possesses amazing properties:

• outstanding mechanical properties;
• biological compatibility;
• aesthetic white colour.

When yttrium oxide is added in small quantities, it helps to achieve microstructure changes that increase zirconia solidity. That is why professionals in the sphere of ceramic masses call it “zirconia stabilized with yttrium oxide”.

The main idea of all-ceramic prostheses is that milling (fabricating the frame form) is done when ceramic is soft. Zirconia obtains its strong solidity properties in the process of further firing.

In prosthetics of molars and using of extensive bridge prostheses frames are to be extremely solid. That is why frame made of zirconia are a fine solution of all the problems.

Especially should be mentioned that teeth preparation for zirconia ceramic is not so deep as for other non-metal constructions. It is so because owing to high solidity of zirconia the frame sides may be only 0.4 mm thick. It is of vital importance when prostheses are made on live teeth. Besides, clear white colour of frames covered with special mass allows to achieve high aesthetic results.

Absolutely smooth surface of ceramic promotes sparing and atraumatic attaching to gum.