Please enable JavaScript.
Coggle requires JavaScript to display documents.
DENTAL PORCELAIN - Coggle Diagram
DENTAL PORCELAIN
-
It is made up of
and feldspar
mineral consisting of
aluminosilicates of potassium, barium, calcium and sodium)
-
silica
dioxide form of silicon hard,unreactive, colourless compound
-
its aesthetic properties,
-
to get a mass that is fritted,that is quenched in water (to cool it
rapidly).
-
alloy has to stand the masticatory stress without distorting,the melting point must be higher than that of porcelain,
the expansion rate close to that of porcelain to avoid internal tension or micro-fractures on cooling.
necessary a satisfactory formation of oxides to increase adhesion between thesupport and the aesthetic layers.