Materials essentially consisting of :-
a) Ceramic Filler (between 65-85%) (variations of Barium Borosilicate)
b) Resin Matrice at the microscopic level makes up the rest (variatons of PGDMA – BisGMA, TEGDMA, UDMA) (Different resin matrices are supposed to increase the strength of the final finished product. Of this UDMA – Urethane Dimethacrylate is supposed to provide the best strength)
c) Pigments are incorporated to create the shades.
All the above materials have minor variations in their parameters as regards :-
a) Strength
b) Flexural resistance
c) Shade availability
d) Shade Stability (This is a major variation and also a cause of concern)
e) Method of polymerization
f) Polymerization Shrinkage.
Few examples are ….. Ceramage ( Shofu), Tescera ( Bisco), Concept HP & SR Adoro ( Ivoclar Vivadent), Sinfony ( 3M), Gradia Indirect ( GC), Cristobal + ( Dentsply), Sculpture ( Pentron), belleGlass ( Kerr ), Estenia ( J.Morita), True Vitality ( Denmat) .
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