Condensation shrinkage of porcelain during firing depends on:
(A) Rate of arriving at firing temperature. (B) Uniformity of particle size. (C) Shape and size of particle. (D) Type of investment used
(C) Firing shrinkage occurs due to loss of water and densification through sintering. It is about 40% by volume. This can be reduced by proper condensation and firing technique. The higher the firing temperature the greater is the firing shrinkage.