Ceramic fusion is an example of: (A) Liquid phase sintering, (B) Solid phase sintering, (C) Sintering, (D) Oxidation-reduction reaction
Answer is B. The purpose of firing is simply to sinter the particles of powder together properly to form the prosthesis.
Melting temperature of newer alumina ceramic is too high: Hence, liquid phase sintering does not happen.
Particles fuse in solid phase sintering alone.