Solution casting vs extrusion - which leads to stronger materials?

From my knowledge experience the casting and extrusion of ceramics, it is due to the concentration of the polymer molecules and the flow regime of the extrusion process. Extensional flow in the extrusion process tends to orientate the polymer molecules more effectively than in casting, but extruded product will tend to have far fewer inclusions and defects than a cast product as a result of the high concentration of the solid particles.