Table 4.

Ideal requirement of removable partial denture

Biological	Should be nontoxic, nonirritant, and noncarcinogenic
Chemical	Should be insoluble in oral fluids or any other fluids being taken by patient
Mechanical	Modulus of elasticity should be high.
	Enables denture base to be rigid against masticatory forces
	Resilience should be high to protect underlying soft tissues by absorbing masticatory forces
	Should have a high elastic limit and proportional limit to prevent permanent deformation when stressed
	Should have adequate mechanical strength to resist fracture under repeated masticatory forces
	Should be dimensionally stable
	Should have adequate abrasion resistance
Thermal	Should be the good thermal conductor
Esthetic	Should exhibit sufficient translucency so that it can be made to match appearance of tissues
Others	Should maintain desirable properties for extended periods after manufacture
	Should be inexpensive
	Should be easy to repair
	Should be easy to clean
	Should have longer shelf life