What is a Biomaterial ?
• A biomaterial is a nonviable material used in a
medical device, intended to interact with
• Any material of natural or of synthetic origin that
comes in contact with tissue, blood, and
intended for use in diagnostic, therapeutic, or
storage application without adversely affecting
the living organism and its components.
❑To introduce the different biomaterials used in
❑To provide some fundamental properties of
❑And indicate how they are used.
Elastic modulus : Physically, it represents the stiffness of
a material within the elastic range when tensile or
compressive loads are applied.
Hardness :Hardness is defined as the force per unit area
of indentation or penetration.
Fracture toughness :Fracture toughness is required to
alter the crack propagation in ceramics. It is helpful to
evaluate the serviceability, performance and long term
clinical success of biomaterials.
Fatigue :Fatigue is defined as failure of a material
due to repeated/cyclic loading or unloading (tensile
or compressive stresses).