Biomaterial
any natural / synthetic substance (or combi)
employed to treat / replace tissues, organs or their function
Biocompatability
ability of material to perform with appropriate host response when applied within specific content in body
Toughening mechanisms
1) strong physical bonds
2) heterogeneity
3) strain hardening
4) internal crystal structure
Types of Bonds
1) Covalent
2 atoms share 1 / more pairs of electrons
between non metal atoms (similar electronegativities)
H2O
2) Ionic
electrostatic interaction between oppositely charged ions
NaCl
3) metallic
free electrons in electron cloud are shared
Fe, Cu
4) Hydrogen
Zuletzt geändertvor 3 Monaten