Deck 1

Question 1

Biomaterial

Answer 1

used to make devices to replace/repair a function of the body in a safe, reliable, economic, and physiologically acceptable manner.

Question 2

General uses

Answer 2

Prosthesis - cardio, ortho, ophthalmological

Interventions: sutures, adhesives, drug release

Question 3

Biocompatibility

Answer 3

ability of a material to perform with an appropriate host response in a specific application.

Question 4

Third Gen. materials

Answer 4

regenerate functional tissue

Question 5

Second Gen. material

Answer 5

Bioactivity: resorbable, bone bonding, drug release

Ex. PLA, polymers

Question 6

First Gen. material

Answer 6

Bioinertness: minimal reaction/interaction

Ex. silicone-rubber

Question 7

Classes of materials

Answer 7

Polymers
Metals
Ceramics
Composites

Question 8

Stent materials

Answer 8

SS, nitinol or NiTi alloy, CoCr alloy

Question 9

Hip materials

Answer 9

Ti6Al4V, CoCr, CoCrMo, OHMWPE, ceramics

Question 10

Dental materials

Answer 10

cpTi, metal alloys, ceramics, polymers

Question 11

4 attractive forces

Answer 11

Gravity
Weak Nuclear
Strong Nuclear
Electromagnetic (Most important)

Question 12

Electromagnetic forces

Answer 12

Weak are liquids and strong are solids.

Question 13

Electromagnetic force types

Answer 13

Van der Waals
Ionic
Hydrogen
Metallic
Covalent

Question 14

Metallic EM force

Answer 14

Attractive force between a “sea” of positively charged atoms and delocalized e-

Question 15

Types of bonds

Primary v. Secondary

Answer 15

Primary: Covalent, Ionic, Metallic

Secondary: Van der Waals, H+, Dipole

Question 16

Metallic v. Ionic magnetism

Answer 16

M. is positive

I. is negative

Question 17

Surface properties

Answer 17

dictates interactions between a material and its environment

Question 18

Bulk properties

Answer 18

internal structure, mechanical properties, thermal and optical properties

Question 19

Microstructure

Answer 19

How atoms and molecules are arranged.

Question 20

Processing types
(3)

Answer 20

Annealing
Heating
Quenching

Question 21

Young’s modulus

Answer 21

Slope

Question 22

Ultimate tensile strength

Answer 22

Acceptrable permanent deformation is acceptable
UTS
Highest point
Hardness (1)

Question 23

Yield strength

Answer 23

Stress at which noticeable plastic strain occurs
Failure is when it is exceeded
End of slope, beginning of curve
Resilience

Question 24

Breaking strength

Answer 24

Limit of graph

Question 25

Ductility

Answer 25

amount of plastic strain required to break the material

Question 26

Hardness

Answer 26

How successful a material resists plastic deformation

Question 27

Resilience

Answer 27

Elastic energy that can be stored in a unit of volume of stressed material

Question 28

Toughness

Answer 28

Energy required to deform a unit volume of material to its breaking point