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BMEN Exam 2 > Biomaterials > Flashcards

Biomaterials Flashcards

1
Q

What is a biomaterial

A

A material that is able to perform and not just reside within the body

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2
Q

What governs a materials choice?

A

Bulk properties: matched those of natural organs EX: mechanical, optical, and chemical

Ability to process

Federal Regulations

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3
Q

Bulk Properties- physical

A

strength, elasticity, and architecture

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4
Q

Bulk Properties- chemica

A

degradability, toxicity, water content

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5
Q

Bulk Properties- biological

A

motifs the cell recognizes
release of soluble components

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6
Q

Metals

A

Long bearing
High tensile, fatigue, and yield strengths
Low reactivity
orthopedics, dentistry

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7
Q

Ceramics

A

-contain metallic and nonmetallic elements, ionic and covalent bonding
-occur as minerals
orthopedics, dentistry

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8
Q

Polymers

A

soft tissues

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9
Q

Natural

A

natural substances

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10
Q

Composites

A

A composite material incorporates the desired characteristics of
different materials to meet the stringent demands of living tissue

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11
Q

3 main categories for metals for orthopedic impants

A

stainless steel

alloys

Metallic foam

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12
Q

Ceramic advantages and disadvantages

A

advantages- bioactive, high wear resistance, high modulus, fine esthetic properties

disadvantages: brittle, low tensile strength, and poor fatigue resistance

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13
Q

Porous ceramics

A

Low strength but useful for coatings of metallic implants

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14
Q

Polymers

A

Variety of mechanical properties
-hydrophilic, hydrophobic, synthetic, biostable, biodegradable

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15
Q

Composites

A

incorporates the desired characteristics of different materials to meet the stringent demands of living tissue.

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16
Q

PEG

A

great bioinert material

17
Q

Example of a polymer

A

collagen

18
Q

example of a composite

A

reinforced plastics

19
Q

example of a natural

A

glucose

20
Q

example of a ceramic

A

silicon or alumina

21
Q

example of a metal

A

stainless steel

22
Q

What is biocompatible?

A

-Appropriate immune
response.
-Can be inert or specifically
interactive.
- Similar properties to the
system it is meant to mimic.
- Sterilizable, processable,
non-thrombogenic

23
Q

PTFE

A

hydrophobic, high contact angle

24
Q

glass

A

hydrophilic, low contact angle

BMEN Exam 2 (6 decks)

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