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Flashcards in Selection of Dental Biomaterials Deck (14)
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1

Define biomaterial

Any natural or synthetic material that interfaces with living or biological tissues.

2

What are the 3 main systems that materials are dispensed as?

- Powder and liquid
- One-paste (light cured)
- Two-paste

3

What is an advantage of using alginate as a material?

Easy to mix

4

What should we avoid incorporating into material whilst mixing?

Air bubbles

5

Name 2 disadvantages of a powder and liquid system

- May be hard to incorporate all powder
- Hard to avoid air bubbles

6

Name a disadvantage of a two paste system

Hard to avoid air bubbles

7

Name a disadvantage of a one paste system

The material is viscous so it can be difficult to pack into a cavity

8

Name some factors that can affect quality of the set material (4)

- Air bubbles
- Wrong powder:liquid ratio
- Incomplete mixing
- Incorrect mixing time

9

Heat cured materials have what properties?

Optimum physico-mechanical properties

10

Room temperature cured materials have what properties?

Have compromised properties compared with heat cured counterparts

11

Light cured materials have what properties?

Physico-mechanical properties that lie between heat and RT cured materials

12

List the 5 ideal properties of dental materials

- Biocompatible
- Mechanically stable
- Chemically resistant
- Dimensionally stable
- Minimal thermal and electrical conductivity

13

What properties are desirable for an anterior filling material?

- Colour match
- Natural looking in different light conditions
- High compressive strength is not a necessity

14

What properties are desirable for a posterior filling material?

- High compressive strength
- Aesthetics is not a necessity