Composites Flashcards
1
Q
composition of composites
A
- Filler particles
- Matrix
- Coupling Agent
2
Q
filler particles
A
quartz
silica
barium
ceramics
3
Q
Matrix
A
BIS-GMA- Bisphenol A Glycidyl Methacrylate; most common
UEDMA- Urethane Dimethacrylate
TEGDMA- Triethylene glycol dimethacrylate
4
Q
binds filler to matrix
A
Coupling agent
5
Q
10-100 mcm
1st composites
low polishability
strong physical properties
A
Macrofills
6
Q
0.04-0.1 mcm
High polishability
weak physical properties
A
Microfills
7
Q
1-3 mcm
decrease polishability & has improved physical properies compared to microfills
A
hybrids
8
Q
0.4-0.8 mcm
Good physical properties
High polishability
A
Microhybrids
9
Q
0.7- 20 mcm
Improved Handling Properties
A
Packable composite
10
Q
0.04- 1mcm viscous composites low filler content less rigid excessive polymerizatim shrinkage & wear
A
Flowable composite
11
Q
Most common filler
A
Colloidal silica
