1. DENT 1200 Dental Materials I
L2 Glass Ionomer

2. 1. 4 Types and Uses Type I- perm luting prosth and ortho
Type II- perm restoration
Type III- liner and bonding
Type IV- metal modified, build up

3. 2. Composition Powder- zinc oxide, aluminum oxide, calcium, F
( If metal modified- add silver and tin to powder) NO MERCURY
Liquid-acrylic acid and other acids
polyacrylic acid- can be used in place of conditioner to remove smear layer

4. 3. Forms
P&L
2 Paste
Capsule
Perm rest=capsule

5. 4. Advantages & Disadvantages of GI
Bond to enamel
Strong in thin layer
Less soluble
TOOTH DOES NOT HAVE TO BE COMPLETELY DRY
Irritating to gingival tissue
cost

6. 5. Mix, Place, Post op Activate capsule Triturate capsule for 10 sec
Place capsule in applicator- click 3 times
Pass to DR
Post op- be careful if numb, may be sensitive to temp (cold)

7. Cost? $4/ea

8. Vocab
Core build up- put GI in tooth before crown prep because not enough tooth is left to cement a crown onto

9. Undercut-mechanical retention
Not needed with composite or GI

10. My Family