DENT 1200 DENT 1200 Dental Dental

Materials IMaterials IL2 Glass IonomerL2 Glass Ionomer

1. 4 Types and Uses1. 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

2. Composition2. 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

3. Forms3. Forms• P&L• 2 Paste• Capsule

Perm rest=capsule

4. Advantages & 4. Advantages & Disadvantages of GIDisadvantages of GI

• F• Bond to enamel• Strong in thin layer• Less soluble• TOOTH DOES NOT

HAVE TO BE COMPLETELY DRY

• Irritating to gingival tissue

• cost

5. Mix, Place, Post op5. 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)

Cost? $4/eaCost? $4/ea

VocabVocab

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

Undercut-mechanical Undercut-mechanical retentionretention

• Not needed with composite or GI

My FamilyMy Family