GIC

Question 1

Due to GIC being versatile how can it be applied in dentistry - 6

Answer 1

1. restorations
2. luting cement
3. bonding/conditioning
4. protection - therapeutic property releasing fluoride
5. fissure sealing
6. protection of root surface against caries

Question 2

4 Properties of GIC

Answer 2

Good biocompatibility
Chemical cure with no shrinkage stress
self-adhesion to enamel and dentine
water based so less demand for moisture control

Question 3

How long can GIC hardening take?

Answer 3

Over 1 week

Question 4

Why is mixing capsules better than hand mixing?

Answer 4

To avoid making mistakes that occur at wrong ratio.

Question 5

What type of system are GICs

Answer 5

Aqueous systems (water is essential for reaction to take place)

Question 6

Water in GIC allows for… list 3

Answer 6

ion transport
fluoride release
acid-base setting reaction

Question 7

What does conditioning the tooth do before placing GIC

Answer 7

removal of smear layer and partial demineralisation of the tooth which increases surface area and allows micro-mechanical attachment

Question 8

GIC adheres to tooth enamel and dentine via an ….. ……… mechanism

Answer 8

ion exchange

Question 9

Therapeutic action of GIC

Answer 9

fluoride release

Question 10

Disadvantages of GIC, LIST 2

Answer 10

low fracture resistance
susceptible to early water contamination

Question 11

GI restorations are water-soluble but can be at risk if excessive consumption of certain drinks due to pH such as

Answer 11

orange juice
coffee
coca cola
apple juice
wine