Liners and bases

Question 1

Procedure: indirect pulp capping

Answer 1

Remove all wet and infected dentine, leave only thin layer of caries over pulp.
Disinfect cavity with 2% Chlorhexidine.
Place GIC lingin and seal with composite

Question 2

Procedure: direct pulp capping

Answer 2

Very small pinpoint exposure
Disinfect with 2% Chlorhexidine
Apply Dycal/ Life over exposure
Have to place GIC over it if filling is composite

Question 3

Why?

Answer 3

Prevent inflammation of the pulp
Reduce sensitivity and pain
Prevent bacterial infections after restorations, as bacteria can penetrate to pulp due to microleakage

Question 4

GIC types

Answer 4

Chemfil and Fuji IX- self-setting: 15s in amalgamator
RMGIC (Fuji II) - light-cured: 10s amalgamator
-addition of HEMA and photoinitiator

Question 5

GIC

Answer 5

Base
Used under deep amalgam fillings
Antibacterial properties
Fluoride release
Formed by acid-base reaction

Question 6

Calcium hydroxide (Dycal)

Answer 6

Self-setting
Liner
Used under amalgam not composite
Used in pulp capping
Antibacterial
10s mixing time

Question 7

Zinc oxide eugenol

Answer 7

Kalzinol/ IRM
Commonly used as a temporary
Used in pulp capping
May be used under amalgam not composite
Antibacterial

Question 8

Compomer (Dyract)

Answer 8

Can’t be used with ZOE lining

Either found as tube or capsule on clinic