1. Liner: Calcium Hydroxide
DA122 Dental Materials

2. Calcium Hydroxide: Trade name: Consistency: Function (Uses):
Cavitec, Dycal, life, preline
Consistency:
Thin and creamy, as it sets, it gets tacky
Once it sets completely, it hardens
Function (Uses):
Direct pulp cap (see next slide)
Indirect pulp cap
Protective barrier under restorations, including composites

3. Pulp Capping-Procedure
Stimulates formation of irregular secondary dentin. An important PROPERTY!
Pulp cap: thick or double layer
of calcium hydroxide liner
Direct: cavity prep almost
enters the pulp of the tooth
Indirect: cavity prep nears the
pulp chamber, but
does not enter it

4. Armamentarium: 4 items needed: Small 1x1 paper pad
Ball point tip instrument
(Dycal instrument)
Used to mix + apply
2x2 gauze square
Supplied as 2 paste system:
Base and catalyst
Equal amounts

5. Mixing information: Ratio: Mix time: Work Time: Set Time: Clean up:
Equal amounts of base and catalyst
Mix time:
10 seconds
Incorporate material into homogeneous color-no streaks, all 1 color
Work Time:
30 seconds
Set Time:
1 ½ -2 minutes
Clean up:
Wipe instrument with gauze, can be flicked off if it dries

6. Mixing information: Mix technique:
Incorporate into homogenous color, using the ball tip applicator to mix
DDS applies calcium hydroxide with the ball tip applicator (Dycal instrument)
Applicator should be sterilized with procedural instruments
Copyright 2012 Porter & Chester Institute, Inc. All rights reserved