Bases and liners
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What are we trying to protect the pulp from?
- Chemical irritation
- Biologic (bacteria & saliva)
- Thermal changes
- Electrical protection
- Mechanical Injury
Define a Palliative
- Soothing effect on a tooth
- Relieves pain
- Not a cure
Glass Ionomer cement is best suited for what cavity classification?
- Class V (along gum lines)
- Class III (doesn't polish well)
Which cement will cobweb when working time has expired?
Enamel is etched with what type of acid?
What cavity classification require a matrix?
- Class II- Posterior-toffelmire #19DO
- Class III- Anterior- strip wedge #9M
- Class IV #9 MI
What is the purpose of the matrix?
- Restore the natural contours of the tooth
- Replace the missing tooth wall
- Prevent excess material from creating an overhang
Restorative materials are held in place by what type of retention?
Which two cements use chemical bonding for retention?
- Glass Ionomer
Which cement contains fluoride?
Which cement is very acidic?
What is the purpose of a cavity liner?
Protect the pulp from any type of irritation.
On what tooth structure is calcium hydroxide placed?
What does an insulating base do?
- 1.Protect the pulp from thermal changes
- 2.Chemical Irritation
List three characteristic of calcium hydroxide
- Protects the pulp from chemical irritation Produces reparative dentin
- Compatible with all restorative material
- Antibacterial properties
What is the main ingredient in varnish ?
What type of restoration is varnish compatible with?
What effect does eugenol have on the pulp?
Soothing to the Pulp
What is the order that cement is placed in the cavity preparation?
What is the purpose of a sedative dressing?
Calms & Restores the tooth until a permanent filling can be done
What is a universal varnish?
A varnish that does not have organic solvents in it and can be used under any restoration
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