Cavity Varnishes & Liners Flashcards
1
Q
Why should the varnish NOT be used under a resin or composite rest material?
A
Varnishes interfere with the polymerization of resins & composites
2
Q
If you’re using a base, when should you place the varnish?
A
After the base of Calcium Hydroxide if placed (CAHO2/Dycal)
Before if Zinc Phospate is used (ZNPO4)
3
Q
Who may apply a cavity varnish and what type of supervision is required?
A
RDA w/ direct supervision
4
Q
Why does varnish then sticky and lose its liquid consistency?
A
Varnish evaporates in prolong exposure to air
Use a varnish thinner or solvent to re-establish
5
Q
What is the purpose of a cavity varnish/ liner?
A
To line/coat the cavity prep to seal the dental tubules from Mercury in Amalgam & cement acid
