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

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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)

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3
Q

Who may apply a cavity varnish and what type of supervision is required?

A

RDA w/ direct supervision

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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

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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

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