Chapter 59 Dental Sealants

Properly placed dental sealants are _____% effective in protecting against development of caries in sealed surfaces.

• 70

• 80

• 90

• 100

Sealants are indicated for which areas?

• Cervical one third of any tooth

• posterior but not anterior teeth

• the smooth surfaces of teeth, but not pits and fissures

• pits and fissures

Why are sealants contraindicated with proximal decay?

• proximal decay will spread to the occlusal surface

• posterior proximal tooth preparation will usually include the occlusal pits and fissures

• sealants are placed on smooth surfaces and the proximal areas is a smooth surface

• sealants are placed on smooth surfaces and the proximal area is a rough surface

The highest risk period for decay occurs within the first _____ years of eruption

• 3

• 5

• 7

• 9

What is the most common cause of sealant loss?

• use of unfilled material

• use of outdated material

• moisture contamination during placement

• chewing gum or stick candy

The first step in placing dental sealants is to _____ the surface

• etch

• isolate

• clean

• prime

Which type of sealant is polymerized by chemical reaction?

• cold-cured

• light-cured

• self-cured

• dual-cured

Self-cured sealant materials are supplied as a two-part system that includes what components?

• a base

• a catalyst

• filled resins

• both a base and a catalyst

The retention of the sealant is obtained by etching the enamel with what?

• citric acid

• phosphoric acid

• eugenol

• pumice

Enamel that has been etched has what appearance when dry?

• shiny

• frosty

• wet

• slightly yellow