How Long Should Etch Remain on the Tooth Prior to Rinsing

question 1

Multiple Choice

How long should etch remain on the tooth prior to rinsing?

• A)5 seconds
• B)10-15 seconds
• C)20-30 seconds
• D)40-50 seconds

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Definitions:

Privatizing

The process of transferring ownership of a business, enterprise, agency, or public service from the government to private individuals or organizations.

Natural Resources

Materials or substances occurring in nature which can be exploited for economic gain, such as minerals, forests, water, and fertile land.

Anthropologists

Scientists who study human societies, cultures, and their development.