Five Key Variables Affect Tooth Structure Loss During Extrinsic Tooth

question 15

Multiple Choice

Five key variables affect tooth structure loss during extrinsic tooth stain removal with a rubber cup: abrasiveness of the prophylaxis paste,quantity of abrasive agent,contact time of the rubber cup on the tooth surface,speed of the rubber cup,and pressure or force applied to the rubber cup.To preserve tooth structure and prevent damage to teeth and restorative materials,the practitioner starts with the least abrasive agent and amount of agent,with the least amount of rubber cup contact time,and with the least amount of pressure to remove the extrinsic stain.

• A) Both statements are true.
• B) Both statements are false.
• C) The first statement is true;the second statement is false.
• D) The first statement is false;the second statement is true.

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Definitions:

Average Collection Period

The mean period required for a company to get payment from its clients.

Finance Charges

Fees representing the cost of credit or the cost of borrowing, including interest and transaction fees.

Accounts Receivable

Money owed to a company by its customers for goods or services already delivered but not yet paid for.

maturity Value

The amount that will be received at the maturity or expiration date of an investment, representing the principal plus interest.