Which Index Uses a Specially Designed Periodontal Probe Called the World

question 3

Multiple Choice

Which index uses a specially designed periodontal probe called the World Health Organization probe?

• A) Sulcus bleeding index (SBI)
• B) Russell Periodontal Index
• C) Periodontal disease index (PDI), developed by Sigurd Ramfjord
• D) Community index of periodontal treatment needs (CIPTN)

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Definitions:

Substitute

A good or service that can be used in place of another to satisfy similar needs or desires.

Economic Rent

The excess payment made to a factor of production over what is necessary to keep it in its current use, reflecting payment beyond its opportunity cost.

Equilibrium Wage

The wage rate at which the quantity of labor supplied equals the quantity of labor demanded in the market.

Perfectly Competitive

A market structure characterized by a large number of small firms, homogeneous products, and free entry and exit, leading to price taking behavior.