Most pulp irritation tests have involved teeth that are which of the following?

• A. Teeth with caries
• B. Necrotic teeth
• C. Healthy, intact, noncarious teeth
• D. Teeth with resorption

Answer: (C)

The main idea is that pulp irritation tests need a baseline of healthy, functioning pulp to accurately gauge how a material irritates living tissue. In healthy teeth, the pulp tissue can respond to a test material with a normal inflammatory or protective reaction, which provides a clear measure of irritancy.

If a tooth has caries, the pulp is often already inflamed from bacterial products; in a necrotic tooth the pulp is nonviable and cannot show a true response; and teeth with resorption involve structural and inflammatory changes that alter tissue behavior. These conditions confound results, making it hard to attribute any observed reaction to the test material itself.

Therefore, tests typically involve healthy, intact, noncarious teeth to obtain consistent, interpretable results.