Coronal Polish Certification Practice Test

What term is used to describe dental stains that come from within the tooth?

1. Exogenous

2. Endogenous

3. Intrusive

4. Extrinsic

The correct answer is: Endogenous

The term used to describe dental stains that originate from within the tooth is "endogenous." These stains are typically the result of internal factors, such as genetic conditions, certain medications taken during tooth development, environmental influences during enamel formation, or systemic diseases. Since they develop from within, endogenous stains are often more difficult to remove compared to those that are deposited on the outside of the tooth, which are referred to as extrinsic stains. In contrast, external factors that influence the color of teeth, such as food, drinks, or smoking, are categorized as exogenous or extrinsic stains. These stains accumulate on the tooth surface and can often be removed through professional cleaning or regular oral hygiene practices. The distinction between endogenous and exogenous is significant for dental professionals when assessing the patient's dental health and determining the appropriate treatment for stain removal. Understanding this classification helps in providing more targeted and effective care.