Which Type of Stain Is Incorporated into the Tooth Surface

question 4

Multiple Choice

Which type of stain is incorporated into the tooth surface and cannot be removed easily if at all?

• A)Tobacco
• B)Coffee
• C)Tetracycline
• D)Iron

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Definitions:

Subspecies

A subdivision within a species, characterized by distinct genetic, morphological, or behavioral traits, often resulting from geographical isolation.

Genus

A rank in the biological classification system (taxonomy) that groups together species that are closely related, sharing a common ancestor.

Species

A group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding, classified together as having common characteristics.

Reproductively Isolated

A state in which different groups of organisms can no longer interbreed and produce fertile offspring, leading to speciation.