What term describes a slight indentation that marks the junction of the anatomical crown with the root of a tooth?

The term that describes a slight indentation marking the junction of the anatomical crown with the root of a tooth is known as the cervix. This anatomical feature, also referred to as the cementoenamel junction (CEJ), is significant in dentistry as it separates the parts of the tooth above and below the gum line.

Enamel is the hard outer surface of the crown of the tooth, providing protection against decay. Dentin is the layer beneath the enamel and cementum, making up the bulk of the tooth structure and containing microscopic tubules connected to the pulp. The pulp itself is the innermost part of the tooth, housing nerves and blood vessels. While all these components are integral to the structure of a tooth, the cervix specifically defines the transition zone where the crown and root meet, making it a vital landmark in dental anatomy.