What is the name of the depressed area, identified in red, under the contact between each tooth? (spelling counts)

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All of the following terms are used to describe calculus EXCEPT one. Which one is the  EXCEPTION?

A bilateral exam uses two hands at the same time to examine corresponding structures on opposite sides of the body. A bimanual exam uses fingers and thumb from each hand applied simultaneously in coordination.

The most common sites of oral cancer include all of the following EXCEPT;

The most effective ways to identify interproximal subgingival calculus includes all of the follow EXCEPT one. Which one is the EXCEPTION?

Calculus occurs most frequently on;

  Which of the following pictures demonstrates a Class II embrasure where the tip of the papilla is at or apical to the CEJ?

Spirochete and vibrio bacteria enter the biofilm in what time frame?

The chemical content of supra and subgingival calculus is vastly different. The chemical composition of calculus varies depending on age and hardness.