Lesson Check: Healthy Teeth and Mouth

The last permanent teeth come in during young ______________.

• childhood

• adulthood

• infancy

The ___________ is the visible portion of the tooth.

• crown

• neck

• root

A protective layer of ____________ covers the crown of a tooth.

• plaque

• enamel

• pulp

A tooth is naturally protected from bacteria by saliva.

• True

• False

When plaque hardens, it forms a crust-like substance called tartar.

• True

• False

Which adheres to the outside of the tooth and seals out saliva?

• pulp

• plaque

• halitosis

• malocclusion

Which is made up of the gum, periodontal ligaments, and the jawbone?

• periodontium

• pulp

• halitosis

• malocclusion

Which is a misalignment of the upper and lower teeth, also referred to as “bad bite”?

• halitosis

• periodontal disease

• malocclusion

• plaque

Which is an inflammation caused by bacterial infection?

• periodontium

• halitosis

• periodontal disease

• malocclusion

Which is also referred to as “bad breath”?

• plaque

• halitosis

• malocclusion

• periodontal disease