DANB Dental Assistant Certification Practice Test

Free 5-question sample test with instant feedback. See how ready you are.

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Sample Questions

Question 1

What is the hardest substance in the human body, forming the outer layer of the tooth crown?

Answer: Enamel is the hardest substance in the human body. It covers the anatomical crown and is composed of approximately 96% inorganic material (hydroxyapatite crystals).

Question 2

What tooth structure makes up the bulk of the tooth and extends from the crown to the root?

Answer: Dentin makes up the bulk of the tooth. It is less hard than enamel, contains dentinal tubules, and is sensitive because it surrounds the pulp chamber.

Question 3

What is the name of the specialized connective tissue that attaches the tooth to the alveolar bone?

Answer: The periodontal ligament (PDL) attaches the tooth to the alveolar bone. It is composed of collagen fibers and acts as a shock absorber during chewing.

Question 4

What covers the root surface of a tooth and serves as an attachment point for the periodontal ligament fibers?

Answer: Cementum covers the root surface of the tooth. It is a calcified tissue that anchors Sharpey's fibers of the periodontal ligament to the root.

Question 5

What term describes the junction where enamel and cementum meet on the tooth?

Answer: The cementoenamel junction (CEJ), also called the cervical line, is where enamel and cementum meet. It marks the boundary between the anatomical crown and the root.