Free CPT Periodontal Anatomy & Physiology Questions and Answers

Question 1

What is the primary function of the periodontal ligament?

Accepted Answer

To absorb chewing forces and anchor the tooth to the bone

Answer

The periodontal ligament (PDL) is a specialized connective tissue that surrounds the root of the tooth and connects it to the alveolar bone. Its primary functions are to provide a suspensory cushion, absorbing the forces of mastication (chewing) to protect the tooth and bone, and to firmly anchor the tooth within its socket. This dual role is essential for tooth stability and function.

Question 2

What is the role of the cementum in the periodontium?

Accepted Answer

To maintain the connection between the tooth and bone

Answer

Cementum is a specialized calcified tissue that covers the anatomical root of a tooth. Its main role is to provide an attachment surface for the periodontal ligament fibers, which in turn connect the tooth to the alveolar bone. This connection is vital for anchoring the tooth securely within its socket and distributing occlusal forces, thereby maintaining the tooth-bone connection.

Question 3

What is the primary function of the gingiva in oral health?

Accepted Answer

To support the teeth and protect underlying tissues

Answer

The gingiva, or gums, is the part of the oral mucosa that surrounds the teeth and covers the alveolar bone. Its primary function is to provide a protective barrier against bacterial invasion and physical trauma to the underlying periodontal tissues and bone. Healthy gingiva also helps support the teeth by maintaining their position in the arch.

Question 4

Which layer of the tooth provides nutrients to the dentin?

Accepted Answer

Pulp

Answer

The pulp is the innermost part of the tooth, containing blood vessels, nerves, and connective tissue. It is responsible for providing nutrients to the dentin, the layer beneath the enamel and cementum, through its extensive vascular network. This nourishment is crucial for the vitality and health of the dentin, making the pulp the correct answer.

Question 5

What is the role of alveolar bone in the periodontium?

Accepted Answer

To support the teeth in their sockets

Answer

Alveolar bone is the specialized bone that forms the sockets and supports the roots of the teeth. Its primary role is to provide structural support and stability, holding the teeth firmly in place within the jaw. Healthy alveolar bone is crucial for maintaining tooth integrity and function, directly supporting the teeth in their sockets.

CPT - Certified Periodontal Therapist Practice Test

CPT - Certified Periodontal Therapist Practice Test

Free CPT Periodontal Anatomy & Physiology Questions and Answers