PDL and alveolar bone

What is the primary function of the periodontal ligament (PDL)?

• a) To support the teeth in the alveolar sockets

• b) To connect the alveolar bone to the cementum of the tooth

• c) To provide nourishment to the pulp tissue

• d) To protect the tooth from bacterial invasion

The periodontal ligament is composed of:

• a) Collagen fibers

• b) Enamel matrix

• c) Dentin tubules

• d) Haversian canals

Which of the following cells is responsible for bone remodeling in the alveolar bone?

• a) Cementoblasts

• osteoblasts

• c) Fibroblasts

• Odontoblasts

What is the name of the bone resorption process that occurs on the alveolar bone surface during orthodontic tooth movement?

• a) Osteogenesis

• b) Ossification

• c) Apposition

• d) Bone remodeling

Which statement regarding the periodontal ligament is true?

• a) It is a calcified tissue that covers the tooth crown.

• b) It is highly vascularized and has nerve endings.

• c) It is primarily composed of enamel matrix.

• d) It functions as a protective layer against bacterial infections.

Loss of alveolar bone due to periodontal disease can result in:

• a) Increased tooth stability

• b) Formation of dental caries

• c) Tooth sensitivity

• d) Tooth mobility and eventual tooth loss