Tooth Structure And Development: From Formation To Function

Tooth Structure And Development: From Formation To Function

Question 1. Oral diaphragm
Answer:

• It comprises of two bilateral Mylohyoid muscles
• It provides structural support to the floor of the mouth
• It is attached to hyoid bone so that it can pull larynx forward during swallowing & opening of mouth

Question 2. Structure of tooth
Answer:

Each tooth is composed of:

1. Pulp

• It is central core of tooth
• It is loose, fibrous connective tissue
• Vessels, nerves, lymphatics reaches pulp through apical foramen

2. Dentin

• It is calcified material covering pulp
• Contains dentinal tubule

3. Enamel

• Hardest substance of body
• Covers dentin in crown portion of tooth
• Composed of crystalline prisms

4. Cementum

• Covers dentin in root portion
• It either overlaps enamel or just meet or is short of enamel

5. Periodontal ligament

• It holds the tooth in its socket

Question 3. Development of tooth
Answer:

Development of tooth:

Question 4. Enumerate structures between middle and inferior constrictor of pharynx.
Answer:

Structures between middle and inferior constrictor of pharynx are

• Internal laryngeal nerve
• Superior laryngeal vessels