Periodontal Ligaments

These flashcards cover key concepts related to the functions, structure, and clinical significance of periodontal ligaments.

What are the main functions of the periodontal ligaments?

Supportive, sensory, and nutrition support.

How do periodontal ligaments anchor a tooth to the jaw?

Collagen fibers bundle attaches tooth to jaw and secures it within the alveolar bone.

What is the role of the periodontal ligaments as a shock absorber?

They dampen forces during chewing and other activities.

What does the term 'proprioception' refer to in relation to periodontal ligaments?

The ability to sense the position and movement of teeth.

What are the four main types of periodontal ligament fibers?

Alveolar crest, horizontal, oblique, apical.

What is the clinical significance of concussion in dental trauma?

Severe impact without dislocation of the tooth.

What is avulsion in relation to dental injury?

Dislocation of tooth from its socket.

How does aging affect the periodontal ligament?

Width of PDL decreases, increased elastic fibers but decreased vascularity.

What is the function of apical fibers in the periodontal ligament?

Prevent tooth lifting.

What occurs during luxation of a tooth?

Partial or complete dislocation of the tooth.

What does 'intrusion' mean in dental terminology?

Displacement of tooth in an alveolar direction.

What effect does the alveolar crest have on forces applied to the tooth?

Resists vertical forces.