periodentine 2

What is the function of the periodontal ligament during tooth occlusion?

A cushion (correct)
A pressure sensor
A tooth anchor
A bone stimulator

What type of cell is responsible for producing and maintaining collagen fiber bundles in the PDL?

Osteoblast
Fibrocyte
Fibroblast (correct)
Osteoclast

What is the role of the nerves in the PDL?

To stimulate bone resorption
To regulate tooth movement
To stimulate bone growth
To provide sensation during tooth occlusion (correct)

What is the mechanism by which teeth can gradually move through the jaw?

Pressure on the leading side of the tooth initiating bone resorption (A) Signup and view all the answers

What is involved in the transmission of sensory information from the PDL to the brain?

Mandibular and maxillary branches of the trigeminal nerve (B) Signup and view all the answers

How can the orientations of PDL fiber bundles be visualized?

With special histological stains and crosspolarized light (A) Signup and view all the answers

What type of fibers are present in the periodontal ligament (PDL)?

Type I, III, and XII (C) Signup and view all the answers

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

Acting as a cushion (C) Signup and view all the answers

What is the role of fibroblasts in the periodontal ligament (PDL)?

Producing and maintaining collagen fiber bundles (A) Signup and view all the answers

What is the primary function of the periodontal ligament (PDL) in relation to tooth drift?

Playing a key role in tooth drift (D) Signup and view all the answers

What is the periodontal ligament (PDL) anchored to?

Cementum and alveolar bone (A) Signup and view all the answers

What is the significance of the periodontal ligament (PDL) in regenerative or orthodontic therapies?

It is a highly dynamic, constantly changing tissue (D) Signup and view all the answers

What can contribute to an imbalance in the processes of hard tissue removal and deposition around the PDL?

Trauma, infection/disease, and other factors (B) Signup and view all the answers

What can excessive resorption of the alveolar bone and cementum lead to?

All of the above (D) Signup and view all the answers

What is a consequence of severe imbalances in hard tissue removal and deposition around the PDL?

Tooth loss (C) Signup and view all the answers

What is the term for the fusion of teeth to the jawbone?

Dental ankylosis (C) Signup and view all the answers

What is a reflection of the various functions of the PDL?

The cellular and molecular structure of the periodontal ligament (D) Signup and view all the answers

What is described as an imbalance in the processes of hard tissue removal and deposition around the PDL?

Resorption and deposition (C) Signup and view all the answers

What is the primary function of the periodontal ligament in relation to the tooth?

To hold the tooth in its alveolus (C) Signup and view all the answers

What is the typical width of the periodontal ligament (PDL) space in an 11-16 year old?

0.21mm (A) Signup and view all the answers

What is the periodontal ligament composed of?

Fibrous connective tissue (B) Signup and view all the answers

What appears as a dark region between the tooth and socket in radiographs?

The periodontal ligament (PDL) (C) Signup and view all the answers

What is the name of the tissue that supports and anchors the tooth into the jaws?

Periodontium (B) Signup and view all the answers

What is the significance of the developmental origins of the periodontal tissues?

They originate from the teeth (A) Signup and view all the answers

What cell type is responsible for producing new cementum?

Cementoblasts (B) Signup and view all the answers

What is the main function of stem cells in the periodontal ligament?

To produce new periodontal cells for repair and regeneration (C) Signup and view all the answers

What is the normal function of the periodontal ligament in terms of hard tissue?

Maintaining a balance between resorption and deposition (A) Signup and view all the answers

What is one of the functions of the periodontal ligament?

A reservoir of periodontal cells (C) Signup and view all the answers

Which of the following cell types is NOT found in the periodontal ligament?

Chondrocytes (B) Signup and view all the answers

What is the current state of research on the role of the periodontal ligament in tooth eruption?

Research is ongoing to determine the PDL's role in tooth eruption (D) Signup and view all the answers