Dentistry: Periodontal Ligament and Cementum

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What is the primary function of osteoblasts in osteoid tissue formation?

To produce an inorganic intercellular substance
To break down collagen molecules
To produce an organic intercellular substance (correct)
To absorb osteoid tissue

What is the term for the formation of calcifiable intercellular substance in osteoid tissue?

Lamina Cribriformis
Primary osteoid tissue
Secondary osteoid tissue (correct)
Lamina Dura

What is the characteristic of Sharpey's Fibers in areas of recent bone apposition?

They are rigid and unchanging
They are only found in new bone
They are only found in old bone
They are flexible and reflective of plasticity (correct)

What type of Sharpey's Fibers joins old and new fibrils?

Continuous Fibers (B) Signup and view all the answers

What is the term for the region where Sharpey's Fibers are attached?

Bundle Bone (B) Signup and view all the answers

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

To absorb shock and provide resistance to light and heavy forces (B) Signup and view all the answers

What is the range of width of the periodontal ligament?

.10-.38 mm (A) Signup and view all the answers

What is the term for the joint-like connection between the tooth and bone?

Syndesmoses (B) Signup and view all the answers

What is the function of the periodontal ligament in relation to mastication?

To provide sensory information during mastication (C) Signup and view all the answers

How does the width of the periodontal ligament vary with age?

It varies with age, with different widths at different age ranges (B) Signup and view all the answers

What is the term for the process of continuous remodeling of the periodontal ligament?

Remodeling (A) Signup and view all the answers

What is the function of osteoclasts in the periodontal ligament?

To maintain the periodontal ligament by resorbing bone (A) Signup and view all the answers

What type of cells can form dental cysts if stimulated?

Epithelial cells (D) Signup and view all the answers

What is the primary function of mesenchymal cells in the periodontal ligament?

To provide a source of new cells for the periodontal ligament (B) Signup and view all the answers

What is the role of macrophages in the periodontal ligament?

To respond to immune stimuli and phagocytose foreign bodies (B) Signup and view all the answers

What type of collagen fibers are predominant in the periodontal ligament?

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

What is the primary function of collagen fibers in the periodontal ligament?

To provide tensile strength and support (B) Signup and view all the answers

What is the function of the alveolar crest group of fibers in the periodontal ligament?

To resist vertical forces (D) Signup and view all the answers

What is the function of the horizontal fiber group in the periodontal ligament?

To resist horizontal forces (C) Signup and view all the answers

What is the function of the oblique fiber group in the periodontal ligament?

To provide additional support and stabilization (B) Signup and view all the answers

What is the result of increased functional load on the periodontal ligament?

Widening of the periodontal space (C) Signup and view all the answers