Podcast
Questions and Answers
What is the function of the Periodontal Ligament (PDL)?
What is the function of the Periodontal Ligament (PDL)?
- Anchors the enamel of the tooth to the dentin
- Provides support, sensory input and regenerative capabilities for the tooth (correct)
- Connects the dentin of the tooth to the alveolar bone
- Protects the root of the tooth from bacteria
Which of these structures is responsible for anchoring the tooth to the Periodontal Ligament (PDL)?
Which of these structures is responsible for anchoring the tooth to the Periodontal Ligament (PDL)?
- Enamel
- Cementum (correct)
- Dentin
- Alveolar Bone
In a healthy state, what is the typical depth of the gingival sulcus?
In a healthy state, what is the typical depth of the gingival sulcus?
- 3-5 mm
- 5-7 mm
- 0.5-1.5 mm
- 1-3 mm (correct)
Which of the following is NOT a role of the gingiva?
Which of the following is NOT a role of the gingiva?
Which of the following statements accurately describes the oral epithelium (OE)?
Which of the following statements accurately describes the oral epithelium (OE)?
The gingival sulcus is lined by which type of epithelium?
The gingival sulcus is lined by which type of epithelium?
What is the primary function of the junctional epithelium (JE)?
What is the primary function of the junctional epithelium (JE)?
What structural feature of the sulcular epithelium contributes to its function?
What structural feature of the sulcular epithelium contributes to its function?
Which of the following is NOT a component of the gingival connective tissue (lamina propria)?
Which of the following is NOT a component of the gingival connective tissue (lamina propria)?
Which of the following is a key function of the gingival connective tissue?
Which of the following is a key function of the gingival connective tissue?
Which of these structures is NOT directly involved in the formation of the epithelial attachment?
Which of these structures is NOT directly involved in the formation of the epithelial attachment?
What characteristic differentiates the oral epithelium from the sulcular epithelium?
What characteristic differentiates the oral epithelium from the sulcular epithelium?
Flashcards
Gingiva
Gingiva
A specialized connective tissue that supports blood vessels, nerves, and immune cells. It helps transport water, nutrients, and metabolites, maintaining tissue integrity. It also acts as a scaffold for immune responses, aiding in host defense.
Periodontal Ligament (PDL)
Periodontal Ligament (PDL)
A fibrous connective tissue that connects the cementum of the tooth to the alveolar bone. It provides support, sensory input for pressure detection, and helps the tooth withstand chewing forces.
Cementum
Cementum
A hard, calcified tissue that covers the root of the tooth and anchors it to the periodontal ligament (PDL) via Sharpey's fibers. It also protects the root.
Alveolar Bone
Alveolar Bone
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Gingival Sulcus
Gingival Sulcus
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Oral Epithelium (OE)
Oral Epithelium (OE)
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Sulcular Epithelium (SE)
Sulcular Epithelium (SE)
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Junctional Epithelium (JE)
Junctional Epithelium (JE)
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Gingival Crevicular Fluid (GCF)
Gingival Crevicular Fluid (GCF)
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Structure of the Oral Epithelium
Structure of the Oral Epithelium
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Structure of the Sulcular Epithelium
Structure of the Sulcular Epithelium
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Structure of the Junctional Epithelium
Structure of the Junctional Epithelium
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Function of Gingival Connective Tissue
Function of Gingival Connective Tissue
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Study Notes
Gingival Epithelium
- Three anatomic areas: Oral Epithelium (OE), Sulcular Epithelium (SE), and Junctional Epithelium (JE)
- Oral Epithelium (OE): Covers free and attached gingiva, extends from gingival margin to mucogingival junction, stratified squamous keratinized tissue, visible to the naked eye.
- Sulcular Epithelium (SE): Lines gingival sulcus, stratified squamous non-keratinized tissue, does not directly contact the tooth.
- Junctional Epithelium (JE): Attaches gingiva to the tooth at the base of the sulcus, stratified squamous non-keratinized tissue, anchors gingiva to tooth, prevents bacterial invasion.
Oral Epithelium Anatomy and Function
- Anatomy: Multiple cell layers (basal, prickle, granular, keratinized)
- Function: Protects underlying tissues; keratinized barrier against physical and microbial damage.
Sulcular Epithelium Anatomy and Function
- Anatomy: Thin, non-keratinized, no rete pegs, smooth interface with connective tissue.
- Function: Forms lining of gingival sulcus, semi-permeable barrier allowing gingival crevicular fluid (GCF) to flow; aids in immune defense.
Junctional Epithelium Anatomy and Function
- Anatomy: Thin, stratified squamous non-keratinized epithelium.
- Function: Attaches gingiva to tooth, barrier against bacterial invasion, allows immune cells to access the area for defense.
Gingival Connective Tissue
- Structure: Composed of collagen fibers, fibroblasts, and an extracellular matrix.
- Function: Provides solidity to gingiva, attaches it to cementum and alveolar bone, supports blood vessels, nerves, and immune cells, transports water, nutrients, and metabolites; maintains tissue integrity; provides a scaffold for immune responses, aiding in host defense.
Periodontal Ligament (PDL)
- Location: Connects cementum to alveolar bone.
- Function: Provides support, sensory input (pressure), regenerative capabilities, helps withstand chewing forces.
Cementum
- Location: Covers the root of the tooth.
- Function: Anchors tooth to PDL via Sharpey's fibers, protects the root.
Alveolar Bone
- Location: Forms tooth socket.
- Function: Provides structural support and remodels in response to mechanical stress (e.g., chewing).
Gingival Sulcus
- Shape: V-shaped
- Depth: 1-3 mm in health; deeper sulcus may indicate periodontal disease.
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