Podcast
Questions and Answers
Which type of epithelium covers both the free and attached gingiva, extending from the gingival margin to the mucogingival junction?
Which type of epithelium covers both the free and attached gingiva, extending from the gingival margin to the mucogingival junction?
- Junctional Epithelium (JE)
- Connective Tissue
- Sulcular Epithelium (SE)
- Oral Epithelium (OE) (correct)
Which of the following is a characteristic of Sulcular Epithelium (SE)?
Which of the following is a characteristic of Sulcular Epithelium (SE)?
- Forms the epithelial attachment to the tooth
- Lines the gingival sulcus without direct contact to the tooth (correct)
- Keratinized tissue visible to the naked eye
- Extends to the mucogingival junction
What is the primary function of the Junctional Epithelium (JE)?
What is the primary function of the Junctional Epithelium (JE)?
- To anchor the gingiva to the tooth and prevent bacterial invasion (correct)
- To form a semi-permeable barrier allowing fluid flow into the sulcus
- To protect against physical and microbial damage on the outer surface of the gingiva
- To provide support and regenerative capabilities to the tooth during chewing
Which type of epithelium is characterized as thin, non-keratinized, and forming the epithelial attachment to the tooth?
Which type of epithelium is characterized as thin, non-keratinized, and forming the epithelial attachment to the tooth?
What is the function of the keratinized layer in Oral Epithelium (OE)?
What is the function of the keratinized layer in Oral Epithelium (OE)?
What role does gingival crevicular fluid (GCF) play within the sulcular epithelium?
What role does gingival crevicular fluid (GCF) play within the sulcular epithelium?
Which component provides solidity to the gingiva and attaches it to the cementum and alveolar bone?
Which component provides solidity to the gingiva and attaches it to the cementum and alveolar bone?
What is the composition of the gingival connective tissue?
What is the composition of the gingival connective tissue?
Which structures are supported by the gingival connective tissue?
Which structures are supported by the gingival connective tissue?
What connects the cementum of the tooth to the alveolar bone?
What connects the cementum of the tooth to the alveolar bone?
Which structure anchors the tooth to the PDL and protects the root?
Which structure anchors the tooth to the PDL and protects the root?
What is the primary function of the alveolar bone?
What is the primary function of the alveolar bone?
In healthy gingiva, what is the typical depth of the gingival sulcus?
In healthy gingiva, what is the typical depth of the gingival sulcus?
What shape does a healthy gingival sulcus typically have?
What shape does a healthy gingival sulcus typically have?
Which tissue type is the oral epithelium?
Which tissue type is the oral epithelium?
Which tissue type is the sulcular epithelium?
Which tissue type is the sulcular epithelium?
Which tissue type is the junctional epithelium?
Which tissue type is the junctional epithelium?
What is the function of the periodontal ligament?
What is the function of the periodontal ligament?
What is the function of the cementum?
What is the function of the cementum?
What is the function of the alveolar bone?
What is the function of the alveolar bone?
Flashcards
Oral Epithelium (OE)
Oral Epithelium (OE)
Covers the free and attached gingiva, extending from the gingival margin to the mucogingival junction. It's a visible, protective layer.
Sulcular Epithelium (SE)
Sulcular Epithelium (SE)
Lines the gingival sulcus, the space between the tooth and free gingiva. Made of non-keratinized stratified squamous epithelium.
Junctional Epithelium (JE)
Junctional Epithelium (JE)
Forms the epithelial attachment to the tooth at the base of the sulcus, anchoring gingiva and preventing bacterial invasion.
Function of Oral Epithelium (OE)
Function of Oral Epithelium (OE)
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Function of Sulcular Epithelium (SE)
Function of Sulcular Epithelium (SE)
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Function of Junctional Epithelium (JE)
Function of Junctional Epithelium (JE)
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Periodontal Ligament (PDL)
Periodontal Ligament (PDL)
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Cementum Function
Cementum Function
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Alveolar Bone Function
Alveolar Bone Function
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Gingival Connective Tissue (Lamina Propria)
Gingival Connective Tissue (Lamina Propria)
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Healthy Gingival Sulcus
Healthy Gingival Sulcus
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Study Notes
Oral Epithelium (OE)
- Covers both the free and attached gingiva
- Extends from the gingival margin to the mucogingival junction
- Stratified squamous keratinized epithelium
- Visible to the unaided eye
- Protects underlying tissues via a keratinized barrier against physical and microbial damage
Sulcular Epithelium (SE)
- Lines the gingival sulcus (space between the tooth and free gingiva)
- Stratified squamous non-keratinized epithelium
- Does not directly contact the tooth; part of the free gingiva
- Thin, non-keratinized with a smooth interface and no rete pegs, connects to connective tissue
- Forms the lining of the gingival sulcus, which creates a semi-permeable barrier for gingival crevicular fluid (GCF) flow, aiding the immune system
Junctional Epithelium (JE)
- Forms the epithelial attachment at the tooth's base
- Stratified squamous non-keratinized epithelium
- Anchors gingiva and prevents bacterial invasion
- Thin, stratified squamous non-keratinized epithelium
- Provides attachment between the gingiva and the tooth, functioning as a barrier against bacterial invasion and facilitating immune cell access for defense
Gingival Connective Tissue (Lamina Propria)
- Primarily composed of collagen fibers, fibroblasts, and extracellular matrix
- Provides solidity to the gingiva and attaches it to the cementum and alveolar bone
- Supports blood vessels, nerves, and immune cells
- Transports water, nutrients, and metabolites, maintaining tissue integrity
- Acts as a scaffold for immune responses, aiding in host defense
Periodontal Ligament (PDL)
- Connects the tooth's cementum to the alveolar bone
- Provides support, sensory input (detects pressure), and regenerative capabilities
- Helps the tooth withstand chewing forces
Cementum
- Covers the tooth's root
- Anchors the tooth to the PDL using Sharpey's fibers
- Protects the root
Alveolar Bone
- Forms the socket housing the tooth
- Provides structural support and remodels in response to mechanical stress such as chewing
Gingival Sulcus
- V-shaped in healthy state
- Measures 1-3 mm in depth when healthy
- Deeper sulcus may indicate periodontal disease
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