Podcast
Questions and Answers
What is the primary function of the junctional epithelium?
What is the primary function of the junctional epithelium?
- To protect against bacterial invasion
- To facilitate the turnover of keratinized cells
- To connect the gingiva to the tooth surface (correct)
- To provide an acidic environment for bacterial growth
What does having a non-keratinized epithelium imply about the junctional epithelium?
What does having a non-keratinized epithelium imply about the junctional epithelium?
- It offers enhanced protection against bacterial infection
- It requires less cellular turnover than keratinized tissue
- It is more susceptible to injury compared to keratinized tissue (correct)
- It develops a thicker cellular structure than keratinized tissue
What is the average length of the junctional epithelium?
What is the average length of the junctional epithelium?
- 0.5 - 1.0 mm
- 0.71 - 1.35 mm (correct)
- 1.0 - 1.5 mm
- 1.5 - 2.0 mm
How thick is the junctional epithelium at the apical zone?
How thick is the junctional epithelium at the apical zone?
What characteristic defines the sulcular epithelium in healthy conditions?
What characteristic defines the sulcular epithelium in healthy conditions?
What shape are the interdental papillae?
What shape are the interdental papillae?
What is the primary function of the gingival col?
What is the primary function of the gingival col?
Which area is NOT one of the three areas of epithelium in the dento-gingival junction?
Which area is NOT one of the three areas of epithelium in the dento-gingival junction?
Which layer of the oral epithelium is primarily protective?
Which layer of the oral epithelium is primarily protective?
What happens to the number of cell layers as you move deeper into the oral epithelium?
What happens to the number of cell layers as you move deeper into the oral epithelium?
Which epithelium is not visible in the mouth visually?
Which epithelium is not visible in the mouth visually?
Why is the tooth area described as thin in terms of cellular layers?
Why is the tooth area described as thin in terms of cellular layers?
What structural role do the prickle and basal cell layers fulfill?
What structural role do the prickle and basal cell layers fulfill?
What is the primary function of the junctional epithelium in relation to teeth?
What is the primary function of the junctional epithelium in relation to teeth?
Which layer of tissue connects the junctional epithelium to the tooth surface?
Which layer of tissue connects the junctional epithelium to the tooth surface?
What structural feature allows the junctional epithelium cells to communicate with each other?
What structural feature allows the junctional epithelium cells to communicate with each other?
Which of the following is NOT a layer associated with the junctional epithelium?
Which of the following is NOT a layer associated with the junctional epithelium?
What does the term 'junction' refer to in the context of the junctional epithelium?
What does the term 'junction' refer to in the context of the junctional epithelium?
Which epithelial layer provides the least amount of resistance to the penetration of pathogens?
Which epithelial layer provides the least amount of resistance to the penetration of pathogens?
During tooth eruption, what does the body attempt to do?
During tooth eruption, what does the body attempt to do?
What is the role of the external basal lamina in relation to the junctional epithelium?
What is the role of the external basal lamina in relation to the junctional epithelium?
What is the primary function of gingival connective tissue?
What is the primary function of gingival connective tissue?
Which type of supragingival fibers connects the alveolar crest to the gingival connective tissue?
Which type of supragingival fibers connects the alveolar crest to the gingival connective tissue?
How do dentogingival fibers contribute to the structure of the gingiva?
How do dentogingival fibers contribute to the structure of the gingiva?
What is the shape of a healthy gingival sulcus?
What is the shape of a healthy gingival sulcus?
What role do intergingival fibers play in the gingival architecture?
What role do intergingival fibers play in the gingival architecture?
Which type of fibers runs horizontally between the cementum and the CEJ?
Which type of fibers runs horizontally between the cementum and the CEJ?
What characteristic helps gingival connective tissue maintain its integrity and strength?
What characteristic helps gingival connective tissue maintain its integrity and strength?
How deep is the gingival sulcus typically in a healthy state?
How deep is the gingival sulcus typically in a healthy state?
What is the primary function of the oral epithelium in the gingiva?
What is the primary function of the oral epithelium in the gingiva?
Which layer of the oral epithelium is responsible for the highest level of keratinization?
Which layer of the oral epithelium is responsible for the highest level of keratinization?
What unique feature does the sulcular epithelium lack compared to the attached gingiva?
What unique feature does the sulcular epithelium lack compared to the attached gingiva?
Which function does the rete peg pattern serve in the gingival tissue?
Which function does the rete peg pattern serve in the gingival tissue?
What type of epithelial cells primarily make up the prickle cell layer?
What type of epithelial cells primarily make up the prickle cell layer?
Why is the sulcular epithelium considered to be semi-permeable?
Why is the sulcular epithelium considered to be semi-permeable?
What primarily characterizes the basal cell layer of the oral epithelium?
What primarily characterizes the basal cell layer of the oral epithelium?
What is the main reason for the oral epithelium having multiple cellular layers?
What is the main reason for the oral epithelium having multiple cellular layers?
Flashcards are hidden until you start studying
Study Notes
Interdental Papillae
- Triangular shape with a point
- Fills space between teeth
- Prevents food from collecting
Gingival Col
- U-shaped space between teeth
- Disease frequently occurs here
- Food can collect
Dentogingival Junction
- Three areas of epithelium: Junctional, Sulcular, and Oral
Oral Epithelium
- Covers free and attached gingiva
- Extends from gingival margin to mucogingival junction
- Only part of periodontium visible to the naked eye
- Stratified squamous epithelium
- Layers (deepest to superficial): Basal, Prickle, Granular, Keratinized
- Rete pegs increase attachment strength and support
Sulcular Epithelium
- Faces tooth surface without contact
- Thin, non-keratinized
- No rete pegs
- Semi-permeable, allowing gingival crevicular fluid (GCF) flow
- In health, smooth interface with connective tissue
Junctional Epithelium
- Joins gingiva to tooth surface
- Length: 0.71-1.35mm
- Thickness: 15-30 cells coronally, 4-5 cells apically
- High cell turnover
- Non-keratinized
- Very permeable
Embryology of Junctional Epithelium
- Body's continuous epithelium sheet is penetrated by erupting teeth.
- The body seals the opening by attaching epithelium.
Microscopic Anatomy of Junctional Epithelium
- Closely packed epithelial cells
- Connected by desmosomes
- Internal basal lamina connects to tooth surface
- External basal lamina connects to gingival connective tissue
Functions of Gingival Connective Tissue
- Provides integrity and strength
- Transports nutrients, metabolites, oxygen etc.
- Mediates host response (immune)
Supragingival Fibers
- Keep gingiva upright
- Made of collagen bundles
- Prevent gingival collapse
- Directions: Alveologingival (AG), Circular (C), Dentogingival (DG), Periosteogingival (PG), Intergingival (IG), Intercircular (IC), Interpapillary (IP), Transgingival (TG), Transeptal (TS)
Gingival Sulcus in Health
- Depth: 3mm or less
- Shape: Varies (implied)
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
