Ch 2 Microscopic Anatomy
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| What type of epithelium is the gingiva made of? | show 🗑
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| Name two types of gingiva that are keratinized or parakeratinized. | show 🗑
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| show | 1. stratum basale 2. stratum spinosum 3. stratum granulosum 4. stratum corneum
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| show | stratum basale
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| show | stratum spinosum
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| How is nonkeratinized epithelium different than keratinized? | show 🗑
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| show | *sulcular epithelium *interdental col tissue *Jnctional epithelium (JE)
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| show | it is permeable & fluid & leukocytes move from connective tissue into the sulcus; also allows bacteria & byproducts to pass into gingival tissue
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| What is the easiest point of entry for bacterial to invade the connective tissue of the gingiva? | show 🗑
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| show | hemidesmosomes connect epithelial cells to the INTERNAL basal lamina (cell to basal lamina)
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| show | hemidesmosomes connect epithelial cells to the EXTERNAL basal lamina (cell to basal lamina)
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| What are desmosomes? | show 🗑
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| Do epithelial cells contain blood vessels? | show 🗑
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| show | Provides solidity to the gingiva & attaches the gingiva to the cementum & alveolar bone.
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| Name the two components of gingival connective tissue. | show 🗑
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| show | *protein fibers (collagen fibers) *ground substance (made from carboydrate)& gel like substance
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| Name the different types of cells found in gingival connective tissue. | show 🗑
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| What are gingival fiber groups? | show 🗑
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| Name the 9 gingival fiber groups. | show 🗑
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| What do the alveologingival fiber bundles do? | show 🗑
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| What do the dentogingival fiver bundles do? | show 🗑
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| show | encircle the tooth & connect adjacent teeth to one another
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| show | attach gingiva to the bone (causes stippling effect)
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| show | extend in a mesiodistal direction link adjacent teeth into a dental arch unit
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| What do intercircular fiber bundles do? | show 🗑
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| show | connect the oral & vestibular interdental papillae of posterior teeth
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| What do transgingival fiber bundles do? | show 🗑
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| What do transseptal fiber bundles do | show 🗑
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| What is the biologic width? | show 🗑
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| What is the length of the biologic width? | show 🗑
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| What role does biologic width play in dental restorations? | show 🗑
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| Define periodontal ligament. | show 🗑
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| Name the components of the PDL. | show 🗑
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| What are the functions of the PDL? | show 🗑
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| show | *alveolar crest *horizontal *oblique *apical *interradicular fiber groups
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| What do alveolar crest fiber groups do? | show 🗑
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| show | (right angle to long axis of tooth) resists horizontal movements of the tooth
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| What do oblique fiber groups do? | show 🗑
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| show | (apical-diagonal dir.) secure tooth to socket & resists forces that might lift the tooth out of the socket
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| show | (only in multirooted teeth) stablize tooth in its socket
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| show | The ends of the PDL fibers that are embedded in the cementum and alveolar bone.
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| What is cementum? | show 🗑
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| show | 1. seals & covers open dentinal tubules & protects underlying dentin 2. attaches the periodontal fibers to the tooth 3. forms new cementum & compensates for attrition
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| What are the components of mature cementum? | show 🗑
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| Name the two types of cementum. | show 🗑
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| show | 60
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| What % of cases does cementum meet enamel at the CEJ? | show 🗑
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| show | 10
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| What is the alveolar bone made of? | show 🗑
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| show | False, alveolar bone is constantly undergoing periods of formation & resorption.
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| Name the components of alveolar bone. | show 🗑
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| What tissue serves as a covering tissue for the outer surfaces of the body and a lining tissue for body cavities such as the mouth, stomach, and intestines? | show 🗑
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| show | Connective tissue
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| show | nonkeratinized layer
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| Epithelial cell junctions are cellular structures that can attach to... | show 🗑
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| show | allow cells to bind together to function as a strong structural unit
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| What is a cell junction that connects an epithelial basal cell to the basal lamina called? | show 🗑
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| show | True
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| show | Epithelial ridges
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| T/F Connective tissue comprises a gellike substance, fibers, and few cells. | show 🗑
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| T/F The sulcular and junctional epithelium are keratinized epithelial tissues. | show 🗑
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| What is the epithelium that forms the base of the sulcus and joins the gingiva to the tooth called? | show 🗑
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| In the junctional epithelium, epithelial cells attach to neighboring epithelial cells via... | show 🗑
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| The junctional epithelium attaches to the tooth surface via what? | show 🗑
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| show | Hemidesmosomes and the external basal lamina
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| The biologic width is the distance from the (a) to the (b)? | show 🗑
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| show | (a) tooth (b) bony socket
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| T/F An important function of the cementum of the tooth is to attach the periodontal ligament fibers to the tooth. | show 🗑
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| T/F Alveolar bone is mineralized connective tissue? | show 🗑
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Created by:
riodentalhygiene