Term
| tongue embryological development |
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Definition
| from pharyngeal pouches, muscle cells from somites |
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Term
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Definition
| filiform, fungiform, circumvallate, foliate (rare). filiform is only kind without taste buds. |
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Term
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Definition
| ectomesenchyme (neural crest) and skin ectoderm. |
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Term
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Definition
| by week 6 of embryological development, the bud stage starts. then cap, bell, and terminal differentiation |
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Term
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Definition
| innermost: rich in fibroblasts and undifferentiated mesenchymal cells. middle: cell-free zone of Weil, rich in capillaries and nerves (nerve plexus located here). outermost layer: odontoblasts. Defense cells also found in pulp: macrophages, granulocytes, mast cells, plasma cells. |
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Term
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Definition
| extended by odontoblasts into the dentin |
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Term
| t/f dentin has capability for regrowth |
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Definition
| t - it's living tissue, unlike enamel. It reacts to physiological and pathological stimuli. 70% inorganic, harder than bone but softer than enamel. |
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Term
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Definition
| composed of enamelins and amelogen proteins, but 90% inorganic. secreted by ameloblasts which die after enamel deposition. |
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Term
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Definition
| derived from oral epithelium of ectodermal origin. makes enamel, which has no ability for regrowth since ameloblasts die. |
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Term
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Definition
| projections of ameloblasts into the enamel in the developing tooth |
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Term
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Definition
| bone-like structure which covers the roots of the teeth in a thin layer. attaches to the dentin, periodontal ligaments and the enamel lower on the tooth. lacks vascularity. |
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Term
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Definition
| connects tooth to bony socket, and connects to cementum via collagen. allows for individual tooth movement. acts as shock absorber. |
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Term
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Definition
| gum = mucosa covering alveolar processes, aids in support, protects alveolar processes and periodontal ligaments from bacterial infection. usually pink, turns red when inflamed, usually from bacterial plaque. |
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Term
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Definition
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Term
| first signs of cell arrangement in tooth bud = |
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Definition
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Term
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Definition
| known for histodifferentiation and morphodifferentiation |
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Term
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Definition
| dentin and enamel develop. eruption and attrition follow. |
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Term
| which papilla in the big V shape on tongue? |
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Definition
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Term
| t/f there is a keratinized layer on the tongue |
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Definition
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Term
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Definition
| nerve and blood supply going up into pulp |
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Term
| odontogenesis involves a series of _____ between tooth bud and dental papillae |
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Definition
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Term
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Definition
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Term
| what type of bone is in jaw? |
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Definition
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Term
| why can't you see enamel on section of adult tooth |
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Definition
| its removed during demineralization |
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Term
| what happens to external enamel epithelium |
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Definition
| first it's continuous with the basal lamina of bone, but eventually it disappears |
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Term
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Definition
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Term
| basal anatomic surface of ameloblasts |
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Definition
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