Chapter 2 Perio
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| show | Periodontium
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| show | Gingiva,Periodontal Ligament,Cementum,Alveolar bone
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| show | Gingiva
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| show | Gingiva
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| show | Free gingiva
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| slight depression on the gingiva corresponding to the depth of the sulcus | show 🗑
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| show | Papillae
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| proximal surfaces created below the contact area of teeth (aka.interdental gingiva) | show 🗑
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| show | Col
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| thin, flat plate that joins the gingival epithelium and underlying connective tissue. | show 🗑
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| ridges of epithelium that serve a connection between the free and attached gingiva and the underlying connective tissue | show 🗑
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| show | Stratified squamous epithelium
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| show | tissue of the oral cavity
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| show | Keratinization
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| ___________are part of the phagocytic system (ingest or engulf micro-organisms, cells, or other substances by other cells | show 🗑
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| __________contain nerve endings and are associated with tactile sensitivity. | show 🗑
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| ______________phagocytized and remains in the epithelium and gives the appearance of pigmentation to the epithelium | show 🗑
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| show | Attached gingiva
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| Thin nonkeratinized or parakeritinizedFrom outer epithelium to gingival sulcusJunctional epithelium (forms the gingival wall of the sulcus); no rete pegs, permeable, gingival crevicular fluidHealthy; 1-3mm deep | show 🗑
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| show | Sulcular or Gingival Crevicular Fluid
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| Separates periodontal ligamentNonkeratinized, stratified squamous Protects attachment15 to 20 cells thickHealthy .25 to 1.35mmContinual renewingSupports free marginal gingivaConsidered the dentogingival unit | show 🗑
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| 2 layers:Collagen fibrils & Fibroblasts | show 🗑
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| form fiber bundles which make up 60% of the lamina propria | show 🗑
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| undifferentiated mesenchymal cells, mast cells, macrophages, blood vessels, nerves are the other elements in CT | show 🗑
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| Gingival ligament=fiber bundles | show 🗑
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| Five principal fiber groups: | show 🗑
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| show | Transsepta
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| show | circular
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| show | dentoperiosteal
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| attach gingiva to bone | show 🗑
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| show | Dentogingival
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| Cushion between the tooth and bone made up of CT, fiber bundles & cellsGenerate pericementum & periosteumCementicles form from calcified material in the PDL or from displaced bits of cementum or bone | show 🗑
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| Functions of Periodontal Lig. | show 🗑
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| are made of collagen, and arranged in bundles with the other cellular, vascular, and nerve tissues | show 🗑
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| Attach tooth to bone, transmit occlusal forces to bone, resist occlusal forces, protect the vessels and nerves from injury | show 🗑
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| show | Sharpey’s fibers-
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| Movement throughout lifeWear of proximal and occlusal tooth surfaces1 cm in a lifetime | show 🗑
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| show | perio. cementum
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| Support, extension of bone from body of mandible and maxilla, lines sockets of teethLamina dura- walls of socket when viewed on a radiographRadio-opaqueAlveoli-tooth sockets | show 🗑
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| Alveolar Process Components | show 🗑
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| Tooth socketsLined by cribriform plateThousands of poresSupplied with nerves and bloodEach root has its ownBone lining alveoli contain Sharpey’s fibers or “bundle bone” | show 🗑
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| show | Compact Bone
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| show | Cancellous Bone
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| resorbed area; occurs in pt’s with labailly inclined roots | show 🗑
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| opening or window in the bone covering the facial root surface or between two adjacent roots | show 🗑
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| Superior alveolar arteries | show 🗑
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| show | mandible
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| show | sensory
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| Clinical Conditions of Periodontal Tissue Characteristics | show 🗑
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| Gingiva; thinsConnective tissue; more dense & coarsePDL; thicker, irregular structureCementum; thicker 10xAlveolar Bone; less regular surfaceDecrease dexterity may affect care | show 🗑
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| show | Chemotaxis
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| act of ingesting or engulfing micro-oraganisms, cells or other | show 🗑
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| aka neutrophils, make up 70% of circulating leukocytes; have granules that are filled with enzymes that when released cause ts. destruction | show 🗑
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| show | Mast Cells-
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| scavenger, digest enzymes | show 🗑
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| react to cytokines, cause allergic reactions | show 🗑
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| Made up of protein, bacteriolysis (destruction of bacteria), promotion of immune response, mediates degranulation of mast cells | show 🗑
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| show | Cytokines
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| show | Type I - Anaphylaxis
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| Break down of tissue or blood cells, product of AB reacting directly to AG | show 🗑
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| show | Type III – Immune complex
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| AG to T Lymphocytes, 2nd exposure increased | show 🗑
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