Lecture slides anatomy of periodontium 2008

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Figure 4-18 Junctional epithelium on an erupting tooth. The junctional epithelium (JE) is formed by the joining of the oral epithelium (OE) and the reduced enamel epithelium (REE). AC, Afibrillar cementum, sometimes formed on enamel after degeneration of the REE. The arrows indicate the coronal movement of the regenerating epithelial cells, which multiply more rapidly in the JE than in the OE. E, Enamel; C, root cementum. A similar cell turnover pattern exists in the fully erupted tooth. (Modified from Listgarten MA: J Can Dent Assoc 36:70, 1970.) 12 June 2008 Year 3 Block Head & Neck 32 Downloaded from: Carranza's Clinical Periodontology (on 28 May 2008 03:57 PM) © 2007 Elsevier
Junctional epithelium The attachment of the junctional epithelium to the tooth is reinforced by the gingival fibers. For this reason, both are considered a functional unit, dentogingival unit. Their functions: • junctional epithelium is firmly attached to the tooth surface, forming an epithelial barrier against plaque bacteria. • it allows access of gingival fluid, inflammatory cells, and components of the immunologic host defense to the gingival margin. • junctional epithelial cells exhibit rapid turnover, which contributes to the host-parasite equilibrium and rapid repair of damaged tissue. Turnover times for different areas of the oral epithelium in experimental animals: • palate, tongue, and cheek, 5 to 6 days; • gingiva, 10 to 12 days, • junctional epithelium, 1 to 6 days 12 June 2008 Year 3 Block Head & Neck 33
Page 1 and 2: Anatomy of Periodontium Erry Mocham
Page 3 and 4: GINGIVA 12 June 2008 Year 3 Block H
Page 5 and 6: Objectives Student should be able t
Page 7 and 8: Gingiva Marginal/margin/free/unatt
Page 9 and 10: Gingival Sulcus Is the shallow
Page 11 and 12: Gingiva: Interdental papilla Fig.4
Page 13 and 14: Objectives Describe the normal
Page 15 and 16: Cell type of the gingival epitheliu
Page 17 and 18: Representative cells from the vario
Page 19 and 20: Figure 4-12 Human gingival epitheli
Page 21 and 22: Figure 4-14 Variations in gingival
Page 23 and 24: 1. GINGIVAL EPITHELIUM Bucco-lingua
Page 25 and 26: Oral epithelium of the gingiva
Page 27 and 28: Junctional Epithelium (JE) Str
Page 29 and 30: Junctional epithelium Inflamed junc
Page 31: Renewal of gingival epithelium Da
Page 35 and 36: Gingival Connective Tissue The maj
Page 37 and 38: Gingival Connective Tissue The
Page 39 and 40: Gingival collagen group Circular gr
Page 41 and 42: Gingival cells Fibroblasts
Page 43 and 44: Blood supply Supraperiosteal arter
Page 45 and 46: Repair of Gingival Connective Tissu
Page 49 and 50: Color The color of the attached
Page 51 and 52: Contour The contour or shape of
Page 53 and 54: Consistency The gingiva is firm an
Page 55 and 56: Consistency Microscopically, stipp
Page 57 and 58: 1 2 3 1 1. Healthy gingiva in the p
Page 59 and 60: Position Initial recession (left),
Page 63 and 64: Objectives Describe the struct
Page 65 and 66: Principal fibers of the periodontal
Page 67 and 68: The location of some of the princip
Page 69 and 70: Figure 5-1 Principal fibers of the
Page 71 and 72: Figure 5-3 Collagen microfibrils, f
Page 73 and 74: Figure 5-5 Transseptal fibers (F) a
Page 75 and 76: Figure 5-7 Epithelial rests of Mala
Page 77 and 78: Figure 5-9 Foramina perforating the
Page 79 and 80: Cellular Elements The epithelial r
Page 81 and 82: Objectives Describe the struct
Page 83 and 84:
Objectives Describe the struct
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Physical Functions Provision o
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Nutritional and Sensory Functions
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Figure 5-11 Microscopic view of rat
Page 91 and 92:
Table 5-1. Thickness of Periodontal
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Objectives Describe the types
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Distribution of cementum on the too
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Figure 5-13 Cellular cementum (CC)
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Objectives Describe the types
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Thickness of Cementum Cementum dep
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Figure 5-15 Cemental resorption ass
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Figure 5-17 Resorption of cementum
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ALVEOLAR PROCESS 12 June 2008 Year
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ALVEOLAR PROCESS The alveolar proc
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Figure 5-18 Mesiodistal section thr
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Cells and intercellular matrix Ost
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Figure 5-23 Deep penetration of Sha
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Figure 5-20 Relative proportions of
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Periosteum and Endosteum All b
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Figure 5-25 Interdental septa. A, R
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Contours Normally conforms to the
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Figure 5-28 Variation in the cervic
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Figure 5-29 Dehiscence on the canin
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Remodeling of Alveolar Bone Int
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mesial distal Figure 5-24 Bundle bo
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Occlusal Forces and the Periodontiu
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Figure 5-31 Atrophic periodontal li
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Figure 5-32 Vascular supply of monk
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REFERENCES/SUGGESTED READING Carra
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Lecture slides anatomy of periodontium 2008

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