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29 Cards in this Set
- Front
- Back
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Periodontal Ligament
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provides attachment of teeth to surrounding alveolar bone by way of cementum; organized fibrous CT, maintains gingiva to teeth
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Additional Functions of PDL
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transmits occlusa; forces from teeth to bone, allows for movement and acrts as a shock absorber
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blood vessels
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provides nutrients for cementum and alveolar bone
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What all is supplied to the PDL?
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vascular supply, lymphatic supply; enter apical foramen of tooth to supply pulp
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most comon cell in PDL
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fibroblasts (protien)
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Principal Fibers
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most common fiber in PDL; distribute forces durring speech and mastication
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Sharpley's Fibers
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ends of principal fibers insert in cementum at 90 degree angle
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Alveolodental Ligaments
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main principal fiber/ resists rotational forces/ twisting of tooth in alveolus 5 types- alveolar crest, horizontal, oblique, apical, interradicular
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Interdental Ligament/Transseptal
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resist rotational forces & holds teeth interproximal contact
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Gingival Fiber Group (subgroups of PDL)
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supports marginal gingival tissue/ circular around tooth
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Clinical Consideration of PDL
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PDL widens as result of traumatic forces of occlusion (seen on xrays); all or a few teeth
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Fiber groups in periodontal disease
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fiber grou ps become disorganized and attachments are lost to alveolar bone and or cementum when sharpeys fibers are lost by resorption of these two tissues
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Gingiva
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firm, pink tissue that surrounds the maxillary and mandibulat teeth in the alveoli and covers the alveolar processes
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Attached Gingiva
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tightly adhears to bone around roots of teeth; MASTICATORY MUCOSA; in health-pink firm, immobile, stippeling
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Unattached or free gingiva
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forms cuff aroung tooth (marginal)
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Gingival margin or free gingival crest
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most superficial portion easily seen/follows scalloped pattern of alveolar bone/mobile
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Interdental gingiva or papilla
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extensionj of attached gingiva between adjacent teeth/ prevents food impaction
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Col
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a nonvisible concave area of interental gingiva between the facial and lingual gingival surfaces apical to the contact area of the teeth
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Free gingival Groove
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line of demarcation that divides free gingiva from attached gingiva
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Gingival Sulcus
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inner surfave of free gingival
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Mucogingival Junction
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scalloped, line of demarcation between attached gingiva and alveolar mucosa
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gingival Fiber Groups
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support marginal gingival tissues to maintain their relationship to the tooth. 5 types; circular, dentogingival ligament, alveologingical, dentoperiosteal
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Circular
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helps maintain gingival integrity
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Dentogingival ligament
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helps maintain gingival integrity possibly of marginal gingiva
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Alveologingival
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Attach gingiva to alveolar bone
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Dentoperiosteal
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anchor tooth to bone and protect PDL
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Gingival Recession
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apical migration of gingival margin as a result of perio. disease, tooth position, abrasion, strong frenal attach. abfraction, aging
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gingiva HYPERplasia
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overgrowth of interproximal gingiva as a result of medications, genetic disorders and systemic disease
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Gingival Edema
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swelling of gingival tissues as result of periodontal disease and trauma (inflammed, looks bolbous, reversable)
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