Periodontal Ligament Quiz PDF
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Uploaded by SplendidNephrite8490
South Bank University
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Summary
This document contains a quiz on the periodontal ligament, including questions about its fibers, functions, and related processes. It includes a table with various aspects of the ligament and further details including its formative and resorptive functions, which are critical to its width maintenance. The document is likely a study aid or practice material for a course in dental or biological sciences.
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Periodontal Ligament quiz Dental implants have which of the following fibres? A. Alveologingival fibers and circular B. Circular group C. Principle fibres D. All of the above ANSWER: A The periodontal ligament is vascularized laterally via fenestrations in the alveolar bo...
Periodontal Ligament quiz Dental implants have which of the following fibres? A. Alveologingival fibers and circular B. Circular group C. Principle fibres D. All of the above ANSWER: A The periodontal ligament is vascularized laterally via fenestrations in the alveolar bone. Apically, the gingival vascular supplies PDL. A. True/True B. False/True C. False/false D. True/false The periodontal ligament has multiple functions and is surrounded by scaffolding fibres. Complete the following table: Fibre Location Origin Insertion Role Alveolar Beneath JE Cementum, Runs downwards Prevents extrusion of tooth from crest below CEJ & outwards & socket and resists lateral, tilting & inserts into intrusive tooth displacement alveolar crest Inter- Found in multi Cementum Inter-radicular Resists vertical & lateral radicular rooted teeth septum movement fibres Tipping, torquing & luxation are also resisted Periodontal disease – total loss of fibres Explain the formative and resorptive function of the periodontal ligament. The width of periodontal ligament must be maintained. Therefore it needs to be formative & resorptive. Formative – contains cell builders, cementoblasts and osteoblasts Resorption of hard tissues of periodontium – repair bone & cementum, degrade old cells, maintain width of PDL space. The periodontal ligament is rich in various types of cells. Provide two examples of resorptive cells in the periodontal ligament Osteoclasts Fibroblasts Cementoclasts A B C D A Gingiva B Cementum C Periodontal Ligament D Alveolar bone
