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Questions and Answers
Dentogingival fibers extend from the alveolar crest into the gingiva.
Dentogingival fibers extend from the alveolar crest into the gingiva.
False
The interstitial space between the groups of fibers is a true space with no content.
The interstitial space between the groups of fibers is a true space with no content.
False
Oxytalan fibers are larger in diameter compared to collagen fibers in the periodontal ligament.
Oxytalan fibers are larger in diameter compared to collagen fibers in the periodontal ligament.
False
The dentoalveolar group of fibers surrounds the roots of the teeth.
The dentoalveolar group of fibers surrounds the roots of the teeth.
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Circular fibers around the teeth are part of the dentoperiosteal group.
Circular fibers around the teeth are part of the dentoperiosteal group.
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The main function of the interstitial space in the periodontal ligament is to provide structural support during mastication.
The main function of the interstitial space in the periodontal ligament is to provide structural support during mastication.
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The periodontal ligament is a connective tissue that attaches the enamel to the alveolar bone.
The periodontal ligament is a connective tissue that attaches the enamel to the alveolar bone.
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Cells in the periodontal ligament are not involved in the formation and resorption of hard tissues in the periodontium.
Cells in the periodontal ligament are not involved in the formation and resorption of hard tissues in the periodontium.
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The periodontal ligament lacks blood vessels which provide nutrition for the surrounding structures.
The periodontal ligament lacks blood vessels which provide nutrition for the surrounding structures.
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The nerve supply of the periodontal ligament does not play a role in proprioception.
The nerve supply of the periodontal ligament does not play a role in proprioception.
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Sharpey's fibers are not embedded in the cementum matrix within the periodontal ligament.
Sharpey's fibers are not embedded in the cementum matrix within the periodontal ligament.
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The interstitial space within the periodontal ligament remains constant during mastication.
The interstitial space within the periodontal ligament remains constant during mastication.
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The periodontal ligament provides attachment of the teeth to the alveolar bone via the pulp.
The periodontal ligament provides attachment of the teeth to the alveolar bone via the pulp.
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The periodontal ligament connects with the tissue of the enamel.
The periodontal ligament connects with the tissue of the enamel.
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The periodontal ligament is composed of fibers, cells, and intracellular substances.
The periodontal ligament is composed of fibers, cells, and intracellular substances.
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The interstitial spaces in the periodontal ligament contain blood vessels and nerve trunks.
The interstitial spaces in the periodontal ligament contain blood vessels and nerve trunks.
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Fibroblasts are not commonly found in the periodontal ligament.
Fibroblasts are not commonly found in the periodontal ligament.
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Osteoplasts, osteoclasts, odontoclasts, and epithelial rests of Malassez are all present in the periodontal ligament.
Osteoplasts, osteoclasts, odontoclasts, and epithelial rests of Malassez are all present in the periodontal ligament.
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Study Notes
Periodontal Ligament Structure
- Dentogingival fibers extend from the alveolar crest into the gingiva, supporting gum tissue.
- The interstitial space between fiber groups is a true space void of content, contributing to ligament integrity.
- Oxytalan fibers possess a larger diameter than collagen fibers in the periodontal ligament, highlighting their distinct roles.
- Dentoalveolar fibers encircle the roots of teeth, providing secure attachment to the surrounding structures.
- Circular fibers around teeth are part of the dentoperiosteal group, aiding in stability against mastication forces.
Functionality
- The primary role of the interstitial space within the periodontal ligament is to offer structural support during mastication.
- The periodontal ligament connects the enamel of the teeth to the alveolar bone, vital for dental health.
- Cells within the periodontal ligament do not participate in the formation or resorption of the periodontium's hard tissues, indicating specialized functions of other cells.
Vascular and Nerve Supply
- The periodontal ligament is avascular, lacking blood vessels for nutrition, relying instead on surrounding tissues.
- There is no involvement of the nerve supply of the periodontal ligament in proprioception, suggesting a limited sensory role.
Additional Cellular Components
- Sharpey's fibers are not embedded within the cementum matrix of the periodontal ligament, contrasting with typical expectations.
- The interstitial space remains constant during mastication, indicating resilience under pressure.
- The periodontal ligament plays a crucial role in anchoring teeth to the alveolar bone through interactions with the dental pulp.
- It is composed of fibers, cells, and intracellular substances, underscoring its complex makeup.
- The interstitial spaces contain blood vessels and nerve trunks, critical for sensory and nutritional support.
- Fibroblasts are typically rare within the periodontal ligament.
- Presence of osteoplasts, osteoclasts, odontoclasts, and epithelial rests of Malassez in the periodontal ligament indicates its dynamic cellular environment.
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Description
Learn about the periodontal ligament, a component of the periodontium responsible for attaching teeth to the alveolar bone. Explore its structure, function, development, and composition of fibers, cells, and intercellular substance.
