The vascular supply of the periodontal ligament is characterized as______________?
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Answer: D. A net like plexus that runs closer to the bone than to the cementum
Explanation
Blood vessels in the periodontal ligament form a net-like plexus closer to bone. This vascular arrangement favors the adjacent alveolar bone over cementum. The plexus supplies continuous nutrition to the surrounding supporting structures. The periodontal ligament is exceptionally well-vascularized to handle mechanical stress. Vessels enter the ligament from alveolar bone perforations and apical branches. Capillary networks cushion the tooth against heavy masticatory loading forces.
Orthodontic force application compresses these vessels, initiating bone remodeling. Reduced vascular supply can compromise periodontal health and tissue healing. Clinicians evaluate periodontal vasculature when treating advanced gum disease. Vascularity is not greatest specifically in the middle third of single-rooted teeth. Multi-rooted teeth feature complex vascular distributions around furcation areas. A plexus running closer to cementum incorrectly describes the natural anatomy.
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Answer: C. Circum pulpal dentin
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Answer: A. Cell free zone
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Q3. The organic matrix lining calcified dentinal tubules is known as_______________?
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Answer: C. Lamina limitans
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Answer: B. Pseudo stratified columnar and cilliated
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Q5. Stimulus transmission across dentin is accomplished through______________?
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Q6. Frequent moistening of the vermilion border is necessary because_____________?
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Answer: C. It contains less number of sebaceous glands
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