Periodontal Ligament Flashcards
What is an amalgam tatoo?
Focal Argyrosis
Where does the vascular supply for the periodontium enter from?
Apical vessels
penetration through alveolar bone
anastomosis from the gingiva
What type of cellular elements do you find in the PDL?
Connective Tissue Cells
Defense cells
Epithelial Rest cells
Neurovascular elements
What type of cells make up the connective tissue cells in the PDL?
Fibroblasts
Cementoblasts
Cementoclasts
Osteoblasts
Osteoclasts
What type of cells make up the defense cells?
Mast Cells
Macrophages
What are the epithelial rest cells in the PDL?
Rest cells of Malassez
What happens when the rest cells of Malassez are irritated?
Can become cysts
Eventually becoming abcesses
What is the function of the neurovascular elements?
important for allowing proper placement of tongue, cheeks, and teeth during mastication
What is cementum?
Thin, mineralized tissue that covers the root surface.
light yellow in color
covers the dentin
bone-like
Cementum is more resistant to resorption then bone. T or F
TRUE
important in tooth movement
moving too quickly - the tooth will begin to resorb becuase the PDL and capillaries have been crushed
What is acellular cementum?
Primary Cementum - coronal
What is cellular cementum?
Secondary cementum - apical
When removing cemtum what can result?
Higher caries risk
More sensitive
What is the 60-65% cemento-enamel junction?
cementum overlaps enamel
