Module 2 Flashcards
(29 cards)
____________ surrounding roots
specialized connective tissue
what connects the tooth/cementum with the bone
PDL
What is the suspensory cushion between the tooth and bone?
PDL
how many mm of space between bone and tooth?
.5 to.25 mm
What is the connective tissue complex primarily filled with
fiber bundles
How many fiber bundles are in each square 1mm of cementum surface
28,000
What are the supportive functions of the PDL?
suspends/cushions the tooth in the socket
What are the sensory functions of the PDL?
PDL suppliked with sensory nerve fibers. Transmits pressure and pain
What are the nutritive functions of the PDL?
PDL helps supply nutrients to the cementum and bone
What are the formative and remodeling functions of the PDL?
ongoing remodeling of collagen and bone and cementum deposition
Fiber bundles have ___________ orientations and insertions and surround the tooth
specific
What transmits occlusal forces to bone
PDL
The PDL _________ occlusal forces
resists
The PDL does not protect vessels and nerves T/F
False
What are the 5 principle PDL fiber groups?
Alveolar Crest, Horizontal, Oblique, Apical, Interradicular
What are interradicualr fibers for?
mulitrooted teeth
WHat fiber holds the tooth in the socket and transmits occlual force
Oblique
what is the 6th principal fiber group we should know?
transseptal
What are sharpeys fibers?
the ends of the PDL fiber bundles that are embedded in the cementum on one side and bone
Do the principal fiber groups have the abliily to reattach?
yes, if they are not destroyed by diesease
What are the Components of the PDL?
cellular, extracellular
Whare the components of the celluar part of the PDL?
- defense cells (macrophage, neutrophils lymphocytes
- Fibroblasts, cementoblasts, osteoblasts, rests of malassez
What are the Extracellular components of the PDL?
- cells associated with neurovascular elements
- FIbers
- ground substance
What is the ground substance of the extracelluar component of the PDL?
fills spaces between fiber and cells
