L2 Flashcards
Junctional epithelium derived from ___ during tooth eruption
Reduced dental epitheum
Junctional vs Oral epithelium Size of cells Intercellular space Desmosomes Keratinization
Size of cells JE>OE
Intercellular space JE>OE
Desmosomes OE>JE
Keratinization JE has potential
Fibers of Lamina propria (4)
Where
Collagen: most abundant
Reticulin: basement membrane and blood vessels
Oxytalan: pdl
Elastic: blood vessels
Periodontal ligament
Vascularity
Cellularity
Richly Vascular
Cellular CT
Cementum similar to bone except
No Blood vessels
No lymph
No innervation
No resorption/remodeling
Cemental fibers
Intrinsic vs extrinsic
Intrinsic: parallel to root, produced by cementoblasts
Extrinsic: Sharpeys fibers, produced by fibroblasts
Different forms of cemental fibers
Acellular extrinsic: Coronal/middle portion
Cellular mixed stratified: Apical portion, furcations
Cellular intrinsic: resorption lacunae
Cementum thickness
Cervical 20-50um
Apical 150-250um
Osteoid consists of
Collagen fibers
glycoproteins
Proteoglycans
Lymph node locations
Submental
Deep cervical
Submandibular
Jugulodigastric
JE widest vs most narrow
What is it during tooth eruption
Widest at coronal
Thin towards CEJ
Reduced dental epithelium during tooth eruption
Fastest turnover rate
Junctional epithelium
