Alveolar bone Flashcards
Where is trabecular bone present?
in apical 1/3 of alveolar process or under alveolar crest in interdental area
Cortical bone
outer layer of bone, covered by periosteum and endosteum, highly organized, neurovacscular supply through Haversian system
Which type of bone has a higher mineral content?
cortical higher than trabecular
What is the main functional unit of cortical bone?
Haversion system
What is the separation b/t osteons?
interstitial lamellae
What are the connections b/t osteons?
volkmann’s canals
Trabecular (cancellous, spongy) bone
in interior of bone, porous, thin rods and plates connected together, space filled with bone marrow in holes
What are the cells b/t sharpey’s fibers?
fibroblasts, mesenchymal stem cells and osteoprogenitors, vascular cells
What are the cells on bone surfaces?
osteoblasts and bone lining cells
collagen related proteins in osteoblasts
type I, III, V
What is the most abundant cell type in bone?
osteocyte
What is the largest bone cell?
osteoclasts, often on surface
cell types and locations in alveolar bone
MSCs- bone marrow, PDL; osteoblasts - bone surfaces, bone lining cells - surface, osteocyte - inside matrix, osteoclast - surfaces-after recruitment from bone marrow or blood circulation
risk factors for alveolar bone loss
periodontal disease (most common), functional disuse, pathology (tumor, infection), osteoporosis, medication side effects, trauma, excessive ortho force
