OCB02-1019 Structure of cementum and alveolar bone Flashcards
What are the functions of the alveolar bone process?
Necessary for muscle attachment
Contains bone marrow for haematopoiesis
It has storage functions for calcium and phosphate ions
Plasticity and remodelling
What does the growth of the alveolar bone depend on?
Tooth eruption and root formation
What does the alveolar bone rely to for maintenance?
tooth retention because if a tooth is lost, that part of the bone will resorb
When does the alveolar bone initially develop?
In the second month of fatal life
What are the two kinds of bone in alveolar bone?
Compact and trabecular
Which bone has a higher surface area to mass ratio?
Trabecular
What is the purpose of compact bone?
Give attachment to the fibres of the periodontal ligament
What is bundle bone?
Another term for compact bone due to the bundles of fibres attaching from the periodontal ligament
What fibres of the periodontal ligament are embedded in the bundle bone?
Sharpey’s fibres
What are the arrangement of sharpey’s fibres?
They are perpendicular to the bone
What is lamina dura?
On the radiograph , the bundle bone is more radio dense as the thick bone is seen without trabeculations
What is the cribriform plate?
An opening in the alveolar bone which is perforated by blood vessels and nerve
What are the names of the 2 septums within the alveolar bone?
Interradicular septum
Interdental septum
What is interradicular septum?
Separates the individual roots of a multi rooted tooth
What is interdental septum?
Separates two individual teeth
What is the blood supply to the alveolar bone?
Periodontal
Alveolar
Supraperiostal/ mucogingival