the bone that directly surrounds and supports the teeth
alveolar bone
What does the alveolar bone start out as?
the dental sac
alveolar bone is__________% mineralized
60
true or false. Alveolar bone has sharpey's fibers that embed in the bone to anchor the teeth
true
the bone beneath the alveolar bone, it forms the body of the mandible and maxilla
basal bone
the individual tooth socket (without a tooth)
alveolus
compact bone that lines each alveolus
alveolar bone proper
What is the alveolar bone proper called when you are looking at in on a radiograph?
lamina dura
What is the lamina dura called when you are looking at it for real, and not on a radiograph?
alveolar bone proper
the most cervical (or highest) rim of the bone
alveolar crest
Where should the alveolar crest be in relation to the CEJ?
1-2mm apical of the CEJ
compact bone that makes up the facial and lingual walls of the bone
cortical bone
cancellous bone that fills the space between the compact bone (a lace-like pattern)
trabecular bone
the bone between each tooth - seen on PA x-rays
interdental septum
the bone between the roots - seen in PA x-rays
interradicular septum
What are 4 clinical considerations with alveolar bone?
orthodontic movement
edentulous patient
periodontal disease
bone grafts
clinical consideration with alveolar bone, the orthodontic appliances put pressure on the tooth
orthodontic movement
What is the reason orthodontics works?
because of osteoclasts and osteoblasts breaking down and rebuilding bone
cells that break down bone
osteoclasts
cells that rebuild the matrix of the bone (but do not mineralize it)
osteoblasts
true or false. osteoblasts rebuild the matrix of the bone and mineralize it as well
false, osteoblasts rebuild the matrix of the bone, but they do not mineralize it
Why is it so easy for the teeth to move back after you've had braces?
because osteoblasts rebuild the matrix of the bone, but it is not mineralized
In orthodontics, the tooth actually moves through the bone while osteoclasts on the______side______ ______the bone, and osteoblasts___________the bone on the___________side
compressed
break down
rebuild
opposite
What will occur if the tooth is moved to quickly in orthodontics?
root resorption
What will happen when the alveolar bone doesn't have the constant stimulation of chewing and speaking?
it will start to resorb
alveolar bone resorption is a big problem for____________patients
edentulous
Are implants or dentures better for the edentulous patient? Why?
implants, because they maintain the stimulation that the alveolar bone needs better than dentures
What is the 'magic' metal that our body will not reject so it is safe to use for implants?
titanium
over-response of the immune system that breaks down the bone
periodontal disease
your body knows that infections from plaque and calculus build up on your teeth can go_____________, so it'd rather get rid of the tooth than die of infection
systemic
true or false. your body would rather get rid of a tooth that is causing infection than die of that infection
true
In periodontal disease, your body sends out_____________to break down the bone
osteoclasts
bone bait, adding extra matrix in the bone
bone graft
When are bone grafts usually done?
after extractions when you plan to place an implant
What does adding extra matrix in bone grafts do for osteoblasts?
gives them a place to go and start secreting osteoid
