February
March 2008
the groups of fibers are named alveolar crest, horizontal, oblique, periapical, and interradicular fibers.
the nerve supply generally enters from the bone apical to the tooth and forms a network around the tooth toward the crest of the gingiva.
when pressure is exerted on a tooth, such as during chewing or biting, the tooth moves slightly in its socket and stretches the periodontal ligaments.
the nerve fibers can then send the information to the central nervous system for interpretation.
the alveolar bone is the bone of the jaw which forms the alveolus around teeth.
like any other bone in the human body, alveolar bone is modified throughout life.
osteoblasts create bone and osteoclasts destroy it, especially if force is placed on a tooth.
as is the case when movement of teeth is attempted through orthodontics, an area of bone under compressive force from a tooth moving toward it has a high osteoclast level, resulting in bone resorption
an area of bone receiving tension
from periodontal ligaments attached to a tooth moving away from it has
a high number of osteoblasts, resulting in bone formation.
the gingiva ("gums") is the mucosal tissue that overlays the jaws.
there are three different types of epithelium associated with the gingiva: gingival, junctional, and sulcular epithelium.
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