What is a lamina dura?
The lamina dura is the hard bony lining of the alveolus (Fig. 1), or socket, of a tooth, and to- gether with the periodontal ligament and the cementum which coats the tooth root it forms the attachment apparatus of the tooth.
What is the lamina dura compact bone?
Lamina dura is compact bone that lies adjacent to the periodontal ligament, in the tooth socket. The lamina dura surrounds the tooth socket and provides the attachment surface with which the Sharpey's fibers of the periodontal ligament perforate.
Why is it called lamina dura?
Alveolar bone can be divided into two main parts: a thin layer of compact (radiodense) bone (the 'cortex' of alveolus) that lines the alveolus proper, in which Sharpey's fibers insert, that is radiographically termed the lamina dura (lamina dura denta).
Is lamina dura radiolucent?
The radiolucency lamina dura below the crown, which is the shadow of cortical bone, was seen to be thick in the young, but not prevalent in the elderly.
What is alveolar crest?
The alveolar crest is the most cervical rim found in the alveolar bone proper. When it is healthy, the alveolar crest is slightly apical to the cementoenamel junction (CEJ) by about 1.5-2 mm. The alveolar crests of the adjacent teeth are also uniform in height along the jaw when they are healthy.
What bone forms most of the lamina dura?
Alveolar bone proper Alveolar bone proper appears on a radiograph as a thick radiopaque line adjacent to the alveolar socket, termed the lamina dura. The alveolar bone proper provides the attachment site for Sharpey fibers from the PDL.
What is gingiva?
Listen to pronunciation. (JIN-jih-vuh) The tissue of the upper and lower jaws that surrounds the base of the teeth. Also called gums.