-
______structures are easily penetrated by x-rays and appear dark gray to black.
Radiolucent
-
Radiolucent structures:
–Pulp
–PDL space
–Periapical abscess
–Bone marrow spaces
–Bone loss and defects
-
_____structures absorb or resist passage of x-rays and appear light gray to white.
Radiopaque
-
Radiopaque structures:
–Metals such as amalgam
–Newer composite restorations
–Enamel
–Dentin
–Compact or cortical bone
-
To recognize disease, the clinician must ?
- recognize the normal radiographic appearance and anatomy visible on radiographs.
- Alveolar bone
- Cortical bone
- Alveolar bone
- Lamina dura
- Periodontal ligament space
- Cementum
-
Cortical Bone in Maxilla is ____
a thin shell.
-
Cortical bone in Mandible is?
- dense;
- appears as a thick white border.
-
normal level of crest of the Alveolar Bone is?
about 2 mm apical to the CEJ.
-
If the coronal bone level is within 3 mm of the CEJ, it is considered normal?
yes
-
Crestal contour of the Interdental Bone is a good indicator of?
- periodontal health.
- The contour should be parallel to a line drawn between CEJs of adjacent teeth.
- Surfaces of the bony crests are smooth and covered with a thin layer of cortical bone.
- Seen as a thin white line on radiograph
-
When the CEJs of adjacent teeth are of the same level, the crest of the interproximal bone will have a?
horizontal contour.
-
When one of the adjacent teeth is tilted or erupted to a different height, the crest of the interproximal bone will have a?
vertical contour.
-
The crest of the interdental septa between posterior teeth should be _______.
rounded or flat.
-
The crest of the interdental septa between anterior teeth should be _____.
thin and pointed.
-
Lamina Dura:
- Thin layer of dense bone that lines a normal tooth socket
- Appears as a continuous white line around the tooth root
- Radiographically, it is continuous with cortical bone layer of the crest of the interdental septa
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