Lecture 5: Interpretation of Dental Radiographs
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42 Terms
what are the arrows pointing to?
mandibular symphysis
what is 1?
middle mental foramen
what is 2?
caudal mental foramen
high peaks =
rostral direction
which way is rostral in this image?
to the left
what are the arrows pointing to?
palatine fissures
which way is rostral in this image?
to the left
what are the arrows pointing to?
nasal surface of the alveolar process of the maxilla
what are the arrows pointing to?
large 3-rooted tooth → 4th maxillary premolar
what is this showing?
large concave root shape → the buccal aspect and lingual aspect
what is this?
% attachment loss → 11/15 = 0.73 or 73%
what is the blue dotted line?
original alveolar margin
what is the red dotted line?
alveolar margin after periodontal disease attachment loss
attachment loss on mandibular incisor radiographs are often over estimated due to
lack of mineralization around mandibular symphysis
what is this showing?
attachment loss on mandibular incisor
what is this?
apical lucency
what is the top arrow pointing to?
furcation
what is the bottom arrow pointing to?
vertical bone loss
what is the arrow pointing to?
furcation bone loss
what bone loss pattern is this?
horizontal bone loss
what bone loss pattern is this?
vertical bone loss
endodontic disease
asymmetrically large root canal and pulp chamber
evidence of periapical lucency
loss of lamina dura
what is this showing?
endodontic disease
what is this?
furcation
what is this showing?
normal lamina dura
what are the arrows pointing to?
periapical lucency
what stage of tooth resorption is this?
stage 2
what stage of tooth resorption is this?
stage 3
what stage of tooth resorption is this?
stage 4a
what stage of tooth resorption is this?
stage 4b
what stage of tooth resorption is this?
stage 4c
what stage of tooth resorption is this?
stage 5
tooth resorption type 1
periodontal ligament space apparent
extract tooth
use open, surgical technique
what type of tooth resorption is this?
type 1
tooth resorption type 2
narrowing or disappearance of the periodontal ligament space in at least some areas
decreased radiopacity of part of the tooth
crown amputation with intentional root retention indicated
what type of tooth resorption is this?
type 2
what type of tooth resorption is this?
type 3
top arrow → extract the root-segment
bottom arrow → crown amputation for this root segment
tooth resorption in dogs
most seen in mandibular premolars
often begins in the roots
may be internal or external resorption
if it doesn’t extend near or above the level of gingiva, can monitor
if it extends into crown or is communicating with oral cavity, extract → painful
roots can be ankylosed
what is this showing?
tooth resorption
what is this?
fractured root tips discovered prior to extraction
what is this image showing?
dilacerated mesial root
apex of mesial very close to ventral cortex of mandible
fracture risk!
what is this showing?
calculus is the only thing holding the tooth in