More Radiographic Interpretation Flashcards
how do you describe lesions
site
size
shape
margins
internal structure
effect on adjacent anatomy
number
what do you say about site
where it is
relationship to teeth/IAN canal/maxillary sinus
what do you say about the size
measure dimensions
describe boundaries
what shapes can lesions take on
rounded/scalloped/irregular
unilocular/pseudolocular/mulitlocular
what can you say about the margins
well defined and corticated
non-corticated
poorly defined and blending into normal anatomy
ragged/moth-eaten
what does a corticated lesion suggest
benign lesions
what does a moth-eaten lesion suggest
malignancy
what would radiolucent lesions suggest
resorption of bone
decreased mineralisation of bone
decreased thickness of bone
replacement of bone with abnormal, less mineralised tissue
what would radiopaque lesions suggest
increased thickness of bone
osteosclerosis
presence of abnormal tissue
mineralisation of normally non-mineralised tissues
if the lesion is in the bone what can happen to the bone
displacement of cortices
perforation of cortices
sclerosis of trabecular bone
if the lesion is in the IAN canal what can happen to the canal
displacement
erosion
compression
if the lesion in beside the teeth what can happen to the teeth
displacement
impaction
resorption
loss of lamina dura
widening of the PDL space
hypercementosis
when would you suspect that there could be a syndrome when you see lesions
when there are more than 2 lesions
what can the causes of periapical radiolucencies be
periapical granuloma
periapical abscess
radicular cyst
perio-endo lesions
cemento-osseous dysplasia
surgical defect
fibrous healing defect
ameloblastoma
what are the common jaw radiopacities
idiopathic osteosclerosis
sclerosing osteitis
hypercementosis
buried retained roots
what is idiopathic osteosclerosis
localised area of increased bone density of unknown cause
what is the radiographic presentation of idiopathic osteosclerosis
well-defined radiopacity
less than 2cm
appear next to teeth but with no displacement of teeth
what is sclerosing osteitis
localised area of increased bone density in response to inflammation
what is the radiographic presentation of sclerosing osteitis
well defined/poorly defined
variable in shape
directly associated with source of inflammation (near apex of necrotic tooth)
what is hypercementosis
excessive deposition of cementum around root
what does hypercementosis mean for extractions
makes it more difficult
what is the radiographic presentation of hypercementosis
single or multiple teeth
homogenous radiopacity continuous with root surface
PDL space of tooth extends around periphery
margins well defined and smooth
what are the radiographic features of buried retained roots
diffuse radiopacity or obvious root
