Radiology Abnormalities Flashcards
what is a supplemental tooth
a copy of a tooth
what is the term for small teeth
microdont
what is the term for when there is a supernumerary distal to the dentition
distodens
why is there a bad long-term prognosis of dens in dente teeth
caries and pulp necrosis risk higher
what is the age range for 8s to start calcifying and appearing on radiographs
8-10yrs
what is the age range for eruption of second premolars
11-13 years
on a radiograph, how can you tell if a tooth was extracted rather than developmentally absent
roots are spaced normally but the crown will be tilted into the space
what is the term for when a tooth is upside down
inverted
what is the term for when teeth have swapped places
transposed
what is the difference between gemination and fusion
gemination = develops from 1 bud
fusion = 2 buds joined
what is taurodontism
root furcations are placed far apically giving the teeth a tall appearance
what treatment does taurodontism complicate and how
RCT - canal openings very deep
extraction - difficult to grasp furcations
if a tooth has thin enamel what condition is this
amelogenesis imperfecta
what issues can amelogenesis imperfecta give
caries
dentine hypersensitivity
discolouration
what can cause dilaceration of permanent tooth
trauma to primary tooth
infection to primary tooth
cyst formation
if there are a lot of teeth impacted and a lot of supernumerary teeth what syndrome might this suggest
cleidocranial dysplasia
what non-dental feature is present in cleidocranial dysplasia
absence of clavicles
how can we tell that the condition is amelogenesis imperfecta causing abnormal morphology and not caries?
unerupted teeth are affected too
caries has a distinct pattern
what do enamel pearls look like on radiographs
round radiopacities
what are the consequences of enamel pearls
increased perio disease as plaque retentive factors
complicate extraction
if on a radiograph the canals of teeth are not seen/canal obliteration what condition is this significant of
dentinogenesis imperfecta
what other condition is type 1 dentinogenesis imperfecta associated with
osteogenesis imperfecta
if someone has severe hypodontia and conical teeth what condition does this suggest
ectodermal dysplasia
