Radiology Abnormalities

Question 1

what is a supplemental tooth

Answer 1

a copy of a tooth

Question 2

what is the term for small teeth

Answer 2

microdont

Question 3

what is the term for when there is a supernumerary distal to the dentition

Answer 3

distodens

Question 4

why is there a bad long-term prognosis of dens in dente teeth

Answer 4

caries and pulp necrosis risk higher

Question 5

what is the age range for 8s to start calcifying and appearing on radiographs

Answer 5

8-10yrs

Question 6

what is the age range for eruption of second premolars

Answer 6

11-13 years

Question 7

on a radiograph, how can you tell if a tooth was extracted rather than developmentally absent

Answer 7

roots are spaced normally but the crown will be tilted into the space

Question 8

what is the term for when a tooth is upside down

Answer 8

inverted

Question 9

what is the term for when teeth have swapped places

Answer 9

transposed

Question 10

what is the difference between gemination and fusion

Answer 10

gemination = develops from 1 bud
fusion = 2 buds joined

Question 11

what is taurodontism

Answer 11

root furcations are placed far apically giving the teeth a tall appearance

Question 12

what treatment does taurodontism complicate and how

Answer 12

RCT - canal openings very deep
extraction - difficult to grasp furcations

Question 13

if a tooth has thin enamel what condition is this

Answer 13

amelogenesis imperfecta

Question 14

what issues can amelogenesis imperfecta give

Answer 14

caries
dentine hypersensitivity
discolouration

Question 15

what can cause dilaceration of permanent tooth

Answer 15

trauma to primary tooth
infection to primary tooth
cyst formation

Question 16

if there are a lot of teeth impacted and a lot of supernumerary teeth what syndrome might this suggest

Answer 16

cleidocranial dysplasia

Question 17

what non-dental feature is present in cleidocranial dysplasia

Answer 17

absence of clavicles

Question 18

how can we tell that the condition is amelogenesis imperfecta causing abnormal morphology and not caries?

Answer 18

unerupted teeth are affected too
caries has a distinct pattern

Question 19

what do enamel pearls look like on radiographs

Answer 19

round radiopacities

Question 20

what are the consequences of enamel pearls

Answer 20

increased perio disease as plaque retentive factors
complicate extraction

Question 21

if on a radiograph the canals of teeth are not seen/canal obliteration what condition is this significant of

Answer 21

dentinogenesis imperfecta

Question 22

what other condition is type 1 dentinogenesis imperfecta associated with

Answer 22

osteogenesis imperfecta

Question 23

if someone has severe hypodontia and conical teeth what condition does this suggest

Answer 23

ectodermal dysplasia