BITEWINGS

Question 1

why request a bitewing

Answer 1

detect caries
monitor caries progression
assess perio status/bone levels
assess existing restorations

Question 2

what does a caries risk assessment determine in regards to radiographs

Answer 2

how often they get radiographs taken
high, moderate or low risk?

Question 3

how often should bitewings be taken based on caries risk

Answer 3

high risk child - every 6 months
moderate risk child - annually
low risk child - 12-18 months deciduous (child teeth), 2 or more years permanent

Question 4

describe a horizontal bitewing

Answer 4

long axis of film is in the horizontal plane
usually 1 radiograph per side
should see distal 4 to mesial 8
place bitw block in the middle of the 6
must show crown and 1/3rd of the root

Question 5

describe a vertical bitewing

Answer 5

long axis of receptor in vertical plane
irradiates the paient 4 times
can be uncomfortable for patient
will show more of the root but not the apex

Question 6

what colour is the bitewing holder

Answer 6

red

Question 7

when should what receptor size be used (for a bitewing)

Answer 7

adult - 2
child over 10 - 2
child under 10 - 1

Question 8

what technique can be used if you cant get a bitewing on a child

Answer 8

lateral oblique
reduced detail