10/29: Panoramic Positioning Issues

Question 1

Answer 1

ghost of glasses

Question 2

Answer 2

ghost of earrings

Question 3

Answer 3

ghost of lead apron

Question 4

Answer 4

ghost of hairpins

Question 5

Answer 5

dentures

Question 6

when taking a pano, should they remove dental appliances such as dentures/RPD?

Answer 6

yes

Question 7

what are the 5 parts of proper positioning?

Answer 7

teeth and jaw are sharply depicted
slight curve to occlusal plane
no air space obstructing maxillary roots
equal magnification
no ghost image of cervical spine

Question 8

Answer 8

to far forward

Question 9

what happens when you are too far forward?

Answer 9

cervical spine overlaps ramus
anterior teeth are small and narrow

Question 10

what happens when you are too far back?

Answer 10

anterior teeth are widen
inferior turbinates and meati are across maxillary sinuses

Question 11

Answer 11

too far back

Question 12

Answer 12

too far back

Question 13

this is when you have excessive curvature on the occlusal plane

Answer 13

chin down

Question 14

Answer 14

chin down

Question 15

Answer 15

chin up

Question 16

this is when you have a flat occlusal plane, or reverse

Answer 16

chin up

Question 17

this is when you have unequal magnification of the left and right side

Answer 17

head turned

Question 18

Answer 18

head turned to right

Question 19

Answer 19

head turned left

Question 20

what happens when you are slumped?

Answer 20

cervical spine ghost is too opaque

Question 21

Answer 21

slumped

Question 22

Answer 22

tongue not on roof

Question 23

Answer 23

partial panoramic image

Question 24

Answer 24

patient moved

Question 25

Answer 25

patient moved

Question 26

what is the cause of wide anterior teeth?

Answer 26

too far back

Question 27

what causes flat occlusal plane?

Answer 27

chin up

Question 28

what causes ghost image of cervical spine?

Answer 28

slumped

Question 29

what causes a double real image of the cervical spine?

Answer 29

too far forward

Question 30

what is the distortion if teh teeth are located outside of the central plane towards the rotational center?

Answer 30

stretched wide in a horizontal direction

Question 31

the hard palate is superimposed on the maxillary roots

Answer 31

chin up

Question 32

what occurs when you are too far forward?

Answer 32

anterior teeth are narrow
doubel cervical spine image

Question 33

what occurs when you are too far back?

Answer 33

condyles are cut off
inferior turbinate and meati are on maxillary sinus
anterior teeth widened

Question 34

the rami/condyles are tipped inward in

Answer 34

chin down

Question 35

when is the hyoid superimposed on the mandible?

Answer 35

chin down

Question 36

what occurs in chin down?

Answer 36

large occlusal curve
hyoid bone superimposed on mandible
condyles are close to or cut off
rami/condyles are tipped inwards

Question 37

what occurs in chin up?

Answer 37

flat occlusal or reversed
rami/condyles tipped laterally
hard palate superimposed on maxillary apices