intraoral radiographic techniques, infection control and quality analysis

Question 1

full mouth series consists of:

Answer 1

14-17 periapical images

4 bitewing images

Question 2

criteria for quality images

Answer 2

adequate diagnostic quality
completely covers area of interest
least amount of magnification and distortion
optimal density and contrast

Question 3

what are the 2 types of periapical radiography techniques?

Answer 3

paralleling

bisecting angle technique

Question 4

in paralleling the image receptor is parallel to what?

Answer 4

long axis of tooth

Question 5

long source-object distance __________ magnification

Answer 5

reduce

Question 6

for maxillary periapicals, positioning tube head should face _________ or a ________ vertical angulation

Answer 6

downwards;positive

Question 7

for mandibular periapicals, positioning tube head should face _________ or a ________ vertical angulation

Answer 7

upwards; negative

Question 8

cieszynski’s rule of isometry

Answer 8

2 triangles are equal if they share one complete side and have 2 equal angles

Question 9

if all conditions are met with bisecting angle technique then the is image theoretically:

Answer 9

the same size as the object without distortion

Question 10

barrier protocol: plastic bags to cover what 3 things?

Answer 10

chair headrest
xray tube head
exposure switch

Question 11

if something comes in contact with patient body fluid, use ____________

Answer 11

disinfectant

Question 12

what are the appropriate operator attire to take radiographs?

Answer 12

gloves
face mask
green colored coat

Question 13

all surfaces not protected with a barrier to be

Answer 13

wiped down with a caviwipe

Question 14

8 steps of starting a radiographic exam

Answer 14

1. get procedure approved by faculty
2. explain procedure
3. drape patient with apron and thyroid shield
4. wash hands, wear gloves and face mask
5. examine oral cavity for open sores or tori
6. place film in positioning instrument and place in oral cavity
7. position PID and go behind the barrier
8. press the exposure button

Question 15

anterior teeth: what size, direction and color

Answer 15

size 1, vertical, blue

Question 16

posterior teeth: size, direction and color

Answer 16

size 2, horizontal, yellow

Question 17

___________ are preferred for anterior teeth

Answer 17

periapicals

Question 18

bitewings are used in detection of what 3 things?

Answer 18

interproximal caries
marginal periodontal bone loss
interproximal calculus

Question 19

what is the only PID that needs to be configured for right and left?

Answer 19

YELLOW

Question 20

what are special circumstances for taking radiographs

Answer 20

gag reflex
infection
trauma
mentally and physically disabled patients
pregnancy 
edentulous patients

Question 21

slob rule

Answer 21

same lingual opposite buccal

Question 22

the object that moves in the SAME direction is _______: the object that moves in the OPPOSITE direction is _______.

Answer 22

lingual, buccal

Question 23

by changing _________ on the second image, one can see which object is on the buccal aspect

Answer 23

direction of central ray