Techniques 1

Question 1

name 3 types of intra-oral radiographs

Answer 1

peri-apical
bitewing
occlusal

Question 2

what can u see in a peri-apical?

Answer 2

See from crown to root of teeth

Question 3

what can u see in a horizontal bitewing?

Answer 3

from distal edge of 4 to mesial edge of 8, need to see the bone levels but not the whole root

Question 4

what can u see in a vertical bitewing compared to horizontal?

Answer 4

more of the bone but still not the entire root

Question 5

what can u see in a maxillary occlusal radiograph?

Answer 5

Anterior part of maxilla and anterior teeth

Question 6

what can u see in a mandibular occlusal radiograph?

Answer 6

Tooth bearing portion of the mandible and the floor of the mouth

Question 7

name this extra-oral radiograph

Answer 7

Lateral cephalogram

Question 8

name this extra-oral radiograph

Answer 8

Postero-anterior mandible

Question 9

name this extra-oral radiograph

Answer 9

Lateral oblique mandible

Question 10

name this extra-oral radiograph

Answer 10

Occipito-mental views of facial bones

Question 11

what happens to the detail of the image the closer the receptor is to the object?

Answer 11

better detail of image

Question 12

radiographs are used to detect/asses

Apical infection/inflammation

Periodontal problems

Trauma - fractures to tooth or surrounding bone

Tooth morphology pre-extraction

Endodontics (RCT)

Evaluation of implants

tooth development

Question 13

name 2 radiographic techniques

Answer 13

paralleling technique

bisected angle technique

Question 14

name this intra- oral radiographic technique

Answer 14

paralleling technique

Question 15

? technique

Uses ?

Receptor ? to tooth

X ray beam ? to tooth/receptor

Creates ? and ? image

Answer 15

paralleling

holder

parallel

perpendicular

accurate
reproducible

Question 16

name intra-oral technique

Answer 16

bisected angle technique

Question 17

is the bisected angle technique for intra-oral radiographs the standard technique? why?

Answer 17

no
Patient holds film so exposes fingers

Question 18

when do u use the bisected angle technique for intra-oral radiographs?

Answer 18

when a patient cant tolerate a holder in their mouth

Question 19

which teeth are blue holders used for?

Answer 19

anteriors

Question 20

what teeth are yellow holders used for?

Answer 20

posteriors

Question 21

what teeth are red holders used for?

Answer 21

bitewings

Question 22

what teeth are green holders used for?

Answer 22

endodontic procedures

Question 23

what are the 3 structural parts of a holder?

Answer 23

Bite block holds the receptor

Indicator arm/rod fits into the bite block

Aiming ring for alignment of the collimator with receptor

Question 24

name two factors that affect image geometry

Answer 24

receptor tooth relationship
x-ray tube position

Question 25

Vertical plane of the film parallel to?

Answer 25

long axis of the tooth

Question 26

Horizontal plane of the film parallel to?

Answer 26

the dental arch

Question 27

if the x-ray tube is angled up what happens to the teeth in the image?

Answer 27

elongates teeth

Question 28

if the x-ray tube is anlged down what happens to the teeth?

Answer 28

shortens the teeth

Question 29

explain the X-ray source to receptor distance

Answer 29

Want to be long so beam can diverge as cone shaped

Question 30

explain the Object (tooth) to receptor distance

Answer 30

Want to be short

Question 31

for anteriors the receptor orientation is horizontal or vertical?

Answer 31

vertical

Question 32

for posteriors the receptor orientation is horizontal or vertical?

Answer 32

horizontal

Question 33

what are some barriers to good positioning? 4

Answer 33

Mouth size Gag reflex Film size Digital sensor shape and size

Question 34

what film size do u use for adult anteriors?

Answer 34

0 or 1

Question 35

what film size do u use for adult bisecting angles technique?

Answer 35

2

Question 36

what film size do u use for adult posteriors?

Answer 36

2

Question 37

what film size do u use for adult bitewings?

Answer 37

2

Question 38

what film size do u use for child anteriors?

Answer 38

0

Question 39

what film size do u use for child deciduous posteriors?

Answer 39

0

Question 40

what film size do u use for child permanent posterior teeth?

Answer 40

2

Question 41

what film size do u use for child bitewings >10yrs old?

Answer 41

2

Question 42

what film size do u use for child bitewings <10yrs old?

Answer 42

0 or 1

Question 43

what has caused this?

Answer 43

downwards vertical angulation - shortened teeth - separated cusps

Question 44

what has caused this?

Answer 44

horizontal angulation has caused overlap of teeth

Question 45

what has caused this?

Answer 45

upwards vertical angulation - elongated teeth - cone beam cutting has