Radiology M4 - R4 : Bisected angle, occlusal and parallax

Question 1

what technique is being used here

Answer 1

bisecting angle periapical

Question 2

what technique was used to produce this image

Answer 2

bisecting angle periapical

Question 3

what are the reasons for utilising a bisected angle technique

Answer 3

1. to separate the roots of teeth
2. to overcome superimposition
3. when assessing root fractures
4. when localising unerupted teeth
5. when its ok to have a distorted view

Question 4

what technique would be used in response to wanting a bigger view compared to the bisected angle

Answer 4

oblique occlusal radiograph

Question 5

what technique would have had to been used to produce this radiograph

Answer 5

oblique occlussal radiograph

Question 6

what radiograph technique is being used here

Answer 6

oblique occlusal radiograph

Question 7

which radiograpgh technique allows you to see the teeth from crown to apex

Answer 7

oblique occlusal

Question 8

when would you request a oblique occlusal radiograph

Answer 8

1. when a larger area is to be imaged than will fit on periapical film
2. some patients who retch
3. children who cannot tolerate periapical views
4. parallax views - to help assess the relative position of pathology or uerupted teeth

Question 9

this view is used to help assess the relative position of pathology or unerupted teeth - what is the name of this view

Answer 9

parallax view

Question 10

what radiographic technique is being carried out here

Answer 10

mandibular occlusal views

Question 11

mandibular true occlusals are often taken to check for what?

Answer 11

often taken to check for submandibular duct calculi

Question 12

what is a parallax view

Answer 12

2 radiographs taken of same object with a change in angulation of beam