BDA RADIOGRAPHY AND
RADIOLOGY EXAM QUESTIONS
AND ANSWERS 2026 - 2027
If using traditional film where must the small orientation dot go and
why - ANSWERS-Next to the slot so the dot shadow doesn't overly
the apical tissues on radiograph
Will every bisected angle distort the image - ANSWERS-Yes
Why does the degree of distortion vary for bisected angles -
ANSWERS-Because it is operator dependant therefore not
reproducible
What will happen if the X-ray beam is too steep - ANSWERS-For
shortening , vertical angulation too steep
What are the 3 ideal positionings for radiographs ? - ANSWERS-
Tooth and image receptor parallel
Tooth and image receptor touching
X-ray beam should meet the tooth and image receptor at right angles
Does the bisected angle meet any of the geometrical requirements? -
ANSWERS-No . None of them
, For posterior teeth the long axis of the image receptor should be -
ANSWERS-Horizontal to the long axis of the tooth
Are the clinical indications for the bisected angle technique the same
for paralleling technique ? - ANSWERS-Yes
What is the vertical and horizontal positioning for maxillary incisors ?
Bisected angle - ANSWERS-Vertical - 90 degrees to the bisected line
forming a 45 degree angulation
Horizontal- X-ray beam aimed directly between incisors
What would a too shallow vertical angulation do to the radiograph -
ANSWERS-Elongation
Vertical and horizontal angulation for upper canines - ANSWERS-
Vertical angulation - 50 degrees steep aimed 90 degrees to the
bisected angle
Horizontal - X-ray beam centred centred in canine region
Vertical angulation and horizontal for upper premolars - ANSWERS-
Vertical - 40 degrees shallow and 90degrees to bisected angle
Horizontal - X-ray beam centred on premolars
Vertical and horizontal positioning for upper molars - ANSWERS-
Vertical - 90 degrees to bisected line and shallow angulation of about
30 degrees
RADIOLOGY EXAM QUESTIONS
AND ANSWERS 2026 - 2027
If using traditional film where must the small orientation dot go and
why - ANSWERS-Next to the slot so the dot shadow doesn't overly
the apical tissues on radiograph
Will every bisected angle distort the image - ANSWERS-Yes
Why does the degree of distortion vary for bisected angles -
ANSWERS-Because it is operator dependant therefore not
reproducible
What will happen if the X-ray beam is too steep - ANSWERS-For
shortening , vertical angulation too steep
What are the 3 ideal positionings for radiographs ? - ANSWERS-
Tooth and image receptor parallel
Tooth and image receptor touching
X-ray beam should meet the tooth and image receptor at right angles
Does the bisected angle meet any of the geometrical requirements? -
ANSWERS-No . None of them
, For posterior teeth the long axis of the image receptor should be -
ANSWERS-Horizontal to the long axis of the tooth
Are the clinical indications for the bisected angle technique the same
for paralleling technique ? - ANSWERS-Yes
What is the vertical and horizontal positioning for maxillary incisors ?
Bisected angle - ANSWERS-Vertical - 90 degrees to the bisected line
forming a 45 degree angulation
Horizontal- X-ray beam aimed directly between incisors
What would a too shallow vertical angulation do to the radiograph -
ANSWERS-Elongation
Vertical and horizontal angulation for upper canines - ANSWERS-
Vertical angulation - 50 degrees steep aimed 90 degrees to the
bisected angle
Horizontal - X-ray beam centred centred in canine region
Vertical angulation and horizontal for upper premolars - ANSWERS-
Vertical - 40 degrees shallow and 90degrees to bisected angle
Horizontal - X-ray beam centred on premolars
Vertical and horizontal positioning for upper molars - ANSWERS-
Vertical - 90 degrees to bisected line and shallow angulation of about
30 degrees
