You are unsure of the location of an opaque mass superimposed over the root of a mandibular premolar. A second view of the same region, made with the tubehead oriented more from the mesial, reveals that the object has moved mesially with respect to the premolar root as compared to the first radiograph. The object is located:

RADIOLOGY

Please wait while the activity loads.
If this activity does not load, try refreshing your browser. Also, this page requires javascript. Please visit using a browser with javascript enabled.

If loading fails, click here to try again

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

A	buccal to the premolar root.
B	lingual to the premolar root
C	in the same buccal-lingual orientation as the premolar root.
D	There is insufficient information to answer the question.

Explanation:

Detailed explanation-1: -Mental foramen – The mental foramen, the primary landmark of this area, is a circular radiolucent structure located below the roots of the mandibular premolar teeth.

Detailed explanation-2: -How do you tell the difference between a first and second premolar? The major visible difference between the first and second premolar can be observed in their cusps. The first premolar has more sharp and prominent cusps, but the second premolar has rounded and small cusps.

Detailed explanation-3: -The patient is positioned with the head supported and with the occlusal plane horizontal. d. Mandibular premolars and molars – the image receptor is placed in the lingual sulcus next to the appropriate teeth.

Detailed explanation-4: -First Premolar The mesial marginal groove crosses the mesial marginal ridge and extends onto the mesial surface. The facial cusp is wider and longer than the lingual cusp.

There is 1 question to complete.

CLINICAL MEDICINE

MEDICINE

RADIOLOGY