Anatomy & Histology · single question
Applying the SLOB rule: a radiopaque object appears near the root of tooth #5 (maxillary right first premolar). When the X-ray tube/cone is shifted distally for the second film, the object's image appears to shift toward tooth #6 (the maxillary right canine, which is MESIAL to tooth #5). Where is the radiopaque object located?
Show answer and explanation
Correct answer: B. Buccal
The tube shifted distally, but the object's apparent image moved toward tooth #6 — which is MESIAL to tooth #5 — meaning the image moved in the OPPOSITE direction from the tube shift. Per the SLOB rule, opposite-direction movement indicates the object is BUCCAL.
Practice Anatomy & Histology questions Anatomy & Histology study notes