Which four mandibular teeth are so aligned that when viewed from the occlusal, a straight line may be drawn bisecting the contact areas_____________?
Correct answer: A. 5,6,7,8
- A. 5,6,7,8
- B. 4,5,6,7
- C. 3,4,5,6
- D. 2.3.4.5
Explanation
The mandibular second premolar through third molar, numbered 5 to 8, have contact areas that can be bisected by a relatively straight line when viewed occlusally. This alignment is a posterior tooth-morphology feature.
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