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Dental Anatomy II: Permanent Mandibular Molars

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Dental Anatomy II: Permanent Mandibular Molars

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Questions and Answers

What is the key difference between the distal root (DR) and mesial root (MR) according to the text?

DR is longer and wider than MR

DR has a more pointed apex compared to MR (correct)

DR has a deeper depression on the root

DR has fewer root canals than MR

What is the geometric outline of the crown described in the text?

Rectangular (correct)

Triangular

Oval

Circular

Which crown measurement is larger than the other?

Mesio-distal (MD) width is larger than bucco-lingual (BL) thickness (correct)

MD and BL measurements are equal

Bucco-lingual (BL) thickness is larger than mesio-distal (MD) width

The text does not provide this information

How is the crown described in terms of convergence?

The crown converges lingually and distally Signup and view all the answers

Which of the following statements about the buccal and lingual outlines of the crown is correct?

The buccal outline is larger than the lingual outline Signup and view all the answers

How is the mesial outline of the crown described compared to the distal outline?

The mesial outline is longer than the distal outline Signup and view all the answers

How many cusps are described on the occlusal surface?

4 cusps Signup and view all the answers

Which cusp is described as the largest?

The mesio-buccal cusp (MBC) Signup and view all the answers

How many major fossae are described on the occlusal surface?

1 major central fossa Signup and view all the answers

What is the pattern of the developmental grooves on the occlusal surface?

Cross-shaped pattern Signup and view all the answers