Mand. 2nd Molar Flashcards

1
Q

How many cusps does the mandibular second molar have?

A

It has four cusps: mesiobuccal, distobuccal, mesiolingual, and distolingual.

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2
Q

What is the shape of the crown outline of the mandibular second molar when viewed occlusally?

A

The crown outline is rectangular.

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3
Q

How are the roots of the mandibular second molar different from the first molar?

A

The roots are closer together and curve towards each other; they are not as widely separated as in the first molar.

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4
Q

What distinguishes the cusps of the mandibular second molar in terms of size?

A

The cusps decrease in height in the following order: mesiolingual, distolingual, mesiobuccal, and distobuccal.

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5
Q

What is the distinguishing groove pattern of the mandibular second molar’s occlusal surface?

A

The grooves form a cross (+) shape, dividing the surface into four equal quadrants.

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6
Q

What feature is prominent on the buccal side of the mandibular second molar?

A

The buccal cervical ridge, which is more pronounced on the mesial side than the distal side.

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7
Q

Where are the mesial and distal contact points located on the mandibular second molar?

A

The mesial contact point is at the junction of the occlusal and middle thirds, while the distal contact point is in the middle of the middle third.

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8
Q

How does the mandibular second molar demonstrate lingual and distal convergence?

A

It shows some tapering towards the distal and slight lingual convergence depending on the reference.

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