CDT Dental Anatomy & Morphology 3

Question 1

The mandibular second premolar most commonly has which occlusal pattern?

Accepted Answer

Three-cusp (Y-type) pattern more frequently than two-cusp

Answer

The mandibular second premolar more frequently displays a three-cusp Y-type pattern with one buccal and two lingual cusps than the simpler two-cusp arrangement.

Question 2

Which groove separates the mesiolingual and distolingual cusps on the occlusal surface of the mandibular first molar?

Accepted Answer

Lingual groove

Answer

The lingual groove runs lingually between the mesiolingual and distolingual cusps of the mandibular first molar.

Question 3

What is the defining morphological feature that distinguishes the maxillary lateral incisor from the maxillary central incisor?

Accepted Answer

It is smaller and more variable in shape with a more rounded incisal edge

Answer

The maxillary lateral incisor is smaller and more variable in form than the central incisor, with a more rounded incisal edge and narrower mesiodistal width.

Question 4

The 'cusp of Zuckerkandl' refers to a developmental anomaly sometimes seen on which tooth?

Accepted Answer

Mandibular first molar

Answer

The cusp of Zuckerkandl (also called the distal cusp or tuberculum paramolare) is an accessory cusp sometimes found on the distobuccal aspect of the mandibular first molar.

Question 5

How many pulp horns are typically present in a maxillary first molar?

Accepted Answer

Four

Answer

The maxillary first molar typically has four pulp horns, each corresponding to its four main cusps (mesiobuccal, distobuccal, mesiolingual, distolingual).

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CDT Dental Anatomy & Morphology 3