Dental Anatomy: Maxillary First Molar

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Questions and Answers

Which cusp of the maxillary first molar is of little practical use?

  • Cusp of Carabelli (correct)
  • Mesiolingual
  • Distobuccal
  • Mesiobuccal

What is the morphological trait called when the supplemental cusp grades down to a series of grooves, depressions, or pits on the mesial portion of the lingual surface?

  • Mesiobuccal cusp
  • Distobuccal cusp
  • Fifth cusp
  • Cusp of Carabelli (correct)

Which tooth in the maxillary arch is normally the largest?

  • Maxillary central incisor
  • Maxillary second molar
  • Maxillary lateral incisor
  • Maxillary first molar (correct)

How many well-developed functioning cusps does the maxillary first molar have?

<p>Four (D)</p> Signup and view all the answers

What is the name of the supplemental cusp of little practical use in the maxillary first molar?

<p>Cusp of Carabelli (B)</p> Signup and view all the answers

Which tooth in the maxillary arch is typically the largest?

<p>Maxillary first molar (A)</p> Signup and view all the answers

How many well-developed functioning cusps does the maxillary first molar have?

<p>Four (A)</p> Signup and view all the answers

What can the supplemental cusp of the maxillary first molar grade down to, on the mesial portion of the lingual surface?

<p>A series of grooves (B)</p> Signup and view all the answers

At what age does the root of the maxillary second molar typically complete its development?

<p>14–16 years (D)</p> Signup and view all the answers

When does the enamel of the maxillary second molar complete its development?

<p>21 and half years (C)</p> Signup and view all the answers

At what age does the eruption of the maxillary second molar typically occur?

<p>12–13 years (C)</p> Signup and view all the answers

What is the first evidence of calcification for the maxillary second molar?

<p>21 and half years (C)</p> Signup and view all the answers

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Study Notes

Maxillary First Molar

  • The distolingual cusp of the maxillary first molar is of little practical use.
  • The supplemental cusp can grade down to a series of grooves, depressions, or pits on the mesial portion of the lingual surface, a morphological trait known as "Carabelli trait".
  • The maxillary first molar has 4-5 well-developed functioning cusps.

Maxillary Teeth

  • The maxillary first molar is normally the largest tooth in the maxillary arch.

Maxillary Second Molar

  • The root of the maxillary second molar typically completes its development at around 12-13 years of age.
  • The enamel of the maxillary second molar completes its development at around 2-3 years after eruption.
  • The eruption of the maxillary second molar typically occurs at around 12-13 years of age.
  • The first evidence of calcification for the maxillary second molar occurs at around 2-3 years after birth.

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