Anatomy of Molars and Roots
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Questions and Answers

What characteristic of the roots of the permanent molars creates space for the permanent premolar crown to develop?

  • Less flare
  • Straight roots
  • Thicker roots
  • More flare (correct)
  • Compared to the first molar, the roots of the deciduous second molar do what?

  • Grow longer
  • Flare less
  • Flare more (correct)
  • Stay the same
  • What is the difference between the roots of the deciduous and permanent molars?

  • Deciduous molars have thicker roots
  • Deciduous molars have more flare (correct)
  • Permanent molars have straight roots
  • Permanent molars have more flare
  • What is the result of the flare of the roots of the permanent molars?

    <p>More space for the permanent premolar crown</p> Signup and view all the answers

    What is the relationship between the flare of the roots of the deciduous and permanent molars?

    <p>The deciduous molars have more flare than the permanent molars</p> Signup and view all the answers

    What forms the walls of the pulp chamber?

    <p>The innermost surface of the dentin</p> Signup and view all the answers

    How many pulp chambers are found in each tooth?

    <p>One pulp chamber</p> Signup and view all the answers

    What is the function of the pulp horns?

    <p>They form the roof of the pulp chamber</p> Signup and view all the answers

    In a cusped tooth, how many pulp horns are typically found?

    <p>One pulp horn per sizeable cusp</p> Signup and view all the answers

    What is the location of the pulp chamber in a tooth?

    <p>The most incisal portion of the pulp cavity</p> Signup and view all the answers

    Study Notes

    Root Structure of Deciduous and Permanent Molars

    • Permanent molars have more flare, or spreading, in their roots compared to deciduous molars.
    • This additional flare in permanent molars creates space for the permanent premolar crown to develop.
    • The roots of deciduous second molars flare more than those of the first molar.
    • In contrast, the roots of permanent molars flare less than those of the deciduous molars.

    Pulp Chamber Structure

    • The pulp chamber is located in the most incisal portion of the pulp cavity.
    • There is a single pulp chamber in each tooth.
    • The walls of the pulp chamber are formed by the innermost surface of the dentin.
    • Each pulp chamber has a roof at its incisal border, featuring projections called pulp horns.
    • The number of pulp horns in each cusped tooth (molars, premolars, and canines) is typically one horn per sizeable cusp.

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    Description

    This quiz covers the anatomy of permanent and deciduous molars, focusing on the roots and their development. It explores the differences in root flaring between the two types of molars.

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