Human Dentition Overview
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Human Dentition Overview

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Questions and Answers

What is the total number of primary teeth in human dentition?

  • 16
  • 32
  • 28
  • 20 (correct)

    • At what mean age do primary teeth typically begin to emerge?

  • 3 years
  • 6 months (correct)
  • 1 year
  • 6 years

    • Which of the following types of teeth are not present in primary dentition?

  • Molars
  • Incisors
  • Premolars (correct)
  • Canines

    • What is the average age at which secondary teeth are fully formed, including roots?

    <p>15 years</p> Signup and view all the answers

    What is the primary function of incisors in dental anatomy?

    <p>Cutting food</p> Signup and view all the answers

    Which teeth are completed at the latest age, between 18 to 25 years?

    <p>Third molars</p> Signup and view all the answers

    Which dental formula letter represents molars?

    <p>M</p> Signup and view all the answers

    What age range typically corresponds to full permanent dentition?

    <p>18-25 years</p> Signup and view all the answers

    What type of teeth are referred to as 'corner stones' in dental terminology?

    <p>Canines</p> Signup and view all the answers

    Which of the following describes the shape and function of premolars?

    <p>Round hexagonal shape, used to grind food</p> Signup and view all the answers

    What classification trait pertains specifically to the type of tooth within a class?

    <p>Type trait</p> Signup and view all the answers

    Which of the following terms is used to describe the embedded part of the tooth in the jawbone?

    <p>Root</p> Signup and view all the answers

    In terms of the dental nomenclature, what does 'UL' refer to?

    <p>Upper left quadrant</p> Signup and view all the answers

    Which of the following describes the white layer that appears when you look at your teeth?

    <p>Crown</p> Signup and view all the answers

    Which type of teeth has a total count of 3 in the lower jaw?

    <p>Molars</p> Signup and view all the answers

    How many deciduous teeth are present in one side of the upper and lower jaw?

    <p>10</p> Signup and view all the answers

    The term 'deciduous' in the context of teeth refers to which type of set trait?

    <p>Temporary teeth</p> Signup and view all the answers

    What is the total number of permanent teeth on one side of the upper jaw?

    <p>8</p> Signup and view all the answers

    What part of the anatomical root is known as the clinical root?

    <p>The part embedded in the jaw</p> Signup and view all the answers

    If a dental formula is represented as I2/2 C1/1 PM2/2 M3/3, what does it refer to?

    <p>All permanent teeth</p> Signup and view all the answers

    What is the combined total of teeth in one side of the upper and lower jaw for permanent teeth?

    <p>28</p> Signup and view all the answers

    In patients with advanced bone loss, how might the clinical root be affected?

    <p>It may be reduced in size</p> Signup and view all the answers

    Why is the clinical root not visible clinically?

    <p>It is surrounded by gums</p> Signup and view all the answers

    Which statement best describes the anatomical root?

    <p>It includes parts that are both visible and embedded</p> Signup and view all the answers

    Which of the following is NOT true regarding the clinical root?

    <p>It is always larger than the anatomical root</p> Signup and view all the answers

    Study Notes

    Human Dentition

    • Humans have two sets of teeth, diphyodont.
    • Primary/Deciduous/Baby/Milk teeth
      • 20 teeth total: Incisors, Canines, Molars
      • Smaller in size
      • Start forming prenatally, complete postnatally by age 3
      • Appear in the oral cavity at 6 months, last tooth emerges at 28-4 months
    • Secondary/Permanent/Succedanous teeth
      • 32 teeth total
      • Incisors, Canines, Premolars, Molars
      • Larger in size
      • Appear in the oral cavity at 6 years old
      • Completed (including roots) at 14-15 years old except 3rd molars (18-25 years old)

    Dental Formula

    • A way to write the number and types of teeth in the jaws
    • Deciduous teeth:
      • DI2/2 DC1/1 DM2/2 = 10
    • Permanent teeth:
      • I2/2 C1/1 PM2/2 M3/3 = 16
    • Note:* This represents one side of the jaw, multiply to get the total count

    Nomenclature

    • System of names to classify teeth
    • Set trait
      • Deciduous or Permanent
    • Arch trait
      • Maxillary or Mandibular
    • Class trait
      • Incisor, Canine, Premolar, Molar
    • Type trait
      • Central or Lateral (incisors)
      • First, Second, Third (molars)
    • Side
      • Right or Left
    • Quadrant:
      • UR (Upper Right)
      • UL (Upper Left)
      • LR (Lower Right)
      • LL (Lower Left)
    • Crown: The visible portion of the tooth
    • Root: The portion embedded in the jawbone
      • CEJ (Cementoenamel junction): The cervical line that separates crown from root

    Full Permanent Dentition

    • Achieved at 18-25 years (when the 3rd molars develop)

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    Description

    This quiz covers the basics of human dentition, including the two sets of teeth: primary (deciduous) and secondary (permanent). It also explores the dental formula and nomenclature used to classify teeth. Test your knowledge on the types, number, and characteristics of human teeth.

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