Anomalies of Initiation and Proliferation in Dentition
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Questions and Answers

What is the prevalence of hypodontia in the primary dentition?

  • 10%
  • 5%
  • Less than 1% (correct)
  • 20%

    • Which gene mutations may be identified in cases of hypodontia?

  • MSXI, YXIA, NXA2
  • PAX9, ZYX1, AYZ4
  • AXIN2, PAX9, MSXI (correct)
  • ZYX1, AYZ4, MSXI

    • What is the approximate frequency of hypodontia in mandibular 2nd premolars in males?

  • 2.2%
  • 1.5%
  • 0.85%
  • 3.4% (correct)

    • Which syndrome presents with prominent lips, partial anodontia, and microdontia?

    <p>Williams syndrome</p> Signup and view all the answers

    What dental anomaly is usually observed in individuals with non-syndromic cleft lip/palate?

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

    What is the characteristic of dens invaginatus?

    <p>Evagination of enamel epithelium</p> Signup and view all the answers

    What is the prevalence of microdontia?

    <p>0.8%-8.4%</p> Signup and view all the answers

    What is the characteristic of gemination?

    <p>Abortive attempt by single tooth to divide</p> Signup and view all the answers

    Which syndrome is associated with macrodontia?

    <p>Crouzon syndrome</p> Signup and view all the answers

    What is the characteristic of taurodontism?

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

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