Developmental Defects of Teeth Classification
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Questions and Answers

Which of the following factors is classified as a teratogen in causing developmental defects of teeth?

  • Nutritional deficiency
  • Radiation (correct)
  • Local trauma
  • Infections
  • What is the classification of developmental disturbance of teeth which includes abnormalities in number?

  • Macrodontia
  • Fusion
  • Hyperdontia (correct)
  • Gemination
  • In Mandelian inheritance, what is received from each parent?

  • Genes occur in pair
  • One gene of each pair (correct)
  • Abnormalities in size
  • Genes forming pair called allele
  • What is the main difference between congenital and tarda developmental defects of teeth?

    <p>Manifestation time</p> Signup and view all the answers

    Which classification of developmental disturbance of teeth includes abnormalities in shape such as gemination and fusion?

    <p>Abnormalities in shape</p> Signup and view all the answers

    What is the term used to refer to an excess tooth that is not morphologically similar to any normal teeth?

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

    Which type of supernumerary teeth appears before the deciduous dentition?

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

    In Cleidocranial dysplasia, what dental abnormality is characterized by delayed eruption of permanent teeth and many unerupted supernumerary & supplemental teeth?

    <p>Decrease in number of teeth (hypodontia)</p> Signup and view all the answers

    What is the abnormality characterized by abnormal large teeth, with a disproportion between the size of teeth and the size of the jaw called?

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

    Which type of abnormality results from the union of two adjacent enamel organs, leading to a tooth with two roots and two root canals?

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

    Which type of supernumerary teeth erupt during the first month of life and must be differentiated from deciduous dentition by x-ray?

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

    In Cleidocranial dysplasia, what dental abnormality is characterized by delayed shedding of deciduous teeth and teeth with conical shape?

    <p>Decrease in number of teeth (hypodontia)</p> Signup and view all the answers

    What is the abnormality characterized by abnormal small teeth, with a disproportion between the size of teeth and the size of the jaw called?

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

    Which type of abnormality is characterized by two teeth joined along their roots by cementum without dentin, often due to trauma or crowding of teeth?

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

    What is the false condition characterized by failure of eruption rather than failure of formation of single tooth or group of teeth called?

    <p>False Anodontia</p> Signup and view all the answers

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