SCHUDY’S CONCEPT: Mandibular Rotation and Growth Disharmony
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Questions and Answers

What is the result of a clockwise rotation of the mandible?

  • Less anterior facial height and more horizontal change of the chin
  • No significant changes in facial height or chin position
  • More anterior facial height and less horizontal change of the chin (correct)
  • Equal anterior and vertical facial changes

    • In Schudy's concept, what causes the mandible to rotate counterclockwise?

  • Significantly less growth at the condyles compared to the molar region
  • Equal growth between condylar and vertical growth in the molar area
  • Upside-down positioning of the condyles
  • Greater condylar growth than vertical growth in the molar area (correct)

    • What facial change is associated with a counterclockwise rotation of the mandible?

  • More horizontal change of the chin and less anterior facial height (correct)
  • Closed bites and more anterior facial height
  • Less horizontal change of the chin and more anterior facial height
  • Open bites and less horizontal change of the chin

    • What kind of facial changes are seen in extreme cases of a counterclockwise rotation of the mandible?

    <p>Closed bites</p> Signup and view all the answers

    According to Schudy, what implications does the rotation of the mandible have in the craniofacial complex?

    <p>Mainly in vertical growth of the craniofacial complex</p> Signup and view all the answers

    What causes a clockwise rotation of the mandible, according to Schudy's concept?

    <p>Vertical growth in the molar region is greater than that at the condyles</p> Signup and view all the answers

    What is the resultant vector of growth of the chin a result of?

    <p>Struggle between horizontal growth and vertical growth</p> Signup and view all the answers

    What effect does the vertical growth of the anterior alveolar processes have on facial height?

    <p>No appreciable effect on facial height</p> Signup and view all the answers

    What leads to counterclockwise rotation of the mandible?

    <p>More condylar growth than combined vertical growth</p> Signup and view all the answers

    What is the point of rotation for counterclockwise rotation of the mandible?

    <p>Most distal mandibular molar in occlusal contact</p> Signup and view all the answers

    What does a smaller gonion angle result in?

    <p>Greater rotation for each millimeter of forward movement of pogonion</p> Signup and view all the answers

    Why does a chin produced in the forward and downward direction signify a struggle between horizontal and vertical growth?

    <p>Vertical increments of facial growth affect condylar growth</p> Signup and view all the answers

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