Embryology and Cleft Conditions
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Questions and Answers

What is the prevalence of cleft lip and/or palate in live births?

  • 1:700 live births (correct)
  • 1:2000 live births
  • 1:500 live births
  • 1:1000 live births
  • Which facial prominences can be observed in 5-6 week embryos?

  • Frontal, parietal, temporal, occipital
  • Orbital, nasal, frontal, zygomatic
  • Nasomedial, nasolateral, maxillary, & mandibular (correct)
  • Maxillary, zygomatic, mandibular, palatine
  • Which environmental factor can contribute to cleft conditions if present during the EARLY stages of pregnancy?

  • Excessive caffeine intake
  • Smoking during the second trimester
  • Retinoic acid (correct)
  • Maternal hypoxia in the late stages of pregnancy
  • What is more common, a cleft lip without a cleft palate or a cleft palate without a cleft lip?

    <p>Cleft lip without cleft palate</p> Signup and view all the answers

    What percentage of isolated cleft palate cases are associated with a syndrome?

    <p>50%</p> Signup and view all the answers

    When detecting a cleft condition, what is crucial according to the text?

    <p>Doing a full exam</p> Signup and view all the answers

    Why is lip repair surgery typically done before palate repair surgery in infants with cleft lip and palate?

    <p>To aid in breastfeeding</p> Signup and view all the answers

    At what age range is alveolar bone graft surgery typically performed on individuals with cleft lip and palate?

    <p>6-10 years</p> Signup and view all the answers

    Which technique involves releasing the alar cartilage for nasal distortion repairs in individuals with cleft lip and palate?

    <p>McComb technique</p> Signup and view all the answers

    Why do surgeons use cancellous bone instead of cortical bone for bone graft in individuals with cleft lip and palate?

    <p>Cancellous bone has more mesenchymal cells</p> Signup and view all the answers

    What is the primary concern with performing palate surgery on infants younger than 6 months?

    <p>Maxillary hypoplasia</p> Signup and view all the answers

    Which surgery is aimed at making room for the canine teeth in individuals with cleft lip and palate?

    <p>Alveolar bone graft surgery</p> Signup and view all the answers

    What is considered the most important part of cleft lip anatomical repair procedures?

    <p>Reuniting the muscle</p> Signup and view all the answers

    Why is it recommended to perform alveolar bone graft surgery before canine eruption in individuals with cleft lip and palate?

    <p>To facilitate proper occlusion of the canines</p> Signup and view all the answers

    What is a consequence of performing cleft palate surgery on a very young baby, according to the text?

    <p>Maxillary hypoplasia</p> Signup and view all the answers

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