Chapter 51 Cleft Lip/Palate

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  1. The prevalence of clefting varies between ___ per _____ births. The highest rates of clefting occurs in _______. Cleft lip occurs more frequently in _____, while cleft palate occurs more frequently in ________.
    • 1 and 2
    • 1,000
    • Asians and Native Americans
    • males
    • females
  2. What is a Class I Classification of Clefts
    Cleft of the tip of the uvula
  3. What is a Class II Classification of Clefts
    Cleft of the uvula (bifid uvula).
  4. What is a Class III Classification of Clefts
    Cleft of the soft palate
  5. What is a Class IV Classification of Clefts
    Cleft of the soft and hard palates
  6. What is a Class V Classification of Clefts
    Cleft of the soft and hard palates that continues through the alveolar ridge on one side of the premaxilla; usually associated with cleft lip of the same side
  7. What is a Class VI Classification of Clefts
    Cleft of the soft and hard palates that continues through the alveolar ridge on both sides, leaving a free premaxilla; usually associated with bilateral cleft lip
  8. What is a Class VII Classification of Clefts
    Submucous cleft in which the muscle union is imperfect across the soft palate. The palate is short, the uvula is often bifid, a groove is situated at the midline of the soft palate, and the closure to the pharynx is incompetent
  9. A cleft on one side of the lip that does not extend into the nose is called _______ which occurs due to ______
    • unilateral incomplete
    • lack of connective tissue migration between one maxillary process and medial nasal processes
  10. Describe a Unilateral Complete Cleft Lip
    Completely separates the lip and extends into the nose and mouth
  11. Bilateral cleft lip occurs between ______
    both maxillary processes and medial nasal processes
  12. Cleft lip and palate represent a failure of normal fusion of embryonic processes during development in the _____ trimester of pregnancy
  13. Formation of the lip occurs between the _______ week in utero. A cleft lip becomes apparent by the end of the ____ month
    • 4th and 8th
    • second
  14. Development of the palate takes place during the ________ week. A cleft palate is evident by the end of the _____ month.
    • 6th to 12th
    • third
  15. The nose, eyes, and mouth form between the ______ weeks.
    4th and 6th
  16. What are some risk factors for clefts
    • Use of tobacco
    • Alcohol consumption
    • phenytoin, vitamin A (isotretinoin), corticosteroids, drugs of abuse
    • Maternal age > 40 years
    • Inadequate diet: vitamins, especially folic acid deficiency
  17. Predisposition to ________ infections is common.
    upper respiratory and middle ear
  18. Ear infections are often due to a dysfunction of the ______ that connects the _______.
    • Eustachian tube
    • middle ear and the throat
  19. Feeding difficulties occur more often with ______ than ______.
    cleft palate than cleft lip
  20. What are common missing teeth in clefts
    • Maxillary lateral incisors.
    • Maxillary premolar.
    • Mandibular second premolars
  21. Surgical union of the cleft lip is made at approximately _____ months of age.
  22. Primary surgery to close the palate is usually undertaken by age ______ or earlier when possible
    18 months
  23. Bone grafting in the alveolar ridge is ideally done before
    the eruption of the maxillary teeth
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Chapter 51 Cleft Lip/Palate
2017-11-14 21:43:01
Chapter 51 Cleft Lip Palate
Chapter 51 Cleft Lip/Palate
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