20. khalili down syndrome

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20. khalili down syndrome

  1. 1. DOWN SYNDROMEkhalili amin dmd
  2. 2. Definition Down syndrome (DS) or Downs syndrome, also known as trisomy 21, is a chromosomal conditioncaused by the presence of all or part of a third copy ofchromosome 21. Down syndrome is the most common chromosome abnormality in humans.
  3. 3. Sign and symptomsA small head compared to body sizeBroad feet with short toesEars that are small and set lowShort arms and legs compared to length of bodyBroad hands with short fingers and a single crease across the palmSmall nose and small mouth, in which the tongue may be relatively largeLack of muscle toneAbility to extend body joints; extreme flexibilityEyes that slant upward and outward.
  4. 4. Dental correlationpoor dental health and acuteneurological disease wereassociated with the severity ofintellectual disability and ageing.

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