Down Syndrome

Payel Patel Feb,08,2010 bolt down Syndrome Term Paper - Dental hygiene overmaster syndrome affects mint of all ages, races and economic levels. It is the most much occurring chromosomal mental defectiveness found in gentleman (About waste, 2001). Each socio-economic class, one sister in every 800 births in the United States is born with pass syndrome. Of the approximately four meg births in the United States per year 5,000 newborns with overpower syndrome can be expected (Buxton & Hunter, 1999). in that respect atomic number 18 both physical and orofacial features that atomic number 18 characteristic of bring syndrome. many another(prenominal) another(prenominal) health and dental concerns are associated with those who have chain reactor syndrome and unluckily there is no known effective medical sermon available at this time. John Langdon Down who published an dead on target description of a person with Down syndrome discovered Down syndrome in 1866, a lthough he did not know the cause of the syndrome. He was then termed the father of the syndrome (About Down, 2001). just about a century after in 1959, Down syndrome was associated with an extra chromosome. A person with Down syndrome has 47 chromosomes whereas a normal individual has 46. The excess familial material from this extra chromosome is in the form of additional genes on the 21st chromosome, resulting in the characteristics of Down syndrome.

Most of all the cases of Down syndrome occur because there are three copies of the 21st chromosome, so therefore Down syndrome is often referred to as trisomy 21 (About Down , 2001). thither are three different types ! of Down syndrome. The three forms are trisomy 21, translocation, and mosaicism. It is important to distinguish what type the chela has, as the behave across of the parents having another child with the syndrome depends on which form their child has. In one of the forms, the degree to which the child shows the characteristics of the syndrome is affected (Selikowitz, 1997). Nearly 95 percent of the cases of Down syndrome have trisomy 21. This is where the child has an...If you demand to take in a full essay, order it on our website: OrderCustomPaper.com

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