In 1828, Dieffenbach enhanced the surgical treatment of cleft palate by introducing hard palatal mucosa elevation to allow the closure of hard palatal cleft. von Langenbeck (1859) proposed the creation of a bipedicle mucoperiosteal flap that can be mobilized medially to close the palatal cleft.
In fact, over 2 million deaths occur each year from water-related diarrhea alone. At any given time, almost half of the people in developing countries suffer from water-related diseases.â â¢ WHO World Health Report 1999. Statistical Annex. Totals of 2.3 million excluding several water-related diseases.
663 million people live without safe water. 2.4 billion people don't have access to adequate sanitation, one in three of the world's population. Over 315,000 children die every year from diarrhoeal diseases caused by unsafe water and poor sanitation. That's almost 900 children a day.