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.
According to the World Health Organization and other international bodies: About 4,000 children die each day due to sickness stemming from unclean water and the inability to practice proper hygiene. Approximately 2 to 5 million people per year die due to diarrheal diseases contracted by ingesting contaminated water. Around 300,000 people die from infections based on mere contact with unclean water. Billions of work hours per year are lost in Africa while people travel far to try and collect cleaner drinking water.