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.
What are some diseases caused by impure drinking water? Some of the most common diseases and ailments contracted from  impure water sources include Cholera, Diphtheria, diarrhea,  Hepatitis, Typhoid fever, Dysentery, Amebic dysenâ¦tery, Brainerd  diarrhea   Cholera. Salih Khatir.