i was in south africa 2001 in some where very very african i mean its full of tree nad green griound and alot of different kinds of animals and the main thing that the people are NAKED they do'nt wear any thing as its aganist there traditions so for extraction or diagnosis we cover the whole chair unit withe rapping plastics and the anathesia don't work properly but any way we where tring to help and to releif pain it was a great excertion for me ....