3d model help

Ok i am going to be honest, i am making this site for a dental clinic, but one of the things that they asked me to do was a 3d model of a mouth… that you can control and move in all directions with your mouse or with some arrows ( make a controller ) so you can see the complete mouth in 3d
but the thing is that i really don’t now how to do it… and i was wondering if someone could help me… thanks…