This depends upon the kind of degree the dentist has. Whether he is a graduate or post-graduate and whether he chooses to work at a hospital, at somebody else's clinic or sets up his/her own clinic. Pay for a graduate at a hospital is not more than 7-10 k but he/she can set up his/her own clinic which is always profitable if right decisions are made . Life gets easier after post graduation. One can reach the pay scale of 75 k to one lakh within years. And yes, they can always work at their clinic too.
Hope this helps
All the best