BDS stand for Bachelor of Dental Surgery. It is a four year under graduate degree in dental surgery. After BDS there are many short term courses available in aboard here some of courses are Dental Hygienist Certificate Course, Dental Mechanic Certificate Course, Diploma Course In Dental Assistance. For Career in Dentistry, USA, UK, Canada, Australia are best options. If you want to migrate abroad. You need to first qualify a two year certification to get registered in one of the boards of that country. For USA, you need to clear National Board Dentistry Examination. For Canada or UK you need to clear ORE examination.