See the above three fields are well oriented and have good scope ahead. But if you want to have a good clinical exposure or if you want to be a doctor in the government medical hospitals then going for BDS will be better. See for medical purpose there are more infrastructure for the Allopaethic medicine compared to any of the other course. So if you go for BDS you will have a better scope in terms of Government positions as well as you can do a better private clinic than that of BHMS or BAMS. BHMS and BAMS are the natural healers which don't face the emergency cases. But if you go for BDS you will get the charm of being an surgeon as well as you can prescribe medicine which quite similar to that of a MBBS doctor except your are specialized to Dentistry.

To know more about BDS visit the link below:

https://www.careers360.com/courses/bds-bachelor-of-dental-surgery

To know more about BAMS visit the link below:

https://www.careers360.com/courses/bams-bachelor-of-ayurvedic-medicine-and-surgery

To know more about BHMS visit the link below:

https://www.careers360.com/courses/bhms-bachelor-of-homeopathic-medicine-and-surgery

I hope this answer helps. All the very best for your future endeavors!