I have done BDS from government college, am I eligible for PhD in psychology
No,phd degree is the highest possible academic degree a student can obtain in relevant discipline only the similar subjects students can opt for the psychology course like BSC degree holders
Moreover you can do phd in your own discipline PhD in Oral and Maxillofacial Surgery. PhD in Periodontology. PhD in Pedodontics. Are the dominant areas of your subject where you can do research.