In all my time of seeing dentists, never once has one performed the extensive intrusive non dentistry related tests that are non routine. I have dentists in my family so I speak with a deeper understanding of what is considered routine and non routine. Rather, his actions appeared to have been prompted by race rather than science and genetics a dangerous school of thought with it's share of preconceived misleading beliefs. The doctor demonstrated the worst bedside manner, when he entered the exam area, instead of coming around to greet me face-to-face for a proper introduction, he sat behind me and proceeded to execute a perfunctory greeting. ( (of an action or gesture) carried out with a minimum of effort or reflection.)
This person can greatly benefit from a self exam from the Harvard University Study -https://implicit.harvard.edu/implicit/user/agg/blindspot/indexrk.htm