India, April 11 -- For millions of coffee drinkers, the morning ritual is sacred, but the order of operations - caffeine first or toothbrush first - remains a point of contention. Dr Mark Burhenne, a San Francisco-based dentist with more than 40 years of experience, weighed in on the habit, suggesting that most people are doing it backward if they want to avoid stains. Also read | Don't brush your teeth before sleeping? Doctor explains why skipping brushing may do more harm than just risk cavities

In an insight shared via Instagram on February 20, Dr Burhenne explained that the truth about teeth staining lies in the microscopic environment of the mouth after a night of sleep. "When you drink coffee before brushing your teeth, the milk pr...