In my own personal experience (chronic pain), "Real Doctors" seem to want to shove pills down your throat because "they work", or give things like steroid shots which have negative long term effects. Whereas "Functional Doctors" are willing to try more traditional things because historically they have seemed to produce good results and are typically less intrusive (but may require more effort from the patient).
So I can see "Functional Dentist" being more like a dentist that is willing to try more ways to save teeth & gums by using more traditional methods (eg. Balancing the oral microbiome, suggesting softer foods more often), rather than a "Real Dentist" suggesting extractions or root canals without ever mentioning the hardness of foods or oral microbiome.
So I can see "Functional Dentist" being more like a dentist that is willing to try more ways to save teeth & gums by using more traditional methods (eg. Balancing the oral microbiome, suggesting softer foods more often), rather than a "Real Dentist" suggesting extractions or root canals without ever mentioning the hardness of foods or oral microbiome.