Practising as a dentist in two countries

Is it possible to work as a dentist in two countries? Are there really any advantages? The question must be asked especially if we consider that practitioners of foreign nationality holding a European diploma are now more than 3,300, which is almost 5 times more than in 2012. (The number of diplomas obtained abroad is also growing rapidly if we also consider French speakers who travel abroad to train...). It should be noted that many of these foreign practitioners do not practice permanently on French territory. Indeed, they go back and forth between their countries of origin and France!