Twice a year? That's only recommended by dentists in north america because most insurances cover it because of lobby pressure. Every 1-2 years fully suffices, d

Twice a year? That's only recommended by dentists in north america because most insurances cover it because of lobby pressure. Every 1-2 years fully suffices, depending on your risk profile (smoker, genetics, ...). That's what countries where the insurrance doesn't have skin in the game recommend. And the average european has much better tooth health than the average u.s. citizen, in my experience.