Brush your teeth twice a day and change your brush every three months – there is hardly any advice on personal hygiene that is so well known and so widely shared. Rightly so. Oral cavities are a paradise for bacteria, and those who scrub thoroughly in the morning and evening, not too hard of course, are less likely to be tormented by caries and periodontitis.
Access to all STERN PLUS content and articles from the print magazine
ad-free
Already registered?
