It’s not the price of your toothbrush but how you use it | Letters
Responding to an article by Emine Saner, Gemma Hooson writes that there are no shortcuts to oral hygiene. Plus a letter by David Duell Emine Saner offers a fascinating survey of the expensive toothbrush tech on offer ( The rise of Big Toothbrush: how did our mouths become such a lucrative market?, 2