Sir,- Over the last week I've seen two patients of previously good oral hygiene and minimal plaque who now have huge deposits of fresh calculus.

Both are ladies who have been on the Atkins diet for the last few months. One said that her teeth felt more 'slimy' and the other was sure that her oral health had been affected because of the lack of fibre 'to chew on' in her food. Has anybody else noticed this?