dentist

He alleged the chemical found in toothpaste and regularly used by dentists "is an industrial waste associated with arthritis, bone fractures, bone cancer, IQ loss, neurodevelopmental disorders, and thyroid disease".

At benches they brush and gently scrape dust from fossilized bone, with the gentle dexterity of dentists cleaning Jurassic-era teeth.

He and his wife have been searching for a new NHS dentist since theirs went private about six years ago.

It is expected the Liberal Democrats will focus on social care and the availability of GP and dentist appointments in their response to the Budget.

He said: "Ninety-nine per cent of new patients in the East of England are unable to find an NHS dentist. The worst affected area in the country."