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Alongside savoury products, companies also sell pouches containing only fruit, which are leaving dentists concerned about the potential for tooth decay.

There are currently no caps on how much private specialists, dentists or hospitals can charge and neither private health insurance nor slim Medicare rebates reliably offer substantial relief.

Mrs Hegarty said if her dentist closed in Dungiven it would be "quite serious" and have a "major impact" on a lot of people.

Karsh asks the dentist as he pokes around at his teeth.

But implants can cause unforeseen problems for the patient, and the dentists looking after them.