Dr. Joyce Trail, 50, has been found guilty along with her daughter Nyri Sterling,33, of conspiracy to defraud the NHS of £1.4 million.
She lived in a £1.2 million house while declaring an income of less than £50,000 a year to the Inland Revenue.
Judge Peter Carr said today
In your case there is no other option than a substantial sentence of imprisonment, the only thing I need to decide is its length.
"You abused your position as a professional and you abused your position as a dentist. You have effectively stolen a large amount of money that was not available to an already overstretched health service."
A West Midlands dentist who conned the NHS out of £1.5 million has been jailed for seven years.
A dentist from Handsworth is due to be sentenced this afternoon for conspiracy to defraud.
A dentist has been convicted of defrauding the NHS of £1.4 million, in one of the biggest cases of fraud the health service has ever seen.