The number of patients for each dentist in much of Suffolk increased by 26% over the last two years according to new figures just published.
The Liberal Democrats used figures from the House of Commons library to highlight what they describe as a "dental desert" across the country.
And that shows that the problem is getting worse in Ipswich and east Suffolk faster than almost any other part of the country.
The figures show that in 2019/20 there were 1,828 patients for every dentist in the area - but by 2021/22 it had gone up to 2,302.
The percentage rise is the second highest in the country after Bolton in Greater Manchester.
The increasing demand shows one of the main reasons why it is so difficult for people in this area to find an NHS dentist.
Lib Dem leader Sir Ed Davey said: “The staggering rise in dental deserts has left far too many people struggling to get an NHS dental appointment.”
“It is heartbreaking that people are being left waiting in pain for months or even years for the dental care they need."
A spokesman for pressure group Toothless in Suffolk said: "This latest data further supports what patients have been telling our campaign since it launched two years ago.
"They are finding that the access doors to NHS dental treatments are being firmly shut in their faces more often than not.
"The situation has come about as a result of government neglect, and patients simply cannot wait for the so-called dental contract reforms to kick in."
Responsibilty for dental services was taken over by the Suffolk and North East Essex NHS Integrated Care Board at the start of April.
A spokesman for the board said: “The ICB is determined to improve access to care and treatment, particularly as the local population continues to expand.
"We are already working with our partners on ways to enhance NHS dental services that meet people’s needs and helps ensure good oral health for all.”
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