A dental practice is to close in Cornwall today after filing for bankruptcy.
George House dental practice in Bodmin will shut after the end of business tonight.
A spokesman for NHS England said it had been informed today that the practice is filing for bankruptcy.
This would make it unable to meet its contractual requirement of providing three months' notice, the organisation said.
It is understood that around 2,300 people are likely to be affected.
Bridget Sampson, Director of Commissioning with NHS England's Area Team for Devon, Cornwall and Isles of Scilly, said: “The situation is regrettable.
“We know that the closure will cause concern for patients and add to pressure on the dental system within the area.
“We were told today that the practice is filing for bankruptcy.
“Our immediate concern is to ensure that patients are advised of the position and make arrangements for those patients part-way through courses of treatment to have their treatment completed.
“It will take longer to replace the lost NHS capacity, but we've already started that process.”
NHS England said that all patients due for appointments over the next three weeks, taking in Christmas and new year, will be contacted over the weekend.
It added that their immediate priority is to find alternative dental providers for those patients who are part-way through courses of treatment.
Other NHS patients who have been seen by the practice in the past 18 months will also be asked if they would like to be placed on the waiting list for reallocation to another NHS surgery.
NHS England is working on plans to replace the capacity that will be lost with the closure of George House.
All patients will be contacted to confirm the current position, but this is not likely to happen until the new year.
The local dental helpline will be available from Monday morning to provide information for patients registered with George House.
For more information call: 01392 822348 or 0845 002 0034 or email firstname.lastname@example.org