If you are not happy with the treatment or service you have had, it is usually best to tell the practice directly that you're unhappy, and give them a chance to put things right. They may be able to sort out the problem there and then.
If you would rather not go directly to the practice, and your complaint is about NHS treatment, you can contact the NHS instead. The NHS is responsible for handling complaints about NHS dental services.
If you are in England, contact NHS England
If you are in Scotland, visit mygov.scot
If you are in Wales, contact your local health board
If you are in Northern Ireland, contact NI Direct
If you are not happy with the way in which your formal complaint was handled (either by the dental practice or the NHS) you can contact the Ombudsman in your area. The Ombudsman makes the final decision on complaints that have not been resolved by the NHS.
In England, contact the Parliamentary and Health Service Ombudsman
In Scotland, contact the Scottish Public Services Ombudsman
In Wales, contact the Public Services Ombudsman for Wales
In Northern Ireland, contact the Northern Ireland Public Services Ombudsman