Dentists do have the right to refuse to see particular patients, NHS England's Chief Dental Officer told Good Morning Britain.
Dr Barry Cockcroft said "there's no absolute right to see a specific dentist."
Consumer watchdog Healthwatch have found examples of patients getting "deregistered" from their dental practices for missing single appointments, in one case to take a relative for cancer treatment.
More top news
Through the day we'll see plenty of sunny spells but there will be a risk of showers too as they filter down from the northwest.
Pilots say they are rostered in 'illegally' and feel fatigued from working too many hours.
The alleged hacking follows reports of similar attacks on other Democratic organisations, amid fears of state-sponsored hacking.