The emergency appointment fee covers assessment of the urgent dental problem, while diagnostic X-rays are charged separately where they are needed to establish the cause.
What you pay beyond the initial appointment depends on the treatment required after examination. Toothache caused by infection, a fractured restoration or a damaged tooth can each require different care, so the total cannot always be established before the dentist has assessed the problem.
The dental team will explain any additional treatment recommended and the associated charges before further care proceeds.