Dental work is usually quite expensive. Appointments are usually made far in advance， but many dentists will try to fit you if you have an urgent problem.
1.A： How long have you felt like this？
B： It started bothering me yesterday afternoon.
A： I think I'd better take an X-ray.
B： Can you see anything？
A： It's a small cavity. It should be easy to fill.
2.A： When did your toothache start？
B： It's been this way for a few days.
A： Let me take a look at it.
B： What do you think？
A： You're got an abscess. I don't think we can save the tooth.
3.A： How long has it hurt？
B： The pain started last night.
A： Well， let's have a look.
B： What are you going to have to do？
A： Your gums seem to be inflamed. You'll need treatment.
4.A： How long have you been in pain？
B： It started to hurt when I was eating dinner.
A： Open your mouth as wide as you can， please.
B： How bad is it？
A： It's quite serious. I'm afraid we'll have to pull the tooth.