IF YOU DONT HAVE DENTAL INSURANCE...

There are 2 places to go in Jersey City I have found that go on a pay scale and are really affordable.

Horizon Health: 201 963 5774
(usually the wait for an appointment is a few weeks but they do the following services: cleaning/xrays/fillings/caps)

North Hudson Corp: 201 210 0200
(these guys book appointments a couple days after you call and they do cleaning/xrays/fillings/root canal)