Clínica Dental Dra. Márquez  Av. Catalunya 76 baixos, 43500 Tortosa,

I use this dentist which is on the same side as Lidl, on the opposite corner. They have always been very good, limited with English, saying that, the receptionist speaks good English, suggest you call in and ask, they don't bite!! very clean and excellent work, no pain!!!
I had 2 fillings about 6 weeks ago cost 120 euros, they have a
website, hope this is of help to you ;)