My 18 month old started grinding her teeth after we weened her from the pacifier. Should I give it back?

She does it all day, even at daycare. And apparently at her nap as well, according to the school. It was a fight to ween her, but they started her at the daycare not giving her a pacifier at naps since the first day she started about a month ago. So she knew not to have it there, so it was never a fight. But at home and bedtime is a different issue, it took almost a month to slowly ween her off at bedtime. She never got a pacifier past a year, unless she was going to sleep. So its been a long Process! I dont know what to do, i dont wanna give it back and re-ween her, but i also dont want her ruining her teeth. Can somebody please help?!?