Okay, this may be a weird question. I just got into freaking about my teeth and found out my teeth can heal on it's own with the correct diet (fruits, veggies, but what else?? Extra help on this subject will be appreciated) But I want to know if Cup noodle is bad for me and my teeth.

Extra note is that now I am freaking out over the fact I can bite into this weird sand like thing in my mouth, at first I thought it was just dirt from somewhere, but then I THINK a chip I have in my mouth grew bigger. :\ I don't think I can goto the dentist. I really don't think we have the money for it. So is there anyway to hold off the chipping or at least try to keep the rest of my teeth healthy??