Hi
Know the reason why the filling has come out..
If it's old filling n worn off then u can go for filling it again.
If the filling has come out immediately with in few days or months then try to get it restored with light cure restoration or go for crown if the cavity is wide..
Next Steps
know the reason n get it re filled accordingly,as per instructions and advice given by dentist.
Health Tips
*Bursh ur teeth twice daily using correct technique.
*Rise after each meal .
*vist ur dentist for every 6 months.
*Once restoration is done avoid chewing hard food stuff from restored side.