In many cases, you won’t experience any symptoms to alert you to the need for a filling. It’s for this reason that routine check-ups are so important, as your dentist will be able to identify any problems, and act to address them immediately – before symptoms occur. Sensitivity and pain after eating and drinking are tell-tale signs that it’s time to make an appointment right away and not to wait until your next routine check-up. The sooner the problem is addressed, the better.