When you have had a composite or glass ionomer filling
set by the blue dental light, you are good to go.
The filling is set hard and you can eat and chew as normal. That said, if you have had a large build up on one of your front teeth, it is important to keep in mind that this will never be as strong as your natural tooth and you must be aware of this and be careful with harder foods such as chocolate bars and apples. I suggest that you either cut up harder food or use your stronger teeth on the side.
Try also to avoid biting fingernails, chewing pens, opening bottles (bonded teeth or not!!!) etc. with your bonded teeth as this will put them under increased stress and they will be more likely to fracture.
Coffee, tea, red wine and all the foods that cause staining on your natural teeth, will also cause staining on and around the bonded material, so reduce the consumption of these wherever possible. Fortunately, it can most of the time be polished off, but the cleaner the filling remains, the better.
Smoking can cause a yellowing of the white composite material- which you will be able to see (unlike the damage you are doing to your lungs). Just another reason, in addition to gum disease and heart problems to kick the habit.
Any material that sets chemically generally takes about 24 hours to set fully. This is true for amalgam and glass ionomer cements. Since an amalgam filling is more likely to be on a chewing surface and thus taking a lot of pressure, it is best to take it easy for a full day, to ensure the filling gets to maximum hardness before you eat and chew as normal. A softer diet is a good idea for that day.
When the dentist has finished a filling they will check to see if it is too high in your bite and adjust it. Sometimes because you are numb, it is not always that easy to get you to bite in your normal position and so the filling may not be adjusted fully. If after the anaesthetic has worn off, the tooth feels high, give it a few days to settle down, but if the feeling persists, return to your dentist who will make the necessary minor adjustments.
It is important to consider why you needed the filling in the first place, and take steps to try and stop it from happening again in the future. As I have said many times, this comes down to better brushing
, good diet
and getting the right amount of fluoride