Try not to eat hard food,because they will damage the teeth we just wearing it, in order to protect the new teeth, you have to pay more attention on what you eat or chew.
If you feel uncomfortable after wearing porcelain crown or bridge, don't be nervous. Don't eat hot or cold things within two weeks of wearing PFM, in case it causing pain. You can eat normally after two weeks, but don’t eat anything special hard stuff. So eat more soft foods. Remember that do not eat hot or cold food during the two weeks, such as hot pot, ice cream, to prevent from triggering pain. if you feel mild discomfort,don't be nervous, mostly you will get used to it after a while.
At the beginning, do not eat food that is too cold or too hot, it is not good for your new teeth. You don't need to use porcelain teeth to bite hard things to avoid broken porcelain; you need to go to the dentist once every six months. Brush your teeth, and it is better to use the dental floss to clean the porcelain teeth.