Porcelain teeth fall within how long must be glued back according to the teeth shift situation to judge, there are long and short, and there is no strict time limit, the best conditions immediately glued back. 1. If the porcelain teeth lost teeth displacement is more obvious, it is best to be glued back as soon as possible within 1 ~ 2 weeks, after the loss of the crown of the teeth occlusal function is affected, may lead to the position change, so you need to deal with as soon as possible. 2. If the individual teeth are more solid, porcelain teeth fall out of the teeth did not produce obvious displacement, generally within a month can be glued back, so there is no specified time. Usually must do a good job of daily care health care, it is best not to often stimulate the dental tissues, avoid eating hard objects or often strenuous exercise.