If the filling material is tooth powder or amalgam, it will take 24 hours before biting hard objects, while resin material can bite hard objects after filling. 1. It takes about 24 hours for tooth powder (such as glass ionomer or zinc polycarboxylate) or silver amalgam to fully cure and become hard and wear-resistant after filling; therefore, it is not advisable to chew hard objects with the affected side during this period, and it is generally recommended to chew food with the other side within 24 hours, and it is not advisable to brush and rinse on the day of filling. 2. Oral resin material adopts special curing mode, so the resin material has been fully hardened after filling; after filling, it can be used for normal chewing and does not affect normal brushing and rinsing. It is recommended that no matter what kind of material is used to fill the teeth, it is not advisable to consume too much hard or sticky food, so as to avoid the situation that the filling material crumbles and falls off.