The incisor root is broken and the filling is not strong. If you rely on fillings alone, they are prone to fall out. The specific situation needs to visit your doctor to determine your own situation. Fixation of fillings is generally applicable to small localized defects or crown bonding, etc. Once a tooth is broken, the first step is to take a radiograph to check the root condition. If the remaining length of the tooth root is sufficient, and the gum damage is small, restoration can be considered to retain the fixation. If the situation is serious, it is necessary to consider extraction and then do implant restoration. It should be noted that some poor restorations, even if the tooth is temporarily fixed, can lead to tooth loss or even cause gingivitis. If the root of the incisor tooth is broken, it is recommended to consult a doctor in time and choose the appropriate restoration method according to your situation.