Dental fillings lost teeth need to be re-examined and dealt with, dental repair, braces restoration and protection, serious cases need to be extracted from the affected teeth. 1. After a period of occlusal stimulation of the filled tooth, there may be loosening of the tooth filling, falling off, embedded food, resulting in secondary caries of the local teeth, the need to remove the secondary caries and the remaining repair material for re-filling treatment. 2. If the filling material falls off, the tooth is secondary caries, the caries area is large or has invaded the dental nerve, root canal treatment can be carried out after dental crown restoration or crown restoration. 3. In severe cases, the tooth will show loosening and shedding of teeth and materials, which will cause pain and the teeth are afraid to bite, etc. The tooth will need to be extracted if there is severe splitting and pain after the tooth material is shed. If the above problems and symptoms occur, it is recommended to seek timely medical examination for treatment.