There is no such thing as the best way to replace a big tooth that has fallen out, and missing teeth can be repaired by either implant denture repair or fixed denture repair. Which one is suitable for your situation, you need to consult the doctor. 1. Fixed Denture Repair: The main thing is to use the natural teeth on both sides as the abutment teeth, and then build a bridge to repair. This method requires the grinding of healthy teeth as bridge abutments, and is more suitable for teeth that do not need to bear too much chewing force. It is less suitable for the restoration of the last non-wisdom tooth that is missing. Fixed denture also has strict indications, it is recommended to choose the appropriate way after medical examination. 2. Implant restoration: Implant restoration does not require grinding of the abutment teeth on both sides. Currently, modern implant technology is more mature, and it has many advantages compared to fixed prosthesis. It is a better way to repair single missing teeth. However, it has higher requirements for the alveolar bone and your own health. Large teeth lost need to be combined with dental conditions, personal needs, etc., under the guidance of the doctor to choose the appropriate treatment program.