40 years old teeth all lost according to their own situation can be considered for activity denture repair or implant restoration, it is recommended to repair in a timely manner so as not to affect the chewing function. 1. Activity denture repair. Full mouth movable denture repair is suitable for patients with general economic conditions and missing teeth, arranging artificial teeth on the abutment and utilizing the adsorption force between the abutment and the alveolar mucosa for fixation, but if the adsorption force is not good, it is easy to cause the denture to fall off, and you need to take up and down to put on the movable denture in your daily life. 2. Implant restoration. Implant restoration is suitable for patients with good economic conditions and good alveolar bone volume, utilizing the implant to be fixed in the jawbone, and the upper end for movable or fixed restoration, which is better than the movable denture restoration, but the price is expensive. If you are 40 years old and have lost all your teeth, it is recommended that you go to the hospital in time to check your oral condition and choose a denture that suits your condition.