1. If the alveolar ridge can support implants, 6 to 8 implant nails + 14 fixed dentures for the entire mandibular mouth will be implanted. The cost is about 40,000 to 50,000 (charged by regular hospitals. This method allows patients to restore chewing High efficiency) 2 If the alveolar ridge (gum) is really flat, alveolar ridge augmentation surgery (implantation is not allowed) + mandibular full removable denture. The cost is about 4,000! The restored chewing efficiency is low