After a tooth is missing or extracted, it is important to fill in the empty space where the missing tooth was or it will result in adverse consequences such as shifting of neighboring teeth, shrinking of the frontal bone, and compromised oral health. In most cases, the use of dental implants is the best way to fill missing teeth. Patients with long-term total tooth loss have a reduced height due to atrophy and resorption of the dental bed. The most agonizing problem for patients is the instability of dentures, especially the mandibular denture, which falls out with a single mouthful. If you use artificial dental implant technology, according to the jawbone, implant several or more than a dozen implants, can be more satisfactory solution to the problem of denture stabilization, restore and improve the chewing function. Dental implants: Dental implants are a new denture technique for the treatment of missing teeth, which mainly consists of implants, abutments, dentures and retention screws. Whether it is a single missing tooth, or multiple missing teeth and a full mouth of missing teeth, it can be restored by implant denture. A titanium root (artificial tooth root) is surgically inserted into the bed of the tooth in the missing tooth area, and after four to six months of fusion between the metal root and the surrounding bone tissue, the upper denture (denture) can be securely supported, and its appearance and function are just like natural teeth. Usually, a person who is able to undergo conventional tooth extraction surgery can consider implant restoration. Patients with specific chronic diseases such as diabetes, uncontrolled heart disease and high blood pressure, blood disorders, osteoporosis, and oral cancer requiring radiation therapy after surgery are not suitable for immediate implant restoration. In addition, patients who cannot maintain good oral hygiene conditions such as smoking and alcoholism are also not suitable. It should be noted, however, that implant dentures are not age-restricted, so that the many elderly patients who suffer from missing teeth can finally share in the benefits of this successful technology. In conclusion, it is only after a thorough evaluation of the physical condition that the doctor can formulate a suitable treatment plan. Currently, millions of dental implants are used worldwide every year to solve the pain of missing teeth, and the longest clinical use of dental implants in a large number of clinical cases has exceeded 40 years. Therefore, we can say that permanent use of dental implants is also possible if they are well cared for.