Dental implants are internationally recognized as the preferred means of restoration for missing teeth and are the ideal choice for people with missing teeth. Why among the various restorative methods, dental implants can be the best and the closest option to natural teeth. Compared with traditional dentures, dental implants have many outstanding advantages: 1, no damage to neighboring teeth: porcelain bridge is the traditional restoration method for missing teeth, but it requires grinding down the healthy teeth on both sides of the missing teeth, which is a great pity; while dental implants are implanted in the alveolar bone of the missing teeth, and this is the basis for restoring the missing teeth, without involving the neighboring teeth, not to mention damaging them. 2.Stable and reliable: The implant (i.e. artificial root) is connected to the alveolar bone through osseointegration, which is very strong, no less than the natural root of human teeth, and can be rooted in the patient’s mouth like a real tooth. 3, the principle of more scientific: natural teeth will be chewing pressure in the mouth through the root to the alveolar bone, while dental implants will be chewing pressure through the artificial root (implant) to the alveolar bone, the same biomechanical principle, so it can withstand the strong force, chewing efficiency than traditional dentures have been substantially improved. The traditional porcelain bridge is fixed to the natural teeth on both sides of the missing tooth gap by means of cementation, and uses the natural teeth for support and transfer of chewing pressure, which increases the burden on the natural teeth and affects their service life. 4, small and comfortable: small size, no abutment and ring structure, no foreign body feeling in the mouth, conducive to maintaining oral hygiene, feel comfortable, make you forget the existence of dentures. 5, broader indications: in the case of no teeth in the whole mouth or all the posterior part of the molar area is missing, only movable dentures can be installed in the past, but movable dentures are not satisfactory in terms of beauty, comfort, chewing function, self-cleaning ability, etc., and the implantation of artificial roots can make these patients get fixed denture repair. 6.It helps to prevent the resorption of alveolar bone.