Dental implants, also known as implant dentures, are a dental restoration technology that has been gradually developed in the last decade or so. They are surgically implanted in the tooth socket of the missing tooth area and have become one of the conventional treatment modalities for repairing tooth loss or missing teeth. However, the technology is still in development, there are the following benefits and hazards: 1. Advantages 1, retention and stability: the location of the dental implant is supported by the alveolar bone, closely integrated, stable position, like real teeth rooted in the mouth; 2, not easy to wear: dental implants rely on their own artificial roots fixed, will not damage the adjacent teeth, can avoid the bite of the adjacent teeth overburdened; 3, strong and durable: dental implants restoration time is long The dental implants can be used for a long time because they are closely and well integrated with the alveolar bone, and they are powerful in chewing and do not affect the resorption of the alveolar bone; 4, aesthetics: they can be finely adjusted according to the patient’s face shape and the color of his teeth to achieve overall harmony and beauty; 5, comfort: the dental implants can be closely and well integrated with the alveolar bone, and like the native teeth, there will be no tightness between the teeth caused by the abutment rings of the dentures, no foreign body feeling; 6, easy to clean; 6, easy to clean, easy to clean, easy to clean. It is easy to clean: dental implants can be cleaned directly with toothbrushes and dental floss without taking them off, which is convenient and avoids the trouble of taking them down. The first one is infection: improper operation or incomplete disinfection during the extraction process before the dental implant can easily cause infection, or improper suturing of the dental implant, the wound is prone to infection; 2, the interdental papilla is missing: the alteration of the alveolar peak after tooth extraction, the height of the alveolar peak between the dental implant and the natural tooth changes, which may cause the interdental papilla between the dental implant and the adjacent tooth to be missing, forming a “black The “black triangle” is formed.