With the popularity of dental implants, more and more people are opting for dental implants. His advantages speak for themselves, but not everyone is suitable for dental implants. In any case, it is a type of surgery. Which patients can receive implant surgery? 1. Adults in good general condition, physically and mentally healthy, whose bone and teeth development has been set. 2. At least 6 months after surgery or trauma to the jaw bone or alveolar bone, at least 3 months after tooth extraction, bone defects have been recovered, and the bone form and quality of the implant bed are good. 3. The oral soft tissue is free of obvious inflammation and lesions. 4. The patient has a strong request and the economic conditions allow it. What are the systemic conditions that prevent a patient from receiving implant surgery? 1. Patients suffering from chronic wasting diseases such as tuberculosis, diabetes, hemophilia, hematological diseases, patients with intermediate or advanced tumors, or patients undergoing radiation therapy. 2. Patients suffering from mental illness and unstable psychological quality. 3. Patients suffering from hypertension, coronary heart disease, hemiplegia, cerebrovascular diseases, and weaknesses such as those who cannot withstand dental surgery. 4. Those who have drug and alcohol abuse, severe mental weakness and poor physical fitness. There are relative and absolute contraindications to implant surgery. For reversible diseases, dental implant restoration can still be performed after they are controlled or cured through treatment. What are the local conditions that prevent a patient from undergoing implant surgery? Although dental implant surgery is a minor surgery, it must be prepared well before the surgery, and the following local conditions should be strictly prohibited or suspended until the condition is cured 1. Acute and chronic inflammation of the oral mucosa and peri-maxillary tissues. Such as acute infection of the gums, acute inflammation in the oral cavity, maxillary sinusitis, etc., should be cured before implantation. 2. Implant area with buried teeth and residual roots. 3. Jaw bone cyst, osteomyelitis, benign and malignant tumors and abnormal bone lesions. 4. Temporomandibular joint abnormalities Due to joint inflammation, deformity and masticatory muscle inflammation caused by mouth opening disorder, pain, abnormal movement trajectory of opening and closing mouth and obvious popping sound. 5. Occlusal abnormalities: Habitual overbite should be avoided for implants. 6. Poor periodontal and bone quality of the adjacent abutment teeth. 7. Excessive resorption and atrophy of the alveolar bone, easy penetration of the maxillary sinus in the maxilla; easy penetration of the mandibular canal in the mandible during implant placement. Severe resorption of the jaw bone should not be directly implanted, but should be implanted at the same time. 8. Fracture of jaw bone, including pathological fracture and traumatic fracture, should be implanted after healing. 9. Those who have severe grinding habits and poor oral hygiene.