Master Zhang suffered from long term tooth loss and was uncomfortable wearing dentures, so he went to a dental clinic and had two dental implants. He felt good at the beginning, but after 5 years, he gradually had problems and the implants loosened. After going to the hospital, he found that there was severe peri-implantitis and severe bone resorption around the implants, which had to be removed. He went back to the dental clinic where the implant was made to ask for an explanation, but was told that it was due to the patient’s negligence in maintenance and that he should pay for another implant. The implants, known as the third set of teeth, are more natural and beautiful than the traditional dentures and are close to the real teeth in terms of chewing taste and strength, but the price is not expensive. How can they be repaired if they become loose after a few years? Dental implants are basically similar to real teeth in form, function and longevity, and the longest-used dental implant in the world has been used for more than 40 years. Research shows that the success rate of dental implants is more than 98% in 5 years and more than 95% in 10 years, which varies from person to person and involves several factors: 1. If the condition of the teeth is not good, such as serious resorption, periodontal inflammation, etc., it is necessary to check the degree of bone resorption, control the bone resorption and eliminate the inflammation before implanting bone powder. The choice of implant system is an important factor that affects the life of dental implants. The implant system has strict standards in terms of production process, shape design, connection method, processing precision, sterilization and packaging, etc. A good dental implant system has advanced technology, reliable quality and long service life. The professional level and clinical experience of the doctor are also important, so it is recommended to choose a regular dental hospital for dental implants. 3. After implantation After implantation, if the surrounding natural teeth exist, they can support each other and gradually integrate into the human body, and it is possible to use them for a lifetime. Therefore, patients should pay attention to cleaning and visit the hospital regularly to avoid implant infections. “Even real teeth can fall out if they are not properly maintained. Therefore, you need to pay more attention to your teeth, whether they are dental implants or your own primary teeth, because once a tooth is missing, it is not renewable and can only be restored by artificial reconstruction methods. If the bone around the implant is resorbed but the loosening of the implant is not obvious, the flap can be scraped and then tightly sutured, but if the implant is already obviously loose and there is a clear lack of bone tissue support around it, it should be removed. If the remaining implants are sufficient to support the denture, re-implantation is not necessary, otherwise, re-implantation can be done in the original implant site after one year, when new bone has been formed.