The number of years a fixed bridge restoration lasts depends largely on the health of the natural teeth and the fixation material used. Fixed bridges are fixed to the natural teeth at the front and back of the missing tooth, so the life span of the natural teeth at the front and back determines the life span of the fixed bridge. Regular maintenance of oral hygiene, periodontal condition and good health of the natural teeth will ensure that the fixed bridge will function well for a long time. Secondly, the degree of wear resistance and strength of different materials are different, so it is important to maintain oral hygiene after the fixed bridge restoration to ensure the health of the natural teeth. And when making a fixed bridge, choose a relatively high strength metal-ceramic material to achieve long-term use. The clinical service life of fixed bridges is an average statistic that can reach more than 10 years, and this varies from person to person.