Teeth need as much care as the human body, and they begin to loosen slightly by the age of 40. If you do not develop good dental care habits, it will be more likely to be damaged. 1. How to prevent toothbed recession To keep your teeth in a healthy condition, have your teeth cleaned twice a year and have your dentist perform a comprehensive checkup. Keeping your teeth free of tar and dissolved bacteria will keep your dental bed strong and flexible without recession. Another important point to note is that no matter what your age is, make sure you choose the right toothbrush and dental floss to remove tartar. Ask your dentist to check if you are brushing your teeth the right way. If you are too careless and brush your teeth back and forth instead of rotating them, you may cause premature recession of the dental bed. Another preventive measure is to use a toothbrush with an eraser head and massage the toothbed daily. 2. Teeth grinding and straightening There are a variety of options available to keep teeth young and healthy. Consider grinding or straightening your teeth. This involves polishing the edges of several teeth to make them more attractive. If the teeth have become discolored, ask your dentist about tooth decoloration, bonding, or porcelain inlays. Even if there are gaps in the teeth, they can be improved on the inlay. If you are missing a tooth, this method can also avoid tooth replacement. 3, maintain dental health 30 years old. dd enamel thinning; 40 years old, causing deformation, gaps. dd dental bed began to shrink dd original enamel began to decay; 50 years old, susceptible to infection and damage. Careful protection methods: 1, proper brushing and use of tooth pulling thread to remove tartar; 2, visit the dentist twice a year for examination and cleaning; 3, choose decoloration, bonding or inlay porcelain teeth; 4, fillings or plastic surgery for teeth that have changed.