Losing teeth at age 55 is not normal, permanent teeth can be used all the time with normal maintenance, and the notion that you lose your teeth when you get older is not true.
Teeth fall out because the alveolar bone around the root resorbs, the periodontal tissue attachment is lost, and the teeth lose the support of the surrounding hard and soft tissues, and will fall out. Under normal circumstances, with good oral hygiene and regular oral checkups, the alveolar bone and periodontium are maintained in a healthy state, and resorption and loss will not occur.
Most tooth loss is caused by severe periodontitis and apical periodontitis, and if these diseases receive regular and systematic treatment at an early stage, they can be prevented from developing to an advanced stage to the extent that the teeth become loose and eventually fall out.
If you experience any of these symptoms, it is recommended that you visit a hospital promptly.