What causes tooth looseness?

Tooth mobility refers to the phenomenon where a tooth exhibits slight movement or wobbling during biting. Normally, teeth should be stable and not show noticeable looseness. If tooth mobility occurs, it may be caused by one of the following reasons: 1. Periodontitis is a disease affecting the periodontal tissues, leading to damage of the gums, alveolar bone, and supporting structures around the tooth, which in turn causes the tooth to become loose and mobile. Periodontitis is typically caused by bacterial infection around the tooth; if not treated promptly, it can severely compromise tooth stability. 2. If a tooth suffers trauma from external impact or excessive biting force, it may result in damage to the tooth root or alveolar bone, causing tooth mobility. 3. Tooth displacement refers to a change in the position of a tooth during occlusion, which may occur due to injury to the surrounding gum tissue or loosening of the supporting tissues around the tooth. Tooth displacement can lead to widening gaps between teeth, thereby contributing to tooth mobility.