Third-degree loose teeth are generally uninsurable. Third-degree tooth loosening indicates that the tooth is loosened more than 2mm, not only in the buccolingual direction, but also in the central direction and vertical direction, that is, there is loosening in all directions, which is generally impossible to keep, and needs to be extracted in a timely manner.
Under normal circumstances, teeth grow in the alveolar bone without looseness. Early loosening of teeth is generally considered to be related to periodontitis. In addition, due to oral hygiene is not clean lead to the appearance of tartar or with age, teeth will also appear loose. So usually need to do a good job of cleaning and hygiene of the teeth, to avoid the teeth again loose situation.