How can a dentist fix a loose tooth?

Each circumstance is individual to each patient and no two loose teeth are the same.

Sometimes a very loose tooth may require extracting.  Then the space with the tooth was may be filled using a denture/implant or a type of bridge.  Other times it can be splinted to the surrounding teeth it may required some deep scaling and polishing.  Having a the tooth examined within a week or so is important to help prevent further issues or pain.