Moving teeth during orthodontic treatment with braces, aligners or removable plates causes temporary resorption (softening) of the bone, which allows each tooth to move to the desired position. After treatment ends (once force is no longer being applied to the teeth), the bone regains its normal hardness within 3 to 6 months. During treatment and for up to 6 months after it ends, your teeth may feel unstable and you may even notice some of them wobbling slightly. The teeth most affected are those that have been rotated.
This answer is for general information. Your own case needs an examination by an orthodontist.