Teeth are held in place by a periodontal ligament that attaches to the bone. Bone, a living tissue, naturally changes and modifies over time. Things that can influence the bone’s support of the teeth are the bone’s density, certain medications, trauma, underlying skeletal conditions, changes in chewing habits, other perioral muscular habit changes, changes in breathing habits, and the loss or wear of neighboring teeth or tooth structure—to name a few.
If you have noticed that your teeth are shifting, it may be time to consider treating your orthodontic malocclusion. Alternatively, you may simply want to consider a retainer to prevent further change.