Considering that your teeth are securely anchored to your jawbone, they might seem immovable without orthodontia. But teeth shifting out of alignment can occur for several reasons other than when braces are first removed. Not only that, the shift can cause problems with your bite that may result in jaw, facial or neck pain if left untreated.
If you’ve noticed a shift in your smile, it’s helpful to know that some movement is common for everyone. But in some cases, you may need the guidance of a dental professional.
Take a look at the article posted by Colgate explaining Why Does Teeth Shifting Happen