Hello Dr Shaffie, I’m wondering if you can help me. I had braces for six years and removed them about three years ago.  I had them removed and put in a permanent retainer (a wire behind my teeth). My bottom teeth shifted forward (Class III underbite) so they removed the retainer and gave me a removable retainer to wear for a few months. However, it makes me feel like my teeth are very wobbly and loose. Is this normal or should I be concerned? Is there any risk that my teeth are so weak they could fall off if I bite something too hard? Any information would be great, thanks.