Q.
Hi, I hope you can give me a solution. I had Invisalign for nearly two years, and now have a retainer bonded onto the back of my teeth. Since I have had this retainer bonded on, I have had a strange bitter taste coming from it when I touch it with my tongue or when I swoosh saliva around it. I had the original plastic one removed and a metal one bonded on to see if this helped, but i still have this horrible bitter taste.

I assume it is the bonding used. Please help me, as I have lost faith in my current orthodontist.

Sue