Oh dear sounds like you’ve taken in a big job but I think the wd40 shoukd do it, I had a tooth out a filling and a clean and polish  that was the worst bit. Called In the ran ge then Tesco the big  one in Wigan this time I got half wAy Round when the fire alarm went off and we all had to leave our trolleys where we were and make our way into the car park , no fire engines came and after about 10/15 minutes we were allowed back inside .  Finished my shopping the alarm was still going when I got to the check out. Sensation us just coming back in my mouth now going to make some soup and get some pain killers . Miserable day again xx