

Mould on retainer?
I had recently cleaned my retainer with Polident for the first time after not using it for months. It seems like there is some black stuff along the top ridges of the retainer (residual mould perhaps?). I don't think I can afford another retainer so I wonder if I still use it.
Context: I haven't been using my retainer as I gradually forgotten about it (it's bad i know) and instead stored it in a container for which had a tissue to absorb moisture. Eventually, it grew plenty of mould (no picture unfortunately) so I decided to brush it with dishwater soap and use Polident afterwards to get rid of the microbes.
My other part of retainer (not pictured here) seems pretty fine.