I have a permanent retainer in my mouth and I was wondering if the mouth needs to be washed in ghusl. I looked on sistanis website and it didnt go into much detail. And if someone accidentally eats something najjis and they wash their mouth, is anything different if you have that type of permanent retainer?

1- No inside the mouth doesn’t need to be washed, so you can do ghusl with the retainer

2- No nothing would be different. Simply washing the mouth is sufficient