My father had physical problems but not dementia. Late one night I went to his apartment. He had had a bowel movement and his back end was covered with it. He was very introverted and super modest. He wanted to wait for the aide the next morning, but I finally talked him into letting me clean him, fearing he would be in discomfort. After that he let me care for him very intimately. Usually, I could find a man to take him in his wheelchair into the men's room. Ever since I have wondered if I did the right thing feeling that he just suffered in silence. Anyone else solved these different sex problems?
Sure I would be embarrassed, but ultimately thankful if it reversed.
As a one-off personal care helper I agree with Lea - think no more about it.
If the situation is arriving for a permanent personal care helper role, I'd look for alternatives.
You did the right thing with your father bc the right thing was getting the man cleaned up properly, and that's that. Don't give it another thought.
Another temporary solution could be the installation of a bidet, which he could use himself to do some of his own cleanup. There are many "add on" models that retrofit to existing toilets.
I've told my sons that in no way do I want them to be doing that for me themselves if at all possible.