Thanks for all the replies
I did this cut with a broken china ashtray and its 7cm long and 1cm wide. They used some special glue to put in it and it scabbed over for about two weeks, but before then I'd never heard of the glue method. I have never cut over this scar as its a constant reminder to me of how close I came to fully going over the edge. I have cut near it in the surrounding areas though. But my question was has anyone else had this type of treatment and have they found that when they have cut themselves that the scars are more prominent since having the glue put in.

I havent tried googling this question as I have no idea what the name of the glue was that they used.