be a part of the denture living community

I have had my upper plate dentures for a week, and I find I am doing well with the exception of the right side of the plate that has a V shape cut out in the plate. It is like the V cut in the middle of the upper plate. I find the area very sharp, and is irritating my gum area. My friend has dentures, and she says she does not have a V cut out in her plate like I do. can anybody explain to me if they have that, and why they do that?