Raised ridge at gumline?

[Arkeresia]

Ugh I've been free of tooth issues for a little while now and it's been great but I've recently noticed a kind of ridge that's formed at the gumline of my lower right back teeth. It doesn't look inflamed but now I've noticed it I can really feel it and there's a bit of a raw taste around that area when i run my tongue over it. Is it something I should get checked out? I'm not in pain and the teeth feel okay otherwise. I have a missing molar next to them but that's been out for over 2 years.
Thanks for any advice ?

 

[Gordon]

Can't tell you much from your description, any chance of a photo of the area?