a sculpt tool is missing

So I sculpted for a while when I realised that the crease tool has been deleted, or, well, it’s replaced with another brush tool. Same thing happened to me not long ago wich I fixed by just hitting “reset brush”. Doesn’t work now though.

I also looked around in the user preferences menu without any luck, so is there any other way to reset brushes that I’ve missed? And how do you delete brushes in the first place? Just so I know what hotkeys (if there are any) to avoid.

Thanks

Select a brush, then in the tool tab, instead of what is selected by default , select “Crease”

http://i.imgur.com/449SU.jpg

And the crease brush will take the place of the selected one.

thank you!