I think when you have a fine tipped instrument that slips in to any crowded area, such as the "Nebraska" added to it an extremely sharp cutting edge, it allows us to access & easily remove tartar in every area possible. I can tell a huge difference between Hue Friedy and XPs. The difference is night and day, especially for scaling and root planing! Every friend of mine going through hygiene boards, I tell them XPs are a must!