Take on extreme bends The RootBuddy Niti tip plugger is made of specially manufactured nickel titanium. Thanks to the material it can take on extreme bends. That’s what makes this tip exceptionally flexible. The tip always returns to its original form! With the RootBuddy Niti tip plugger you can reach the most difficult spots in the root canal. This gives you complete control of the entire root canal, even the most complex ones.