The tool for the treatment of surfaces of dental materials comprises a spindle one end of which is provided with an abrasive layer that forms a head and the other end of which is provided with means for connection to a dental handpiece. The end of said spindle on which said abrasive layer is arranged is in the form of a core whose profile is similar to the profile of said abrasive layer, said abrasive layer enclosing said core with the exception of its termination on the handpiece side and having a thickness of at least 0.2 mm. Such a tool is substantially more rupture-proof and allows faster and more precise work.
