Abstract: A dental bur (10) is disclosed having an elongated shank (11) which extends to a cutting head (12). The shank includes a gripping portion (14), a tapered transition portion (15), and a neck portion (16). The diameter of the neck portion (D1) is generally the same as the diameter of the cutting head (D2). The cutting head includes six helical cutting flutes (20) extending from the neck portion (16) to a tip (18). Each cutting flute has a top cutting edge (21) and a series of generally rectangular shaped cross-cut notches. The rectangular shaped cutting notches are formed by a generally flat floor (25) and two oppositely disposed sidewalls (26). The floor forms a floor cutting edge (28) while the sidewalls form sidewall cutting edges (29). The intersection of the floor cutting edge with the sidewall cutting edges form two interior cutting corners (30).