FIG. 1 is a perspective view of a dental bur showing my new design;
FIG. 2 is a right side elevation thereof;
FIG. 3 is an inverted left side elevation thereof;
FIG. 4 is an end elevation thereof shown on an enlarged scale;
FIG. 5 is a right side elevation of a modified embodiment of the design shown in FIGS. 1 through 4; and,
FIG. 6 is an inverted left side elevation thereof.
The broken lines in the drawings are for illustrative purposes only and form no part of the claimed design.