The ornamental design for a dentaldrill, as shown and described.
FIG. 1 is a front view of the dental drill.
FIG. 2 is a back view thereof.
FIG. 3 is a left-side view thereof.
FIG. 4 is a right-side view thereof.
FIG. 5 is a top view thereof.
FIG. 6 is a bottom view thereof.
FIG. 7 is a cross-section view taken along line A-A of FIG. 5; and,
FIG. 8 is a reference view showing that the dental drill in combination with the guide member in use.
If present, dotted lines shown in the accompanying drawings are intended to illustrate environmental features not necessarily intended to be a part of the claimed drawing in the figures in which they appear.