The ornamental design for a guidemember for a dental drill, as shown and described.
FIG. 1 is a front view of the guide member for a dental drill.
FIG. 2 is a top view thereof.
FIG. 3 is a bottom view thereof; and,
FIG. 4 is a reference view showing that claimed article is used in combination with the dental drill.
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.
Security device comprising a stop member for drilling instrument used in particular in dental surgery and device pre-calibrating and storing drilling depth