The ornamental design for a stand for dentalinstrument, as shown and described.
FIG. 1 is a perspective view of a stand for dental instrument showing the claimed design;
FIG. 2 is a top view thereof
FIG. 3 is a bottom view thereof;
FIG. 4 is a left side view thereof
FIG. 5 is a right side view thereof;
FIG. 6 is a rear view thereof;
FIG. 7 is a front view thereof; and,
FIG. 8 is a perspective reference view of the stand for dental instrument of the present invention showing the claimed design in an environment in which it may be used.
The broken lines in the figures show portions of the stand for dental instrument and environment that form no part of the claimed design.