The ornamental design for an insert for dentalinstruments, as shown and described.
FIG. 1 is a top perspective view of an insert for dental instruments of the present invention;
FIG. 2 is a top view of an insert for dental instruments shown in FIG. 1;
FIG. 3 is a bottom view of an insert for dental instruments shown in FIG. 1;
FIG. 4 is a left side view of an insert for dental instruments shown in FIG. 1;
FIG. 5 is a right side view of an insert for dental instruments shown in FIG. 1;
FIG. 6 is a back side view of an insert for dental instruments shown in FIG. 1; and,
FIG. 7 is a front side view of an insert for dental instruments shown in FIG. 1.
The dash-dot-dash broken lines adjacent the claimed areas represent the bounds of the claim, and all other broken lines are included for the purpose of illustrating portions of the present invention that form no part of the claimed design. None of the broken lines form part of the claimed design.