The ornamental design for a packagingbase for adhesivepre-coated orthodontic appliances, as shown and described.
FIG. 1 is a perspective view showing a new design for a packaging base for adhesive pre-coated orthodontic appliances;
FIG. 2 is a top view thereof;
FIG. 3 is a right-side view thereof, the left-side view being a mirror image thereof;
FIG. 4 is a rear view thereof;
FIG. 5 is the front view thereof; and,
FIG. 6 is a bottom view thereof.
The broken lines in the drawings depict portions of the packaging base for adhesive pre-coated orthodontic appliances that form no part of the claimed design.