The ornamental design for a dentalstoragecontainer substantially, as shown and described.
FIG. 1 is a perspective view of a dental storage container in a closed position;
FIG. 2 is a top view thereof;
FIG. 3 is a bottom view thereof;
FIG. 4 is a front elevation view thereof, the rear, left and right side elevation views being identical thereto;
FIG. 5 is an exploded view thereof;
FIG. 6 is a perspective view of the dental storage container in an open position showing a dental tray over a base, where broken line representations of the tray are for illustration purposes only and form no part of the claimed design;
FIG. 7 is a top view of the dental tray;
FIG. 8 is a bottom view of the dental tray, where broken line representations of the tray are for illustration purposes only and form no part of the claimed design; and,
FIG. 9 is the environmental perspective view of the present invention as shown in FIG. 6 , where broken line representations of the tray and dentures are for illustration purposes only and form no part of the claimed design.