The ornamental design for a dentifricedispenser, as shown and described.
FIG. 1 is a perspective elevation view of a dentifrice dispenser;
FIG. 2 is a front view thereof;
FIG. 3 is a right side view thereof;
FIG. 4 is a back view thereof;
FIG. 5 is a left side view thereof; and,
FIG. 6 is a top view thereof.
The evenly-dashed broken lines in the drawings illustrate the portions of the dentifrice dispenser that form no part of the claim. The dot-dash broken lines in the drawings define the bounds of the claim and form no part thereof. These boundary lines have been omitted from FIG. 1 for ease of understanding.