The ornamental design for a head for a powereddenture brush, as shown and described.
FIG. 1 is a perspective front view of a head for a powered denture brush showing our new design;
FIG. 2 is a perspective rear view thereof;
FIG. 3 is a front view thereof;
FIG. 4 is a left side view thereof, the right side view being a mirror image thereto; and,
FIG. 5 is rear view thereof.
The broken lines and the area immediately between the broken lines and the bottom edge of the second semi-circular bristle-carrying section shown in FIGS. 2 and 5 illustrate a portion of the brush head that forms no part of the claimed design. The broken lines showing a handle illustrate the environment in which the brush head is used and form no part of the claimed design.