FIG. 1 is an isometric view of an oral brush head showing the design hereof;
FIG. 2 is a front view hereof;
FIG. 3 is a rear view hereof;
FIG. 4 is an inverted left side view hereof;
FIG. 5 is a right side view hereof;
FIG. 6 is a top plan view hereof; and,
FIG. 7 is a bottom plan view hereof.
The portions of the oral brush head shown in broken lines form no part of the claimed design.
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