An oral care mouthpiece (10) is disclosed. The mouthpiece includes a shell (15) having an arch shape corresponding to a dental arch. The shell (15) includes a wall corresponding to facial surfaces of teeth in the dental arch, and a bite plate corresponding (157) to biting surfaces of the teeth. The mouthpiece also includes a wicking layer (19) on an inner surface of the wall. The mouthpiece further includes a filament layer (23) on the wicking layer.