The FDA issued a warning of serious injuries and potential hazards associated with the Arm & Hammer and Crest Spinbrushes. Reports warned that while turned on, the brush head has either “popped off” or broken off in the user’s mouth or near face, causing cuts to the mouth and gums, chipped or broken teeth, swallowing or choking on the broken pieces, and injuries to the face and eyes. Before using the Spinbrush inspect it for any damage, loose bristles, make sure the brush head is connected tightly to the handle and test it outside of the mouth before use.