The Health Canada agency urged consumers to return Spinbrush Pro Clean SONIC Recharge Toothbrushes to the retailer because of the risk of fire, shock or burns.
The units are manufactured by the Church & Dwight corporation, which advised consumers to stop using the toothbrushes and return them.
Both Canadian and U.S. Food and Drug Administration warnings said the voluntary recall only affects certain models of rechargeable toothbrushes and not battery-powered units.
"This recall is limited to specific lots of the product … DD9355 to 9365 and DD0002 to 0122 that were distributed between February 2010 and October 2011," the Canadian warning said.
The company said consumers with the affected units could call 1 888 709-4100 or check in at www.sonicrechargereturn.com.