Health Canada issued a recall Wednesday of Arm and Hammer's Spinbrush Pro Clean Sonic rechargeable toothbrush due to the possibility of fire, shock or burns.
There is "a small risk that the charging base may overheat, with localized melting and sparking. The risk...appears to increase somewhat with the age of the product," manufacturer Church & Dwight said in a statement.
The company has received six reports of overheating in the U.S. and one in Canada, but no reports of injuries, the statement said.
The recall includes toothbrushes sold between February 2010 and October 2011 with the lot numbers DD9310 to 9365 and DD0002 to 0122. Lot numbers are embossed on the bottom of the charging unit, which also has the word "Spinbrush" printed on it. The word "Sonic" is printed on the toothbrush handle.
Consumers should stop using the units and return them to the company for a full refund (visit sonicrechargereturn.com for information).
Church & Dwight issued an advisory on several of its Arm and Hammer battery-powered toothbrushes in November, warning consumers that the brush head could break and become a choking hazard if it's not replaced when damaged or loose or used for three months.