Electric toothbrushes give kids--and adults--one less excuse to brush after meals. Unless the toothbrush is broken. Luckily, electric toothbrushes are relatively easy to fix and inexpensive to replace.

How Does It Work?

An electric toothbrush uses a small DC (direct current) motor to move the toothbrush shaft from side to side or back and forth, depending on the model. Most models are cordless, using a charger to replenish power. Less-expensive models operate on batteries.

Components inside an electric toothbrush charger typically are sealed from entry, so if it goes bad you must replace the entire unit.

What Can Go Wrong?

Problems usually involve either the brush heads, which are easily replaced if worn or faulty, or the charger. The power handle is typically sealed to prevent shock, so internal repairs should be left to a professional.

Who can repair your sealed electric toothbrush? Because they are small motorized electric appliances, nearly any small appliance repair shop can do it. Make sure you clean the unit well before delivering it to the repair person. Also be sure it's worth the cost of repairs. It might be more cost effective to just buy a new one.