My name is Rosalie Tews. I'm 19 and I live in Cornwall, Ontario.

I have a beef. I purchased a Crest SpinBrush. When I took it home I realized it doesn't spin at all. It only LOOKS like it spins. Isn't this false advertising?

Street Cents checked out the Crest SpinBrush and found out it's not a case of false advertising.

Street Cents did a little test. We coloured one of the bristles with a marker and turned it on. But, it's true, it doesn't spin. Instead it just moves back and forth.

Proctor and Gamble, the company who makes the Crest SpinBrush, says the name isn't intended to make an exact technical description. And, advertising law allows for a little exaggeration. So, they're off the hook for this one. But, Street Cents still found some problems with the brush.

For instance, pressing too hard on the teeth with the SpinBrush can lead to gum recession and can wear away the tooth enamel. Ouch!

It's also a pricey little gimmick. Street Cents thinks $9.99 is a lot of money to pay for a toothbrush that does the same thing as a regular toothbrush, for about triple the cost.

Street Cents spoke to a dentist at the Faculty of Dentistry at Dalhousie University in Halifax. He says, spinbrushes, like the Crest SpinBrush, are no better than manual brushes.

Pressing too hard on the teeth can cause gum recession and wear away tooth enamel. The moving rounded bristles on the Crest SpinBrush fit nicely into the gum line and can help remove plaque. But, there's a risk that people will press too hard with this kind of brush. When teeth are brushed manually with a regular brush, there's more control over the amount of pressure put on the teeth and gums.

Crest website says "the SpinBrush is designed to allow you to brush as you would with any other toothbrush." But, the dentist Street Cents spoke to disagrees.

Street Cents spoke to a dentist at the Faculty of Dentistry at Dalhousie University in Halifax. He says, if you use a spinbrush like a regular brush (back and forth) you'll miss too many spots. Instead, he recommends gently placing the battery operated toothbrush on each tooth at the gumline. Roll it slowly over the tooth following the gumline. Do that for each tooth, inside and outside and on the top and bottom.

Just after Street Cents finished taping the Crest SpinBrush report, Crest began making replacement heads. To find out more about these replacement heads go to Crest's website. Replacement heads can be found at most drug stores and department stores in Canada.