LEE _ He didn't actually give me a definitive answer, only he doesn't endorse the product or know how to use the product but said the best & most effective way to straighten teeth is with actual braces, but he did have a colleague in the practice who was trained with that product & I could freely go to him if I wanted. He didn't say the product was good, bad or otherwise, just that it wasn't his 'field' basically. So I'm none the wiser as well, but Janie had steered me clear anyway