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Now to our NBC News investigation and a look at a new trend in teeth straightening for much less than the cost of traditional braces, but some patients complain these at home treatments do not leave them smiling. Here's investigative and consumer correspondent Vicky Nguyen. This is on aligner. The ads promise to straighten your teeth for up to 60 percent less than braces in six months on average for under two grand. We didn't have to make any appointments. Get a scan in the store or a kit throug...
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