The word has been rumbling around for a few years that soon technology would be able to grow teeth. Generally it was assumed or discussed as coming from biotechnology, and that's on the way too at some point. But there is something coming out sooner than that, in fact a device that can grow teeth has already been approved. Some Canadian researchers have developed a device that uses ultrasound to grow teeth and bones :

Snaggle-toothed hockey players and sugar lovers may soon rejoice as Canadian scientists said they have created the first device able to re-grow teeth and bones.

The researchers at the University of Alberta in Edmonton filed patents earlier this month in the United States for the tool based on low-intensity pulsed ultrasound technology after testing it on a dozen dental patients in Canada.

"Right now, we plan to use it to fix fractured or diseased teeth, as well as asymmetric jawbones, but it may also help hockey players or children who had their tooth knocked out," Jie Chen, an engineering professor and nano-circuit design expert, told AFP.

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With the help of Chen and Ying Tsui, another engineering professor, the initial massive handheld device was shrunk to fit inside a person's mouth.

It is still at the prototype stage, but the trio expects to commercialize it within two years, Chen said.

The bigger version has already received approvals from American and Canadian regulatory bodies, he noted.

So the future is here now, if in a limited sense for now.  In a few short years we should see widely availabe treatments that can for the first time ever actually reverse tooth damage and grow deformed or damaged bone to fix a range of problems.  Amazing stuff.