Ultrasound to help regrow teeth?

The July edition of New Scientist contains a story about Canadian research into the use of an "ultrasound transmitter that fits neatly inside a person's mouth like a brace and could help to regrow damaged teeth".

The article notes that "Jie Chen and Ying Tsui, engineers at the University of Alberta in Canada, developed the miniature device after ultrasound stimulation encouraged damaged teeth and jawbone tissue to regrow in animals".