While this article fails to meet the promise of the title, there have been several promising studies using: Lasers: https://slate.com/business/2014/05/scientis

While this article fails to meet the promise of the title, there have been several promising studies using: Lasers: https://slate.com/business/2014/05/scientists-have-figured-out-how-to-regenerate-teeth-with-lasers.html https://slate.com/business/2014/05/scientists-have-figured-o... Sound: https://jtultrasound.biomedcentral.com/articles/10.1186/s40349-015-0028-5 https://jtultrasound.biomedcentral.com/articles/10.1186/s403... And others.