This title is a little bit misleading, because a large part of the solution is having a healthier and less sugary diet consistently for 4-8 years. If patients could do that, they likely wouldn't have cavities in the first place.

It does seem like there is a general movement away from drilling happening, though, which is good!

This approach looks more promising to me:

http://www.theguardian.com/society/2014/jun/16/fillings-dent...