Canadian Politics Today

This assumes low-income children already weren't covered for free dental by provinces (who control health care under the constitution).  So what problem is this actually trying to solve?

https://www.ontario.ca/page/get-dental-care

https://www2.gov.bc.ca/assets/gov/british-columbians-our-governments/organizational-structure/ministries-organizations/social-development-poverty-reduction/healthy-kids.pdf

So is this a case where the NDP and Liberals may not have to pay hardly any money on this program while virtue signaling how they care about kids and how the CPC doesn't.

It doesn’t assume no dental coverage…. It covers kids who don’t have it already.  And it will cost about $0.7 billion.  So, that’s not really “hardly any money”.   Do you even bother to look into what you post about?