I posted the link in my official answer, which I revised.
<a rel="nofollow" target="_blank" href="
https://www.healthcare.gov/coverage/dental-coverage/">https://www.healthcare.gov/coverage/dental-cov...>
Dental is really about the insurer.
It specially says "No. Dental coverage is optional, even for children. So you don't need it to avoid the penalty for being uncovered."
