I want to reiterate that no one should ever ignore tooth or gum infection symptoms - but especially pregnant women! A woman I worked with once suffered a miscarriage that the ER doc thought might have been caused by her serious gum infection.
Note that I mentioned the ER doc. Yep, she did not have medical or dental insurance. If she had, instead of running a probably thousand-dollar-plus ER bill that she couldn't pay (meaning the rest of us pay) just to lose her baby, she could have seen a dentist, been prescribed pregnancy-safe antibiotics, and delivered a healthy baby.
In another terrible case I heard about, a young boy's mother could not find a Medicaid dentist to treat him. He developed a brain infection. Again, instead of a simple dental visit, he would up in the hospital and ran up a six-figure cost - and died. I don't know all the answers here, but it seems to me that we all need to do a better job of taking care of the most vulnerable among us - preferably "before" they reach a fatal crisis.