There is also a credit plan called Care Credit that finances dental/some medical care. It works like a credit card in that it pays the bill upfront for dental and some medical bills (dental, eye, hearing, veterinary, ...) and then you pay it back in installments, during a set time period/schedule that you set in conjunction with their plans, then there are no interest fees. If over the time schedule, there will be interest fees.

http://www.carecredit.com/

Not all providers accept Care Credit, so find out first to see if this could be of benefit. This could be helpful for dental and some medical bills for y'all if so, instead of going straight interest bearing credit, or if the offices don't work out payment plans and then can't get treatment because of it.
Hope this helps.