Right now CareCredit (GEMB) seems to be pretty generous.
And you can go interest free 3 to 18months depending on the amount.
I just had to do this for DW, who had some major dental. Got the 18 months interest free, plus got dentist to give a 10% discount on price. Plan to pay off much faster than 18, but nice to have the no cost option and let my savings build the interest.