Need to have teeth out befor, I can

Peter has to have a liver transplant. He is on the liver transplant list in Boston Mass. He needs to have all his infected teeth out be for they will do transplant. We have dental insurance that only covers 60%. Our medical insurance BCBC isn't helping much at all. The oral surgeon wants $2800.00 up front that we just don't have. Please any help would be appreciated. Thank You in advance.