“…3 studies reported on implant-supported FPD(14,91,113). Of the combined human studies, 16 studies reported on vital RST(65, 73, 88, 89, 93-99, 102, 103, 108, 112, 116), 13 reported on endodontic treated roots(1,10,63,66,90,91,100,104,107,(109)(110)(111)(113)(114)(115), and 4 studies reported on both(14,101,105,106,117).…”