14,牙周牙髓联合病变Periodontal-EndodonticCombinedLesions,14-1牙周组织和牙髓的解剖通道AnatomicalInterrelationsofPeridontiumandPulp,根尖孔Apicalforamen,根管侧支Lateralrootcanal或副根管Accessorycanal,根尖1/3处最多根分叉区20-60%有,Thepulpwasnon-vitalandthetoothwasendodonticallytreated.Afterprosthetictherapy,Thepulpwasnon-vitalandthetoothwasendodonticallytreated.Afterprosthetictherapy(c),the2-yearfollow-upradiographin(d)showsbonefillinthepreviousangularbonydefect,whereasthemarginalboneremainsatthesamelevel.Oncarefulexaminationonecanseetha
