Endodontic Challenge – elbow curvature

Challenged Elbow Curvature
Mostly in lower molars The Canal Of Distal Root Open At The Side .
Very difficult case 25 mm length , very tight canals , needs two visits to reach the apex , 25 % 0.4 for all , the irrigation done by naocl 5.25 , EDTA 17% , and obturated by single cone with BC sealer,