Management of the complex anatomy of lower premolars

First case: lower second premolar, patient came to the clinic suffering from pain on biting, pre op x-ray showing caires extend to the pulp and abnormal anatomy from the middle part of root. After determining the W.L time for negotiation for lateral canals and take the M.C Final x-ray modified WVC for obturation and to get seal for lateral canal. Second case: pre op x-ray showed abnormal shape of the apex for lower second premolar and the canal go lateral which means the apical delta. After checking the W.L one more time file go lateral, and I failed to reach the other portal , so I depend on the irrigation protocol obturation done by modified WVC. 3rd case: PreOp x-ray…