Objective:To evaluate the quality of hot gutta-percha root canal filling in the mandibular molar in the elderly by cone-beam CT.Methods:Eighty molars with 253 root canals in 51 geriatric patients from June 2015 to August 2016 in the Stomatology Hospital of Dalian were selected.Before the operation,the molars were scanned with cone-beam CT.The root canals were filled with hot gutta-percha and vertical pressurized.The quality of root canal filling were evaluated by cone-beam CT and digital images.Results:The ...