Abstract
In the present study, we examined the relations between the periapical condition and the periapical filling on vertical obturation technique. 275 root canals of 208 teeth were treated endodontically by three dentists. Tac-Endo Gutter and Canals-N were used for vertical root canal filling. Periapical radiographs were taken after root canal filling. The apical legion of the root canal filling were evaluated and classified into 5 types of radiolucent lesion according our criteria. The lesion size of each periapical radiograph was also measured. The lesion with small and clear radiolucency indicated the overfilling ratio more than other legion types (the large and clear radiolucency, and the large and unclear radiolucency). These results suggest that the periapical status, not the lesion size, may effect on the periapical filling status when we used the vertical obturation technique.
