590406.fig.002a
(a)
590406.fig.002b
(b)
590406.fig.002c
(c)
590406.fig.002d
(d)
Figure 2: (a) Preoperative radiograph of the maxillary right second molar. (b) Access cavity revealing four distinct orifices. (c) Radiograph showing the working length of all four roots. (d) Postoperative radiograph of the obturated maxillary second molar.