PMC4372793_01
Preoperative radiographs: A) periapical; B)  tracing with gutta-percha and C) occlusal view
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F1
An occlusal radiography confirmed the extremely large diameter of the lesion (Figure 1).
PMC4372793_02
PMC4372793_03
Post treatment radiographs: A) immediately after CH therapy; B) one week later (CH washing out) and C) CH replacement
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F2
One week later, the intracanal medicament had washed away (Figure 2) and the sinus tract was still present. Tokyo, Japan). Two weeks later the patient came up with purulent sinus tract; the tooth was still mobile and periapical radiography revealed the presence of the intracanal medicament in canal as well as the lesion (Figure 2).
PMC4372793_04
PMC4372793_05
follow-up radiographs: A) immediately after surgery and B) One year later
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F3
One year later the patient accidentally appeared in the clinic and follow-up radiography was taken (Figure 3).
PMC4372793_06
follow-up radiographs: A) immediately after surgery and B) One year later
iej-10-148-g003.jpg
PMC4372793_06_iej-10-148-g003.jpg
F3
One year later the patient accidentally appeared in the clinic and follow-up radiography was taken (Figure 3).