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After repeated debridement with #40 hand file at 23 mm, apply Endo Sequence BioCeramic Sealer and insert GT 40/.08 master cone with black carrier (Fig.6). One hour later, the patient returns with re-appearance of the fistula (Fig.7). Following local anesthesia, poking the fistula leads to sealer escape (Fig.8). After debridement of the fistula until the bone, PA is retaken (Fig.9). A crown was made in China; mesial radiolucency starts (Fig.10). The tooth remains asymptomatic 1 year 5 months postop (Fig.11).
Xin Wei, DDS, PhD, MS 1st edition 08/13/2019, last revision 06/09/2020