When the rubber dam is removed, the abscesses enlarge (Fig.6), which may be related to sodium hypochlorite leakage.  A dental explorer is used to try to find a bony opening to the large PARL without success (Fig.7).  A postop PA reveals the leakage of Ca(OH)2 paste (Fig.8). 

Leak Last Next Xin Wei, DDS, PhD, MS 1st edition 09/06/2019, last revision 09/07/2019