Figure 1.
A classical sodium hypochlorite accident showing the time course of facial involvement from onset to resolution. A. Immediately after removal of rubber dam. Ecchymosis visible along corner of the mouth (arrow) and lower eye lid (open arrowhead). No facial oedema. B. Three hours after onset of the accident. C. After 24 hours. Swelling resulted in the disappearance of the nasolabial fold (open arrow) and Marionette lines (open arrowhead)) on the right side of her face. D. After 48 hours. E. After 4 days. F. A 3 weeks.