The perfect scenario. This is a complex C-shaped root canal system with a lot of anatomy that files wouldn’t touch. Irrigation is probably more important in this case type than most. Length control is critical because the apical construction is far from the radiographic apex. It is in fact divergent if you are only using a PA for length determination, and it happens to be right over the Inferior alveolar nerve. This makes for a risky situation for positive pressure irrigation and obturation. In this situation negative pressure irrigation is the way to go. In the past, I would have treated this case with endovac, but would have created apical shape to fit the microcannula, risking loss of the apical construction, potentially leaving a more divergent apex over the IAN. In this case I was able to keep the files far short of the apex and allowed the GW to thoroughly clean out the entire system, then comfortably obturated to the natural apical construction

October 22nd, 2019 | By admin | | Comments Off on The perfect scenario. This is a complex C-shaped root canal system with a lot of anatomy that files wouldn’t touch. Irrigation is probably more important in this case type than most. Length control is critical because the apical construction is far from the radiographic apex. It is in fact divergent if you are only using a PA for length determination, and it happens to be right over the Inferior alveolar nerve. This makes for a risky situation for positive pressure irrigation and obturation. In this situation negative pressure irrigation is the way to go. In the past, I would have treated this case with endovac, but would have created apical shape to fit the microcannula, risking loss of the apical construction, potentially leaving a more divergent apex over the IAN. In this case I was able to keep the files far short of the apex and allowed the GW to thoroughly clean out the entire system, then comfortably obturated to the natural apical construction