Comparison of the Effects of Various Irrigating Solutions on Dentine Permeability

This study evaluated the penetrating and cleansing effect of 7 irrigation solutions or combinations of solutions. Fifty-six extracted teeth were divided into 7 groups and irrigated during instrumentation with the various solutions. The teeth were then filled with a warm radioactive 125I gel. The percentage of reduction of radioactivity caused by continued saline irrigation, drying and reinstrumentation was determined for each group. Further irrigation and drying versus additional instrumentation with larger instruments was also evaluated. How the reduction related to the original irrigation solution was statistically analyzed. The original irrigation solution did not appear to be a highly significant factor. (Author)