An In Vitro Comparison of Quantitative Dissolution of Human Pulp in Different Irrigating Solutions

Abstract

ABSTRACT Pulp tissue from freshly extracted, intact vital premolars was removed in toto and was cut to get an approximate weight of 8.2 mg for each sample. Eighty samples thus obtained were divided into 4 groups of 20 samples each according to the irrigating solution used (5.25% NaOCl, 17% EDTA, BioPure MTAD and Distilled water (control group). Pulp tissue of specified equal weight (8.2 mg) was placed into each test tube of all groups carrying irrigants of measured volume (5ml each) at 37°C according to their specified subgroups time interval i.e. 10 min, 15 min, 20 min and 30 min respectively. The solution from each sample test tube was filtered and was left for overnight drying. The residual weight was calculated by filtration method. Results showed that the maximum amount of pulp was dissolved by 5.25% NaOCl at all time intervals. MTAD and 17% EDTA showed almost similar dissolution at all the time intervals.