Eficácia de substancias químicas auxiliares na instrumenta？？o de canais radiculares

by weighing human teeth, two auxiliary chemical methods in the instrumentation of root canals were compared as follows: endo ptc in alternation with 1% sodium hipochlorite followed by irrigation, aspiration with detergent/antisseptic solution (group a) and with 1% sodium hipochlorite alone (group b). our conclusions indicate that: 1) differences occured in two of the studied groups in three categories. 2) group a showed a greater difference of weight when compared to group b (p < 0.01). 3) group b required a minor time of instrumentation in relation to group a (p < 0.05). 4) relative to the difference of weight based on time unit, group a presented higher values when compared to group b (p < 0.05).