The effectiveness of four clinical irrigation methods on the removal of root canal debris
Residual pulpal tissue, bacteria, and dentin debris may persist in the irregularities of root canal walls, even after careful mechanical preparation.•1 3 A num ber of irrigants are used in conjunction with canal instrumentation. In comparing these irrigants in terms of their disinfecting and cleaning qualities, there are two schools of thought. In one a great emphasis is placed on the chemical properties of an irrigant such as sodium hypochlorite, whereas in the other the overriding consideration is the mechanical action of the solution as a flushing agent. Some studies, in fact, have concluded that the flushing action is more important than the type of irrigant and that cleansing is a function of the quantity rather than the type of irrigant
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