Purpose: To evaluate the different concentration, temperature, agitation on tissue dissolution. To compare NaOCl/surface active agent to the conventional one.
•Samples of bovine meat was used at fixed weight, shape and volume. •Three NaOCl solutions from two different manufacturers in concentrations of 1%, 2%, 4%, and 5.8%;
a. conventional regular 1,
b. conventional regular 2,
c. regular 2 with surface active agent (chlor-Xtra)
•Each concentration was tested under different temperatures (room temp. ,37oC,45oC)
•Different agitation protocols (sonic, ultrasonic, pipetting) was done for a variable duration (25%,50% or 100% of total 5 min).
•Contact angle was measured using extracted teeth after polishing the dentin with 1% and 5.8% NaOCl.
Most highlighted Results:
•Tissue dissolution has direct relationship with the concentration, temperature , agitation.
•Agitation had more effect in tissue dissolution than temperature.
•Continuous agitation had fastest tissue dissolution. No significant difference between 3 methods of agitation.
•NaOCl/active surface agent had the most effective tissue dissolution in all experimental conditions.
•Chlor-Xtra (5.8%) had the lowest contact angle of the three hypochlorite solutions.
Optimizing the concentration, temperature, flow, and surface tension can improve the tissue-dissolving effectiveness of Sodium hypochlorite.