# Sodium hypochlorite irrigation depends upon:
1. pH
2. Temperature
3. Volume
4. Concentration
A. 1 and 2
B. 2 and 3
C. 1 and 3
D. 2 and 4
The correct answer is: D. 2 and 4 (Temperature and Concentration)
Explanation:
The effectiveness of sodium hypochlorite (NaOCl) irrigation in endodontics depends significantly on:
Temperature: Increasing the temperature of sodium hypochlorite enhances its tissue-dissolving ability and antibacterial efficacy.
Concentration: Higher concentrations of sodium hypochlorite are more effective in tissue dissolution and microbial elimination. However, they can also increase the risk of cytotoxicity and irritation.
While pH and volume affect sodium hypochlorite's properties, they are not the primary factors affecting its irrigation efficacy.
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