Fig. 4From: Sonic-assisted antibacterial photodynamic therapy: a strategy for enhancing lateral canal disinfectionRepresentative images of the SEM examination after different treatments. (a) Untreated group; (b) NS; (c) Sonic-assisted MB-aPDT; (d) 3% NaOCl + MB-aPDT; (e) 3% NaOCl + sonic-assisted MB-aPDT; (f) 5.25% NaOClBack to article page