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  Indian J Med Microbiol
 

Figure 17: Packing an isthmus with radiopaque debris. The radiolucent space of a mesial root of a mandibular molar with two canals connected by an isthmus. (a) Before treatment. (b) After treatment with rotary fi les. Nice preparations, but the isthmus disappeared due to active packing of the isthmus with radiopaque dentin particles. (c) The volume of the isthmus that disappeared (white) due to packing with dentin particles (adapted from Paque et al. 2009)[76]

Figure 17: Packing an isthmus with radiopaque debris. The radiolucent space of a mesial root of a mandibular molar with two canals connected by an isthmus. (a) Before treatment. (b) After treatment with rotary fi les. Nice preparations, but the isthmus disappeared due to active packing of the isthmus with radiopaque dentin particles. (c) The volume of the isthmus that disappeared (white) due to packing with dentin particles (adapted from Paque <i>et al</i>. 2009)<sup>[76]</sup>