In Vitro Evaluation of the Cleansing Working Time and Analysis of the Amount of Gutta-Percha or Resilon Remnants in the Root Canal Walls after Instrumentation for Endodontic Retreatment

Micro-computed tomographic evaluation of removal and extrusion of root filling material during canal retreatment

“…The success in endodontic retreatment is dependent upon the efficient removal of filling material from the root canal walls (CUNHA et al, 2007;BARLETTA et al, 2008). Anatomical complexities can challenge root canal preparation due to the limitations on the appropriate adaptation of files in the canal (PEREIRA et al, 2012).…”

“…Several studies used distinct methods such as bidimensional radiographic analysis or destructive approaches sectioning specimens to evaluate the remaining filling after endodontic retreatment (BARRIESHI-NUSAR, 2002;CUNHA et al, 2007;BARLETTA et al, 2008). Recently, micro-computed tomography has been increasingly employed in endodontic investigations, since this non-invasive method provides high-resolution images with good detailing of the root canals and endodontic treatments/retreatments (HAMMAD, QUALTROUGH;SILIKAS, 2008;RÖDIG et al, 2012;CROZETA et al, 2016).…”

Root canal filling using Resilon: a review

“…Most studies have concluded that Resilon is readily removable using a variety of techniques. As with the sealability studies the results have been contradictory with some studies demonstrating the amount of residual debris to be less than that of gutta-percha root fillings, [137][138][139][140]142 while others have found the opposite. 141,145,148 The variation between these studies maybe attributable to Resilon/ Epiphany not completely setting before retreatment and therefore being easier …”

“…18,17,136 An advantage of Resilon is that it can be removed in a similar manner to gutta-percha (Table 4). [137][138][139][140][141][142][143][144][145][146][147][148][149][150] A series of studies have compared the removal of Resilon to guttapercha with the time taken for removal and residual material remaining the main variables investigated. Most studies have concluded that Resilon is readily removable using a variety of techniques.…”

Resilon: A Comprehensive Literature Review

“…110,111,116,120 But one study showed that there were no significant differences between gutta-percha and Resilon regarding the time needed for removal. 112,121 In relation to the instruments used for the removal of filling materials, it has been shown that rotary files with chloroform are more effective than rotary files with heat, 110 K3 than Liberator files, 111 Gates-Glidden than system B 116 and heat than K3. 122 There were no significant differences between Mtwo, Twisted files, Protaper and R-Endo 115 and Hedestrome files in terms of Resilon removal.…”