Removing Root Canal Obturation Materials

Removal of root filling materials

“…Other studies have recommended the use of orange oil (30, 33, 34). However, although orange oil was found to be effective (30, 33), its action was slower than that of chloroform (34).…”

“…Other studies have recommended the use of orange oil (30, 33, 34). However, although orange oil was found to be effective (30, 33), its action was slower than that of chloroform (34). Halothane has also been advocated (31); it was found to dissolve gutta‐percha effectively, taking the same amount of time and resulting in canals as clean as those following the use of chloroform (31).…”

“…This is due to the increased effectiveness and improved speed of removal of gutta‐percha offered by rotary techniques (9, 41). Different rotary NiTi systems have been evaluated, including ProFile (Dentsply Maillefer, Ballaigues, Switzerland) (9, 41, 45, 46, 62–64), Quantec (SybronEndo, Orange, CA, USA) (41), System GT (Dentsply Maillefer, Ballaigues, Switzerland) (29), RaCe (FKG Dentaire, La Chaux‐de‐Fonds, Switzerland) (39, 65), Hero SHAPER (Micro‐Mega, Besançon, France) (62), K3 (SybronEndo, Orange, CA, USA) (47, 59, 62), ProTaper (Dentsply Maillefer, Ballaigues, Switzerland) (29, 48, 59, 62, 65), Mtwo (VDW, Münich, Germany) (66), EndoSequence (Brasseler, Savannah, Georgia, USA) (34), and Liberator (Miltex, York, PA, USA) (21). Rotary file systems designed specifically for re‐treatment have also been evaluated; these include ProTaper Universal (Dentsply Maillefer, Ballaigues, Switzerland) (44, 64, 67) and R‐Endo (Micro‐Mega, Bescançon, France) (48, 66, 68).…”

Removal of Gutta-Percha/Zinc-Oxide-Eugenol Sealer or Gutta-Percha/Epoxy Resin Sealer from Severely Curved Canals: An In Vitro Study

“…Elimination of these etiologies is essential to reestablish an environment conducive to repairing and healing. This implies that if nonsurgical revision is the treatment of choice then not only must these etiologic factors be removed, but also the filling material present in the root canal system must be eliminated [2, 3]. The literature is replete with studies that have discussed the techniques for removal of the causative factors for persistent periapical disease [1, 4].…”

“…The manufacturers claim that these systems, in addition to shaping and finishing the root canal, are also effective in the removal of the root filling material from root canals. Both systems have been evaluated as to their ability to remove the previous root filling materials and retained debris from canals systems, with neither system demonstrating 100% effectiveness [3, 8–11]. …”