title: Dentin removal efficiency of six endodontic systems: a quantitative comparison.
abstract: The dentin removal efficiency of current endodontic systems, based on the amount of dentin removed in 1 mm of canal axial length, was determined for working times of 1 and 2 min. Six endodontic systems were compared: The Giromatic with Heli-Giro files, the Sonic-Air with Shapers, the Mecasonic with Shapers, the Cavi-Med with K files, the Cavi-Med with Shapers, the Excalibur with its own K files. Generally speaking, the efficiency of each device depends on the duration of instrumentation, on the type of file used, and on its mode of activation. For 1 min of instrumentation, the Mecasonic+Shaper was the most efficient system. For 2 min of instrumentation, the original adaptation of the Shaper on the Cavi-Med gave the highest activity. Concerning the files used in ultrasonics, the Shaper seems to be more efficient than the K file. As for the sonics, the Excalibur+file system gave results comparable to those of the Mecasonic+Shaper; both of these devices were twice as efficient as the Sonic-Air+Shaper.
authors.affiliation: Department of Restorative Dentistry and Endodontics, Faculty of Dentistry, Université d'Auvergne, Clermont Ferrand, France.
authors.forename: M
authors.initials: M
authors.lastname: Hennequin
authors.forename: J F
authors.initials: JF
authors.lastname: Andre
authors.forename: G
authors.initials: G
authors.lastname: Botta
mesh_terms: D003737:Dental Cavity Preparation / Q000295:instrumentation*; D003804:Dentin / Q000601:surgery*; D006801:Humans; D007180:Incisor / Q000601:surgery; D012390:Root Canal Therapy / Q000295:instrumentation*; D013010:Sonication; D014464:Ultrasonic Therapy / Q000295:instrumentation