title: Shaping ability of three ProFile rotary instrumentation techniques in simulated resin root canals.
abstract: The aim of this study was to compare the shaping ability of three ProFile rotary instrumentation techniques and a conventional step-back method in simulated root canals. Prevalence of canal aberrations, change in working length, and preparation time were measured. A total of 48 composite images were made from pre- and postcanal scanned images using Corel Photopaint 8.0 and then the amount of coronal substance the instruments removed was also calculated two-dimensionally on digitized images with the Brain C software to compare the enlarging efficiency. There were no significant differences between the three rotary groups in preparation time, change in working length, and the incidence of aberrations (p > 0.05). The amount of coronal substance the instruments removed in the ProFile .04 taper group was significantly smaller than the other three groups (p < 0.05).
authors.affiliation: Department of Endodontics, College of Dentistry, Yonsei University, Seoul, Korea.
authors.forename: K Y
authors.initials: KY
authors.lastname: Kum
authors.forename: L
authors.initials: L
authors.lastname: Spängberg
authors.forename: B Y
authors.initials: BY
authors.lastname: Cha
authors.forename: J
authors.initials: J
authors.lastname: Il-Young
authors.lastname: Msd
authors.forename: L
authors.initials: L
authors.lastname: Seung-Jong
authors.forename: L
authors.initials: L
authors.lastname: Chan-Young
mesh_terms: D002244:Carbon; D016009:Chi-Square Distribution; D004396:Coloring Agents; D003722:Dental Alloys; D003786:Dental Pulp Cavity / Q000033:anatomy & histology*; D004867:Equipment Design; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods; D015994:Incidence; D008422:Materials Testing; D008953:Models, Anatomic; D009532:Nickel; D015995:Prevalence; D011670:Pulpectomy / Q000295:instrumentation; D012117:Resins, Synthetic; D018915:Root Canal Preparation / Q000295:instrumentation* / Q000379:methods; D012399:Rotation; D012984:Software; D013193:Stainless Steel; D018709:Statistics, Nonparametric; D013499:Surface Properties; D013997:Time Factors; D014025:Titanium; D019228:Tooth Crown
chemical_list: D004396:Coloring Agents; D003722:Dental Alloys; D012117:Resins, Synthetic; C028433:chinese ink; C040654:titanium nickelide; D013193:Stainless Steel; D002244:Carbon; D009532:Nickel; D014025:Titanium