Shaping ability of three ProFile rotary instrumentation techniques in simulated resin root canals.
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).
Kum
K Y
KY
Department of Endodontics, College of Dentistry, Yonsei University, Seoul, Korea.
Spängberg
L
L
Cha
B Y
BY
Il-Young
J
J
Msd
Seung-Jong
L
L
Chan-Young
L
L
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
D004396:Coloring Agents; D003722:Dental Alloys; D012117:Resins, Synthetic; C028433:chinese ink; C040654:titanium nickelide; D013193:Stainless Steel; D002244:Carbon; D009532:Nickel; D014025:Titanium