Efficacy of two techniques for endodontic instrumentation.
The aim of the present study was to compare the quality of preparation in curved and straight root canals employing 2 techniques, i.e. the step-back technique and the technique of Goerig, Michelich and Schultz. One hundred and thirty single-rooted human teeth were employed throughout. The walls of the root canals of these teeth were painted. Following instrumentation the roots were sectioned longitudinally. The sections were observed under a stereoscopic microscope SZ40 with a grid fitted in the eyepiece. The efficacy of instrumentation was evaluated using area of paint removed as the end-point. Statistical significance of the data was tested with the chi square test employing the Epi Info 5 software. There was no statistically significant difference between techniques for straight canals. The technique of Goerig, Michelich and Schultz was more effective than the step-back technique in the apical third of curved canals.
Naigeboren
D
D
Faculty of Dentistry, National University of Tucumán, Argentina.
Bulacio
M A
MA
de la Casa
M L
ML
Leonardi
L
L
Costa
L
L
D016009:Chi-Square Distribution; D004396:Coloring Agents; D003786:Dental Pulp Cavity / Q000033:anatomy & histology; D004867:Equipment Design; D006801:Humans; D011672:Pulpotomy; D018915:Root Canal Preparation / Q000295:instrumentation / Q000379:methods*; D016896:Treatment Outcome
D004396:Coloring Agents