This study aimed to compare the filling ability of carrier-based thermoplasticized gutta-percha in flat-oval canals prepared using either rotary ProTaper files (Dentsply Maillefer, Ballaigues, Switzerland) or the Self-Adjusting File system (SAF) (ReDent-Nova, Ra'anana, Israel).
Thirteen pairs of mandibular incisors were selected from a random collection. The teeth in each pair had single root canals with a flat-oval cross-section and similar sizes and dimensions. Teeth from each pair were randomly assigned to 1 of 2 experimental groups. One group was instrumented using the ProTaper NiTi system, whereas the SAF system was used in the other. Root filling was performed with Thermafil obturators (Dentsply Tulsa Dental Products, Tulsa, OK), and teeth were sectioned at 6, 5, 4, and 3 mm from the apex; the cut surface was subjected to morphometric measurement to establish the percent gutta-percha–filled area (PGFA) for each section. The Wilcoxon matched-pairs signed rank test was used to assess the effect of the 2 preparation methods on the PGFA.
The median PGFA in the ProTaper group was 77.5%, whereas the median PGFA was 90.5% in the SAF group (P < .05). In the SAF-instrumented group, 17.8% of the specimens had a PGFA ≥95% compared with only 5.8% of the ProTaper-instrumented specimens (P < .05).
Instrumentation of the flat-oval canals with the SAF system led to a significantly higher PGFA compared with ProTaper instrumentation with syringe and needle irrigation.
To read this article in full you will need to make a payment
Purchase one-time access:Academic & Personal: 24 hour online accessCorporate R&D Professionals: 24 hour online access
One-time access price info
- For academic or personal research use, select 'Academic and Personal'
- For corporate R&D use, select 'Corporate R&D Professionals'
Subscribe:Subscribe to Journal of Endodontics
Already a print subscriber? Claim online access
Already an online subscriber? Sign in
Register: Create an account
Institutional Access: Sign in to ScienceDirect
- Comparison of three techniques for preparing oval-shaped canals.J Endod. 2010; 36: 532-535
- Suboptimal debridement quality produced by the single-file F2 ProTaper technique in oval-shaped canals.J Endod. 2010; 36: 1897-1900
- Effects of four Ni-Ti preparation techniques on root canal geometry assessed by micro computed tomography.Int Endod J. 2001; 34: 221-230
- ProTaper rotary root canal preparation: effects of canal anatomy on final shape analysed by micro CT.Int Endod J. 2003; 36: 86-92
- Effects of root canal preparation on apical geometry assessed by micro-computed tomography.J Endod. 2009; 35: 1056-1059
- Hard-tissue debris accumulation analysis by high-resolution computed tomography scans.J Endod. 2009; 35: 1044-1047
- Accumulated hard tissue debris levels in mesial roots of mandibular molars after sequential irrigation steps.Int Endod J. 2011; 44: 148-153
- Limited ability of three commonly used thermoplasticised gutta-percha techniques in filling oval-shaped canals.J Endod. 2008; 34: 1401-1405
- Ability of chemomechanical preparation with either rotary instruments or Self-Adjusting File to disinfect oval-shaped root canals.J Endod. 2010; 36: 1860-1865
- The self-adjusting file optimizes debridement quality in oval-shaped root canals.J Endod. 2011; 37: 701-705
- The self-adjusting file (SAF). Part 1: respecting the root canal anatomy—a new concept of endodontic files and its implementation.J Endod. 2010; 36: 679-690
- The self-adjusting-file (SAF). Part 2: mechanical analysis.J Endod. 2010; 36: 691-696
- The self-adjusting file (SAF). Part 3: removal of debris and smear layer—a scanning electron microscope study.J Endod. 2010; 36: 697-702
- A primary observation on the preparation and obturation of oval canals.Int Endod J. 2001; 34: 137-141
- The diagnostic reliability of the buccal radiograph after root canal filling.Int Endod J. 1987; 20: 20-24
- Preparation of oval-shaped root canals in mandibular molars using nickel-titanium rotary instruments: a micro-computed tomography study.J Endod. 2010; 36: 703-707
- Microbial status of apical root canal system of human mandibular first molars with primary apical periodontitis after “one-visit” endodontic treatment.Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2005; 99: 231-252
- The quality of root canal preparation and root canal obturation in canals treated with rotary versus Self Adjusting Files: a three-dimensional micro-computed tomographic study.J Endod. 2010; 36: 1569-1573
- Root canal preparation of maxillary molars with the Self-adjusting File: a micro-computed tomography study.J Endod. 2011; 37: 53-57
- Flat-oval root canal preparation with Self-Adjusting File instrument: a micro–computed tomography study.J Endod. 2011; 37: 1002-1007
- Micro-computed tomography evaluation of the preparation of long oval root canals in mandibular molars with the Self-Adjusting File.J Endod. 2011; 37: 517-521
- Hard tissue debris accumulation caused by conventional rotary versus self-adjusting file instrumentation in mesial root canal systems of mandibular molars.Int Endod J. 2012; (in press)
- A laboratory analysis of gutta-percha filled area obtained using thermafil, system B and lateral condensation.Int Endod J. 2006; 39: 378-383
Published online: April 19, 2012
© 2012 American Association of Endodontists. Published by Elsevier Inc. All rights reserved.