TY - JOUR
T1 - Self-adjusting file cleaning-shaping-irrigation system optimizes the filling of oval-shaped canals with thermoplasticized gutta-percha
AU - De-Deus, Gustavo
AU - Barino, Bianca
AU - Marins, Juliana
AU - Magalhães, Karen
AU - Thuanne, Erika
AU - Kfir, Anda
PY - 2012/6
Y1 - 2012/6
N2 - Introduction: 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). Methods: 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. Results: 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). Conclusions: 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.
AB - Introduction: 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). Methods: 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. Results: 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). Conclusions: 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.
KW - ProTaper
KW - Self Adjusting File
KW - Thermafil
KW - root canal preparation
KW - root filling
UR - http://www.scopus.com/inward/record.url?scp=84861192016&partnerID=8YFLogxK
U2 - 10.1016/j.joen.2012.02.027
DO - 10.1016/j.joen.2012.02.027
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AN - SCOPUS:84861192016
SN - 0099-2399
VL - 38
SP - 846
EP - 849
JO - Journal of Endodontics
JF - Journal of Endodontics
IS - 6
ER -