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Fracture resistance of roots using different canal filling systems
Author(s) -
Karapinar Kazandag M.,
Sunay H.,
Tanalp J.,
Bayirli G.
Publication year - 2009
Publication title -
international endodontic journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.988
H-Index - 119
eISSN - 1365-2591
pISSN - 0143-2885
DOI - 10.1111/j.1365-2591.2009.01571.x
Subject(s) - fracture (geology) , resistance (ecology) , materials science , root canal , forensic engineering , geotechnical engineering , dentistry , geology , composite material , engineering , medicine , biology , agronomy
Aim To evaluate the fracture resistance of teeth filled with various canal filling materials. Methodology The crowns of 100 single‐rooted teeth were removed leaving 12 mm of the roots. The canals were shaped using Endo‐Sequence files. Following instrumentation, 80 teeth were divided into four groups. The remaining 20 teeth were divided into two groups. The teeth in each group were filled as follows: Group 1: AH‐Plus + Gutta‐percha (Cold lateral compaction), Group 2: Resilon + Epiphany (Cold lateral compaction), Group 3: ActiV GP cone + ActiV GP sealer, Group 4: ActiV GP sealer + Gutta‐percha (Cold lateral compaction), Group 5: No instrumentation or filling, Group 6: Instrumentation but no filling. After the sealers had set, the roots were embedded in acrylic moulds and subjected to a compressive loading at a rate of 1 mm min −1 . The load at which fracture occurred was recorded and statistically analysed using Kruskal–Wallis one‐way analysis of variance and Z ‐tests. Results The fracture values of the experimental teeth were significantly higher than those of the instrumented but unfilled group ( P < 0.05). Teeth in the AH‐Plus + lateral compaction group had higher fracture resistance compared with the ActiV GP sealer + Gutta‐percha group ( P < 0.05). Conclusions Systems aiming to obtain a monoblock system were not superior to the conventional AH‐Plus + Gutta‐percha technique in terms of fracture resistance. The fracture resistance of roots using ActiV GP + lateral compaction Gutta‐percha was significantly reduced compared with the AH‐Plus + Gutta‐percha group.