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Fracture susceptibility of endodontically treated teeth
Author(s) -
Zamin Caroline,
SilvaSousa Yara Terezinha Correa,
SouzaGabriel Aline Evangelista,
Messias Danielle Furtado,
SousaNeto Manoel Damião
Publication year - 2012
Publication title -
dental traumatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.82
H-Index - 81
eISSN - 1600-9657
pISSN - 1600-4469
DOI - 10.1111/j.1600-9657.2011.01087.x
Subject(s) - dentistry , root canal , significant difference , universal testing machine , gutta percha , fracture (geology) , materials science , orthodontics , medicine , composite material , ultimate tensile strength
– Aim: To assess the influence of cervical preparation on fracture susceptibility of roots. Material and methods: During root canal instrumentation, the cervical portions were prepared with different taper instruments: I: no cervical preparation; II: #30/.08; III: #30/.10; IV: #70/.12. The specimens were sealed with the following filling materials ( n = 8), A: unfilled; B: Endofill/gutta‐percha; C: AH Plus/gutta‐percha; D: Epiphany SE/Resilon. For the fracture resistance test, a universal testing machine was used at 1 mm per minute. Results: anova demonstrated difference ( P < 0.05) between taper instruments with a higher value for group I (205.3 ± 77.5 N) followed by II (185.2 ± 70.8 N), III (164.8 ± 48.9 N), and IV (156.7 ± 41.4 N). There was no difference ( P > 0.05) between filling materials A (189.1 ± 66.3 N), B (186.3 ± 61.0 N), C (159.7 ± 69.9 N), and D (176.9 ± 55.2 N). Conclusions: Greater cervical wear using a #70/.12 file increased the root fracture susceptibility, and the tested filling materials were not able to restore resistance.