Comparison of the resistance of teeth instrumented with different nickel-titanium systems to vertical root fracture : an in vitro study
Yükleniyor...
Dosyalar
Tarih
2015
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier Science Inc
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Introduction: This study compared the fracture resistance of teeth instrumented with Pro Taper Universal (Dentsply Maillefer, Ballaigues, Switzerland), Pro Taper Next (PIN, Dentsply Maillefer), Wave One (Dentsply Maillefer), Twisted File (SybronEndo, Orange, CA), Mtwo (MT; VDW, Munchen, Germany), and Revo-S (MicroMega, Besancon, France) nickel-titanium systems and obturated with compatible gutta-percha cones of finishing files using the single-cone technique and a resin sealer. Methods: The study included 72 mandibular premolar teeth. The roots were covered with additive silicone and placed in Eppendorf tubes, which were filled with a self-curing acrylic. The tubes were separated into 6 groups: prepared with the Pro Taper Universal (F4 40/.06) (group 1), prepared with the PTN (X4 401.06) (group 2), prepared with the Wave One reciprocating file (40/.08) (group 3), prepared with the Twisted File (40/.04) (group 4), prepared with the MT (40/.06) (group 5), and prepared with the Revo-S (AS 40/.06) (group 6). After the preparations were completed, all the teeth were filled with the appropriate gutta-percha systems. The force (N) was applied at a 1-mm/min crosshead speed until the roots fractured. Differences among the groups were analyzed by Tukey and analysis. of variance tests. Results: Group 2 was the most resistant to fracture, and group 5 was the least resistant. The difference in the fracture resistance between the 2 groups was statistically significant (P = .019). The resistance of group 3 and group 6 to vertical root fracture was similar, and the resistance of group 4 was slightly lower than that of the other groups (P = .058). Conclusions: The roots instrumented with the MT were the least resistant, and the roots instrumented with the PTN were the most resistant to VRF.
Açıklama
Anahtar Kelimeler
Fracture Resistance, In Vitro Study, Nickel-Titanium Systems, Vertical Root Fracture
Kaynak
Journal Of Endodontics
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
41
Sayı
10
