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The effect of Resilon system on the fracture resistance of endodontically treated roots using two instrumentation techniques."An in vitro study" | ||
| Journal of baghdad college of dentistry | ||
| Article 1, Volume 23, Issue 4, 2011, Pages 42-45 | ||
| Authors | ||
| Majida K. Al-Hashimi; Sinan A. Shwailiya | ||
| Abstract | ||
| ABSTRACTBackground: Vertical Root Fracture (VRF) is one of the most common problems facing endodontically treated teeth.The greatest incidence of VRF occurs in teeth that have undergone endodontic therapy. The aim of this study was toevaluate the fracture resistance of endodontically treated roots using two instrumentation techniques either rotarywith ProTaper system or hand instrumentation with k-files and obturated with different obturation techniques: Guttaperchawith ZOE. sealer, Gutta-percha with AH-26 sealer or Resilon cones with Real-Seal sealer.Materials and Methodology: Ninety root samples were sectioned, from natural mandibular premolar teeth freshlyextracted for various reasons and stored in sterile water, to a length of 14 mm, then the samples were randomlydivided into 9 groups with ten roots for each group. Group I: Uninstrumented-unfilled roots, (control group) Group II:Hand instrumentation-GP+Z.O.E. sealer obturation. Group III: Hand instrumentation-GP+AH-26 sealer. Group IV: Handinstrumentation-Resilon+Real-Seal sealer. Group V: Hand instrumentation-No obturation. Group VI: Rotaryinstrumentation-GP+Z.O.E. sealer. Group VII: Rotary instrumentation-GP+AH-26 sealer. Group VIII: Rotaryinstrumentation-Resilon+Real-Seal sealer. Group IX: Rotary instrumentation-No obturation. The samples wereincubated in 37 c and 100% humidity for 7 days, and then they were subjected to the mechanical test in a universaltesting machine and the maximum load at the fracture point for each sample was recorded.Results: Descriptive statistics showed higher means of fracture loads for Resilon groups and student t-test showed asignificant difference between Resilon group over other experimental groups for rotary instrumented roots, for handinstrumented roots there was no significant difference between different obturation techniques. Rotary ProTaperinstrumented roots were significantly less than hand instrumented roots in resistance to fracture.Conclusion: Rotary instrumentation with ProTaper instruments significantly decreased fracture resistance of teeth andResilon system significantly increased resistance to fracture more than other obturation materials used in this study.Key words: Resilon, ProTaper, Fracture resistance, Vertical root fracture. (J Bagh Coll Dentistry 2011;23(4):42-45). | ||
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