Root Surface Strain And Cracks Development By Two Reciprocating Nickel Titanium Files | ||
| Egyptian Dental Journal | ||
| Article 1, Volume 66, Issue 4 - October (Conservative Dentistry and Endodontics), October 2020, Pages 2689-2694 PDF (503.91 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/edj.2020.29260.1118 | ||
| Authors | ||
| Tarek Elsewify* 1; Hisham Elhalaby2 | ||
| 1Endodontic Department, Faculty of Dentistry, Ain Shams University, Cairo, Egypt | ||
| 2Endodontic Department, Faculty of Dentistry, Assuit University, Assuit, Egypt | ||
| Abstract | ||
| Aim: The aim of this study was to determine root surface strain (RSS) developed by two reciprocating NiTi files and the resultant cracks. Materials and Methods: Thirty mesial roots of mandibular molars were used. Ten roots were prepared using AF Blue R3 Reciprocating One-File System (FBR) (Fanta; ShangHai, China) for the mesiobuccal canal and WaveOne Gold primary (WOG) (Dentsply Tulsa Dental; Tulsa, OK, USA) for the mesiolingual canal. Ten roots were prepared using WOG and ten roots using FBR. An electrical strain gauge was fixed on the root surface connected to a strain amplifier. Maximum strain and time were recorded. Roots were cut transversely to evaluate for cracks. Results: WOG has developed RSS of (84.16±52.57) and cracks (2/10); FBR has developed RSS of (128.33±128.55) and cracks (5/10) without statistically significant difference. Preparation time of WOG was (55.28±26.24) which was statistically significantly less than FBR (109±57.3). Conclusion: Both files have developed RSS and cracks during canal shaping. | ||
| Keywords | ||
| cracks; Fanta Blue R3; reciprocation; root surface strain; WaveOne Gold | ||
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