Higher Speed and No Glide Path: A New Protocol to Increase the Efficiency of XP Shaper in Curved Canals—An In Vitro Study
| Autor: | Avacir Casanova Andrello, Katharina A. Azim, Paulo José dos Reis, Adham A. Azim, Lucila Piasecki, Eduardo Inocente Jussiani, Mariel Webber |
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| Rok vydání: | 2020 |
| Předmět: |
0301 basic medicine
Protocol (science) Path (computing) Micro computed tomography Equipment Design 030206 dentistry In Vitro Techniques Molar 03 medical and health sciences 030104 developmental biology 0302 clinical medicine Operating time In vitro study Rotary instrumentation Dental Pulp Cavity Gutta-Percha General Dentistry Root Canal Preparation Simulation Mathematics |
| Zdroj: | Journal of Endodontics. 46:103-109 |
| ISSN: | 0099-2399 |
| DOI: | 10.1016/j.joen.2019.10.014 |
| Popis: | This in vitro study compared the performance of the XP-endo Shaper (XP; FKG, La Chaux-de-Fonds, Switzerland) in curved canals when used with a higher speed (3000 rpm) without a glide path with the manufacturer's protocol.Twenty extracted mandibular molars with separate mesial curved canals were matched to obtain 2 standardized groups (n = 20). For the XP 1000 group, a glide path up to a size 15 hand file was performed followed by rotary instrumentation with the XP shaper at 1000 rpm, following the manufacturer's recommendations. For the canals in the XP 3000 group, the file was rotated at 3000 rpm after only negotiation the canal with a size 8 hand file (patency file). The operating time and the number of strokes taken to reach the working length (WL) and fit a 30/.04 gutta-percha cone to the WL were recorded. The shaping abilities were evaluated by micro-computed tomographic imaging and file deformation by scanning electron microscopy. Data were analyzed using analysis of variance and chi-square tests at a 5% significance level.The XP 3000 group required less time and strokes to reach the WL (P.05) and resulted in a higher percentage of adequate cone fit (P.05). No difference was found between groups regarding the micro-CT parameters, except for the taper, which was larger in the XP 3000 group in the apical and middle thirds (P.05). No difference was found regarding file deformation between the 2 groups.The suggested protocol for the use of the XP (3000 rpm without a glide path) appears to be more efficient than the manufacturer's recommended protocol to prepare curved canals in vitro. |
| Databáze: | OpenAIRE |
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