Title: Cleaning ability and Apically Extruded Debris of Three Single file Rotary Nickel Titanium systems (an in vitro study)

Abstract

Background:The aim of this study was to evaluate three single rotary NiTi systems regarding their cleaning ability and the amount apically extruded debris. Methodology: A total of forty five extracted permanent mature lower anteriors were divided then instrumented in three groups (n = 15): Fanta AF F One file, OneShape file and OneCurve file. 2.5% Sodium hypochlorite was used as an irrigant. preweighets and postweights were recorded for apical extrusion. Teeth were longitudinally splited into two halves. Images were taken then analysed for debris percentage using J image software. Intergroup comparisons and intragroup comparisons were done using one-way ANOVA followed by Tukey's post hoc test. Results:The apical extrusion results showed that the highest mean value of apically extruded debris was found in Fanta AF F One group followed by OneCurve group, while the least value was found in OneShape group. Regarding the cleaning ability, none of the tested instrument showed complete cleaning of the canal walls. The three file systems showed better cleaning ability in the coronal and the middle while a less cleaning ability was in the apical thirds of the root canals. Fanta AF F One file showed better cleaning ability compared to Oneshape and OneCurve file systems. Conclusions: Under the conditions of this study, Fanta AF F One file produced more debris than the One Shape and OneCurve file systems. While it showed a better cleaning ability compared to the other file systems.

Comparative analysis of reciprocating and flat‐side heat‐treated rotary single‐file systems: Design, metallurgical characteristics, and mechanical performance

“…Previous research has compared the first launched AF F One single‐file NiTi rotary system (size 25, 0.06 taper; Fanta Dental Material Co.) that is made of a proprietary AF‐R wire technology to various rotary and reciprocating systems. These studies showed that AF F One instruments had lower cyclic fatigue resistance than 2Shape instrument after clinical usage (Ubaed & Bakr, 2022), produced more debris but better cleaning ability than One Shape and OneCurve systems (Mogahed et al, 2021), had better shaping ability than a prototype instrument in simulated canals (Di Nardo et al, 2020), were less effective than certain reciprocating systems in removing calcium silicate‐based sealer (Madarati et al, 2023) and in eliminating Enterococcus faecalis biofilm from infected root canals (Hamed et al, 2022), but showed improved resistance to flexural fatigue compared with a prototype instrument (Gambarini et al, 2019). These preliminary findings indicate that using flat design instruments instead of other market‐available options may not offer the advantages claimed by manufacturers, and further research is necessary to assess their mechanical performance.…”

To flat or not to flat? Exploring the impact of flat‐side design on rotary instruments using a comprehensive multimethod investigation

“…Furthermore, other studies have reported conflicting results regarding the performance of flat-side instruments. For instance, Ubaed and Bakr (2022) found that AF F-One exhibited lower cyclic fatigue resistance compared to 2Shape instruments after clinical usage, whilst Mogahed et al (2021) observed that AF F-One generated more debris but demonstrated superior cleaning ability compared to One Shape and OneCurve systems. Conversely, Di Nardo et al (2020) reported better shaping ability of flat-side instruments, and Gambarini et al (2019) demonstrated improved resistance to flexural fatigue in comparison to nonflat-side prototype counterparts.…”