title: Effects of Different Rotary Files Combined with Different Irrigation Needles on Apically Extruded Debris.
abstract: The aim of this study was to compare the apically extruded debris associated with ProTaper Next and OneShape Apical files using two different irrigation needles, open-ended and closed-ended (Max-I-Probe). Forty-eight mandibular premolars were assigned to four groups (n=12) as follows: Group PTN-SN: Root canal was prepared with ProTaper Next (PTN) and irrigated with open-ended standard needle; Group PTN-MP: Root canal was prepared with PTN and irrigated with Max-I-Probe; Group OSA-SN: Root canal was prepared with OneShape Apical (OSA) and irrigated with open-ended needle; Group OSA-MP: Root canal was prepared with OSA and irrigated with Max-I-Probe. Debris extruded during instrumentation was collected into pre-weighed Eppendorf tubes. After storage in an incubator at 70 °C for 5 days, the Eppendorf tubes were weighed to obtain the final weight with extruded debris. The difference between pre-and post-debris weights was calculated and statistical analysis was performed using Kruskal-Wallis and Mann-Whitney U tests (p<0.05). No statistically significant difference was observed between files and needles regarding amount of apically extruded debris (p>0.05). OneShape Apical and ProTaper Next resulted in extrusion of debris beyond the apical foramen, regardless of needle tip.
authors: Department of Endodontics, Faculty of Dentistry, Hacettepe University, Ankara, TR.
authors: Emel
authors: E
authors: Uzunoglu
authors: Department of Endodontics, Faculty of Dentistry, Bülent Ecevit University, Zonguldak, TR.
authors: Sevinc Aktemur
authors: SA
authors: Turker
authors: Department of Endodontics, Faculty of Dentistry, Hacettepe University, Ankara, TR.
authors: Melahat
authors: M
authors: Görduysus
mesh_terms: D003762:Dental Instruments; D006801:Humans; D009339:Needles; D007507:Therapeutic Irrigation