Smear layer removal evaluation of different protocol of Bio Race file and XP- endo Finisher file in corporation with EDTA 17% and NaOCl

Abstract

BackgroundThe aim of the present study was to compare the amount of the smear layer remaining in prepared root canals with different protocols of Bio RaCe files and XP-endo Finisher file (XPF) in association with 17% EDTA and sodium hypochlorite solution.Material and MethodsA total of 68 extracted single-rooted teeth were randomly divided into 4 experimental groups (n=14) and two control groups (n=6). The root canals were prepared with Bio RaCe files (FKG Dentaire, Switzerland) using the crown-down technique based on manufacturer’s instructions and irrigated according to the following irrigation techniques: Group 1: XPF with 2 mL of 2.5% NaOCl for 1 minute. Group 2:, XPF with 1 mL of 17% EDTA for one minute. Group 3: XPF was used for 1 minute in association with normal saline solution. Group 4: XP-endo Finisher file for 30 seconds in association with 2.5% NaOCl and 17% EDTA for 30 seconds. The negative control group: NaOCl (2.5%) was used during root canal preparation, followed by irrigation with 17% EDTA at the end of root canal preparation. The positive control group: Normal saline solution was used for irrigation during root canal preparation. In all the groups, during preparation of the root canals with Bio RaCe file, 20 mL of 2.5% NaOCl was used for root canal irrigation and at the end of the procedural steps 20 mL of normal saline solution was used as a final irrigant. The samples were analyzed under SEM at ×1000‒2000 magnification and evaluated using Torabinejad scoring system. Data were analyzed with non-parametric Kruskal-Wallis test and post hoc Mann-Whitney U test, using SPSS. Statistical significant was defined at P<0.05.ResultsThe results of the study showed the least amount of the smear layer at coronal, middle and apical thirds of the root canals in groups 2, which was not significantly different from the negative control group (P<0.5).ConclusionsUnder the limitations of the present study, use of a combination of NaOCl and EDTA in association with XPF exhibited the best efficacy for the removal of the smear layer. Key words:Smear layer, XP-endo Finisher file, EDTA, Sodium hypochlorite.

Intracanal heating of sodium hypochlorite: Scanning electron microscope evaluation of root canal walls

“…SEM is commonly used for the identification of organic/inorganic debris and smear layer on the root canal walls after endodontic preparation, allowing to obtain detailed pictures with higher magnification imaging of the dentinal tubules. [ 28 29 ]…”

Instrumentação com XP- Finisher como potencializador da desinfecção do sistema de canais radiculares – revisão integrativa

“…As amostras foram analisadas pela MEV. O resultado do estudo mostrou uma maior eficácia na remoção do smear layer, quando houve associação do NaClO e do EDTA com o XPF (Zand, Mokhtari, Reyhani, Nahavandizadeh, & Azimi, 2017). Pereira (2017) realizou um estudo para avaliar a eficácia do XP-Endo Finisher na remoção da smear layer em canais radiculares comparando com diferentes protocolos de irrigação.…”

Efficacy of Chitosan as Final Irrigating Solution on TGF-β1 Release from Root Canal Dentin and its Effect on Dental Pulp Stem Cells Response

“…While 1% Chitosan solution was chosen owing to its ability to remove smear layer as EDTA, besides being antibacterial and biocompatible natural material (13,14) . In addition, the XP-Endo Finisher file has been used for activation of the final irrigants used because of its ability to enhance smear layer removal and disinfection properties of irrigating solutions (15)(16)(17)(18) .…”

“…The XP-Endo Finisher file has been innovated as an adjunctive tool to improve the efficiency of root canal irrigation. The ability of this MaxWire nickeltitanium rotary file to expand at body temperature and its tortuous motion have been demonstrated to have better smear layer removal (15,16) comparable to that of ultrasonic activation (17) , in addition to better irrigation penetration into dentinal tubules with increased disinfection potency (18) .…”