Comparative evaluation of apically extruded debris during root canal instrumentation using Neoendo Flex, Pro-HS, and Mani Silk: An in vitro study

Abstract

Background: Biomechanical preparation of the root canal system is one of the most crucial steps of endodontic treatment. Intracanal debris is invariably extruded during biomechanical preparation which causes inflammation of periradicular tissues leading to flare-up. Aim: The aim of the study is to evaluate and compare the amount of apical extrusion of debris using Neoendo Flex, Pro-HS, and Mani Silk rotary files during root canal preparation. Materials and Methods: Sixty premolars with straight, single root canals were selected for the study. After access opening and working length determination, the samples were randomly divided into four groups according to file system used for root canal preparation: Group I – Neoendo Flex (n = 15), Group II – Pro-HS (n = 15), Group III – Mani Silk (n = 15), and Group IV – No instrumentation (n = 15). The debris collected after biomechanical preparation was quantitatively determined using a precision balance. The data obtained were statistically analyzed using ANOVA and post hoc Dunnett's test. Results: Minimum debris extrusion was seen with Neoendo Flex files and maximum debris extrusion was seen with Pro-HS files but the difference was not statistically significant (P > 0.05). Conclusions: Within the limitations of our in vitro study, it can be concluded that all Nickel– Titanium (NiTi) file systems studied caused apical extrusion of debris. Neoendo flex extruded least amount of debris apically compared to Mani Silk and Pro-HS files. Design features of a file primarily influence the amount of extruded debris.

Keywords

• apical debris extrusion
• flare up
• mani silk
• neoendo flex
• pro-hs