Análise de superfície de dois instrumentos endodônticos para limpeza do canal radicular: comparação por microscópio eletrônico de varredura (MEV)

Abstract

Introduction: Endodontics is a dental specialty that aims to control and treat pulp and perirradicular inflammation and infections. To this end, chemical-mechanical preparation techniques are employed, with the aid of irrigation with auxiliary chemical substances, such as EDTA and sodium hypochlorite. However, complete cleaning of root canal systems (RCS) is still a challenge. Therefore, several systems to enhance the effect of chemical solutions have been employed, such as ultrasonic passive irrigation, the Easy Clean system and Endovac. In addition, irrigating solution activation files, such as XP-Endo Finisher and XP Clean, have been introduced to improve cleaning and disinfection of root canals. Objective: To evaluate, using a scanning electron microscope (SEM), the shape and surface of two endodontic instruments used for root canal cleaning. Methodology: This study analyzed the surface of XP-Endo Finisher and XP Clean files using SEM, comparing them in terms of shape and chemical composition. Results: The results revealed that the files, despite being designed for agitating the irrigating solution, have different characteristics. XP Clean has an active tip and XP-Endo Finisher has a blunt tip with better surface polishing. Conclusion: The choice between these instruments should consider not only the shape and surface polishing, but also their cost-benefit.