Cold plasma therapy of a tooth root canal infected with Enterococcus faecalis biofilms in vitro

Jie Pan, Ke Sun, Yongdong Liang, Peng Sun, Xiaohui Yang, Jing Wang, Jue Zhang, Weidong Zhu, Jing Fang, Kurt H Becker

Peacock Scholarship

Cold plasma therapy of a tooth root canal infected with Enterococcus faecalis biofilms in vitro Public Deposited

Introduction Complete sterilization of an infected root canal is an important challenge in endodontic treatment. Traditional methods often cannot achieve high-efficiency sterilization because of the complexity of the root canal system. The objective of the study was to investigate in vitro the feasibility of using a cold plasma treatment of a root canal infected with Enterococcus faecalis biofilms. Methods Seventy single-root teeth infected with E. faecalis biofilms were divided into 7 groups. Group 1 served as the negative control group (no treatment), and group 7 was the positive control group with teeth treated with calcium hydroxide intracanal medication for 7 days. Groups 2 to 6 included teeth treated by cold plasma for 2, 4, 6, 8, and 10 minutes, respectively. The disinfection of the E. faecalis biofilm was evaluated by colony-forming unit (CFU) counting. Scanning electron microscopy was used to evaluate the structural …

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