期刊
PLASMA PROCESSES AND POLYMERS
卷 6, 期 8, 页码 479-483出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ppap.200800133
关键词
cold plasma; dental disinfection; plasma jet; pulsed discharges; sterilization
资金
- Air Force Office of Scientific Research
- Los Angeles Basin Clinical and Translational Science Institute Pilot and Feasibility Grant
A novel coaxial tubular device capable of generating a 2.5 cm long pencil-like plasma plume in ambient atmosphere has recently been developed to disinfect root canal systems during endodontic treatment. Powered with short (approximate to 100 ns), intense (6 kV) electric pulses at 1 kHz, the plasma dental probe is safe for operation, electromagnetic noise-free, with low power consumption (an average power of approximate to 1 W) and minimal heating of materials under treatment. It thus has the essential features required for oral and dental disinfection. In this communication, we present the design of the device and evidence that the plasma dental probe is effective for tooth surface disinfection. Scanning electron microscopy shows complete destruction of endodontic biofilms for a depth of 1 mm inside a root canal after plasma treatment for 5 min. Plasma emission spectroscopy identifies atomic oxygen as one of the likely active agents for the bactericidal effect.
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