Nanosecond Pulsed Plasma Dental Probe

被引：68

作者：

Jiang, Chunqi ^{[1
]}

Chen, Meng-Tse ^{[2
]}

Gorur, Amita ^{[3
]}

Schaudinn, Christoph ^{[3
]}

Jaramillo, David E. ^{[4
]}

Costerton, J. William ^{[3
]}

Sedghizadeh, Parish P. ^{[3
]}

Vernier, P. Thomas ^{[1
]}

Gundersen, Martin A. ^{[1
]}

机构：

[1] Univ So Calif, Viterbi Sch Engn, Ming Hsieh Dept Elect Engn Electrophys, Los Angeles, CA 90089 USA

[2] Univ So Calif, Viterbi Sch Engn, Mork Family Dept Mat Sci & Chem Engn, Los Angeles, CA 90089 USA

[3] Univ So Calif, Sch Dent, Ctr Biofilms, Los Angeles, CA 90089 USA

[4] Loma Linda Univ, Sch Dent, Loma Linda, CA 92354 USA

来源：

PLASMA PROCESSES AND POLYMERS | 2009年 / 6卷 / 08期

关键词：

cold plasma; dental disinfection; plasma jet; pulsed discharges; sterilization; CURRENT GLOW-DISCHARGES; ATMOSPHERIC-PRESSURE; SURFACE-TREATMENT; BACTERIA; NEEDLE; STERILIZATION; INACTIVATION;

D O I：

10.1002/ppap.200800133

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

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.

引用

页码：479 / 483

页数：5

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