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Plasma Technology

Disinfection and Sterilization Using Plasma Technology

Recent studies have shown that plasma can efficiently inactivate microbial pathogens such as bacteria, fungi, and viruses in addition to degrading toxins. Moreover, this technology is effective at inactivating pathogens on the surface of medical and dental devices, as well as agricultural products. The current practical applications of plasma technology range from sterilizing therapeutic medical devices to improving crop yields, as well as the area of food preservation. A review introducing recent advances and future perspectives in plasma technology, especially in applications related to disinfection and sterilization is givent @ ref1 below. It also introduces the latest studies, mainly focusing on the pote n tial app l i cations of plasma technology for the inactivation of microorganisms and the degradation of toxins.

What is Plasma ?

There are three commonly encountered states of matter: solid, liquid, and gas. When a solid is heated, it transforms into a liquid and then from a liquid into a gas. If enough energy is applied to gas, it becomes an ionized gas known as plasma, which represents the fourth fundamental state of matter [8]. The plasma contains reactive chemical species such as electrons, ions, neutral molecules, and atoms, as well as charged species [9]. In addition, the emission of radiation occurs in the ultraviolet (UV) as well as visible and near-infrared regions during plasma generation.

Future Perspectives in Medicine and Dentistry

Sterilization of medical instruments contaminated with pathogens is crucial in preventing secondary infections. Currently, medical instruments are sterilized by autoclaving, gamma-ray treatment, UV exposure, and the use of gases such as ethylene oxide, hydrogen peroxide, formaldehyde, peracetic acid. Each sterilization method has both advantages and disadvantages.

The potential of plasma technology in medical and dental applications is extremely broad. Along with disinfection / sterilization of medical and dental devices, the technology could be used to treat beds, desks, and floors . Plasma technology may also have therapeutic potential. Therapeutic uses include the treatment of skin diseases, blood coagulation as well as dental treatment and applications in dermatology such as chronic wound healing. Recently, the potential application of plasma technology as a novel anticancer therapy has been assessed. Induction of cancer cell death by both direct and indirect exposure of plasma has been reported.

(Ref 1 : https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6834201/)

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