Plasma torch - for tooth decay!


20/01/2010

Plasmatrons able to kill the bacteria that cause tooth decay, can be an effective and less painful alternative conventional dental drill, according to a new study published in the February issue of the "Journal of Medical Microbiology" (Journal of Medical Microbiology).

It was found that when the direction of the plasma beam on the dentin (dental hard tissue beneath the enamel) tooth of bacteria decreases ten thousand times. This discovery means that the affected tissue of the tooth cavity can be used plasma technology, this is usually drilled to a tooth.

Scientists from the Institute Leypnitskogo (Leibniz-Institute of Surface Modifications), and dentists from the University Saarlandskogo (Saarland University), tested the effectiveness of plasma against common oral pathogens including Streptococcus mutans and Lactobacillus casei. The bacteria form a film on the tooth surface and can corrode tooth enamel and dentin, resulting in the appearance of tooth decay. If left untreated, it can lead to pain, tooth loss and sometimes serious infections gums. During the study, the researchers infected dentin of human molars with four species of bacteria and subjected them to a plasma for 6, 12 and 18 seconds. The longer the dentin was exposed to the plasma, the less the remained viable bacteria.

On the plasma spoken of as the fourth state of matter after solid, liquid and gaseous. Number of technical and medical applications of plasmas is growing. In the plasma space can be found everywhere, it is formed when the high-energy processes ionize atoms of one or more electrons. So turn out high-temperature reactive oxygen species that are capable of destroying microbes. Even today, the hot plasma is used to disinfect surgical instruments.

Dr. Stefan Rupf (Stefan Rupf) of Saarlandskogo University, who participated in the study, said that the recent development of cold plasma temperature of about 40 degrees Celsius gave high hopes for dentistry. "The low temperature means that the plasma can kill the microbes while preserving the tooth. Pulp in the center of the tooth, which is under the dentin, is linked with a network of blood and nerves, so it is not in any way be subjected to high temperatures."

Dr. Rupf said that the appearance of plasma technology to disinfect tooth cavities would be happy to both patients and doctors. "Boring - not a very pleasant process, and sometimes painful. Cold plasma, in contrast, is non-invasive method and it is very effective. Currently in the field of plasma medicine has been tremendous progress, and after 3-5 years of clinical treatment of dental cavities plasma will become a reality. " Interesting science and technology news only on pages of our portal.

Original: Physorg.com


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