Release date: 2014-06-03
According to foreign media reports, a team led by Harvard University recently succeeded in using weak lasers to activate stem cells in the laboratory and stimulate tooth growth in mice and human dental tissues. The study is still in its infancy and has not been tested on humans, so it is not currently possible to determine whether these future technologies will enter the hospital. However, the possible treatment options from these trials are very exciting.
Stem cells are spread all over the body, and scientists are fascinated by their ability to become cells of any type. Their ability means that they have the potential to repair or replace damaged tissue. Scientists have suggested in the past that it is possible to stimulate stem cell growth with lasers because lasers can stimulate tissue growth for some unknown reason. But this is the first time scientists have demonstrated and observed this process.
The ability to naturally regenerate tooth tissue can alter dental medicine, making it possible for doctors to regenerate teeth for patients instead of using porcelain teeth to replace them. Even more amazing is that once the technology is tested further, it is possible to treat wounds and regenerate bones, skin and muscles.
The researchers first drilled holes in the two molars of the mouse to reveal the internal tissues of the teeth. One of the teeth received laser treatment and the other did not receive laser treatment. After 12 weeks, the researchers observed that the dentin in the treated caries had grown again and the teeth were recovering. The same results occurred when the researchers tested again on mice.
The researchers then tested the same technique on various mammalian cells. Each time the laser causes some oxygenated molecules to appear. Those molecules then cause the stem cells to begin to transform into cells that produce dentin. Using these experiments, the researchers first learned how lasers can promote tissue regeneration.
The researchers conducted three experiments to see if the laser would stimulate the process of tissue regeneration in the stem cells in the tissue. Human cell experiments have shown that the effects of lasers on mice are equally applicable to human teeth. Researchers say they are currently developing human trials of the technology. If those trials are successful, it may lead to regenerative laser therapy for testing bones, muscles and other cells.
Source: Tencent Technology
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