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Laser light can help regrow teeth by triggering stem cells

By: April Carson

New research proves that lasers can assist in growing back broken tooth fragments. This technology could make visits to the dental office a thing of the past, as fillings, crowns, and other procedures would no longer be necessary.

The process works by using lasers to stimulate stem cells in the teeth, which then help in the regrowth of tooth fragments. Lasers can be used to trigger the production of collagen and other necessary proteins, which help in the repair process. This technology is a major breakthrough, as it could revolutionize how dental care is administered and increase access to quality care.

Research has suggested in the past that lasers can help with heart, skin, lung, and nerve tissue regeneration. This is due to the fact that low levels of laser light stimulate chemical reactions associated with wound healing properties, reducing inflammation, and pain treatment. As an example, red light specifically has been shown to promote hair growth.

Harvard scientists performed a study on dentin, which is the primary make-up of human teeth. Dentin is harder than bone but not as hard at the enamel that coats teeth. When somebody gets a cavity or their tooth becomes damaged, dentists use fillings, crowns or veneers made out of synthetic materials like ceramic. However, these scientists wanted to see if they could get dental stem cells to regenerate dentin instead.

They used a laser to expose stem cells taken from the root of a tooth to certain wavelengths of light. The results showed that the laser could activate the stem cells and trigger dentin regrowth. They found that after exposing the dental stem cells to red and near-infrared lasers, they generated more dentin compared to those not exposed.

The researchers sought to find out whether they could use lasers to activate proteins known as growth factors in the body that would then manipulate dental stem cells, rather than implanting modified dental stem cells or injecting chemicals. This technique could prove to be less invasive, quicker and more cost effective in the long run. With further research, this technique may even pave the way for regrowing other types of tissue using laser light.

The research team believes that laser light creates chemicals called reactive oxygen species, which then activate a growth factor known as transforming growth factor beta-1 (TGF-b1) in the body. This molecule can stimulate dental stem cells to repair teeth. TGF-b1 is part of a family of growth factors that exist in other tissues like skin and bone, so it's possible lasers could be used for regeneration here too. This is exciting news for those who suffer from tooth decay and lost teeth, as well as people with other conditions that require tissue regeneration. Although the research is still in early stages at this point, it suggests the potential of laser light to regrow teeth in a safe and non-invasive way.

The researchers performed damage experiments on rats' molars by drilling and removing pieces of dentin. Then, they applied lasers to the tiny exposed teeth and soft pulp beneath them before capping the molars temporarily. By using high-resolution x-ray imaging and microscopy, they were able to confirm growth in dentin formation 12 weeks later.

This discovery could have a wide-reaching impact on dental health, as it may offer a novel solution for people with. Laser light has the potential to revolutionize tissue regeneration by aiding in regrowth of lost teeth and other tissues, allowing for faster healing times and potentially lower medical costs.

In addition to studying rats, the scientists also experimented with adult dental stem cells from human teeth. After exposing these cells to low levels of laser light, they found that it activated TGF-b1 and led to the generation of dentin-forming cells. The team is now hoping to take their work one step further by conducting clinical trials on humans.

If the results are successful, laser light could provide a safe and efficient way to regrow teeth in clinical settings. Laser light may also be beneficial in other medical applications such as wound healing, arthritis relief, soft tissue regeneration and more. The possibilities for this technology are seemingly endless, making it an exciting discovery that has potential to revolutionize healthcare.

The findings were publihed in Stem Cell Research & Therapy, providing further evidence that light therapy could be a potential option for regenerative medicine treatments.

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About the Blogger:

April Carson is the daughter of Billy Carson. She received her bachelor's degree in Social Sciences from Jacksonville University, where she was also on the Women's Basketball team. She now has a successful clothing company that specializes in organic baby clothes and other items. Take a look at their most popular fall fashions on

To read more of April's blogs, check out her website! She publishes new blogs on a daily basis, including the most helpful mommy advice and baby care tips! Follow on IG @bossbabymav



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