Laser therapy to encourage tooth repair

    A new laser-based method of treating cavities could replace fillings by encouraging the tooth's dentin to grow back naturally.
    The method could be developed around the idea that specific wavelengths of light can trigger the body's healing properties. Beaming a dose of specifically-tuned laser light at a hole drilled in a tooth will set off a chain reaction that stimulate the stem cells to turn into dentin.
    This 'low-level light therapy' could also be used to trigger stem cell in other area of the body.