This technology pertains to a laser technology that allows teeth that have decay or cavities to regenerate themselves, based on the application of light that rapidly accelerates the growth of new tooth material where the light is applied. The operation would start by first removing a small amount of the tooth from the outside of the cavity, to ensure that no caries exists within the regenerated tooth material, and then the laser would be applied that would regenerate the tooth material. After it is regenerated, the new tooth material can be coated with an enamel that would protect it from decay in the future, and if it’s too large for the cavity area, it can be reshaped using lasers to remove excess materials from the area.