In 2021, it was discovered that the oldest evidence of dental cavities dates back 54 million years. It was found on the fossilized teeth of Microsyops latidens, a small primate that lived during the ...
In Equation 6, the factor l is responsible for accounting for the losses that occur due to absorption and scattering of photons inside the cavity. Just as the linewidth of the laser is constrained by ...
Abstract: A re-entrant cylindrical cavity has been adapted to measure the dielectric constant and power factor of small disk samples of insulating materials. The methods of measurement, mechanical ...
"Incorporation [of fluoride] into the tooth enamel makes it more resistant to the acids produced by bacteria, helping prevent tooth decay in the first place," Morris said. "The presence of fluoride ...