The value of dental exams is quite accepted but repetitive exposure to dental x-rays has been getting a bad rap in terms of risks. New technologies such as DIAGNOdent have revolutionized the diagnosis phase of the treatment with the use of a laser and sensor to check for the density of the tooth enamel. Using light eliminates the radiation exposure and it is also faster with the display readout showing immediate results. The density of the enamel is quite predictable and based on a fixed set of parameters, The system uses the laser to check if the density of the enamel has degraded or can still be corrected with some filling thus making treatment faster and less painful.