WHAT DOES CR:YAG CRYSTAL MEAN?

On root cementum, regarding thermal influence all through irradiation, previous scientific tests showed only a little charred appearance was made by Er:YAG laser without the need of h2o coolant [31], whereas obvious carbonization was noticed with Er,Cr:YSGG laser devoid of drinking water coolant [32]. Accordingly, the Er:YAG laser makes a lot less