Regarding Dental Lasers; we will discuss a lot of important and interesting issues like LASER abbreviation, difference between Light & Laser, Absorption Coefficient Diagram. Starting from Chromophores and its classifications, Laser Safety & different wavelengths that used in dentistry. We will discuss how to classify the laser from many points of view to understand the features of each type and my own Classification MOHSEN’S Classification. Also we highlight different fibre diameters and MPHD effect which discuss the effect of laser on the tissues.
