Shortly after the invention of the first ruby laser in 1960, researchers began investigating lasers potential use in dentistry. Dental lasers are now well-established in the dental armamentarium and their future potential is even greater. Recent developments in technology and differing wavelengths are creating a host of innovative treatments using various dental lasers. The modern practitioner needs to be familiarized with these devices and understand the possibilities and limitations of each device. This course is designed to help educate clinicians and to clear the confusion regarding the various wavelengths available. Every discipline of dentistry can benefit from the use of these modern devices. There are currently five predominant types of lasers available for dental professionals: diode, Nd:YAG, Er:YAG, Er,Cr:YSGG, and CO2. Practitioners who want to integrate laser technology into their patient care face the daunting task of trying to sort through all the information available to make the right decision. Each device and wavelength available offer specific capabilities and limitations. A proper understanding of dental lasers’ potential is not possible without a basic understanding of laser physics and biological interactions.