Which lasers are most effective for preparation of enamel and dentin?

The effectiveness of lasers for the preparation of enamel and dentin is largely determined by their wavelength and absorption characteristics. In this context, the Er,Cr:YSGG laser at 2780 nm and the CO2 laser at 9300 nm are particularly suited for dental hard tissue procedures.

The Er,Cr:YSGG laser operates at a wavelength that is highly absorbed by both water and hydroxyapatite, which are key components of dental tissues. This absorption allows the laser to effectively remove or alter enamel and dentin while minimizing damage to surrounding tissues. Additionally, its ability to induce controlled thermal effects can provide precise cutting with significant water cooling, making it effective for dental preparations.

The CO2 laser, on the other hand, is also well-absorbed by water and is used primarily for soft tissue procedures but has applications in hard tissue as well due to its ability to create a precise, clean cut in dentin and enamel through rapid heating and vaporization of the water present in these tissues.

These qualities make the combination of the Er,Cr:YSGG laser and the CO2 laser the preferred choice for effective enamel and dentin preparation in a dental setting. The other options either involve wavelengths that are not optimally absorbed by the dental