As for endodontics, also the periodontal aspect can be addressed with different wavelengths, even in this case, however, the wavelength of the wave of choice, because of its greater penetration and then decontamination is the Nd: YAG laser, but with different clinical outcomes, and different procedures, it can also be used especially Diode with photodynamic therapy Erbium Laser: Yag is perhaps the least suitable for the procedure