“…Initially, the laser is applied around the crypt opening (Fig. 7), weakening the affected re-gion, and, then, with lower energy density, the laser is applied over the whole surface in between the crypts, leading, by superficial coagulation, to an effect of tissue contraction similar to that observed in resurfacing treatments, [25][26][27][28] as shown in Figure 8. In relation to the center of the crypts, the resulting forces are directed outwards and are responsible for the widening of its opening ostium, making them shallower due to the elasticity of the tissues, as illustrated in Figure 9.…”