Measurements with the LDF last 2 minutes. Three flow records of two points will be performed concomitantly with the interval of 1 minute between them. From these values, the average of the frequencies obtained will be considered to evaluate microvascularization at the determined points. There will be a total of 4 points evaluated by surgical field: two points at the base of the flap (alveolar mucosa immediately below the mucogingival junction) and two points at the border of the flap (two points at the margins of the gingiva).