The objective of this study is to evaluate the incidence of gingival fissures according to the type of brush used, soft and medium.

Gingival recession constitute a functional and aesthetic problem that affects much of the population. One of the possible causes refers to a traumatic brushing. Individuals who have an excessive tooth brushing can cause injuries to your gums, such as abrasions and fissures. These lesions have been considered subrogated outcomes of gingival recession noninfectious. The literature only reports and case series showing the gingival fissures, which were once associated with traumatic occlusion.

This is the first clinical trial to evaluate the gingival fissures according to the type of brush used.

Inclusion Criteria:

• good/ excellent health;
• idade de 14 a 20 anos;
• at least 20 teeth without a history of destructive periodontal disease, absence of gingival bleeding;
• absence of loss of attachment/recession ≥2mm in molars and pre-molars in the buccal areas.

Exclusion Criteria:

• were unable to provide consent or comply with the sudy protocol;
• smokers;
• pregnant women;
• persons under orthodontic treatment or with dental or implant prosthesis, presence of cervical abrasions, restorations or caries;
• need of antibiotic prophylaxis associated with dental procedures.