Inclusion Criteria:  Two to four hypersensitive teeth with a response ≥ 04 on the visual analogue scale (VAS) from 0 to 10, where 0 represents no pain and 10 extreme pain, during the application of tactile (explorer probe) and evaporative (jet air); Dentinal exposure on the posterior teeth, due to the presence of a shallow non-carious lesion up to 02 mm in depth, according to the Smith & Knight index (measured with a millimeter probe), and / or class I gingival recession according to Miller classification.  Exclusion Criteria:  Restorations; tooth decay and/or periodontal pockets; dental pulpitis; enamel cracks or fractures on sensitive teeth; Continuous treatment with anti-inflammatory drugs and/or analgesics or desensitizing treatment induced three months prior to research recruitment data; Pregnancy or lactation; Systemic diseases; Fixed orthodontic appliances; Occlusal instability.