Effect of a Self-adhering Material in Dental Hypersensitivity

Inclusion Criteria: * Generally good health despite the seriousness of their illness; * A clinical reduction of salivary flow; * The presence of two or three teeth which were hypersensitive to stimulation with a blast of air. In addition, patients were considered suitable for the study if they had sensitive teeth showing abrasion, erosion or recession with the exposure of the cervical dentine. Exclusion Criteria: * teeth with subjective or objective evidence of carious lesions, pulpitis, restorations, premature contact, cracked enamel, active periapical infection or that had received periodontal surgery or root-planning up to 6 months prior to the investigation; * patients who had received professional desensitizing therapy during the previous 3 months; * patients who had used desensitizing toothpaste in the last 6 weeks. Patients were also excluded if they were under significant medication that could have interfered with pain perception (e.g., antidepressants, anti-inflammatory drugs, sedatives, and muscle relaxants).