Introduction: Oral diseases affect people throughout their lives, mainly causing pain, discomfort, disfigurement and sometimes death. The electric toothbrush is an easy-to-use and favorable alternative for patients with gingivitis. Methods: Fifteen male and female subjects with gingivitis were instructed to use powered toothbrushes. Three scales were evaluated for the degree of gingivitis and dental plaque. Initial and final evaluations were compared. Collected data were analyzed and were compared using Student's t-test. Results: Simplified Oral Hygiene Index (IHOS), in the first evaluation a mean of 3.56, median of 3.6 and variance of .798 was obtained, in the second evaluation a mean of .46, median of .40, variance of .05, p.000 was observed. Löe and Silness Gingival Index (GIF), in the first evaluation a mean of 2.3, median of 2.2 and variance of .288 was obtained. In the second evaluation, a mean of .03, median of .00, variance of .002, p.000 was observed. O'Leary index (O´L), in the first evaluation, an average of 97.27% was obtained, median of 98%. In the second evaluation, a mean of 29.67%, median of 30%, p.000 was observed. Conclusion: In this study we found that there is a statistically significant difference in the reduction of dental plaque and gingivitis when using powered toothbrushes. Keywords:Gingivitis, powered toothbrushes, brushing technique, oral hygiene, periodontal disease.