International Journal of Engineering Technology and Scientific Innovation

Teeth whitening plays an important role in the acceptance of patients for cosmetic dental treatments. When tooth whitening is unfavorable, adhesive resins are used, however, these are diminished by residual oxygen, which is eliminated with antioxidant substances after bleaching. The purpose is to assess the effectiveness of teeth whitening after placement of 10% sodium ascorbate. Materials and methods: It was an experimental, in vitro and comparative study of two groups of 11 premolar samples each; with longitudinal measurement of the effectiveness of hydrogen peroxide (38%) after the application of sodium ascorbate (10%), subjecting it to a color check using the Vita®Easy Shade spectrophotometer based on the Vitapan Classical® colorimeter measurement scale. The statistical program IBM SPSS STATICS 23 was used. Results: It was observed that the use of 38% hydrogen peroxide bleaching after the application of an antioxidant such as 10% sodium ascorbate does not present statistically significant changes, which indicates that indeed the use of an antioxidant after bleaching It does not affect its effectiveness. Conclusion: 10% sodium ascorbate does not affect the effectiveness of 38% hydrogen peroxide bleaching in any of the time periods evaluated in the present study.