Effect of 1.5% Potassium Oxalate on the Control of Tooth Sensitivity and Color Change After Home Bleaching

Effect of 1.5% Potassium Oxalate on the Control of Tooth Sensitivity and Color Change After Home Bleaching: a Randomized, Placebo-controlled Clinical Study

This double-blind randomized clinical trial evaluated the effect of 1.5% potassium oxalate on pain sensitivity control and color change after home tooth whitening. It also evaluated the influence of potassium oxalate on health-related quality of life (HRQOL) and on the degree of patient satisfaction after bleaching treatment.

Inclusion Criteria:

• individuals aged 18 to 29 years of both sexes with chroma greater than A2 in the upper incisors and canines, in the Vita Classical color scale;
• absence of active caries lesions
• patients who had never undergone bleaching therapy;
• good oral hygiene and no hypersensitivity to tactile and evaporative stimuli through the Visual Analog Pain Scale;

Exclusion Criteria:

• patients undergoing fixed orthodontic treatment;
• patients with darkened non-vital teeth and/or with extensive restorations in molars;
• presence of cracks or fractures;
• patients allergic to the product, with the presence of gastroesophageal disorders and with dentinal exposure in anterior and/or posterior teeth.