Comparative Clinical Study of Two Tooth Whitening Protocols.

Abstract

This study aimed to clinically evaluate the efficacy of two different home whitening protocols and to determine which is more effective: applying the whitening gel every 24 hours or every 48 hours for 2 weeks. The differences in terms of tooth sensitivity are also analyzed. A sample of 60 patients was divided into three groups of 20 (N=20). Group A: 16% carbamide peroxide applied every 24h for 2 weeks. Group B: 16% carbamide peroxide applied every 48h for 2 weeks. Group C (control group): a placebo gel without peroxide (glycerin gel) was applied every 24h for 2 weeks. To compare the groups, color measurements were made using a spectrophotometer and Student's t-test for independent samples was used. The confidence level was set at 95% (p ≤ 0.05) and no statistically significant differences between applying 16% carbamide peroxide every 24h or every 48h for 2 weeks (p> 0.05) were found. The study concluded that carbamide peroxide 16% is equally effective applied with both protocols, obtaining the same results, but the application of every other day protocol produces less sensitivity than the daily application protocol.