Bleaching efficacy of at home 16% carbamide peroxide. A long‐term clinical follow‐up study. Issue 1 (6th January 2020)

• Record Type: Journal Article
• Authors: Llena, Carmen; Villanueva, Alvaro; Mejias, Elena; Forner, Leopoldo
• Is Part Of: Journal of esthetic and restorative dentistry. Volume 32:Issue 1(2020)
• Page Start: 12
• Page End: 18
• Publication Date: 2020-01-06
• Subjects: home tooth whitening -- carbamide peroxidase -- clinical follow‐up -- effectiveness -- color stability; Prosthodontics -- Periodicals; 617.6
• DOI: 10.1111/jerd.12560
• Languages: English
• ISSNs: 1496-4155

Abstract

Abstract: Objective: To assess the whitening efficacy of a 16% carbamide peroxidase (CP) gel after 42 months of clinical follow‐up. Materials and methods: A retrospective clinical study was carried out involving 95 participants. CP 16% was applied for 90 minutes a day for 4 weeks using individualized trays. Tooth color was assessed using spectrophotometry at baseline, 1 week after the end of treatment, and every 6 months until completing 42 months of follow‐up. Color parameters were compared using analysis of variance for repeated measures. The analysis by teeth groups was performed using two‐way ANOVA. Results: The mean baseline L * was 81.7 ± 5.2 versus 83.6 ± 8.8 after 42 months ( P <.01). L * showed a decrease of 2.3 after 30 months. The values corresponding to a * before treatment were 0.4 ± 1.1 versus −1.0 ± 1.0 after 42 months ( P <.01). The initial values corresponding to b * were 23.4 ± 3.3 versus 15.8 ± 1.3 after 42 months ( P <.01). Values of Δ E 00 and Δ E, at the end of the treatment were 4.6 ± 1.2 and 7.8 ± 1.8, respectively. Teeth groups remained stable after 42 months of follow‐up. Conclusions: The home application of 16% CP gel for 90 minutes a day for 4 weeks using individualized trays resulted in whitening that remained stable over the 42 months of follow‐up. Clinical significance: Treatment with 16% CP is an effective and safe tooth whitening procedure, and the color obtained remains stable over the long term.