Mahmoud K Al-Omiri1, Ra'ed S Abul Hassan2, Bader K AlZarea3, Edward Lynch4. 1. Faculty of Dentistry, University of Jordan, Amman, Jordan; The City of London School of Dentistry, BPP University, UK. Electronic address: alomirim@yahoo.co.uk. 2. Faculty of Allied Medical Sciences, The Royal University for Medical Sciences, Amman, Jordan. 3. Faculty of Dentistry, AlJouf University, Sakaka, Saudi Arabia. 4. Warwick Medical School, Coventry CV4 7AL, UK.
Abstract
OBJECTIVES: To evaluate the efficacy of tooth bleaching using ozone after hydrogen peroxide (H2O2) in comparison to the use of H2O2 alone. METHODS: 70 extracted teeth were randomly distributed into two groups. Teeth surfaces in group 1 (n=35) were treated using 38% H2O2 and then were exposed to ozone for 60s and this ozonated peroxide mixture was left on the teeth for 20 min. Meanwhile, teeth in group 2 (n=35) were treated with H2O2 38% for 20 min. The L* a* b* and Vita Classic shade values of teeth were evaluated in both groups at base line, after application of H2O2 and ozone in group 1, and after application of H2O2 and then again after another application of ozone in group 2. The statistically significant changes were set at P ≤ 0.05. RESULTS: Baseline L* a* b* and Vita shade values were comparable between groups (P>0.05). Teeth obtained lighter shades following bleaching with both H2O2 and ozone or with H2O2 alone (P ≤ 0.05). Further bleaching with ozone for teeth already bleached with H2O2 alone showed further improvement of the shades of teeth (P<0.001). Teeth treated with H2O2 and ozone had more shade improvements than those only treated with H2O2 (P<0.001). Also, L* values were increased while b* values were decreased (teeth obtained lighter shades) following bleaching in both groups (P ≤ 0.05). More changes were obtained when both ozone and H2O2 were used (P ≤ 0.05). CONCLUSIONS: Bleaching with 38% H2O2 and ozone resulted in teeth with lighter shades than bleaching with 38% H2O2 alone.
OBJECTIVES: To evaluate the efficacy of tooth bleaching using ozone after hydrogen peroxide (H2O2) in comparison to the use of H2O2 alone. METHODS: 70 extracted teeth were randomly distributed into two groups. Teeth surfaces in group 1 (n=35) were treated using 38% H2O2 and then were exposed to ozone for 60s and this ozonated peroxide mixture was left on the teeth for 20 min. Meanwhile, teeth in group 2 (n=35) were treated with H2O2 38% for 20 min. The L* a* b* and Vita Classic shade values of teeth were evaluated in both groups at base line, after application of H2O2 and ozone in group 1, and after application of H2O2 and then again after another application of ozone in group 2. The statistically significant changes were set at P ≤ 0.05. RESULTS: Baseline L* a* b* and Vita shade values were comparable between groups (P>0.05). Teeth obtained lighter shades following bleaching with both H2O2 and ozone or with H2O2 alone (P ≤ 0.05). Further bleaching with ozone for teeth already bleached with H2O2 alone showed further improvement of the shades of teeth (P<0.001). Teeth treated with H2O2 and ozone had more shade improvements than those only treated with H2O2 (P<0.001). Also, L* values were increased while b* values were decreased (teeth obtained lighter shades) following bleaching in both groups (P ≤ 0.05). More changes were obtained when both ozone and H2O2 were used (P ≤ 0.05). CONCLUSIONS: Bleaching with 38% H2O2 and ozone resulted in teeth with lighter shades than bleaching with 38% H2O2 alone.
Authors: Thalyta Dos Reis Furlani Zouain Ferreira Neves Dias; Francisco Ubiratan Ferreira de Campos; Cecilia Pedroso Turssi; Flávia Lucisano Botelho do Amaral; Fabiana Mantovani Gomes França; Roberta Tarkany Basting Journal: Med Gas Res Date: 2022 Jul-Sep
Authors: Mahmoud K Al-Omiri; Nasser M Alqahtani; Nasser M Alahmari; Raed Abul Hassan; Abdullah A Al Nazeh; Edward Lynch Journal: Sci Rep Date: 2021-05-27 Impact factor: 4.379