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- W4288052506 abstract "Abstract ObjectivesTo evaluate the effect of smoking on tooth whitening and color change after at-home bleaching.Materials and methodsThis is a cohort study evaluating two groups of participants: NS- non-smokers (n = 24) and S- smokers (n = 16). All subjects were treated with at-home bleaching using 22% carbamide peroxide (CP) in individual trays for 1 h per day, during 14 days. The color was evaluated before bleaching (D0-baseline), and one day (D1), 15 days (D15), and one month (D30) after bleaching. The color coordinates were measured using the VITA Easyshade™ spectrophotometer and the whiteness index (WI D - Whiteness Index for Dentistry) and color differences (ΔE 00 ) for S and NS at different times were calculated. Color changes between S and NS subjects for specific teeth (CI- Central Incisors, LI- Lateral Incisors, and C- Canines) were analyzed using Mann-Whitney test (α=0.05).ResultsThere was no significant difference of WI D between S and NS subjects at baseline (D0). NS participants showed higher WI D than S at D1, D15, and D30 (p < 0.05). NS showed higher ΔWI D for CI and C between D0 and the other evaluation times (D1, D15, and D30) compared to S. Smokers showed higher darkening of CI than NS in ΔWI D D30-D1 (p < 0.05). Color change (ΔE 00 ) findings had the overall behavior similar to ΔWI D . ΔWI D and ΔE 00 values for all evaluation times were within the acceptability threshold.ConclusionAlthough smoking showed some effects on the at-home bleaching treatment using 22% CP, teeth whiteness and color changes are clinically acceptable for both groups. Clinical significance: At-home bleaching is a widely performed treatment, however there is a lack of evidence using 22% carbamide peroxide gel in smokers. Although the central incisors showed significant darkening (lower WI D ) in smokers at 30 days after bleaching, the whitening index was considered clinically acceptable." @default.
- W4288052506 created "2022-07-28" @default.
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- W4288052506 date "2022-07-27" @default.
- W4288052506 modified "2023-09-28" @default.
- W4288052506 title "Influence of smoking on the effectiveness of at-home bleaching with 22% carbamide peroxide: A cohort study" @default.
- W4288052506 doi "https://doi.org/10.21203/rs.3.rs-1899296/v1" @default.
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