In:
Journal of Esthetic and Restorative Dentistry, Wiley, Vol. 35, No. 6 ( 2023-09), p. 869-877
Abstract:
To evaluate the effect of smoking on tooth whitening and color change after at‐home bleaching. Materials and Methods This prospective clinical study evaluated 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) for 1 h/day for 14 days. Color coordinates ( L *—luminosity, a *—red‐green axis and b *—yellow‐blue axis) were obtained before bleaching (D0—baseline), 1 day (D1), 15 days (D15), and 1 month (D30) after bleaching. The whiteness index (WI D ) and CIEDE2000 color differences (Δ E 00 ) were calculated for S and NS. Color changes between S and NS subjects for specific teeth (CI—Central Incisors, LI—Lateral Incisors, and C—Canines) were analyzed using the Mann–Whitney test ( α = 0.05). Results There was no significant difference in WI D between S and NS subjects at baseline. 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 changes showed similar overall behavior for ΔWI D . For all evaluation times, ΔWI D and Δ E 00 values were below the corresponding acceptability thresholds. Conclusion At‐home bleaching was effective on smokers and nonsmokers. Smoking negatively affected color stability after bleaching. Δ E 00 and ΔWI D were acceptable for both groups. Clinical Significance Although smoking negatively affected color stability after bleaching, the observed changes were clinically acceptable.
Type of Medium:
Online Resource
ISSN:
1496-4155
,
1708-8240
Language:
English
Publisher:
Wiley
Publication Date:
2023
detail.hit.zdb_id:
2110391-4
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