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Colorimetric Assessment of Laser and Home Bleaching Techniques
Author(s) -
JONES AARON H.,
DIAZARNOLD ANA M.,
VARGAS MARCOS A.,
COBB DEBORAH S.
Publication year - 1999
Publication title -
journal of esthetic and restorative dentistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.919
H-Index - 60
eISSN - 1708-8240
pISSN - 1496-4155
DOI - 10.1111/j.1708-8240.1999.tb00382.x
Subject(s) - carbamide peroxide , hydrogen peroxide , bleach , color difference , significant difference , peroxide , chemistry , laser , colorimetry , dentistry , medicine , optics , chromatography , biochemistry , physics , organic chemistry , filter (signal processing) , computer science , computer vision
Purpose: This study recorded in vitro color change of three tooth bleaching techniques that included laser‐activated hydrogen peroxide and two concentrations of carbamide peroxide. Materials and Methods: Forty extracted human central incisors were exposed to argon laser‐activated 35% H 2 O 2 , 10% carbamide peroxide, or 20% carbamide peroxide. A fourth group (control) did not receive any bleach treatment (n = 10/group). Commission International de ľEclariage (CIE) L*a*b* coordinates were recorded prior to bleaching (baseline), at 1 week, and at 2 weeks. The color difference (ΔE*ab) between baseline and subsequent measurents was calculated. Results: The control group did not demonstrate significant color difference over time ( p > .05). The laser group was not statistically different from the control group ( p > .01). The color difference of the 10% and 20% carbamide peroxide groups was statistically different from the control group ( p < .01).