Colorimetric assessment of laser and home bleaching techniques.
J Esthet Dent
; 11(2): 87-94, 1999.
Article
in En
| MEDLINE
| ID: mdl-10530271
ABSTRACT
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 ANDMETHODS:
Forty extracted human central incisors were exposed to argon laser-activated 35% H2O2, 10% carbamide peroxide, or 20% carbamide peroxide. A fourth group (control) did not receive any bleach treatment (n = 10/group). Commission International de l'Eclariage (CIE) L*a*b* coordinates were recorded prior to bleaching (baseline), at 1 week, and at 2 weeks. The color difference (delta E*ab) between baseline and subsequent measurements 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). CLINICALSIGNIFICANCE:
Exposure to 20% carbamide peroxide produced the greatest perceivable change in color. The recommended one-time application of laser-activated hydrogen peroxide did not demonstrate any perceivable color change. The clinician should be aware that additional or longer applications may be required.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Tooth Bleaching
Limits:
Humans
Language:
En
Journal:
J Esthet Dent
Journal subject:
ODONTOLOGIA
Year:
1999
Document type:
Article
Affiliation country: