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Oper Dent. 2006 Nov-Dec;31(6):643-51.

Extended bleaching of tetracycline-stained teeth: a 5-year study.

Author information

1
Department of Restorative Dentistry, Indiana University School of Dentistry, Indianapolis, IN, USA.

Abstract

Bleaching tetracycline-stained teeth is the most challenging form of tooth lightening. This article reports on 44 subjects who bleached their tetracycline-stained teeth for 6 months using trays with reservoirs overnight in a half-mouth designed study and 2 of 3 different concentrations of carbamide peroxide (10%, 15% or 20%). The subjects were followed for 5 years. The area evaluated was the middle third of the teeth. More than 55% of tooth lightening occurred within 1 month; after 5 years, more than 65% of the maximum tooth whitening remained for all 3 gel concentrations. Tooth whitening can be accomplished with any of the 3 concentrations used.

PMID:
17153971
DOI:
10.2341/06-6
[Indexed for MEDLINE]

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