Spectrophotometric assessment of the effects of 10 percent carbamide peroxide on enamel translucency
Braz. oral res
;
22(1): 90-95, Jan.-Mar. 2008. graf, tab
Article
in English
| LILACS
| ID: lil-480590
ABSTRACT
Tooth shade results from the interaction between enamel color, enamel translucency and dentine color. A change in any of these parameters will change a tooths color. The objective of this study was to evaluate the changes occurring in enamel translucency during a tooth whitening process. Fourteen human tooth enamel fragments, with a mean thickness of 0.96 mm (± 0.3 mm), were subjected to a bleaching agent (10 percent carbamide peroxide) 8 hours per day for 28 days. The enamel fragment translucency was measured by a computer controlled spectrophotometer before and after the bleaching agent applications in accordance with ANSI Z80.3-1986 - American National Standard for Ophthalmics - nonprescription sunglasses and fashion eyewear-requirements. The measurements were statistically compared by the Mann-Whitney non-parametric test. A decrease was observed in the translucency of all specimens and, consequently, there was a decrease in transmittance values for all samples. It was observed that the bleaching procedure significantly changes the enamel translucency, making it more opaque.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Peroxides
/
Tooth Bleaching
/
Urea
/
In Vitro Techniques
/
Oxidants
/
Dental Enamel
Limits:
Humans
Language:
English
Journal:
Braz. oral res
Journal subject:
Dentistry
Year:
2008
Type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
São Paulo Dental Association/BR
/
University of São Paulo/BR
Similar
MEDLINE
...
LILACS
LIS