In:
Revista da Faculdade de Odontologia - UPF, UPF Editora, Vol. 24, No. 1 ( 2019-05-07), p. 52-57
Abstract:
The present study compared the effectiveness of brushing and over-the-counter tooth-whitening strips on stain removal. Forty bovine teeth were used. Initial color readings were taken, and half of the samples were stained with grape juice for 7 days. The others teeth were used as the control. Both stained and control teeth were randomly separated into 2 groups (n=10) according to the treatment they underwent: whitening strips 2 times/day for 30 minutes for 7 days and mechanical brushing for 1 year using toothpaste. After treatments, new color readings were taken and results of color stability (ΔE) and changes in coordinates (ΔL, Δa, Δb) were statistically analyzed (2-way ANOVA, Bonferroni p 〈 .05). Statistical differences were found in ΔE, and all coordinates (p 〈 .05) between control and stained groups, with major changes in the stained group for both treatments. The control group showed greater alteration in Δb, being higher (p 〈 .05) for bleached teeth, decreasing in yellowness. For stained teeth, Δa showed the greatest change, decreasing in redness, being higher (p 〈 .05) for bleached teeth. Both treatments were effective for removing stains, and tooth whitening proved to be a more efficient method for removing stains from teeth that had not been subjected to the previous staining.
Type of Medium:
Online Resource
ISSN:
2318-843X
,
1413-4012
DOI:
10.5335/rfo.v24i1.8798
Language:
Unknown
Publisher:
UPF Editora
Publication Date:
2019
detail.hit.zdb_id:
2660519-3
