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Enamel remineralization effect of a dentifrice containing calcium sodium phosphosilicate: an optical coherence tomography observation.
Acta Odontol Scand. 2017 Jan 16:1-10. doi: 10.1080/00016357.2016.1277588. [Epub ahead of print]
purpose of this study was to examine the effects of a dentifrice
containing 5% calcium sodium phosphosilicate (CSP) on the
remineralization of the enamel using optical coherence tomography (OCT).
MATERIALS AND METHODS:
incisors were sliced and shaped in a rectangular form. One group of
five specimens was treated with undersaturated 0.1 M lactic acid buffer
solution (pH 4.75) for 10 min and then placed in artificial saliva (pH
7.0) (De group). Other specimens were stored in solutions of toothpaste
containing CSP for 10 min, followed by 10-min immersion in the lactic
acid buffer solution twice a day before storage in artificial saliva
(CSP group). An additional group was stored in only artificial saliva
(control group). OCT imaging on the selected location of the enamel
surface was performed. The peak intensity and width at 1/e2
were recorded in each of the six areas on the sample and averaged, and
the sample size of each group was six. The integrated value in units
(dB × μm) was calculated in the area of peak intensity. The data for
each group was subjected to one-way repeated-measures ANOVA and Tukey
HSD tests (α = 0.05).
changes in integrated values of each group were different. A slight but
significant increase in the integrated value was observed in the
control group, whereas a slight but significant decrease in the value
was observed the De group. Integrated values increased in the CSP group.
Remineralization occurred upon immersion in the toothpaste containing CSP.