48709
document
In vitro determination of the chromatic effect of a silver nanoparticles solution linked to the gantrez S-97 copolymer on tooth enamel . Silver nanoparticles ( NNPs ) , alone or in combination with the bioadhesive Gantrez S-97 , have demonstrated their efficacy against Streptococcus mutans ; however , it is not known if this combination changes the color of teeth . The aim of this work was to measure the color changes occurring after the use of a Gantrez-NNP combination on enamel tooth blocks . Two study groups were randomly formed : enamel blocks brushed with ( a ) the Gantrez-NNP combination and ( b ) conventional toothpaste , for 1 minute once daily for 4 weeks , then rinsed with distilled water and placed in thymol solution . Color changes in the enamel blocks were measured using a Minolta colorimeter CR300 . Analysis of mixed models was performed with R 2.10.1 at a 95 % confidence level , using the nonlinear mixed effects ( NLME ) package . The results showed that there were no color changes over time , only a high luminosity equal in both groups . Our study showed that the use of the Gantrez-NNP combination is safe with respect to dental esthetics in the control of S. mutans .
48710
Intervention_Pharmacological
silver nanoparticles solution
48711
Intervention_Pharmacological
gantrez S-97 copolymer
48712
Intervention_Pharmacological
Silver nanoparticles ( NNPs )
48713
Intervention_Pharmacological
Gantrez S-97
48714
Intervention_Pharmacological
Gantrez-NNP combination
48715
Intervention_Pharmacological
the Gantrez-NNP combination
48716
Intervention_Pharmacological
conventional toothpaste
48717
Intervention_Pharmacological
rinsed with distilled water and placed in thymol solution
48718
Intervention_Pharmacological
Gantrez-NNP combination
48719
Outcome_Other
chromatic effect
48720
Outcome_Other
color of teeth
48721
Outcome_Other
color changes
48722
Outcome_Other
Color changes in the enamel blocks
48723
Outcome_Other
Minolta colorimeter CR300
48724
Outcome_Other
no color changes over time
48725
Outcome_Physical
high luminosity equal
48726
Outcome_Other
safe
48727
Participant_Condition
tooth enamel .
48728
Participant_Condition
enamel blocks
48729
Participant_Condition
dental esthetics