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    STUDIA CHEMIA - Ediţia nr.4 din 2019  
         
  Articol:   EFFECT OF AN EXPERIMENTAL GREEN TEA EXTRACT BLEACHING GEL ON THE COLOR CHANGES OF A COMPOSITE RESIN .

Autori:  CORINA VOINA, ADRIANA MURESAN, ADA DELEAN, AMALIA IONELA MOLDOVAN, LAURA SILAGHI DUMITRESCU, ANDRADA VOINA TONEA, MADALINA VALEANU.
 
       
         
  Rezumat:  
DOI: 10.24193/subbchem.2019.4.07

Published Online: 2019-12-20
Published Print: 2019-12-30
pp. 93-105
VIEW PDF: PDF

The effect of the color change of stained and then bleached composite resins blocks have been evaluated. 28 blocks, made from Admira fusion composite resin and divided in 3 groups, were included in the present study. They were stained in coffee for 3 days and then bleached with Opalescence gel (GO) and experimental bleaching gel based on green tea extract (GE). All color indices were measured in all situations (initially, after staining and after bleaching) with Vita Easy Shade spectrophotometer. It was used the CIE*L*a*b system for the color change parameters. The group bleached with Opalescence presented the most significant color changes. The bleaching effect of the experimental gel is lower that Opalescence bleaching gel.

Keywords:green tea, composite blocks, staining, bleaching, color change
 
         
     
         
         
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