scholarly journals Evaluation the Effect of Staining Agents on the Color Stability of Composite Resins that Polished at Different Interval Times (an in Vitro Study)

2016 ◽  
Vol 16 (1) ◽  
pp. 30-40
Author(s):  
Shaymaa Hassan
2020 ◽  
Vol 24 (1) ◽  
Author(s):  
Beatriz Maria Arruda ◽  
Julio Cesar Bassi ◽  
Rafael Pino Vitti ◽  
Renata Siqueira Scatolin

 Objective: The aim of this in vitro study was to evaluate the color stability of different bulk fill composite resins after extrinsic staining with coffee. Material and methods: Forty-eight disk-shaped specimens (6 mm diameter x 2 mm thick) of each composite resin were prepared for color change test. The composite resins were divided into 4 groups (n=12): one conventional composite resin (Filtek Z250) and three bulk-fill composite resins (Filtek Bulk Fill, Aura Bulk Fill, and Opus Bulk Fill). The samples were stained with 20 mL coffee solution for 7 days, with the solution being replaced every 24 h. The color change analysis was performed using a spectrophotometer, according to the CIE Lab formula. Data were analyzed using the Analysis of variance (ANOVA) and Tukey HSD tests (?=0.05). Results: The results revealed significant differences in color change among the composite resins tested (?<0.0001). The Aura Bulk Fill and Opus Bulk Fill showed the highest color change values. Conclusions: Thus, all the resins analyzed were susceptible to extrinsic staining with coffee, and the Filtek Bulk Fill showed the lowest color change value.


2019 ◽  
Vol 22 (2) ◽  
pp. 175 ◽  
Author(s):  
Narayanan Sriman ◽  
RJaya Shree Roja ◽  
V Prabhakar ◽  
Koshy Minu ◽  
Anirudhan Subha ◽  
...  

2019 ◽  
Vol 56 (3) ◽  
pp. 529-533
Author(s):  
Mihaela Pantea ◽  
Diana Andreea Ighigeanu ◽  
Alexandra Totan ◽  
Maria Greabu ◽  
Daniela Miricescu ◽  
...  

This in vitro study analyses the biochemical interaction between saliva and three types of dental composite resins (a direct resin, an indirect resin and a dual-cure resin used for cementation of indirect dental restorations). The resin samples were obtained following a specific protocol and in line with the producers� recommendations; the resin samples were incubated with saliva samples collected from 19 healthy volunteers. The obtained results showed that the tested composite resins did not produce significant changes in oxidative stress parameters that were analysed (albumin, uric acid, GGT / gamma glutamyl transferase, OXSR-1 / oxidative stress responsive kinase 1) and do not influence the inflammatory salivary status reflected by the levels of IL-6 - an inflammatory marker.


2015 ◽  
Vol 7 (4) ◽  
pp. 355-360 ◽  
Author(s):  
Raha Tafaroji ◽  
Mina Biria ◽  
Farhad Ameri ◽  
Hassan Torabzadeh ◽  
Pasha Qahari ◽  
...  

2020 ◽  
Vol 5 (2) ◽  
pp. 50-55
Author(s):  
Flávio Mendonça Copello ◽  
André Ramos Losso ◽  
Kelly Galisteu Luiz ◽  
Larine Ferreira Lira ◽  
Amanda Cunha Regal de Castro ◽  
...  

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