The European journal of prosthodontics and restorative dentistry 2013-12-01

Colour stability of temporary restorations with different thicknesses submitted to artificial accelerated aging.

F D J Silame, R Tonani, C C Alandia-Roman, M Chinelatti, H Panzeri, F C P Pires-de-Souza

文献索引：Eur. J. Prosthodont. Restor. Dent. 21(4) , 187-90, (2013)

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摘要

This study evaluated the colour stability of temporary prosthetic restorations with different thicknesses submitted to artificial accelerated aging. The occlusal surfaces of 40 molars were grinded to obtain flat enamel surfaces. Twenty acrylic resin specimens [Polymethyl methacrylate (Duralay) and Bis-methyl acrylate (Luxatemp)] were made with two different thicknesses, 0.5 mm and 1.0 mm. Temporary restorations were fixed on enamel and CIE L*a*b* colour parameters of each specimen were assessed before and after artificial accelerated aging. All groups showed colour alterations above the clinically acceptable limit. Luxatemp showed the lowest colour alteration regardless its thickness and Duralay showed the greatest alteration with 0.5 mm.

相关化合物

  • 双酚A丙三醇双甲基...
  • 聚(甲基丙烯酸甲酯)

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