Influence of filler charge on gloss of composite materials before and after in vitro toothbrushing

Autor: Ivo Krejci, Enrico Di Bella, Dorien Lefever, Fernanda Ferreira Jassé, Edson Alves de Campos, Stefano Ardu, Jean Pierre Salomon
Rok vydání: 2012
Předmět:
Zdroj: Journal of Dentistry, Vol. 41 (2013) pp. e41-e44
ISSN: 1879-176X
0300-5712
Popis: Objectives This study evaluated the gloss behaviour of experimental resin composites loaded with different filler percentages, immediately after polishing and after toothbrushing simulation. Methods Sixteen disc-shaped specimens were fabricated for each different-charged composite (40%, 50%, 60%, 70% and 75%) and polished with SiC abrasive papers. Gloss measurements were made prior to simulated toothbrushing. The specimens were subjected to the simulation for 5, 15, 30 and 60 min using an electrical toothbrush with a standardized pressure while being immersed in a toothpaste/artificial saliva slurry. Results Baseline composite gloss values ranged from 69.7 (40%) to 81.3 (75%) GU (gloss units) and from 18.1 (40%) to 32.3 (75%) GU after 1 h of brushing. Highest gloss values were obtained by 75%-charged resin, while the lowest values were obtained by the 40%-charged one. Conclusions All tested materials showed a gloss decrease. However, the higher filler load a composite resin has, the higher gloss it can achieve. Clinical significance Gloss of resin composite materials is an important factor in determining aesthetic success of anterior restorations, and this property may vary according to the filler charge of the restorative material. Higher filler load of a composite resin results in higher gloss values.
Databáze: OpenAIRE
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