ALMEIDA, M. L. D.; http://lattes.cnpq.br/2076711372319191; ALMEIDA, Mirla Lays Dantas de.
Resumo:
The increased demand for aesthetic dentistry guided the development of
composite resins with better physical and mechanical properties. Therefore, it is
perceived that there is currently a wide variety of this material available. Thus, it
is necessary to carry out scientific studies on composite resins. The aim of the
present study was to evaluate in vitro the resistance of two photopolymerizable
composite resins found on the market: Filtek Z350 XT from 3M and Zirconfill
from Technw, after mechanical compression test and statistical analysis of the
results. For this, four samples of each composite resin were used, which were
submitted to the compression strength test in a universal test machine. The
results were statistically analyzed using the Mann-Whitney test with a margin of
error of 5.0%. To type the data and obtain the statistical calculations, the IBM
SPSS program in version 23 was used. It was obtained that the force average
was higher in the Zirconfill resin than in the Z350 resin; however, the median
was highest in the Z350 resin. For the fixed margin of error (5.0%) there was no
significant difference (p> 0.05) between the two resins in relation to the strength
of resistance analyzed. And, therefore, the composite resins tested show similar
values of compressive strength and do not present relevant differences.