%0 Journal Article
%T <sup>99m</sup>Tc in the evaluation of microleakage of composite resin restorations with SonicFill<sup>TM</sup>. An <i>in vitro</i> experimental model
%A Carrilho Eunice
%A Abrantes Margarida
%A Casalta-Lopes Jo£¿o
%A Botelho Filomena
%A Paula Anabela
%A Ambr¨®sio Pedro
%A Marto Carlos Miguel
%A Rebelo Diana
%A Marques Joana
%A Polido M¨¢rio
%A Ferreira Manuel Marques
%J Open Journal of Stomatology
%P 340-347
%@ 2160-8717
%D 2012
%I Scientific Research Publishing
%R 10.4236/ojst.2012.24058
%X Introduction: The composite SonicFillTM (Kerr/Kavo) is indicated for posterior restorations, with a single increment up to 5 mm due to reduced polymerization shrinkage, thus reducing working time. Aim: Evaluation of marginal microleakage with SonicFillTM. Method and Materials: There were sectioned sixty noncarious human molars in the occluso-cervical direction. Class V cavities were prepared on each tooth with gingival margin walls in a standardized way. The specimens were divided into 4 groups: group 1¡ªrestored with SonicFill<sup>TM</sup> (Kerr/Kavo), group 2¡ªrestored with Filtek<sup>TM</sup> SupremeXTE (3M ESPE), group 3¡ªthe cavities were not restored; group 4¡ªrestored with SonicFill<sup>TM</sup> (Kerr/Kavo). In groups 1, 2 and 4 the enamel was conditioned with 37% orthophosphoric acid and applied the self-etch adhesive system Clear- fill<sup>TM</sup> SE BOND (Kuraray). The specimens were stored in distilled water at 37?C for 7 days. After, the specimens, were immersed in a solution of 99mTc-Pertechnetate and the radioactivity was assessed with a gamma camera. The nonparametric Kruskal-Wallis and Mann-Whitney test with Bonferroni correction at a significance level of 5% were used for the statistical analyses. Results: There are significant differences between the positive and negative control groups and between these and experimental groups (p &lt; 0.05). There are no statistically significant differences between the specimens restored with SonicFill<sup>TM</sup> and Filtek<sup>TM</sup> SupremeXTE. Conclusion: The new composite SonicFill<sup>TM</sup> and Filtek<sup>TM</sup> SupremeXTE showed no difference concerning dye penetration. The Sonic- Fill<sup>TM</sup> restorative system showed no influence in concerning microleakage.
%K Posterior resin Composites
%K Composite Restorations
%K Polymerization Stress
%K Polymerization Shrinkage
%K Microleakage
%K Thermocycling
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=25553