%0 Journal Article
%T Influence of the contamination of blood mixed with saliva on adhesive shear resistance and the indice of adhesive remaining the two new composites
%A Matheus Melo Pithon
%A M¨¢rlio Vin¨ªcius de Oliveira
%A Eduardo Franzotti Sant¡¯anna
%A M£¿nica Tirre Ara¨²jo
%J Revista Sa¨²de.Com
%D 2007
%I Universidade Estadual do Sudoeste da Bahia
%X The objective of this study was to evaluate shear resistance and the ¨ªndice of adhesive remaining (IAR) the composite Eagle bond and Orthobond after contamination of enamel by blood mixed with saliva. Sixty bovine permanent lower incisors were divided into four groups (n = 15). In Group 1 and Group 3 the bonding procedures were performed by using Eagle Bond and Orthobond composites, respectively, according to the manufacturer¡¯s recommendations. In Group 2 and Group 4 the bonding procedures were performed by using Eagle Bond and Orthobond composites, respectively, according to the manufacturer¡¯s recommendations, before the bonding in which the conditioned enamel was contaminated by blood mixed with saliva, followed by washing with a jet of air and water, drying, and gluing of the accessory. After bonding the brackets, all the samples were submitted to shear bond strength tests by means of an Emic universal testing machine at a crosshead speed of 0.5 mm/min. The results (MPa) showed no statistically significant differences between the groups (P > 0.05). A greater number of fractures in the bracket/composite interface were evidenced by the ARI (Adhesive Remnant Index) scores the groups 3 and 4.
%K shear strength
%K dental bonding
%K orthodontic brackets
%U http://www.uesb.br/revista/rsc/v3/v3n1a05.pdf