Efficiency in bracket bonding with the use of pretreatment methods to tooth enamel before acid etching: sodium hypochlorite vs. hydrogen peroxide techniques.

Bond failures are produced by the existence of biofilm on the tooth surface. Because biofilm is impermeable, it prevents contact in many areas, reducing the etching effect which selectively dissolves calcified tissues but does not seem to eliminate biofilm from the tooth surface, and thus the bond between the tooth and the bracket is not strong enough. The aim of this study is to compare bracket bonding efficiency with two dental surface pretreatments: sodium hypochlorite vs. hydrogen peroxide techniques. This was a cross-sectional, comparative, in vitro study. Seventy-five premolars extracted for orthodontic purposes were evaluated. They were divided into three groups of 25 teeth and assigned randomly toone of the pretreatment techniques (5.25%sodium hypochlorite or 3.5% hydrogen peroxide) or to a control group. The most efficient pretreatment technique for bonding to brackets was sodium hypochlorite, with an average of 17.15 (kg/F). Significant differences were observed between groups (p=0.0001). The post hoc bond strength test showed statistically significant differences between the sodium hypochlorite technique and the control group (p=0.0001). The sodium hypochlorite technique improves bracket adhesion to tooth enamel.

Efficiency in bracket bonding with the use of pretreatment methods to tooth enamel before acid etching: sodium hypochlorite vs. hydrogen peroxide techniques

Bond failures are produced by the existence of biofilm on the tooth surface. Because biofilm is impermeable, it prevents contact in many areas, reducing the etching effect which selectively dissolves calcified tissues but does not seem to eliminate biofilm from the tooth surface, and thus the bond between the tooth and the bracket is not strong enough. The aim of this study is to compare bracket bonding efficiency with two dental surface pretreatments: sodium hypochlorite vs. hydrogen peroxide techniques. This was a cross-sectional, comparative, in vitro study. Seventy-five premolars extracted for orthodontic purposes were evaluated. They were divided into three groups of 25 teeth and assigned randomly toone of the pretreatment techniques (5.25%sodium hypochlorite or 3.5% hydrogen peroxide) or to a control group. The most efficient pretreatment technique for bonding to brackets was sodium hypochlorite, with an average of 17.15 (kg/F). Significant differences were observed between groups (p=0.0001). The post hoc bond strength test showed statistically significant differences between the sodium hypochlorite technique and the control group (p=0.0001). The sodium hypochlorite technique improves bracket adhesion to tooth enamel.

Las fallas de adhesion se producen por la existencia de la biopelicula en la superficie del organo dental, ya que es impermeable y no permite el contacto en muchas areas, de manera que disminuye el efecto del grabado acido; el cual tiene la capacidad de disolver selectivamente los tejidos calcificados, pero no parece eliminar la biopelicula en la superficie dental, por lo tanto, no se lleva a cabo la suficiente fuerza de adhesion en la interfase diente-bracket. El objetivo es comparar la eficiencia en la adhesion de los brackets con el empleo de dos metodos de pre-tratamientos de la superficie del esmalte, el hipoclorito de sodio vs. peroxido de hidrogeno. Estudio comparativo, transversal, in vitro. Se evaluaron 75 premolares extraidos con fines ortodoncicos, tres grupos de 25 dientes, asignados aleatoriamente con alguna de las dos tecnicas de pre-tratamiento al esmalte, hipoclorito de sodio al 5.25%, peroxido de hidrogeno al 3.5% y un grupo control. La tecnica de pre-tratamiento al esmalte mas eficiente para la fuerza de adhesion a los brackets fue el hipoclorito de sodio, con una media de 17.15 (Kg/F), se observaron diferencias significativas inter-grupos (p= 0.001). Las pruebas post hoc para las fuerzas de adhesion mostraron diferencia estadistica - mente significativa para la tecnica de hipoclorito de sodio/ grupo control (p=.001). La utilizacion de hipoclorito de sodio ayuda a mejorar la adhesion de los brackets en la superficie del esmalte.