Many studies on in-vitro orthodontic bond strength fail to report test conditions that could significantly affect their outcomes
INTRODUCTION The aims of this study were to systematic ally review the available literature regarding in-vitro orthodontic shear bond strength testing and to analyze the influence of test conditions on bond strength .
A new one-step dental flowable composite for orthodontic use: an in vitro bond strength study.
A new flowable composite , Denfil Flow , has shown an acceptable shear bond strength for bonding orthodontic brackets , when used with an intermediate , unfilled , low-viscosity resin . According to the manufacturer , it also shows a good viscosity for use with no preliminary adhesive . This could reduce the total time of bonding procedure while maintaining clinical ly useful bond strength . The aim of the current research was to assess this property . Eighty extracted human premolars were r and omly divided into four equal groups . Stainless steel brackets were bonded to etched enamel using ( 1 ) Denfil Flow , ( 2 ) a traditional flowable composite ( Dyract Flow ) , ( 3 ) Denfil Flow composite resin and an intermediate liquid resin , and ( 4 ) Transbond XT adhesive . Debonding was performed with a shearing force . The residual adhesive on the enamel surface was evaluated using the adhesive remnant index . The bond strength of Denfil Flow ( 34.8 MPa ) showed no significant difference with the other control groups and was clinical ly acceptable . Denfil Flow and Dyract Flow tended to display cohesive failure within the adhesive . Denfil Flow can be used without liquid resin to reduce the bonding procedure time while maintaining acceptable bond strength . Further studies are required to evaluate the enamel surface of the teeth after the same polishing procedure in the four groups
Many studies on in-vitro orthodontic bond strength fail to report test conditions that could significantly affect their outcomes
INTRODUCTION The aims of this study were to systematic ally review the available literature regarding in-vitro orthodontic shear bond strength testing and to analyze the influence of test conditions on bond strength .