Clinical Orthodontic Research
One of the great buzz phrases over the last few years is evidenced-based care. However, while this is easy to promote as a concept, we have to carry out the research that is going to provide us with the evidence that will either reinforce or make us change the care that we provide. At this point it is relevant for us to consider the type of investigation or research that is going to give the highest level of evidence, and this is always the randomized controlled trial or systematic review. All other types of study, such as case report, retrospective study, or comparison of case series, do not give us adequate information. As a result, I will confine this chapter to a description of how to carry out a randomized controlled trial.