Self ligation brackets: know the unknown

Self-ligating brackets have been gaining popularity over the past several decades. Although the self-ligating edgewise bracket was introduced to orthodontists 75 years ago, recent advances in bracket technology have resulted in a number of new selfligating bracket ‘‘systems’’ and greater interest in their use. Much of this interest is in response to information comparing the benefits of self-ligating systems with conventional edgewise brackets. Often, this information comes from marketing materials and non refereed sources claiming that self-ligating bracket systems provide superior treatment efficiency and efficacy. Various advantages for these systems have been claimed. The current situation regarding self-ligating brackets is reviewed. Recent developments, clinical advantages, and remaining imperfections are described. The evidence regarding treatment efficiency is reviewed. Self-ligating brackets have reached a stage of design and production control, where the advantages are significantly greater than the remaining imperfections.