In orthodontics, temporary anchorage devices represent a shift in the paradigm

Abstract

When it comes to controlling anchorage, orthodontists are accustomed to making use of patients' teeth as well as auxiliary appliances, both intraoral and extraoral. These methods have the limitation that it is frequently challenging to achieve results that are commensurate with the ideals we have set for ourselves. The orthodontic literature has recently seen the publication of a number of case reports that document the possibility of overcoming anchorage limitations through the use of temporary anchorage devices. These are biocompatible devices that are fixed to bone for the purpose of moving teeth, with the devices being removed after treatment has been completed. This article defines and classifies these devices, discusses their historical development, outlines some of the basic biologic parameters for their use, and articulates questions that need to be addressed with further experiments before the widespread incorporation of these technologies into everyday practise.