In this paper we describe the lingual orthodontic laboratory and indirect bonding technique developed by P.C. Curiel, and we explain what it consists of from impression-taking to bracket rebonding. We analyse how the scan-model is carried out, as well as the set-up, different types of bows and brackets, bonding and rebonding. This is a technique that allows the use of horizontal slot brackets, vertical slot brackets, and double slot or self-ligating brackets; such technique is very versatile and adaptable to the treatment philosophy behind many orthodontists. After the technological advancement achieved by D. Fillion (Eurapix) and D. Wiechmann (Incognito), this technique goes one step beyond, offering new options on lingual orthodontic treatment. We compare the technique with some of the most trusted and used ones such as the Hiro, Eurapix and Incognito systems, and with other less complex ones such as the 2D systems, the Jigs systems and the direct bonding technique. We discuss the advantages and disadvantages of self-ligating lingual orthodontics. In short, we explain what the Harmony lingual orthodontics system consists of.
(Rev Esp Ortod. 2011;41(3):152-158)