Incognito lingual brackets and wires are made by the 3M company in Germany. These appliances were initially designed by Dr. Dirk Wiechmann. He published his results in 2003 in American Journal of Orthodontics and Dentofacial Orthopedics
, where he reported testing these appliances for 18 months on 600 bonded arches on patients in his private practice.
The company uses a CAD/CAM technology to combine bracket fabrication and bracket positioning which is done on computer models. The wires and brackets are customized to each patient’s anatomy of the lingual tooth surface. The bases of these brackets are bigger than other brackets produced by different companies, however, these appliances have thinner bracket base and use less bonding material than other brackets. This may be seen as an advantage by some due to the low profile of brackets which may cause less irritation to the tongue of patients, but this does lead to creating 1st order bends in the wires to compensate for the low profile of these brackets. A study done in Germany in 2005, compared the pre-adjusted lingual brackets (Ormco) to customized lingual brackets (Incognito) on a group of 40 Germany speaking women. The results stated that customized brackets in the study induced significantly fewer cases of tongue space restriction, pressure sores, reddening or lesions to the tongue in the long term than the pre-fabricated brackets. Even though the results favor the Incognito appliance, it should be kept in mind that this is a subjective opinion of people which may confound the results.