Wasiewicz Anna, Migliorati Marco, Stradi Roberto, Zeidman Alon

Title: Non-extraction treatment of Class II malocclusions using Incognito appliance in adult patients

AIMS: The purpose of the study was to present and describe protocols for non-extraction treatment of Class II malocclusions using the Incognito system - the completely customized lingual appliances - in adult patients.

METHODS: 12 adult patients, 7 females and 5 males, aged between 25 and 35 years of age, diagnosed with Class II malocclusions were enrolled in the study. All patients were treated with upper and lower Incognito - completely customized lingual appliances (CCLAs). The treatment protocols included methods with and without patients' cooperation (7 and 5 patients respectively). The compliance method involved converting the Class II molar and canine relationship into a Class I relation by the use of intermaxillary elastics whereas the non-compliance consisted of treatment with Class II bite correctors or by moving the maxillary molars distally using skeletal anchorage (TADs).

RESULTS: The results of the study revealed that among protocols for non-extraction treatment of Class II malocclusions using Incognito system the most effective in treating adult patients were the non-compliance methods. The non-compliance protocols were more successful in achieving Class I molar and canine relationship and the treatment time was shorter comparing to the use of CCLAs with intermaxillary elastics.

CONCLUSIONS: Completely customized lingual appliances, such as the Incognito system, allow using either an aesthetic and functional treatment in adult patients. The clinical observations show that the Incognito appliance can be used together with the compliance and non-compliance methods, but is more efficient with the latter ones.