Wilson 3D lingual arch during incisors’ advancing orthodontic movement

AIM: To quantify and evaluate the orthodontic movements of incisors and molars during treatment of lower crowding by means of Wilson 3D lingual arch. MATERIALS AND METHODS: Were considered 70 patients (43 female and 27 male) mean age 12,1 years, during permanent dentition, with Ist class molar relationship and average crowding of lower incisors of 3,6 mm. The orthodontic treatment has been performed without extractions and patient collaboration. The device consisted of a 3 D lingual arch 0.18 thru-crome wire and 2 double vertical connections to solidarize and control tridimensionally lower molar bands by lingual tube, inserted passively to incisors’ cingulum. RESULTS: It has been showed an average advancement of incisors of 2.38 mm with an unexpected increase of lower molars distalization of 1.32 in 27 cases and with moderate extrusion. CONCLUSION: This type of lingual arch is very well tollerated by patients; it is not visible, besides it is very easy to activate it. It is very efficaciuos to treat lower incisors crowding without need of patient collaboration.