Comparison of Skeletal Effects of Herbst and Invisalign MA in Growing Patients With KLass Malocclusion

Precise description of study methodology.

For each group, a sample of +- 15 patients with class 2 malocclusion aged between 9 and 15 years will be collected for this prospective study who presented for an initial orthodontic consultation between October 2022 and july 20262 at ULB's Erasme Hospital. Each patient will be treated with Invisalign MA or the Herbst appliance by residents of the orthodontic program directed by P. Maria Orellana

Inclusion criteria included a Class II skeletal malocclusion with an ANB greater than 4°; (In the case of a Class 2 Division 2 malocclusion, the retroclined upper incisors will be proclined to obtain an overjet allowing mandibular advancement. If the patient has a transverse deficit, palatal expansion will be performed before treatment with aligners and during treatment in herbst cases.) Class II molar and canine relationship and CVM2/CVM3 cervical vertebral maturation.

Informed consent forms in the patient's native language will be submitted before the start of each treatment.

Only a profile cephalometry will be taken in the patients considered for this study at the time of the initial consultation.