The objective is to compare the dento-alveolar therapeutic effects of wearing class II inter-arch traction elastics on aligners versus multi-brackets in an adult population. The principal hypothesis is no significant difference in therapeutic effects of using inter-arch elastics on aligners versus multi-brackets.
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Change in IMPA Mandibular incisor angle (degrees)
Timeframe: First : just before the beginning of treatment; Second : just after the end of orthodontic treatment. An average of 18 months.