Management of anterior cross bite on siblings using direct anterior tracks in deciduous dentition: long-term follow-up of two case reports

Class III malocclusion correction remains a challenge to our profession at different levels. Although there is no consensus on the timing and treatment protocol, a general recommendation is to intervene early to achieve as much skeletal change as possible and eliminate environmental factors that later exacerbate the manifestation of the malocclusion. This case report presents two siblings with an anterior crossbite and a familial Class III trait. Anterior resin direct tracks were applied as an early intervention during the deciduous dentition phase, and the patients were monitored for 31 months and 23 months, respectively. Both patients show positive overjet and overbite over time, and the permanent incisors have erupted, maintaining the positive overjet relationship in Sibling 1. The objective of this report was to evaluate the outcomes of Direct Anterior Tracks as an early interceptive treatment for functional anterior crossbite in the deciduous dentition. This paper is unique in monitoring the effect of Direct Anterior Tracks until the eruption of the permanent incisors. The intervention was effective in reducing malocclusion complexity in two siblings with a family history of Class III malocclusion.