Keywords
impacted tooth
anodontia
How to Cite
Abstract
The 2x4 appliance consists of using four brackets to the anterior teeth (upper or lower), accompanied by two tubes on the molars, which can be fixed directly or inserted into orthodontic bands. This technique allows efficient correction of malocclusions during mixed dentition, such as aligning poorly positioned permanent teeth, correcting anterior crossbite, controlling tooth inclination and rotation, and reducing overbite. When carried out with adequate theoretical and practical knowledge, the method is effective and agile, but can lead to complications if poorly executed. An essential precaution is to monitor the position of the roots of the upper permanent lateral incisors to avoid contact with the crown of the erupting upper permanent canine, preventing root resorption. This case report describes the diagnosis and treatment of an 11-year-old female patient with impaction of the upper permanent central incisor (11), a common anomaly in the mixed dentition. Initially, a ulectomy was performed and the impacted tooth was pulled with nickel-titanium wires and a bonding button. The 2x4 method was used to align and level the anterior teeth, favoring the repositioning of the impacted element in the arch. The treatment was successfully completed, restoring aesthetics and function, and demonstrating the effectiveness of the 2x4 method as a conservative and efficient approach to correcting anterior crossbite and traction of impacted incisors.
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