Correction of Unilateral Posterior Crossbite with Functional Mandibular Shift: A Case Report

Unilateral Posterior Crossbite with functional shift of the mandible is a common condition. Early treatment of the condition may prevent adverse effects on temporomandibular joint and masticatory muscles. Many treatment options have been discussed in the literature so far. During the deciduous and early mixed dentition stages, smaller forces can be used to achieve sutural expansion. When expansion is carried out during the late deciduous dentition, the first permanent molars usually erupt into satisfactory transverse positions, without crossbite. This case paper aims to discuss the management of this condition in primary dentition in a 5 year old child using quad helix.