Maxillary incisor crossbites should be corrected as soon as possible to prevent the development of functional shifts and asymmetrical mandibular growth. Early correction avoids the establishment of abnormal occlusal relationships that can lead to dental and skeletal malformations. Delaying treatment may result in permanent mandibular displacement, causing facial asymmetry and more complex orthodontic issues. Early intervention promotes normal maxillary development and helps achieve ideal occlusion with minimal treatment complexity.

Reference: Contemporary Orthodontics, 6th Edition.