In the present study, only mandibular arch was analysed because both mandibular and maxillary arch forms are closely associated with each other, and also in order to achieve stable orthodontic treatment results it is essential to maintain mandibular intercanine width and mandibular incisor labiolingual position.
Selection of plane of the tooth for grinding: the median plane of the tooth was selected for grinding because grinding in the labiolingual plane may result in loss of some cementum layers leading to false age determination.
Anterior crossbite is defined as an abnormal reversed relationship of a tooth or teeth to the opposing teeth in the buccolingual or labiolingual direction, and it is also known as reverse articulation [1].