In 1972, Andrews provided us with a first orientation
regarding torq and angulations in orthodontic practice. By
angulation (tip), Andrews therefore understands the
mesio-distal coronal inclination which is given by the angle
formed by the long axis of the tooth seen from the vestibular
side and a line perpendicular to the occlusal plane; the
angulation of each tooth can be found by measuring the
anterior (mesial) angle between the long axis and the
occlusal plane from which 90◦ is subtracted. If the resulting
value is positive, it means that we have a distal root
inclination and the gingival portion of the crown is located
distal to the occlusal portion (tip forward). If the resulting
value is negative, it means that we have a mesial root
inclination and the gingival portion of the crown is located
mesial to the occlusal portion (tip back). The present study
aims to evaluate the effects of molar distalization in both
arches in a group of 83 patients, highlighting the advantages
of the method in correcting molar angulations and restoring
occlusal functionality. Molar distalization was used in this
study as a non-extraction therapy to regain space lost due
to deciduous tooth decay and early loss of temporary teeth,
but also for the correction of class II molar relationship,
using a variety of intra- and extraoral devices.