Abstract
With the advancement of three-dimensional (3D) printing technology, orthodontists are able to design and manufacture customised lingual appliances, which may increase treatment versatility and reduce treatment costs. The present article describes the digital workflows associated with the design and manufacture of customised double-slotted lingual brackets and arch wires. Also demonstrated is the technique’s efficiency through a non-extraction case report. An adult patient with moderate crowding in both arches was successfully treated using 3D-printed customised double-slotted lingual appliances combined with miniscrews and interproximal reduction. The moderate crowding was addressed without incisor proclination despite the non-extraction strategy.