“…Further studies, more homogeneous, with greater sample and an integral vision and not only aesthetics are needed, which assess the interarch relationship and maxillary growth (Uzel and Alparslan, 2011; Van der Heijden et al, 2013) with the use of passive orthopedics associated with nasal stents. In this context, the present design of IO can be considered promising, since the technique is easy to perform, reproducible, enables proprioceptive stimuli (passive design, velar extension, and mark for tongue position) from the stomatognathic system (suction, breathing, swallowing, and phonation) (Guedes et al, 2015) and coupling contemporary nasal stents (Matsuo and Hirose, 1991; Grayson et al, 1991; Bennum et al, 1999; Maull et al, 1999; Liou et al, 2004; Pai et al, 2005; Ezzat et al, 2007; Yang et al, 2011; Grayson and Cutting, 2011; Rau et al, 2015). Desai (1983) observed that, in the first weeks of life, the baby has a very strong sucking reflex, which becomes a masticatory stimulus after 8 to 10 weeks.…”