“…The open bite may lead to adjustments in tongue positioning, inserting it, protracting it or raising it (28) , as well as the overbite, which reduces the intraoral space due to the decrease of the vertical dimension, which may hinder the necessary movements of the tongue in speech production (24) . Central nervous system abnormalities constitute the most serious complications of IP (2,3) . In our study, none of the patients had abnormal neurological development.…”