Pierre-Robin syndrome is an embriopathy characterised by microgenia (tiny jaw/mandible), microglossia (small tongue), glossoptosis (lowered, depresed tongue) and consequent problems with swallowing, chewing. 30% of people with PR syndrome has a cleft palate. The origin of this pathology is something like that: during 8th week of fetal development head normally bent forward should straighten, but it doesn't. The mandible is pressed against the chest of a baby that position makes it impossible for the tongue lower so that the palatal bones aligned properly and knit forming a palatal suture. Treatment involves orthognatic surgeries, orthodontic treatment with modified twin-block braces prepared for the construction bite.
