Inborn defects also include cleft palate and lip. They occur relatively often. In Czech Republic 1 out of 520 born children will suffer from certain type of cleft disorder. They are due to internal and external causes and their combinations. The exact cause of these defects is still unknown. They are probably due to increased susceptibility (genetical predisposition} to various factors resposible for the cleft defects. Nowadays, with high specialties in medical field, plastic surgeon cannot alone succesfully treat defect, which affects so many organs and functions. It is needed to have a coorporation with specialists from other medical fields such as pediatrician, phoniatric specialist, speech therapist, stomatologist, ortodentist, genetic counseler and psychologist. Plastic surgeon carries out series of operations to close the defect, corrects deformities in surrounding tissue and can in coorporation with odontonist help to correct jaw deformities in adulthood. THIS GROUP OF PATIENTS needs more frequent check-ups and more vigorous care from stomatologists than healthy population- at least once in two months. Than the state of each tooth, their erruption and condition of the soft tissue is examined. Number of children with this condition is not small. Due to communication betwen nasal and oral cavity,..