The clefts of the lip and / or palate are the most common congenital anomaly of face (1:700 births). Are also known by the name “harelip” . It is important to note that these patients can be successfully treated, their intellectual development is normal and they become full members of society. With gaps were born actors Stacy kitsch and Joaquin Phoenix, politician Gunther Verheugen. The orthodontic treatment depends on the crack and subsequent deformities. Some distortion has occurred in utero and are due to improper functioning of muscles seized on a split upper jaw, while others occur later, mainly due to surgical trauma and premature extraction of teeth, all against a background of a possible hereditary predisposition to one or another form of dental and jaw deformities. These mechanisms may more or less be compensated by proper orthodontic treatment. Some treatment centers apply orthodontic treatment before the first operation in early childhood, others prefer to start in a temporary or mixed dentition. It was found that preoperative treatment with plates does not give better orthodontic results compared to no preoperative treatment, and facilitates feeding of the child. However, some of the centers in Europe and the world apply early orthodontic treatment in order to facilitate the surgical operation.
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