The complex case--unforeseeable findings and interdisciplinary treatment.

Orthodontic treatment is described in a case requiring an early treatment start due to disturbed eruption in the upper front, with displacement of an upper central incisor, tongue dysfunction and Class III tendency. The further course revealed additional problems which had been unforeseeable at treatment onset: ankylosis of the lower left first molar and dehiscences in the lower front. Treatment duration was very long due to treatment measures overlapping. The interdisciplinary treatment measures are outlined and the difficulties posed by contractual guidelines are pointed out.