[Some considerations on the failures in malocclusion treatment].

In the interpretation of the author failures in the treatment of malocclusion include lack of achieving of the planned change of the primary occlusion shape despite good prognosis. The failures may be divided into: persistence of the initial morphological and functional conditions throughout the whole time of treatment, return on the initial occlusion shape after some time despite obtaining of apparent success of treatment. The appearance during the treatment of additional pathological factors, the manifestation of new pathological features in juvenile life period despite reshaping of occlusion in childhood according to treatment plan, increased mobility of teeth, hypertrophy, atrophy or decubitus ulcers of the oral mucosa and development of necrotic foci in the periosteum and pulp necrosis.