The objective of a preprosthetic orthodontic treatment is to position the teeth in such a way that a treatment with (fixed) dental prostheses is made possible or simplified or to affect the result of this treatment positively. Conceivable preprosthetic orthodontic treatments are: correcting primary orthodontic anomalies, closing or reducing interdental spaces and correcting the migration of teeth. In the case of unfavourable maxillomandibular relations, a preprosthetic surgical treatment is usually needed together with a preprosthetic orthodontic treatment. For children with agenesis and/or early loss of teeth and/or aberrant morphology of teeth, a treatment with fixed dental prostheses, either implant-supported or not, may be indicated after the tooth development or in some cases earlier. Until that time, preprosthetic orthodontic treatments may be indicated to offer an aesthetically sound provisional solution and to achieve optimal teeth positions for the final fixed dental prostheses.

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