Self-correction of posterior crossbite in childhood: a systematic review of long-term follow-up studies.

Background: The concept that posterior crossbite is not self-correcting has been controversial in the literature.

Objective: To evaluate the incidence of self-correction of crossbite in different stages of dentition in childhood.

Search Methods And Selection Criteria: A bibliographic search using the acronym PECOS was performed in five databases and in partial grey literature.