CLINICAL EFFECTIVENESS OF PRE-FORMED MYOFUNCTIONAL APPLIANCES: A LITERATURE REVIEW

Pre-formed myofunctional appliances (PMAs) are increasingly utilized in early interceptive orthodontics to address malocclusion by modifying orofacial muscle function and correcting dysfunctional oral habits. Unlike custom functional appliances, PMAs are prefabricated devices designed to promote neuromuscular re-education, guide tooth eruption, and improve dentoalveolar relationships during growth. This literature review synthesizes contemporary evidence on the biological rationale, clinical effects, indications, and limitations of PMAs. Current evidence suggests that PMAsare effective in improving dentoalveolar parameters and functional habits, particularly in growing patients with mild to moderate malocclusions, while their skeletal effects remain limited and unpredictable. Appropriate case selection, treatment timing, and patient compliance are essential for achieving favorable outcomes.