ArticleClinical oral investigations2025
Effects of slow maxillary expansion on perioral muscle pressure and parafunctions in children: a prospective study.
Article in Clinical oral investigations, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
aimTo investigate the effect of Slow Maxillary Expansion (SME) on Maximum Tongue, Lip, and left and right Cheek Pressure (MTP, MLP, MCP), with the aim to identify possible correlations with dental characteristics and parafunctions. MATERIALS AND
methodsPatients with mixed dentition presenting crossbite, lack of space in the upper jaw and/or a mandibular shift were included. Digital casts were analysed and perioral muscle pressure was assessed using the Iowa Oral Performance Instrument before (T
results136 children were included. SME significantly increased arch length, intermolar and intercanine distance and reduced upper anterior crowding. Sagittal molar relationship and overbite improved. MTP and MCP increased significantly at T
conclusionSME with removable appliances in mixed dentition leads to significant short-term improvement of dentoalveolar characteristics, increasing MTP and MCP and reducing the presence of parafunctions such as nail/pen biting and mouth breathing. No substantial correlation was observed between muscle pressure changes and dental changes, suggesting the latter to be primarily attributed to the appliance itself. CLINICAL RELEVANCE: SME in mixed dentition leads to myofunctional adaptation and has a positive effect on parafunctions.
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