The conceptions of P. PLANAS, especially his "neuro-occlusal rehabilitation", illustrate the influence of the masticatory work on the dento-alveolar, as well on the maxillaries growth, by adapting the morphological structures to the functional context. The current and frequent lack of physiological efficient unilateral alternate mastication results in "atrophies" of maxillary development showing restricted dimensions.
PLANAS introduced selective occlusal grinding of the deciduous teeth to encourage and balance the lateral excursions of the mandible, and also removable appliances, like "splints" or "running track plates", which increase the activity of the masticatory muscles and then induce functional stimulations for the growth of the maxillaries. These interceptive treatments are usefull already in young children at the age of 5 or 6.