Effect of rapid maxillary expansion on the morphology of spheno-occipital synchondrosis in rats

ConclusionsEarly SOS widening could be identified in the lowest part before median palatal suture opening. Similarly, narrowing of the SOS at its top was observed before the most significant median palatal suture expansion. Thus it can be hypothesized that changes within the SOS complex result from the transmission of the orthopaedic forces rather than from a  displacement of the maxillary halves.
Source: Journal of Orofacial Orthopedics/Fortschritte der Kieferorthopadie - Category: ENT & OMF Source Type: research